key: cord-0005195-4etox2w9 authors: nan title: List of references date: 1982 journal: Hydrobiologia DOI: 10.1007/bf00050801 sha: 07e49e1035fa0fff851107d86a48f83b542c3ef5 doc_id: 5195 cord_uid: 4etox2w9 nan Britain. 23:511-514. 184 BISWAS, S., 1972 . Ecology of Phytoplankton of the Volta Lake. 39: 277-288. 185 BISWAS, S., 1972 . Distribution of phytoplankton during the early development of Volta Lake (1964) (1965) (1966) (1967) (1968) . Anheteromeyenia biceps (Lindenschmidt, 1950 Periphyton Productivity and Radionuclide Accumulation in the Columbia River Quantitative Proportions of Glycogen in Certain Species of the Tendipedidae (Diptera) Larvae Chlorobium limicola Nads. (Chlorobacteriaceae) and the Distribution of Chlorophyll in some Lakes of the Mazur Lake District The Application of the Blytt and Sernander Classification to the Post-glacial Sediment Stratification in the Lakes of the North-Eastern Region of Poland An Attempt to Determine the Primary Production of the Green Sulphur Bacteria, Chlorobium limicola NADS Some Carotenoids in Chironomus annularius MEIG. Larvae (Diptera: Chironomidae) The Coloration of Specimens of Nereis zonata MAL. (Annelida, Polychaeta) from the Black Sea Carotenoids in the Muscles of Orconectes limosus (Raf.) (Crustacea-Decapoda) Carotenoids in Fish II Carotenoids in Fish II. Carotenoids and Vitamin A in Some Fishes from the Coastal Region of the Black Sea Carotenoids in Fish IV. Salmonidae and Thymallidae from Polish Waters Investigations of carotenoids in some faunal elements of the Adriatic Sea Comparative studies of carotenoids in the fauna of the Gullmar Fjord Investigations ofcarotenoids in some animals ,f the Adriatic Sea V Comparative studies of the carotenoids in some fauna of the Gullmar 0ord (Bohusl/in, Sweden). IV. Ascidiella aspersa (O.F. Miiller), (Tunicata) Carotenoids in fish. XIX. Carotenoids in the eggs of Oncorhynchus keta (Walbaum) Carotenoids in fish. XX. Carotenoids in Salmo gairdneri Rich. and Salmo trutta morphafario L Carotenoids in fish. XXII. Changes in the carotenoids in Cyprinus carpio L Carotenoids in Ostrea edulis L. (Bivalvia: Ostreacea) Carotenoids in fish Carotenoids in fish. XXIII. Syngnathidae family. 70 Carotenoids in fish. XXVI. Pungitus pungitus (L.) and Gasterosteus aculeatus L. (Gasterosteidae) Studies on Dyes Found in Chlorobium limicola NADS. (Chlorobacteriaceae) from the Wadolek lake On Carotenoids in the Carapace of Crayfish Crustacea: Branchiopoda) Investigations on Protein Amino Acids in the Larvae of Chironomus annularius MEIG (Diptera-Chironomidae) Relationship Between Extracellular and Cellular Production in the Sulphuric Green Bacterium Chlorobium limicola NADS. (Chlorobacteriaceae) as Compared to Primary Production of Phytoplankton Carotenoids in fish. XIV. The carotenoid content in the flesh of certain species from the Antarctic Presence of Bcarotene and xantophylls in two species of the genus Niphargus (Crustacea: Amphipoda) Biological Features of an Aestival Pond in Western Canada Physical and chemical features of a vernal temporary pond in western Canada Physical and Chemical Features of an Aestival Pond in western Canada Studies on the proteolytic enzymes of invertebrates constituting fish food Studies on the role of exogenous proteolytic enzymes in digestion processes in fish Donn6es r6centes sur la biologie des poissons dans le delta central du Niger Faune relicte sur le revers oriental du plateau de Bandiagara (Afrique occidentale) The influence of floating vascular plants on the diurnal fluctuations of temperature near the water surface in early spring Diurnal fluctuations of temperature near the bottom of shallow water bodies as affected by solar radiation, bottom color and water circulation Trois nouvelles esp~ces du genre Mixtacandona (Ostracoda, Cyprididae, Candoninae) Temperature Acclimation and Oxygen Consumption in Physa hawnii LEA (Gastropoda: Pulmonata) Trockenresistenz dreier Pisidium-Populationen (Bivalvia) in Abhfingigkeit von der relativen Luftfeuchtigkeit Etude des Migrations Nycth6m6rales du Zooplancton dans un Milieu Marin Peu Profond Macrobenthos of Pine Island Bayou in the Big Thicket National Preserve Cadmium toxicity in fishes Toxicity of mercury: a comparative study in air-breathing and non airbreathing fish The relations between mites of the genus Unionicola and the mussels Anodonta and Unio Study of the Hatching Process in Aquatic Invertebrates. VII. Observations on Hatching in Notonecta melaena KIRDALDY (Hemiptera, Notonectidae) and on Ranatra absona D. & Hemiptera, Nepidae). VIII. The Hatching Process of Amnicola (?) hydrobioides (ANCEY) (Prosobranchia, Hydrobiidae) A study of the hatching process in aquatic invertebrates. XVI. Events of eclosion in Calopsectra neoflavellus Malloch (Diptera, Tendipedidae). XVII. Hatching in Argulus megalops Smith (Crustacea, Branchiura) A Study of the Hatching Process in Aquatic Invertebrates. XXVI. The Eclosion from the Egg of Kellicottia longispina (Kellicott) (Rotifera) The use of algal assays and chlorophyll concentrations to determine fertility of water in small impoundments in West Virginia The occurrence and distribution of aquatic fungi in certain ponds of Varanasi Studies in Aquatic Fungi of Varanasi. IV. New Records and Notes on Taxonomy Observations on Nuclear Division in Vegetative Hyphae of Aquatic Fungi Fresh water chytrids from Varanasi (India). IV. Some polycentric forms Ecological Studies of Some Aquatic Phycomycetes Ecological Studies of Some Aquatic Phycomycetes. II. Fungi in Relation to Chemical Factors of the Water The Effect of Sewage on a Chain of Lakes in Indiana A Quantitative Evaluation of Pollution Effects on Stream Communities Rhizopodes Th6camoebiens du V6n6zu61a Mise au point de syst6matique dans le genre Lesquereusia Mise au point de syst6matique dans le genre Difflugia Structure de la th6que du genre Corythion Taranek Sur quelques Th6camoebiens r6colt6s en Norv6ge A Contribution to the Tilapia Nurseries on Lake Kariba During 1967/68 Hora6lla brehmi nov. gen. spec., ein neues R/idertier aus Indien Considerations about the Composition of Benthic Algal Flora in Lake Kinneret Aiiesterase-(Ali-E) activity Daphnia magna Straus as a parameter for exposure to parathion Description of a Community of Microorganisms in Purified Sewage Mixed with Rain Water from Storm-sewers.(A Method for the Determination of Microbiocoenoses) The biological and chemical effect of a central discharge of sewage into the 'Buiten IJ' near Amsterdam Quelques organismes sporadiques du plancton de la r6gion d' Amsterdam. I l A simplified method for the biological assessment of the quality of fresh and slightly brackish water Experience with a simple method for the biological evaluation of surface water quality Sublittoral Attached Epifaunal Development Larval Selecti.on of Substrate by the Bryozoa Discophorella and Cupuladria The chemistry of surface water in prairie ponds A Preliminary Study of Some Chemical Constituents of the Bottom Deposits of the White Nile Pigment composition during a Peridinium bloom in Lake Kinneret (Israel) Evolution de la temp6rature, de 1' oxyg6ne dissous et de la transparence dans la baie nord du Lac Tanganika A New Species of Basicladia on Australian Freshwater Turtles A Study of a Man-made Freshwater Reservoir in the Eastern Flanders (Belgium), with Special Reference to the Vertical Migration of the Zooplankton Workshop on Taxonomy and Biogeography The dry weight estimate of Chaoborusflavicans (Meigen) as a function of length and instars Rotifers from Rio de Oro On the continental copepod fauna of Maroeco. 52 Report on a collection of Cladocera and Copepoda from Nepal Drift of Macroinvertebrates in a Channel Carrying Heated Water from a Power Plant Contribution fi l' 6tude de l' adaptation des Tilapia (Pisces Cichlidae)/t la vie en milieu mal oxyg6n6 Remarques sur ie genre Contributions to our Knowledge of British Algae Investigations of the Aufwuchs of freshwater sponges. I. A quantitative comparison between the surfaces of Spongilla lacustris and three aquatic macrophytes Zooplankton abundance and diversity in central Florida grass carp ponds Raft Fouling in the Menai Strait Distribution and movement of taxophene in anaerobic saline marsh soils Effects of the Discharge of Thermal Effluent from a Power Station on Lake Wabamun Freshwater Diatomflora of the Panhalgarh Hillfort in the Kolhapur District Notes on the Diatomaceae from Ahmedabad and Its Environs. II. On the Diatomflora of Fountain-reservoirs of the Victoria Garden Notes on the Diatomaceae of Ahmedabad and Its Environs Some Fresh-Water Diatoms from Lonavla Hill-Station in the Bombay-State (Maharashtra) Notes on the Diatomaceae from Ahmedabad and its Environs. VI. On some Diatoms from Fountain Reservoir of Seth Sarabhai's Garden Diurnal variations in dissolved gases, hydrogen ion concentration and some of the important dissolved substances of biological significance in three temporary rock pools in the stream bed at Mettur Dam The limnology of two minor irrigation reservoirs near Madras. I. The Errakuppam Reservoir The Ecology of Solar Sewage Drying Beds in the Pirana Sewage Farm at Ahmedabad Aspects of Limno-biology, Primary Production and Fisheries in the Stanley Reservoir, Madras State. 32 Radionuclide Accumulation by Anodonta piscinalis Nilsson (Lamellibranchiata) in a Continuous Flow System The influence of body composition on the survival of juvenile salmon Two Techniques for Sampling Freshwater Habitats The Growth of Tilapia esculenta GRAHAM in Lake Victoria Seston dynamics and tripton sedimentation in the pelagic zone of a shallow eutrophic lake Growth of a Floating Aquatic Weed, Salvinia Under Standard Conditions References to the use of cultures of algae and protozoa The Growth Rates of the Estuarine Mollusc Musculista arcuatula Yamamoto and Habe (Bivalvia-Mytilidae) Diurnal Variations in Two Shallow Ponds in Delhi Comparative plankton ecology of five fish tanks in Delhi Studies on the Life Cycle of Pallisentis nagpurensis BHALERAO Acanthocephala) Parasitic in the Fish Ophiocephalus striatus (BLOCH) The effect of size on the consumption absorption and conversion of food in Ophiocephalus punctatus Bloch The effect of temperature on the consumption, absorption and conversion of food in Ophiocephalus punctatus Bloch Protein metabolism in Ophiocephalus punctatus Bloch The effect of starvation on energy turnover and protein metabolism in Ophiocephalus punctatus Bloch Sizebiased predation by the Gila topminnow Poeciliopsis occidentalis (Baird and Girard) Int6r& 6pid6miologique de la recherche des bact6riophages dans les eaux Der Sauerstoffverbrauch der Wasserpflanzen bei verschiedenen Sauerstoffspannungen A study of the relative efficiency of mustard oil cake and urea and the effect of salinity in plankton production in Indian fishponds Removal of 'Podon' polyphemoides from the Genus Podon Observations on the susceptibility of some protists and rotifers to predation by Asplanchna girodi Field Experiments on Egg Production in the Fresh-water Sponge Spongilla lacustris The oxygen consumption of Artemia salina (L.) in different salinities The Oxygen Consumption of Artemia salina Temperature-related Occurrence of Protozoa The life-history of Arneletus inopinatus (Sophlonuridae, Ephemeroptera) The Ephemeroptera, Plecoptera and Trichoptera Caught by Emergency Traps in Two Streams during 1958 Changes in Species Composition of Phytoplankton due to Enrichment by N, P and Si of Water from a North Florida Lake Short-term variability of chlorophyll a concentrations in Lake Ontario Diversity as a measure of benthic macroinvertebrate community response to water pollution Phosphate models, a gap to bridge Die 'Seeb~ille' -ein seltsamer Standort der Blaualgen Desarollo Larvario de Two New Species of Anabaena from Western India On the Larvicidal Properties of Charophytes The estimation of individual dry weight and standing crop of harpacticoid copepods Errors in the estimation of recruitment of early stages of Mesocyclops leuckarti (Claus) caused by the diurnal periodicity of eggproduction The productivity of Mesocyclops leuckarti (Claus) in lake Kinneret (Israel) Bathymetrical distribution and diurnal migrations of zooplankton in Lake Kinneret (Israel) with particular emphasis on Mesocyclops leuckarti (Claus) Sex ratio in Mesocyclops leuckarti (Claus) populations in Lake Kinneret (Israel) Population density, migration and food composition of Echinogammarus veneris (Heller) in lake Kiuneret (Israel) The influx of carbon into Lake Kinneret in 1971/1972 by Jordan zooplankton Distribution of the Family Hydropsychidae (Trichoptera) in the Savannah River Basin of North Carolina, South Carolina and Georgia Reservoir manipulations and benthic macroinvertebrates in a prairie river Ordinational analyses of benthic communities upstream and downstream of a prairie storage reservoir Relationship between Nutrient Availability and Content of Nitrogen and Phosphorus in Tissues of the Aquatic Macrophyte On the removal and qualification of algal aufwuchs from macrophyte hosts Wisconsin desmids. II. Aufwuchs and plankton communities of selected soft water lakes, hard water • lakes and calcareous spring ponds The ecology of two species of primitive ciliated protozoa commonly found in standing freshwaters (Loxodes magnus Stokes and L. striatus Penard) Commensal organisms in the colonies of Conochilus unicornis Rousselet. With a note on Phormidium mucicola The Microflora and -Fauna of a Quaking Bog in the Nature Reserve 'Het Hol' near Kortenhoef in the Netherlands Action comp6titive d' Helisoma duryi Wetherby (Planorbidae: Helisomatinae) ~t 1' 6gard de divers mollusques vecteurs de Trrmatodoses humaines et animales. I. Biomphalaria glabrata Say Action competitive d' Helisoma duryi Wetherby (Planorbidae: Helisomatinae) ~ 1' 6gard de divers mollusques vecteurs de Tr~matodoses humaines et animales. II. Biomphalaria pfeifferi Krauss The influence of Chironomus plumosus larvae on the exchange of dissolved substances between sediment and water Asymmetry and variation in Keratella tropica The Cultivation and PredatorPrey Relationship Chaenae vorax and Cyclidium sp A unique thermal aquatic environment: a microbial characterization Contributions to the Diatom Flora of South Africa. I. Diatoms of the Estuaries of the Eastern Cape Province Some Mineral Nutrient Studies of a Lowland Mere i n Cheshire On the fine structure of some Chrysophycean cysts Biological assessment of the euphotic zone in a turbid man-made lake The Role of Pisces: Schilbeidae) as a Predator in a Lowveld Impoundment in the Transvaal Observations on the Food Habits of Clarias gariepinus BURCHELL, the South African Freshwater Barbel (Pisces: Clariidae) in Transvaal Beitrag zur Rhizopodenfauna Deutschlands. I. Die Thekam6ben der Rh6n Monographische Studie der Gattung Hyalosphenia Stein (Rhizopoda, Testacea) Ice Analyses. Data from Three Norwegian Lakes Etude de deux facteurs inhibant la production de Tilapia melanopleura Dum La place des principes d' exp6rimentation en pisciculture Seasonal and Spatial Distribution of Phosphates, Nitrates and Silicates in Lake Champlain The Effect of Land Usage on Aquatic and Semiaquatic Vegetation at High Altitudes in Southern Africa The ecology of common planktonic crustacea of the freshwaters in the Netherlands Remarks on the present status of limnology in India based mainly on the publications in Hydrobiologia, and suggestions for the future approach On Scytonernatopsis Kisselewa -a little known genus of Myxophyceae Algal Flora and its Importance in the Economy of Rice Fields Studies on the Effect of Feeding some Freshwater Fishes with Scenedesmus obliquus (Turpin) Kuetzing Effect of Phormidium Extract on Growth and Yield of Vigna catjang (Cowpea) T. 5269 Effect of Algal Growth Hormones on the Germination of Paddy Seeds On Antibiotic Properties of Some Fresh Water Algae Effect of Algal Extracts of Phormidium Species on Growth and Development of Rice Seedlings Potentiation of zinc stress caused by parasitic infection of snails On the Salinity Tolerance of Eggs and Young Larvae of Phryganea grandis LINNE (Trichoptera) A Study of the Feeding Habits of Larvae of Limnephilus marmoratus CURTIS (Trichoptera) Living in the Fucus-belt of the Northern Part of the Baltic Spatial distribution of seston in an artificial mixed system H/imatologische Untersuchungen an Regenbogenforellen (Salmo gairdneri RICHARDSON). IV. Erythrozytenzahl und H/imatokrit H/imatologische Beobachtungen an Regenbogenforellen (Salmo gairdneri RICH.). V. Die Erythrozythenverteilungskurve H/imatologische Beobachtungen an Regenbogenforellen (Salmo gairdneri RICH absoluter H/imoglobingehalt des Einzelerytrozyten (HbE) und mittlere H/imoglobinkonzentration des Einzelerythrozyten (MCHC) Die Wirkumg subletaler Bleikonzentrationen auf die Chemorezeptoren zweier Siiszwasserfischarten Cabora Bassa: Some preliminary physico-chemical and zooplankton pre-impoundment survey results The Development of Eggs of Chirocephalus diaphanus PREVOST at a Low Temperature Delayed Development of Eggs of Chirocephalus diaphanus PREVOST The development of eggs of Chirocephalus diaphanus Pr6vost in relation to depth of water On Some Aspects of the Natural Occurrence of Chirocephalus diaphanus PREVOST A Method of Rearing Simulium ornatum var. nitidifrons (Diptera, Simulidae) in the Laboratory Hatching of the Anostracan Branchiopod Chirocephalus diaphanus PREVOST. I. Osmotic Processes and the Possible Role of Glycerol Observations on the settling of Simulium damnosum larvae on artificial substrates in the ivory coast A comparison of different methods used for the quantitative evaluation of biomass of freshwater phytoplankton Description of a new species of Anuretes (Copepoda: Caligidae) from Kerala Description of the hitherto unknown male of Hermilius (Copepoda: Caligidae) Partitioning of a Brackish Water Habitat by Copepod Species Zur Fortpflantzungsbiologie von Mesostoma Ehrenbergii (Focke, 1836) (Turbellaria) Abundanzdynamik und Reproduktionsphasen limnophiler Tricladen (Turbellaria) aus stehenden Kleingew/isser Utilization of Diversity Indices in Evaluating the Effect of a Paper Mill Effluent on Bottom Fauna Trophic changes, without changes in the external nutrient loading The Larva, Pupa and Imago of Hydrobaenus ephemerae Kief. (Chironomidae, Diptera) Eutrophication of the Salt Valley Reservoirs, 1968-73 I. The effects of eutrophication on standing crop and composition of phytoplankton Eutrophication of the Salt Valley Reservoirs, 1968-73. II. Changes in physical and chemical parameters of eutrophication Eutrophication of the Salt Valley Reservoirs The macroinvertebrate community: its development, composition and change in response to eutrophication Ten years quantitative data on a population of Rhinoglenafertdensis (Brachionidae, Monogononta) The Distribution of Sulphur in the Muds, Water and Vegetation of Lake Victoria Fixation of Sulphur in the Muds of Lake Victoria Estimation of the Biomass of Plankton The Seasonal Succession and Vertical Distribution of the Phytoplankton in Abbot's Pond Effects of the Discharge of Thermal Effluent from a Power Station on Lake Wabamun, Alberta, Canada. The epipelic and epipamic algal communities Seasonal succession, standing crop and determinants of primary productivity of the phytoplankton of Ministik Lake The relationship between planktonic algae and bacteria in a small lake Observations on substrate preference of marine phytal harpacticoids (Copepoda) Hydrobiologische Untersuchungen in einigen abwasserbelasteten niederrheinischen Die mikroklimatischen Verh/iltnissc in der wassernahen Luftschicht (Ein Beitrag zur Okologie der niederrheinischen Wasserpflantzengesellschaften). 21: 342-354. of'Swetganga'. A Thermal Spring of Bakreswar The effect of temperature and age structure on P/B for Bosmina longirostris in a small impoundment The midsummer crustacean plankton communities of seven small impoundments Chemische Zusammensetzung des organischen Detritus im Schlamm des Skadar-Sees und seine Dynamik im Verlauf des Jahres Communities of chironomid larvae in the Velika Morawa river Enzymatic release of phosphate in water from subarctic lakes in northern Sweden Phytoplankton composition and periodicity in a northeastern Quebec lake Der Vihtaj/irvi. Ein durch die Abw/isser einer Pulverfabrik azidotrophierter See Kurze Mitteilung fiber die Folgen einer Sprengung, zugleich ein kleiner Beitrag zur Kenntnis des winterlichen Planktons l~lber die vertikale Tag-und Nachtverteilung des A Bio-ecoiogical study of Nuggikari Lake in Dharwar Hydrobiological studies on the Ajwa reservoir, the source of raw water supply to the Baroda Water Works Algae of Importance and their Control in Water Supplies Some Observations on the Use of Sewage Stabilization Lagoons in India The Moulting Behaviour Of Palaemonetes varians (LEACH) (Decapoda Distribution of certain species of Utricularia in relation to their habitats in and round Jamshedpur Intervention des populations de Plumatellafungosa (Pallas) (Bryozoaire Phylactolfme) dans 1' autoepuration des eaux d' un 6tang et d' un ruisseau Accessory respiration in the climbing perch Anabas scandens The detritus limnology of Sathiar reservoir Une 6tude sur Clarias senegalensis Vai. dans la rfgion du lac Kossou (C6te d' Ivoire) A Preliminary Report on the Hydrobiology of Beypore River for the Year Observations on the genus Bosmina in New Zealand A review of the genera Calamoecia and Brunella (freshwater Copepoda) A preliminary biological study of the effects of pollution on Farmer's Creek and Cox's River Observations on carbon dioxide fixation in the Nant-y-Moch reservoir Seasonal migrations of the common goby, Pomatoschistus microps (KRYER) in Morecambe Bay and elsewhere Trophic status of Iowa lakes in relation to origin and glacial geology A Microbial Sampler for Freshwaters Modification of a freshwater sampler using evacuated tubes for microbial collections Algal biomass dynamics during colonization of artificial islands: experimental results and a model Notes on the growth and sporulation of a natural population of Aphanizomenon flos-aquae Parasitism by Unionicola spp. larvae on chironomids Freeze-dried hydrocarbon-utilizing yeasts for possible use in artificial seeding of oil spills Studies on the behaviour and substratum preference in juveniles of the marine prawn, Metapenaeus monoceros (Fabricius) La texture granulom6trique des s6diments et le r6gime alimentaire des oligoch&es limnicoles Die rezente Verbreitung der Fiusskrebse in Hessen The invertebrate fauna of the floating vegetation of Bung Borapet, a reservoir in Cenral Thailand La Phylog~n~se spfcifique d' un groupe de diatomfes -Campylodiscoideae -et sa cause Evaluation of Materials For Use in Algal Culture Systems Invertebrate Drift in the Snake River Population Dynamics of Growth of Young Sockeye Salmon in Lake Dalnee The Role of Zooplankton on the SelfPurification in Water Bodies Quantitative Relations of the Feeding and Growth of Daphnia pulex obtusa (KURZ) SCOURFIELD Beitrag zur Kenntnis der Art Cyclops tatricus Kosminsky (Crustacea, Copepoda) in der Tschechoslowkei Die organische Drift des Svratka-Flusses im Abschnitt zwischen zwei Talsperren (Vir, Kninicky) Unperiodische ,~nderungen im Stoffhaushalt yon Seewasscraquarien Some aspects of osmotic biology of the freshwater leech Neurosecretory changes induced by salt loading in the freshwater leech, Poecilobdella viridis (Blanchard) Some aspects of respiratory metabolism of a Penaeid prawn, Penaeus japonicus (Bate) (Crustacea, Decapoda, Penaeidae) Thermal acclimation induced compensation in biochemical constituents of the Indian freshwater leech, Poecilobdella viridis (Blanchard) Hormonal control of osmoregulation in the Indian freshwater leech, Poecilobdella viridis (Blanchard) Role of brain hormone in oogenesis of the freshwater leech, Poecilobdella viridis (Blanchard) during the annual reproductive cycle Implication of a hormonal principle in thermal acclimation of the Indian freshwater leech, Poecilobdell viridis (Blanchard): influence of brain homogenate on oxygen consumption Reproductive biology of the Indian freshwater leech, Poecilobdella viridis (Blanchard) Electrophoretic separation of protein pattern in different tissues of four marine penaeid prawns in relation to sex An unusual abnormality in the development of an eye of a marine Penaeid prawn Observations on the Developmental Variability of Camptylonema lahorense Ghose The Ingestion and Digestion of Yeast-Like Fungi by the Sponge, Microcionia prolifera Faunistische Notizen fiber Oligoch/iten und Hirudineen aus Island und Far6er A simplified technique to measure respiration rates of aerobic heterotrophic populations The Biological Cycles of Pelagic Copepods in the Lakes of Kamchatka Staining Techniques of the Neuroendocrine Tissues of Decapod Crustacea Effect of Pretreating the Seeds with Extracts of Phormidium foveolarum on Growth and Development of Maize Seedlings Effect of Algal Growth Promoting Substances of Phormidium foveolarum on Seedlings of Some Varieties of Wheat Temperature and oxygen in an Everglades alligator pond On the evolutionary pathways of speciati0n in the genus Notholca The uptake of manganese-54 by green algae (Protococcoidal chlorella), Daphnia magna, and fathead minnows (Pimephalespromelas) Biological, chemical and hydrological characters of coastal lagoons of Ghana The use of the Shannon-Wiener diversity index to delineate the horizontal distribution of crustacean zooplankton communities in Lake Superior Modifications 61ectrocardiographiques chez la carpe (Cyprinus carpio L.) au cours des changements de salinit6 Water chemistry changes during artificial aeration of Spruce Knob Lake, West Virginia Some remarks on Plumatella philippinensis Kraepelin Remarks on F. WIEBACH'S proposals for a revision of the genus Hyalinella A new species of Metacnephia CROSSKEY (Diptera: Simuliidae) from the south of England, with notes on its habitat and biology Studies on Production and Food Consumption by the Larval Simuliidae (Diptera) of a Chalk Stream A study on the faeces of some chalk stream invertebrates The Influence of Bentonite and Attapulgite on the Aggregation of Microorganisms and Organic Matter Changes in cephalothorax length of Diaptomus oregonensis as an indicator of generations Redescription of Neodiaptomus botulifer Kiefer and one of its related species (Calanoida: Copepoda) The freshwater Calanoida (Crustacea: Copepoda) of Singapore and peninsular Malaysia The Malaysian Tropodiaptomus (Copepoda: Calanoida) and its distribution Zoogeographical distribution of southeast Asian freshwater Calanoida Repartition spatio-temporelle, biomasse et production des populations zooplanctoniques du lac d'Aydat en p~riode estivale The rotifer fauna of the river Loire (France), at the level of the nuclear power plants The Effect of Temperature on Growth, Longevity and Egg Production in Chirocephalus diaphanus PREVOST Etude des Fluctuations Annuelles des Coprpodes et du Phytoplancton dans la Manche et le Golfe de Gascogne par la Mrthode d'Analyse de la Variance et du Coefficient de Correlation Studies on the Phytoplankton of the River Ganges, Varanasi, India, Part I. The Physico-Chemical Characteristics of River Ganges. Part II. The Seasonal Growth and Succession of the Plankton Algae in the River Ganges. Part III Studies on a series of small freshwater pools near St Dynamics of phytoplankton growth in the Waikato river Phosphate requirement of Anabaena oscillarioides and its ecological implications Growth interactions among bluegreen (Anabaena oscillarioides, Microcystis aeruginosa) and green (Chlorella sp.) algae Observations sur l'Ostreiculture ~ Cuba. I. Composition du Plancton Die Testaceesn in der Umgebung der Station Biischelbach (Spessart/BRD) Notes on Some Testacea (Protozoa, Rhizopoda) of the Yugoslavian Coast of the Adria near Rab Die Sukzession der Testaceen-Assoziationen (Protozoa, Rhizopoda) im rezenten und subfossilen Sphagnum des Obersees bei Lunz (Nieder6sterreich) Beitrag zur Kenntnis der Protozoenfauna Montanas (USA). I. Die Testaceen (Rhizopoda) in der Region des Flathead-Lake-Tales Byglandst}orden. Primary production and other limnological features in an oligotrophic Norwegian lake Microbial community fluctuations in a meromictic, antarctic lake Factorial correspondence analysis of Oligochaeta according to eutrophication level The chemical environment of tubificid and lumbriculid worms according to the pollution level of the sediment The Temperature of a British River Upstream and Downstream of a Heated Discharge from a Power Station The Distribution, Abundance and Life-Histories of Stoneflies (Plecoptera) and Mayflies (Ephemeroptera) in a British River, Warmed by Cooling-Water from a Power Station The Emergence of Insects from a British River Warmed by Power Station Cooling-Water. II. The emergence patterns of some species of Ephemeroptera, Trichoptera and Megaloptera in relation to water temperature and river flow, upstream and downstream of the cooling-water outfalls The Distribution of Plecoptera and Ephemeroptera in a Lowland Region of Britain (Lincolnshire) The emergence of Insects from a British River Warmed by Power Station Cooling-Water. Part 1. The use and performance of insect emergence traps in a large, spateriver and the effects of various factors on total catches upstream and downstream of the cooling-water outfalls Observations on Malachite Green in Relation to its Application to Fish Diseases Scanning microscopy of pharyngeal and oral teeth of the teleost Tilapia mossambica (Peters) Population interaction: a synchronizer for the persistent rhythmicity of Chaoborus larvae Systems and organismal aspects of phosphorus remineralization Determining fish avoidance of polluted water Limnology of Shagawa lake, Minnesota, prior to reduction of phosphorus loading Le Role Ecologique de la Temp6rature dans la Distribution de Deux Esp6ces Proches Parentes de Planaires d' Eau Douce: Etude Exp6rimentale Effects of methallibure on the external morphology, behaviour and chromatic physiology of the teleost, Tilapia mossambica (Peters) Mortality rates of Lares niloticus L. in Lake Nasser A simple system for the collection of leaf-derived faecal pellets of aquatic invertebrates A quantitative method for ranking the water quality tolerances of benthic species A Population Study on Larvae of the Damselfly Pyrrhosoma nymphula (SULZER) (Odonata: Zygoptera) The geographical distribution of Naididae (Oligochaeta) in Britain The Seasonal Periodicity of Emergence of Insects from two Ponds in Hertfordshire, England with Special Reference to the Chironomidae (Diptera: Nematocera) Le nannoplancton des c6tes d' Israel Quelques rotateurs rares observ6s en Hollande Observations in Guanotrophic Environments Note on some Brachionidae (Rotifers) from The Netherlands Toxicity tests with Daphnids: Its application in the management of water quality Respiration of different stages and energy budgets of juvenile Brachionus calyciflorus Contribution fi la connaissance des bact6ries des collections d'eau stagnantes et de leur r61e en hydrobiologie De 1' influence, sur les algues d' eau douce, des produits de d6composition spontan6e des substances organiques d' origine animale et v6g6tale Revision der europ~ischen Arten (Imagines ~z~) der Gattung Parachironomus LENZ (Diptera, Chironomidae) Systematische und phylogenetische Studie fiber die Gattungen Thienemanniola K I E F F E R und Corynocera ZETTERSTEDT (Diptera, Chironomidae) Ecological energetics of a Daphnia ambigua population Dehydrogenase Activity as Criterion for the Determination of Toxic Effects on Biological Purification Systems Bottom Deposits. A vital Self-Purification System in the Degradation of Polluting Material in the Natural Waters and in Biological Treatment of Effluents A Note on the Calculation of Ultimate Oxygen Demand Determination of Protease Activity in Bottom Deposits of Sewage Stabilization Ponds Determination of Urease Activity in Biological Purification Systems Studies on the Removal of Synthetic Detergents from the Water Phase of Bottom Deposits by Physical Adsorption and Biochemical Degradation Studies on Bottom Deposits of the Vaal River System A New Method for the Determination of the Anionic Adsorption Capacity of Bottom Deposits with Particular Reference to the Adsorption of Anionic Detergents A Study of Methods for the Classification of Bottom Deposits of Natural Waters Contribution fi la connaissance des Cop6podes de la R6gion Parisienne Electronic and Uterm6hl comparative techniques in quantitative analysis of freshwater particulates Recherches sur la Pr6cipitation des Carbonates Alcalino-terreux chez les Charac6es The Effects of the Formation of Lake Kainji (Nigeria) upon the Indigenous Fish Population The effect of nutrient enrichment on nitrogen fixation in the Bay of Quinte The Design of a Steady-State Gradient for the Study of Populations in a The Response of Moina brachiata (JURINE) 1820 to Biological Oxygen Demand, Oxygen, and Light Phytoplankton Succession in a Eutrophic Lake with special reference to Blue-Green Algal Blooms Liste des Cyclopoides gnathostomes Un Cyclopide (Crustac6 cop6pode) troglobie de Madagascar. Avec remarques sur un groupe de Cyclopides tr6s 6volu6s, cavernicoles et musicoles Ecological studies of spores of aquatic hyphomycetes in the Cringle Brook Experimental Studies on the Seasonal Variation of the Rotifer Keratella cochlearis (GOSSE) Ergebnisse der Osterreichischen Iranexpedition 1949/50. Limnologische Beobachtungen an Iranischen Binnengew/issern Studies on osmotic balance and its control in the freshwater mollusc Parreysia corrugata A study on the crystalline style of the freshwater mussel, Parreysia corrugata Studies on the Respiration of the Freshwater Mussel Parreysia corrugata The Diatoms of Three Dune Waters in the Netherlands: Quackjeswater, Breede Water and Vogelmeer La germination de la zygospore et l' ontogrnrse des filaments chez Spirogyra stictica WILLE Etude floristique et 6cologique de la florule algale de deux biotopes dans la vallre de la Dyle Etude Ecologique et Floristique du plancton de Cinq Biotopes de la Vallre de la Dyle Monitoring river periphyton with artificial benthic substrates Mucus antigenicity in sea anemones and corals Induction of sexual reproduction and resting egg production in Brachionus plicatilis reared in sea water The Oxygen Consumption of Theodoxus fluviatilis (L.) and Potamopyrgus jenkinsi (Smith) in Brackish and Fresh Water The oxygen consumption of Potamopyrgusjenkinsi (Smith) Contributions to our knowledge of British algae Contributions to our knowledge of British algae A sedimentation technique for counting algae and other organisms Contributions to our Knowledge of British Algae Contribution to our Knowledge of British Algae Some New or Rare Chrysophyceae from the English Lake District The Inverted Microscope Method of Estimating Algal Numbers and the Statistical Basis of Estimations by Counting Particulate and dissolved organic matter in a small partly forested Ontario stream The uptake of dissolved organic matter by a small spring stream Corixidae (Hemiptera) of an evolved lake in the The taxonomy of the British species of Taxonomy of the nymphs of the British species of Leptophlebiidae (Ephem The Corixidae (Hemipt.) of some Danish lakes Corixa lacustris Macan a synonym ofC The Temperature of a Small Stony Stream The fauna in the vegetation of a moorland fishpond as revealed by different methods of collecting Changes in the fauna of the stony substratum of lakes in the English Lake District Notes on Gammarus pulex in the English Lake District The temperature of a moorland fishpond The Interaction of Light Intensity and DDT Concentration Upon the Marine Diatom Preferenceavoidance reactions of crayfish to sublethal concentrations of cadmium Species composition, distribution and abundance of oligochaetes in the Kanawha river, West Virginia Emergence patterns of three 158 The distribution of zooplankton in the The microdistribution of Mayflies (Ephemeroptera) in Myriophyllum beds in Pennington creek Aquatic microbiology with reference to tannin degradation An Attempt to Control Bilharziasis by Fish The Major Anions in Lake Maryfit Waters Catalogue Syst6matique des larves de Trichopt6res R6colt6es dans la r6gion des Eyzies Notes on the Biology of Gammaruspulex in the River Endrick A multipurpose modular limnological sampler Utilization of autochthonous macroinvertebrate drift by a pool fish community in a woodland stream A Study on the Rate of Water Transport of the Clam Katelysia opima in relation to Environmental Conditions Subbaromyces aquatica, a New Ascomycete from India Un nuovo periodo di osservazioni sul fitoplancton del lage di Nemi Contributions to the knowledge of Tentipedidae of Padova and Venice Le Phytoplancton estival de la 'Costa Brava' catalana en 1946 A new limnological method for the investigation of thin-layered epilithic communities Une Ja(rna dans les eaux douces des Bal6ares, Ja6rna balearica n.sp. (Isopoda Asellota) Modifications induced by different temperatures on the cells of Scenedesmus obliquus (Chlorophyceae) Correlations entre certains caract6res synth6tiquesdes populations de phytoplancton A study of the relationship between aquatic insect growth and water temperature in a small stream Recherches hydrobiologiques darts les rivi6res du Congo Oriental Physico-chemical Aspects of Lake McIIwaine (Rhodesia), A Eutrophic Tropical Impoundment Eutrophication of a Tropical African Impoundment (Lake McIlwaine, Rhodesia) Marine Phytoplankton Collected at Wake Island Phytoplankton Observations in the Eastern Carribean Sea An ecological study of a small New Zealand stream with particular reference to the Oligochaeta Temperature Fluctuations Within English Lowland Ponds Use of a multiple addition bioassay to determine limiting nutrients in Eagle Lake California Populations and production of bacteria in the plankton of two shallow lakes Satiation time and predatory behaviour of the dragonfly nymph Mesogomphus lineatus Studies on predation on mosquito larvae by the fish Macropodus cupanus Patterns of emergence, import of egg energy and energy export via emerging dragonfly populations in a tropical pond Mortality curves of blind cave crayfish (Orconectes australis australis) exposed to chlorinated stream water Dynamics of manganese, cadmium, and lead in experimental power plant ponds Distribution of Mercury, Cadmium, Lead and Thallium in a Eutrophic Lake Epibiontische Verhiiltnisse auf den Kalktuffwasserf'fillen des Flusses Krka in Dalmatien Contributo alia conoscenza dell' ecologia delle biocenosi sulle cascade travertinose nella regione Carstica Jugoslava Les formes zoog6nes de tufs et leur formation dans la r6gion des Lacs de Plitvice en Yougoslavie The Application of Die Photosynthese des Phytoplanktons vom Einige Gedanken zur Frage des A seasonal and ecological study of the phytoplankton of Loch Lomond Diurnal variation of phytoplankton in Loch Lomond Seasonal fluctuation of water quality (nutrients and pigments) in lower Delaware Bay Seasonal fluctuation of zooplankton populations in lower Delaware Bay Studies on the grazing rate of Notholca squamula Miiller on Asterionella formosa Hass. at different temperatures On the ecology of Notholca squamula Miiller in Loch Leven Observations on some common parasites of Bagrus docmac Forskahl (Pisces: Siluroidea) of Lake Victoria To New Quantitatiye Samplers for Aquatic Phytomacrofauna Further observations on Coelomyces (Blastgcladiales, Coelomomycetaceae) parasitic in Chironomidae (Diptera) in Marion Lake Effects of artificial destratification on zooplankton of two Oklahoma reservoirs The Limnology of a Thermal Lake: Lake Rotowhero, New Zealand. 1. General Description and Water Chemestry A chemical characterization of an algal inhibitor obtained from Chlamydomonas An ecological study of the rare rotifer species Trochosphaera solstitialis (Thorpe 1893) and the first report of the male Limnological characteristics of several lakes on the lake Wales Ridge, South-central Florida Physical Ecology of Some New Zealand Supralittoral Pools Some effects of current velocity on periphyton communities in laboratory streams Substrate Preferences and Invasion Behaviour Exhibited by Larvae of Nilodorum brevibucca The changing role of terrestrial and autochtonous organic matter in newly flooded lakes Density and distribution in laboratory populations of midge larvae (Chironomidae: Diptera) The Bottom Fauna and Sediments in a Drying Phase of a Saline African Lake (L. Chilwa, Malawi) The Rate of Nutrient Release From Grass and Dung Following Immersion in Lake Water The Effect of Density and Mutual Interference by a Predator: A Laboratory Study of Predation by the Nudibranch Coryphella rufibranchialis on the Hydroid Tubularia larynx Variation in Aufwuchs at Six Freshwater Habitats in Terms of Carbon Biomass and of Carbon Food habits of channel catfish in a reservoir receiving heated waters Settlement, Growth and Competition in Sublittoral Populations of Barnacles Sublittoral Fouling Communities on Northern Coasts of Britain Behaviour and Local Distribution of the Freshwater Oligochaete Nais pardalis Piguet (Fam. Naididae) Toxicity of Zinc to Schistosoma mansoni Cercariae in a Chemically Defined Water Medium Productivity and Distribution of Trichoptera Larvae in a Colorado Mountain Stream An initial measurement of photosynthetic productivity in Lake Tanganyika The colonization cycle of Amphinemura standfussi Ris (Ins.: Plecoptera) in the Abisko area Population Ecology of Gammarus lacustris SARS in Big Island Lake. I. Habitat Preference and Relative Abundance A model analysis of the ecosystem of the Rybinsk Reservoir Beitrfige zur Kenntnis des Kantons Ziirich Beitrag zur Kenntnis der Algenflora des Urner Reusstales (Zentralschweiz) Physicochemical Conditions of Deposition of Bacillariophyta in Davis Lake Exp6rimentation hyperbare (1 l0 Atmosph6res) chez un crustac6 amphipode talitridae Fluctuations in the Relative Abundance of the Weed Fauna of a Tropical Freshwater Fish Pond Studies on the Bottom Fauna in a Tropical Fish Pond Studies on the Zooplankton of a Tropical Fish Pond Seasonal Trends in Physicochemical Factors and Plankton of a Freshwater Fishpond and their Role in Fish Culture On the resurrection of the Cladoceran species Chydorus reticulatus Daday, 1898 (Chydoridae, Cladocera) and its relationship to Chydorus ventricosus Daday Changes in phosphorus concentrations in a eutrophic lake as a result of macrophyte-kill following herbicide application Donn6es biologiques sur un gast~ropode prosobranche rfcemment introduit en C6te d' Or Apropos de quelques espfces du genre Trachelomonas Ehrbg. et du genre Strombomonas Deft. trouvfes aux Pays Bas Remarks on Microgromia socialis Apropos de quelques espfces du genre Trachelomonas Ehrbg. et du genre Strombomonas Deft. trouvfes aux Pays Bas New observations on a species of the genus Bicosoeca A propos de quelques espfces du genre Trachelomonas Ehrbg. et du genre Strombomonas Deft. trouvfes aux Pays Bas (III) On the Horizontal Distribution of the Profundal Bottom Fauna in a Limited Area of Central Lake M/ilaren, Sweden. Part I. Studies on the Distribution of the Bottom Fauna On the Horizontal Distribution of the Profundal Bottom Fauna in a Limited Area of Central Lake M/ilaren A Limnological Comparison of Two Small Idaho Reservoirs The Chaoborus (Diptera: Chaoboridae) component of the invertebrate drift on the Mwenda river Role d' une halocline sur leur distribution et sur les rapports oxygenephosphate. Notion de bilan Community Dynamics of the Benthic Fauna in a Woodland Springbrook Microdistribution of benthic invertebrates in a rocky mountain (USA) stream R6ponse des Larves de Perla burmeisteriana CLAASSEN (Plecoptera) aux variations de la pression hydrostatique Oxygen uptake through water during early life of Anabas testudineus (Bloch) A comparative study of physicochemical characteristics of river and lake water in Central India Study of Age and Growth in Lares niloticus (Centropomidae) at Khartoum The Ecology of Vascular Hydrophytes on Lake Kariba A bioassay study of effects of zooplankton, iron and NTA on the phytoplankton productivity of a marl lake A peculiar method of sexual reproduction in certain members of Chlamydomonadaceae Nitrogenfixation in the littoral benthos of an oligotrophic lake Communication by radio waves as found in Elasmobranchii and Teleostei fishes Role of the lateral lobes in the control of certain physiological processes in Bulinus truncatus (Gastropoda, Puimonata) A New Species of the Genus Prionospio (Annelida: Polychaeta) Infestation of the Pearl Oyster Pinctada margaritifera (LINNE) by a New Species of Polydora in Kuwait Polychaetous Annelids collected by 'Umitaka-Maru' from the Arabian Gulf Competitive Relatioship Between Balanus amphitrite amphitrite and Pomatoleios kraussi with Special Reference to their Larval Settlement Relationship between biofouling and growth of the pearl oyster Pinctadafucata (Gould) in Kuwait, Arabian gulf A hydrobiological survey of a polluted canal Transversotrema chackai Sp. Nov, adult of Cercaria chackai from Fishes (Digenea: Transversotrematidae) Effect of Temperature Variations on Growth, Reproduction, Amino Acid Synthesis, Fat and Sugar Content in Ulvafasciata DELILE Plants Effect of Different Light Intensities on Growth, Reproduction, Amino Acid Synthesis, Fat and Sugar Content in Ulvafasciata D E L I L E The Marking of Diatoms on Slides Donn6es sur la distribution des 616ments biog6nes dans 1' estuaire du Tamar ~i Plymouth The Zooplankton and the Zoobenthos of the White Nile and Adjoining Waters in the Republic of Sudan Some aspects of the feeding biology of benthic herbivores Seasonal succession of algae in a eutrophic stream in southern England Seasonal succession of planktonic and epiphytic algae in a canal in Southern England Relative availability and utilization of algae in two subarctic rivers Some factors influencing the density of subarctic populations of Bosmina longirostris, Holopedium gibberum, Condonella cratera and Ceratium hirundinella Some factors influencing the density of invertebrates near a sewage outfall Influence of food availability and other factors on the composition, structure and density on a subarctic population of benthic invertebrates Diversity and indicator species as measures of wal~er pollution in a subarctic lake Seasonal succession of phytoplankton in a large subarctic river Zooplankton, and related phytoplankton cycles, in a eutrophic lake Pollution effects on the phytoplankton-zooplankton relationships in an inshore environment Another rediscovery of commensal Vorticella upon Conochilus in Czechoslovakia Biological Investigations of an Infiltration Area and Experiments with Some Algicides Caspian Fauna in Fresh Waters outside the Ponto-Caspian Basin Polyphemidae of the Ponto-caspian Basin Relation entre habitat et peuplements de poissons: essai de d6finition d' une m6thode num6rique pour les rivi6res nordiques Bathymetric food habit changes in the antarctic fish Seasonal Changes in the Waters of Lake Chilwa (Malawi) in a Drying Phase Changes in the Fauna and Flora of a Nutrient Enriched Lake A Survey of the Bottom Fauna of Streams in the Scottish Highlands. Part I. Composition of fauna Causes of mortality in the endemic Tilapia of Lake Chilwa (Malawi) Some aspects of redox trends in the bottom muds of a mesotrophic Bayou estuary Dissolved glucose in a Bayou estuary, possible sources and utilization by bacteria Respiratory Metabolism in Pacifastacus leniusculus (DANA) (Crustacea: Decapoda) as Related to its Ecology Factors controlling the seasonal incidence of Pandorina morum (Mull.) Bory (Chlorophyta, Volvocales) in a small pond Phytoplankton Associations in Two Pools and Their Relationships with Associated Benthic Flora Benthic macroinvertebrates of northwestern Lake Victoria, East Africa: abundance, distribution, intraphyletic relationships and relationships between taxa and selected element concentrations in the lake-bootom sediments Effects of mine effluent on uptake of Co Observations sur la faune unicellulaire des eaux chaudes de rEst Alg6rien Studies on the enzymatic activities related to varied pattern of diets in the airbreathing catfish Studies on intestinal protease" isolation, purification and effect of dietary proteins on alkaline protease activity of the air-breathing fish Studies on the breeding habits and development of the brood-pouch of a viviparous prosobranch Embryology and development of a freshwater prosobranch, Melania scabra Studies on growth indices of the fresh water prosobranch, Melania scabra Qualitative und quantitative Untersuchungen der Fische der Fulda Diatomeendrift in Fliessgew/issern Experimente zum Bewegungsverhalten von einzelligen Fliesswasseralgen Nitrogen and phosphorus fertilization of aquatic vascular plants and algae in replicated ponds I. Initial response to fertilization Limnological Studies on Freshwater Ponds of Hyderabad -India. I. The Biotope Limnological Studies on Freshwater Ponds of Hyderabad -India. II. The Biocenose. Distribution of unicellular and colonial phytoplankton in polluted and unpolluted environments Limnological Studies of Euglenineae in certain Polluted and Unpolluted Environments Limnological Studies on Freshwater Ponds of Hyderabad -India Limnological Studies on Freshwater Ponds of Hyderabad, India IV. The Biocenose, Periodicity and Species Composition of Unicellular and Colonial Phytoplankton in Polluted and Unpolluted Environments A Preliminary Study of Vertical Movement of Eudorina elegans and Trinema lineare during a Bloom Caused by Them A comparison of the north-and south european associations of Corallina officinalis L A Limnological Survey of Lake McIlwaine The biology of Simocephalus acutirostratus King (Cladocera: Daphnidae) -hatchability of the parthenogenetic egg cultured in artificial media Laboratory studies on the longevity, instar duration, growth, reproduction and embryonic development in Scapholeberis kingi Sars Study of the in vitro development of the parthenogenetic egg of Daphnia carinata King (Cladocera: Daphnidae) The influence of site and position in the plant community on the nutrient distribution in, and content of Eichhornia crassipes The application of growth kinetics to the control of Eichhornia crassipes (Mart.) Solms. through nutrient removal by mechanical harvesting Seasonal variations in biochemical constituents of the Clam, Paphia laterisulca Effect of some extrinsic factors on the respiratory metabolism of the freshwater Leech, Poecilobdella viridis: oxygen tension, pH and salt concentrations Annual changes in the brain neurosecretory profile of the Indian freshwater leech, Poecilobdella viridis (Blanchard) in relation to reproduction Role of eyestalk hormone in the carbohydrate metabolism of a marine penaeid prawn, Parapenaeopsis hardwickii (Miers) (Crustacea, Decapoda, Penaeidae) Seasonal reproductive cycle in the mussel Biochemical Studies in the Freshwater Mussel Osmotic Behaviour of the Freshwater Mussel, Parreysia corrugata Seasonal variation in the biochemical composition of Mytilus viridis at Ratnagiri on the west coast of India Effect of Temperature and Salinity on the Heat Tolerance in the Hermit Crab Moulting and Colour Changes in the Prawn, Caridiana weberi The Oxygen Consumption of Mayfly (Ephemeroptera) and Stonefly (Piecoptera) at Different Oxygen Concentration Studies on fresh-water Protozoa of South India Studies on the freshwater Oligochaeta of South India Studies on the freshwater Protozoa of South India III: Euglenoidina Check-list of freshwater Oligochaeta of the Indian Sub-continent and Tibet Some Thecamoebae (Rhizopoda: Protozoa) from India Oligochaeta: Naididae) new to Australia Some fresh-water oligochaeta of Nagpur The Nostocaceae of Kanpur -II Vertical distribution of marine wood boring animals in Cochin Harbour The Settlement and Growth of Major Fouling Organisms in Cochin Harbour Denitrification by the sessile microbial community of a polluted river A wadhiella -a new genus of Coleochaetaceae from India Ecological Observations on the Marine Algae of Ghardaqa Ecological Studies of some Marine Algae from Alexandria The Effect of Some Organic Micronutrients on Some Marine Algae from Alexandria Effect of Certain Trace Elements and Soil Extract on Some Marine Algae An Electro-Chromatographic Investigation of the Amino Acid Pattern of Some Marine Algae from Alexandria The Effect of Different Nitrogen and Carbon Sources on Amino Acid Synthesis in Ulva, Dictyota and Pterocladia Oxygen Balance in Micro Stabilization Ponds Effect of salinity and temperature variations on Pterocladia capillacea Observations on Pseudocycnus armatus (BASSETT-SMITH) Parasitic on lndocybium guttatum Cyclomorphosis of Brachionus calyciflorus Pallas Taxonomic Notes on the Indian Species of Keratella (Rotifera) Rotifer Fauna of Rajasthan On a Collection of Conchostraca (Crustacea: Branchiopoda) from South India, with the Description of two New Species Calcium as a limiting factor in the biology of Biomphalaria pfeifferi (Krauss), (Gastropoda: Planorbidae) Biomphalaria glabrata (Say) and Helisoma trivolvis (Say) (Gastropoda: Planorbidae) to cationic alterations of the medium Biomphalaria glabrata (Say) and Helisoma trivolvis (Say) (Gastropoda: Planorbidae) in response to cationic alterations of the medium Erniihrungsbiologie einer rhipidoglossen Kiemenschnecke Temperature Characteristics of Sodon Lake. A dichothermic lake in Southeastern Michigan The Hydrology of Lake Victoria Nitrogen and Phosphorus Release from Decaying Water Milfoil On the Zoogeography of springs On Life Conditions in Torrential Streams The non-sheated Oscillatoriaceae of Northern Florida Production and ecology of eelgrass (Zostera marina L.) in the Grevelingen estuary, the Netherlands, before and after the closure Studies on the abundance, biomass and vertical distribution of larvae and pupae of black flies (Simuliidae, Diptera) on plants of the Grabia river Changes in the aquatic flora along a stretch of the river Ulmeiilven, N. Sweden, following hydro-electric exploitation Effects of population density and of presence of Gammarus pulex L. (Amphipoda) on the growth in larvae of On the Species of the Genus Desmidium from Hokkaido Contribution to the Marine Algae from the Coast of West Pakistan III Animal ecology of a New Mexico springbrook Beitr/ige zur Limnologie und R/idertierfauna Ungarischer Natrongew/isser Canadian Rotifers. II Thermal Stratification and Annual Heat Budget of a Florida Sinkhole Lake Plankton communities of three central Florida lakes An Ecological Study of the Fauna Inhabiting the Sublittoral Marine Alga Saccorhiza polyschides (LIGHTF Direct Observations on the Sublittoral Marine Algae of Argyll The effects of heavy metals on microbial biomass in sediments of Palestine Lake Comparison of a few systems for the determination of saprobic and trophic degree on the basis of plankton data How to make permanent fluid mounts of plankton organisms A limnological study of the Afram arm of Volta lake A Population of Mayfly fauna (Ephemeroptera) and the biology of the species Potamanthus luteus (L.) in a warmed stretch of the Oslava river Ecology ofDiaptomus leptopus s.a. FORBES 1882 (Copepoda: Calanoida) under Temporary Pond Conditions Relationship Between Nutrient Concentration, Phytoplankton Density, and Zooplankton Density in Nutrient Enriched Experimental Ponds Response of three phytoplankton bioassay techniques in experimental ponds of known limiting nutrient Vertical distribution of monosaccharides in lake water Chemical composition of labile fractions in DOM Changes in submerged plants at the south end of Cayuga Lake following Tropical Storm Agnes Mineral impact of lakes as background for their biogenic dynamics Bimodal oxygen uptake in juveniles and adults amphibious fish Testing a method for measuring dissolved oxygen concentrations in microhabitats in fresh water Life history and growth of Asellus aquaticus (L.) in relation to environment in a eutrophic lake in Norway. 59 The distribution, abundance and trends in the establishment of the family Schilbeids (Osteichthyes: Siluriformes) in lake Kainji Sex, reproductive cycle and variations in the fecundity of the family Schilbeidae (Osteichthyes: Siluriformes) in lake Kainji The food and feeding habits of Eutropius niloticus (Ruppell), family Osteichthyes: Siluriformes) in lake Kainji Digestive enzymes in the alimentary tracts of three tropical catfish Hydrobiological Studies on the Tugela River System. Part I. The Main Tugela River Hydrobiological Studies on the Tugela River System. Part II. Organic Pollution in the Bushmans River Hydrobiological Studies on the Tugela River System. Part III. The Bufalo River Hydrobiological Studies on the Tugela River System. Part V. The Sundays River Diatom assemblages of the Cuyahoga river Phosphorus in a model pond study. II. Sediment fertility and water concentrations Phosphorus in a model pond study. I. Sediment selection and preparation The physical-chemical limnology of a desert reservoir Flow-Through Polarographic Respirometry for Aquatic Animals Photoacoustic spectroscopic analysis of marine phytoplankton A Test of a Model for Estimating Production in the Sea Benthic fauna species diversity in six Central Florida lakes in summer Prediction of phosphorus and nitrogen concentrations in lakes from both internal and external loading rates Abundance patterns of filter-feeding caddisflies (Trichoptera: Hydropsychidae) and seston in a Montana (USA) lake outlet The reproductive biology of Pellonula afzeliusi Johnels and Sierrathrissa leonensis Thys Audenaerde in Lake Kainji The fish fauna changes and the place of clupeids in lake Kainji Some Factors Affecting the Respiration of some Aquatic Plants. 23 Nouvelles Donn6es sur les Desmidi6es des Environs de Matadi (Congo beige) Is Arcella amphora van Oye identical with Arcella apicata Schaudinn ? Contribution fi la connaissance des Desmidi6es du Congo belge On the Thecamoeban fauna of New Zealand with description of four new species and biogeographical discussion Etude sur ies Rhizopodes des marais du Sud-ouest d' Uvira (Congo Beige) Quelques Desmidi~es dites Arctiques Alpines des marais du sud-ouest d' Uvira (Congo Beige) Faune rhizopodique du plateau de Kundulungu (Congo Beige) avec considerations concernant la r6partition g6ographique des Rhizopodes Contribution fi la connaissanee de la distribution g~ographique de quelques Alloxan: a growth accelerator for nitrogen-fixing blue-green alga The effect of hormones on heterotrophic growth of a blue-green alga Westiellopsis prolifica Paramoeba: A Common Marine Genus Observations on Reproduction in Scytonematopsis ghazipurensis PANDEY & MITRA On the morphology and life-history of a form of Gloeocapsa showing some new stages Influence of temperature and body weight on mosquito predation by the dragonfly nymph Mesogomphus lineatus Effects of feeding and starvation on growth and swimming activity in an obligatory air-breathing fish Review of the genera of algae described by Stackhouse Effects of two organophosphorus insecticides on the chlorophyll a and pheopigrnent concentrations of standing ponds Observations on the hypophysation of murrels (Ophiocephalidae) Sur les genres Keratella, Synchaeta, Polyarthra et Filinia d' un lac italien The genus Euchlanis (Rotatoria) in the marsh of Fucecchio (Central Italy) with description of a new species The distribution of Chironomid larvae in relation to chloride concentration in a brackish water region of the Netherlands Some preliminary observations on the enhancement of phytoplankton growth by low levels of mineral hydrocarbons Differential Effect of Chloramphenicol and Actinomycin D on Protein Synthesis in the Decapod Crustacean Upogebia littoralis Observations on the hydrography and inshore plankton of the Bay of Bengal off Balasore Succession in Zoo-and Phytoplankton in a Sewage Stabilization Pond M6thodes de mesure du m6tabolisme respiratoire chez les animaux aquatiques Relation entre poids frais et poids sec chez quelques invert6br6s d' eau douce Studies on a natural population of Cyclestheria hislopi (Baird) (Conchostraca: Crustacea) Some parasitic fungi from India living on aquatic plants Notes on Methods for Study of Zoosporic Fungi A method for determining the P/R ratio in running waters A classic example of congeneric occurrence of Diaptomus species Plankton secondary productivity and biomass: their relation to lake trophic state Data on Temperature, Oxygen, Sediment and Transparency of the Water in the Northern Part of the Delta Area of the Netherlands between On the Rotifer Plankton of some East African Lakes Variation in the genus Keratella Toward a Classification of Lotic Habitats In situ measurements of net primary production in a Colorado mountain stream Fish Vertebrae and Scales in a Sediment Core from Esthwaite Water Vagotonicit6 et rrsistance fi la salinit6 chez quelques Trlrostrens d' eau douce La respiration tissulaire des branchies des Trlrostrens d' eau douce The Environmental Toxicity of Crassin Acetate using Tetrahymena pyriformis as a Model Epilithic periphyton and detritus studies in a subalpine stream Structure et fonctionnement des 6cosystrmes du Haut-Rhrne franqais. 14. Etude des prrfrrences alimentaires de la loche franche (Noemacheilus barbatulus L.) par une mrthode des points modifire Critical problems with extraction of ATP for bioluminescence assay of plankton biomass Phytoplankton production and phosphorus supply in Cayuga lake Fish population changes in the Volta Lake in Ghana during its first sixteen months Distribution, Abundance and Food of Commercial Fish in the Black Volta and the Volta Man-Made Lake in Ghana during its First Period of Filling Population Changes in Aquatic Invertebrates Living on Two Water Plants in a Tropical Man-Made Lake Chironomidae (Diptera) from Light Catches on the Man-Made Volta Lake in Ghana Macroinvertebrates of Flooded Trees in the Man-Made Volta Lake (Ghana) with The Bottom Fauna of the Rapids of the Black Volta River in Ghana Distribution, abundance and food of commercial fish in the Black Volta and the Volta man-made Lake in Ghana during the filling period R6actions cardiorespiratoires observ6es chez la sole au cours de 1' ensablement Le rythme respiratoire de la carpe (Cyprinus carpio L.) et ses relations avec le taux de l' oxygrne dissous dans le biotope The Fifth Instar Larva of Potamophylax stellatus (Curtis) (Limnephilidae: Trichoptera) Some Factors Affecting the Net-Spinning of Larvae of the Caddisfly Hydropsyche instabilis CURTIS (Trichoptera, Hydropsychidae) A Quantitative Study of the Summer Phytoplankton in Four Central North Carolina Ponds L' influence du cadmium sur l' activit6 de la phosphatase alcaline dans divers tissus de Lepomis gibbosus L. (Pisces; Centrarchidae) Etude Ecologique Comparre des Populations d' Ostracodes dans deux Etangs de Pisciculture en Haute Belgique Etude exprrimentale du comportement in situ d' une population diatomique maintenue en enceinte dialysante Constituents of unionid extrapallial fluid. II. pH and metalion composition Coelomomycetaceae: Blastocladiales. Its distribution and the eco!ogy of infection pools in New Zealand Coelomomyces opifexi (PILLAI & SMITH) Coelornomycetaceae: Blastocladiales. II. Experiments in sporangial germination Coelomomyces opifexi (PILLAI & SMITH) Coelomomycetaceae-Blastocladiales. III. The Laboratory Infection of Aedes australis (ERICHSON) Larvae Observations on the Incidence and Seasonal Fluctuations of Certain Crustacean Larvae in the Plankton of the South-West Coast of India Morphology of the adult and juvenile stages of Microtendipes rydalensis (Edw.) comb. nov. (Diptera, Chironomidae) Micropsectra aristata, a new species of chironomid (Dipt. Nematocera) from southern England Some ecological aspects of the edible oyster Crassostrea cucullata (Born) occurring in association with mangroves in Negombo lagoon Protozoan species accrual on artificial islands in differing lenthic and wetland systems Some problems in the embryogenesis of Habrotrocha rosa Donner The determination of the chromosome number of Habrotrocha rosa Donner Methods for obtaining an axenic culture of Habrotrocha rosa Donner Ecornorphic Variation in Gemmoscleres of Ephydatiafluviatilis LINNAEUS (Porifera: Spongillidae) with Comments upon its Systematics and Ecology Surfacing activity and food utilization in the air-breathing fish Polyacanthus cupanus exposed to constant Po2 The vertical distribution of macrobenthos within the substratum of the Brazos river Fruktifikationen und Keimlinge bei Caloglossa Murrayellopsis dawsonii POST gen. et spec. nov. aus einem marinen Goldfisch-Nest Bostrychia hamana-tokidai Caloglossa beccarii im Golf von Mexico Bostrychia scorpioides in Westafrika Caloglossa stipitata in Florida Caloglossa ogasawaraensis in Westafrika Bostrychietum auf den Philippinen Zur Okologie des Bostrychietum Zur Verbreitungs-(~kologie des Bostrychietum Litterfall, litter composition, and flux of particulate organic material in a coastal plain stream The Ecology of Algae in the Moruya River pH and Eh on Aldabra atoll. I. Comparison of marine and freshwater environments pH and Eh on Aldabra Atoll. 2. Intertidal photosynthetic microbial communities showing zonation Contribution ~ la connaissance des Rotif~res et des Cladoc~res de la r~gion Parisienne Sur la nutrition des Rotif~res ~i partir des algues d'eau douce Influence de la nourriture sur l'apparition des femelles mictiques chez deux espfces et une varift6 de Brachionus Sur l'61evage des Rotif~res au Laboratoire Recherches sur la biologic du Rotiffre Eosphora najas EHRENBERG Notes taxonomiques sur quelques Rotiffres planctoniques Workshop on culture techniques of rotifers Hatching of Brachionus rubens O.F. Miiller resting eggs (Rotifers) Predatory behaviour of Lutzia on Culex fatigans Two New Taxa of Spirogyra Some Interesting Morphological Features in Tolypothrix spp Zur Physiologie der Mineral-und Thermalwasservegetation An Inexpensive Bioassay Aimed at the Agricultural Disposal of Waste Waters 13ber den Einfluss der Herbizide auf einige S~isswassertiere Field experiments on the optical orientation of pelagic rotifers Objectionable olgae with reference to the killing offish and other animals The Fresh-Water Algae of Montana, I, New Species of Chaetophoraceae A new Species of Anabaenopsis in a Kansas Lake with Notes on Limnology New or Otherwise Interesting Fresh-water Algae from North America On the nuclear cytology of Hydrodictyon Decomposition of emergent macrophytes in a Wisconsin marsh The growth of the freshwater murrel Primary Production of a Brook Trout Populations in Colorado Beaver Ponds Ordination of deep river invertebrate communities in relation to environmental variables Two New Gammaridean Amphipods (Crustacea) From the Gulf of Mannar Haustoriid Amphipods (Crustacea) from India Marine Gammaridea (Crustacea: Amphipoda) from the Indian Region -Family: Amphilochidae Marine Gammaridea (Crustacea: Amphipoda) from the Indian Region Description of a new species of Peniculisa including its immature stages The effect of some biotic and abiotic factors on the fertility of planktonic rotifer species The Hidden Flora of a Lake Susceptibility of different body-sized Bulinus truncatus to molluscididal action at two different temperatures The influence of thick floating vegetation (water hyacinth: Eichhornia crassipes) on the physico-chemical environment of a fresh water wetland Limnological Observation on the Different Rivers and Lakes in the Ivory Coast Classification of Central Amazon lakes on the basis of their microbiological and physico-chemical characteristics The Phragmites cornmunis Trin. Chromosome Complement in the Danube Delta Food utilization by Tilapia mossambica (Peters): Function of size Effect of Extreme Salinity Conditions on the Survival of Mytilopsis sallei RECLUZ (Pelecypoda) Antibacterial Activity Traceable to the Marine Blue Green Alga Trichodesrnium erythraeum in the Gastro-Intestinal Contents of Two Pelagic Fishes Infra Red Spectral Analysis of Antibacterial Substance Isolated from Trichodesmium Erythraeum (Marine Blue Green Alga) A partial analysis of ecological segregation in the chironomid community of a bog lake Significance of a new chromosome number in Nitella mirabilis Nordst. ex. Groves em Some Observations on the Morphology and Cytology of Indian Charophyta The Effect of Environmental Factors on Circulation and Respiration in Teleost Fish A new Naccaria from the West Indies Tornaria from Madras (Enteropneusta) Distribution of bacteria and chlorophyll a at a nearshore station in lake Ontario An Ecological Study of Three Freshwater Ponds of Hyderabad -India. I. The Environment An Ecological Study of Three Fresh Water Ponds of Hyderabad -India. II. The Environment An Ecological Study of Three Freshwater Ponds of Hyderabad -India. III. The Phytoplankton (Volvocales, Chlorococcales and Desmids) An ecological study of three freshwater ponds of Hyderabad -India. IV. The phytoplankton (Diatoms, Eugleninae and Myxophyceae) The effect of zooplankton on phytoplankton productivity in the epilimnion of a subalpine lake Did vertical migration by males, females, copepodids and nauplii in a limnetic population of Diaptomus (Copepoda) Benthic animals and foods eaten by Brook trout in Archuleta Creek Decomposition of Acer rubrum leaves at three depths in a eutrophic Ohio lake Community development in freshwater microcosms Catalytic mobilization of phosphate in lake water and by Cyanophyta Dissolved Phosphorus Concentrations in a Natural Salt-Marsh of Delaware The effects of northern Italian rivers and eastern mediterranean ingressions on the phytoplankton of the Adriatic Sea Microplankton diversity indices as indicators of eutrophication in the Northern Adriatic Sea Seasonal variations in the vertical distribution and buoyancy of Microcystis aeruginosa Kfitz. emend. Elenkin in Rostherne mere Biology of the Small Pelagic Fishes in the New Volta Lake in Ghana, Part I: The Lake and the Fish: Feeding Habits Biology of the Small Pelagic Fishes in the New Volta Lake in Ghana, Part III: Sex and Reproduction Skeleton weight allometry in aquatic and terrestrial vertebrates The final thermal preferendum of fishes: shuttling behavior and acclimation overshoot Habitat selection and territorial defence behaviors in juvenile Cortez angelfish, Pomacanthus zonipectus (Gill) Effect of temperature on the growth rate of Gri~ithsia tenuis C Estimation of cardiac output and stroke volume from thermal equilibration and heartbeat rates in fish Complementarity of thermoregulatory rhythms in Micropterus salmoides and M. dolomieui Behavioral thermoregulation by ammocoete larvae of the sea lamprey (Petromyzon marinus) in an electronic shuttlebox Thermoregulatory behavior of brown trout, Salmo trutta Effect of temperature on locomotor activity in the goldfish ( Carassius auratus) and the bluegill ( Lepomis macrochirus): Presence of an 'activity well' in the region of the final preferendum Bahavorial thermoregulation in the spiny lobster Panulirus argus (Latreille) Diel activity of the pink shrimp Penaeus duorarum Thermoregulatory behavior of the pink shrimp Penaeus duorarum Burkenroad Thermoregulatory behavior of juvenile Cromileptes altivelis (Serranidae), a tropical marine fish Zoogeography and the predatorprey 'arms race': a comparison of Eriphia and Nerita species from three faunal regions Observations on the Comparative Ecology of Lake-dwelling Triclads in Southern Sweden Cellulose production by planktonic algae in lacustrine environments Experimental observations on maternal reproductive rate and offspring characteristics H6mipt6res H6t6ropt6res aquatiques des environs de Tananarive Recherches sur les Rotif6res des eaux saumfitres. III. Quelques Rotif6res de la Camargue Studies on Brackish-water Rotifers. V. Some Rotifers from Weymouth Harbour (British Channel) Recherches sur les rotif6res des eaux saum~tres. VIII. Quelques rotif6res des Marismas espagnoles Rotifers from Nicaragua Recherches sur ies rotif6res des eaux saumfitres de la Lorraine orientale Some Remarks on the Fecundity of Tilapia (T. mossamica Peters) and its Introduction into Middle Central America (Nicaragua) together with a first Contribution towards the Limnology of Nicaragua La biod6gradation des acides fulviques Evidence for a diurnal variation in the carotenoid content of Acanthodiaptomus denticornis (Crustacea, Copepoda) in Lac Pavin Standing crops of chironomidae in two desert reservoirs, central Arizona Cluster Analysis of Occurrence and Distribution of Insect Species in a Portion of the Potomac River Vertical diffusion and nutrient transport in a tropical lake (lake McIlwaine, Rhodesia) Some factors influencing the microdistribution of a population of spined loach, Cobitis taenia (L.) A comparison of ventilation rates and haemoglobin concentrations between two species of Loach, Noemacheilus barbatulus (L.) and Cobitis taenia (L.) Relationships between phytoplankton and periphyton communities in a central Iowa stream Seasonal attenuation of quantum irradiance (400-700 nm) in three Nebraska reservoirs The morphology of burrow structures made by tubificids Two-stage cycle of a Cordylophora population in the Netherlands Epiphytic protozoans in reed rootlets from dutch waters Accumulation of Dieldrin by Benthic Algae in Laboratory Streams Effects of environmental calcium deprivation on the egg masses of Physa marmorata Guilding (Gastropoda: Physidae) and Biomphalaria glabrata Say (Gastropoda: Planorbidae) Observations on the diatom flora of Braunton Burrows Growth of Tilapia mossambica Peters in Some Trahsvaal Impoundments Studies on the gut contents of Leptestheriella maduraiensis (Conchostraca: Branchiopoda) Nayar and Nair Sur Monodella stygicola Ruffo des eaux souterraines de 1' Italie m6ridionale, deuxi6me esp6ce connue de 1' ordre des Thermosbenac6s (Malacostraca Peracarida) Water quality, substrate, and distribution of macroinvertebrates in the Patuxent river Some ecological observations on a permanent pond in southern England: primary production and planktonic seasonal succession Zum Formwechselund Artenproblem von Anuraea aculeata The abundance of distribution of Filinia terminalis in various types of lakes as related to temperature, oxygen, and food Zu methodischen Prinzipien des Studiums vom Algenpopulationen in vitro Observations on Tropical Rainpools and General Remarks on Temporary Waters Some Limnological Characteristics of the Nozha Hydrodrome Calcareous Deposits of the Brackish-Water Lakes in Egypt Larval Overwintering Cocoons in Endochironomus tendens Fabricius Contribution to the Ecology of Indian Aquatics. I. Seasonal Changes in Biomass of Water Hyacinth Eichhornia crassipes The Overall Changes in Abundance of Ciliates Other than Family Tintinnidae in St. Margaret's Bay Diurnal Variation in Sagar Lake, Sagar (India). I. Studies In The Deep Water Area Physicochemical conditions and benthic macroinvertebrates of a tertiary sewage treatment system Some new diatoms from Blakeney Point (Norfolk) Notes on New Planktonic Diatoms from Egypt A multiple filtration device for glass fibre filters Comparison of different glass fibre and silver metal filters for the determination of particulate organic carbon The effect of different preservation methods on the carbon content of Megacyclops gigas Effects of density on food utilization and surfacing behaviour in the obligatory air-breathing fish Channa striatus Limnological Investigations in the Area Anvers Island Correlations of phytoplankton standing crop, species • diversity and dominance with physical-chemical data in a coastal salt pond Selective feeding by balthic herring Some Observations on the Division of five Species of Commensalic Ciliates in Relation to Water Propulsion The Reproductive Cycle in a Typical Estuarine Mollusc Nausitora hedleyi SCHEPMAN based on a study of the Gonad Index The Influence of Salinity on a Tropical Estuarine Shipworm Nausitora hedleyi SCHEPMAN (Bivalvia-Teredinidae) Akinete Formation and Karyology of Cylindrocapsa involuta Reinsch On a New Cytological Race of Schizomeris leibleinii Kl~TZ On two new Charophytes from India A parthenogenetic life cycle in a population of Canthocamptus staphylinus (Copepoda Harpacticoida) Distribution of ureadecomposing bacteria in waters of Lake Suwa Etude hydrobiologique des lagunes du nord de la Tunisie Etude hydrobiologique des iagunes de la Tunisie The Phylogenetic Development of Brooding Behaviour in the Hirudinea A New Species of'Tentacled' Marine Fish Leech Parasitic on Notothenia from the Subantarctic Marion and Crozet Islands Notes on two marine leeches (Annelida: Hirudinea) from subantarctic Marion Island including a new record Myxosarcina cloacarum sp. nov. and its Life History Effect of mercuric chloride on the phosphatases in the accessory respiratory organs of Clarias batrachus Notes on the Hydrobiology of Azraq Oasis Jordan Ueber Meeres-und Brackwasser-Ostracoden aus dem deutschen Kfistengebiet Der Einfluss von Membranfiltration oder Autoklavieren auf die Ernte von Raphidonema spiculiforme Vischer Hg2 + -Ionen auf die Filtrationsrate von Pisidium casertanum POLI (Bivalvia) Verteilung und Systematik der freilebenden Nematoden des Neusiedlersees Mass culture experiments with Brachionus rubens Interacting effects of light, temperature, and nutrients on C-14 uptake of Oscillatoria rubescens De Candolle Dfingeversuche an der Riveristalsperre Pal/iolimnologische Studien an Testaceen aus Bohrkernen des Latnjajaure Studien fiber die Testaceenbesiedlung der Seen und T/impel des Abisko-Gebietes (Schwedisch-Lappland) The ecology and electrophoretic analysis of the damselfly, Argia vivida Hagen, living in a geothermal gradient Some factors controlling the major ion chemistry of small lakes: examples from the prairie parkland of Canada Hydrologic Aspects of Limnology in South Africa A comparative analysis of the relationship between phytoplankton standing crops and environmental parameters in four eutrophic prairie reservoirs Zur Crustaceenfauna der Brackwassergebiete Rfigens und des Darss. (Acartia tonsa, Caligus lacustris, Mierodeutopus gryllotalpa) Die Tintinnoinea The algal flora of south-eastern United States. VI. Additions to our knowledge of the desmid genus Euastrum Some Notes on the Trichoptera of Standing Waters in Africa Laboratory studies of factors affecting egg hatch of Triops Iongicaudatus (Leconte) (Notostraca: Triopsidae) Ecological Studies in the Plankton of Certain Freshwater Ponds of Hyderabad -India. I. Physico-chemical Complexes Ecological Studies in the Plankton of Certain Freshwater Ponds of Hyderabad -India Ecological Studies in the Plankton of Certain Freshwater Ponds of Hyderabad -India. II. Phytoplankton -2. 39 Ecological studies in the plankton of certain freshwater ponds of Hyderabad -India. III. Zooplankton and bacteria Riesenwuchs aufverrotteten Halmen yon Scirpus laeustris L Survival and metabolism of the harpacticoid copepod Thompsonula hyaenae (Thompson) fed on different diatoms The utilization of dissolved organic compounds in aquatic environments Accidents cardiaques et variations brusques de salinit6 chez les Poissons Tflfostfens marins Le facteur pression et les rfactions cardiaques chez les poissons tflfostfens d' eau douce Les rfactions cardiaques chez la carpe (Cyprinus carpio) au cours d' une anesthfsie prolongfe Influence de 1' abaissement de tempfrature sur la valeur de la frfquence respiratoire et du taux lymphocytaire du milieu sanguin chez la Carpe commune Le r~flexe afrocardiaque chez la carpe commune (Cyprinus carpio L.) et le phfnom~ne d' 6chappement Influence des variations du facteur thermique sur 1' intensit6 du rfflexe afro-cardiaque chez la Carpe commune Metalimnic Layer in Lake Lowering of water level and algal biomass in lake Kinneret A new species of Clupeid fish, Ilisha sirishai from Visakhapatnam Description of a neotype for Platygaster maerophthalma Swainson, 1838 (= llisha megaloptera) Studies on Moisture Relationships of Some Aquatic and Terrestrial Algae Action de pesticides chez des insectes en fonction de leur 6tat physiologique: &ude de 2 insecticides et d' un mrlange d' herbicides chez les larves aquatiques de Cloeon (Ephrmrroptrres) Etude de la toxicit6 chronique de deux insecticides la grnrration F1 de Lymnea stagnalis L. (Mollusque Gastrropode pulmonr). II. Consrquences sur le potentiel reproducteur The Ingestion and Digestion of Algae by Chloeon dipterum L. (Ephemeroptera) Effects of different feeding levels on moulting, growth and conversion efficiency of Palaemon lamarrei Influence of body weight/age on the food intake, growth and conversion efficiency of Gambusia affinis Untersuchungen fiber die Wirkung des hydrostatischen Druckes auf das Wachstum von Delesseria sanguinea (L.) Lamour. aus der westlichen Ostsee Life Cycle of a Chydorid Cladoceran Pleuroxus denticulatus BIRGE Contributions to the rotifer fauna of West Bengal Contributions to the rotifer fauna of West Bengal. II. Genus Lepadella Bory de St Two new lecanid rotifers from India Rotifers from West Bengal. III. Further studies on the Eurotatoria Rotifers from West Bengal Further contributions to the Eurotatoria Contributions to the rotifer fauna of Orissa Taxonomic notes on some freshwater Gastrotricha from West Bengal Synopsis of taxonomic studies on Indian rotatoria Influence of Phenol and Temperature on the Respiration of a Freshwater Snail, Helisoma trivolvis Some aspects of the ecology of Melosira spp. in Ontario lakes Size Relationships of Acroneuria californica (Perlidae, Plecoptera) and its Prey Coexistence ofperlid stoneflies (Plecoptera): predictions from multivariate morphometrics Resource division by perlid stoneflies (Plecoptera) in a lake outlet ecosystem Microbiological studies of a 'virgin' salt-fresh water transect at North Point, James Bay II. Mycological aspects Trace metals with seasonal considerations in coastal algae and molluscs from Beirut Certain metals in three coastal algae from Ras Beirut waters Seasonal and annual variations in bioloical regime of lakes in an ultracontinental climate (Trans-Baikal Region of USSR) Life cycle and production of Skwala parallela (Frison) (Plecoptera: Perlodidae) in a Colorado montane stream Behaviour of catalase in some members of Chlorophyceae and Cyanophyceae Studies on northindian Volvocales. III. Fertilization in Eudorina californica Observations on the morphology, reproduction and cytology of Stigeoclonium pascheri (Vischer) Cox et Bold (Chaetophorales -Chlorophyceaea) and their bearing on the validity of the genus Caespitella Vischer Evaluation of two tagging/marking techniques and their practical application in Osteochilus hasselti C. & V. (Cyprinidae) population estimates and movement at Subang reservoir Changes in fish species composition in lake Naivasha Diel oxygen uptake in Chaoborus punctipennis (Diptera: Culicidae) Generic names of algae proposed for conservation Saprobitfitsbestimmung nach den Larven und Puppen von Trichoptera An Ecological Evaluation of Heated Water Discharge on Phytoplankton Blooms in the Potomac River Phytoplankton distributions observed during a 3 days fixed-station in the lower St Lawrence estuary Artificial culture of Narasimhania alismatis Teliospore development of Narasimhania alismatis in artificial culture Some ecological observations on two agarophytes from India Seasonal Variants of Anabaenopsis raciborskii Wolosz Cytological Observations on the Material of Boergesenia forbesii (HARV.) FELDMANN from the South and West Coast of India A New Species of Myzocytium from India A New Species of Cladochytrium from India Preliminary Studies on Algal Succession in Raw and Stabilized Sewage Some changes in biochemical composition with sex and size of the crab, Sesarma boulengeri Calman Hydration of female spawners of carps during hypophysation Studies on the ecology of a frshwater pond community Community Metabolism in a Tropical Freshwater Pond Locomotor activity of river lamprey Lampetrafluviatilis (L.) during the spawning season The List of New Genera and Type Species of Flagellates and Algae The List of New Genera and Type Species of Flagellates and Algae The List of New Genera and Type Species of Flagellates and Algae, Publ. 1967, Part III A List of New Genera and Type Species of Flagellates and Algae Published in 1966-1968 Part IV A List of New Genera and Type Species of Flagellates and Algae A List of New Genera and Type Species of Flagellates and Algae Published in 1969 A quantitative plankton net for horizontal sampling Some new Cyclopids from the Balkan Lake A Note on the Occurrence of Hexarthrafennica LEVANDER in Czechoslovakian Oligohaline Waters Contribution to the Knowledge of the Rotifer Ascomorpha minima Hofsten The future of the saprobity system The Ecological and Physiological Trends in the Saprobiology Bacterial periphyton of the Vltava river Saprobic sequence within the genus Euglena Determination of the Periphyton Production by Means of the Glass Slide Method Der Aufwuchs auf den Kfihitiirmen der Dampfkraftwerke und einige einfache Abhilfemassnahmen The Most Common Fungi in Biological Treatment Plants Filamentous Organisms in Activated Sludge Zoogeographical Review of the Black Sea Fish Fauna Seasonal diversity in aquatic insect communities in an all-year stream system Annual changes of nitrogen and phosphorus in two aquatic macrophytes (Nymphaea tuberosa and Ceratophyllum demersum) The influence of water aeration by the Phallus process on the macrobenthic fauna (preliminary report) The Influence of Light and Air on the Purification of Polluted Water A Hydrobiological Study of the Polluted River Lieve Mass Consumer of Water-Lily Food Cycles in Sphagnous Bogs On Nutrition of Caddis Worms Phryganea grandis L Eurycercus lamellatus (O.F Chydoridae, Cladocera): Field Observations and Nutrition On Inshore Cladocera of the Volga Water Reservoirs On the Seasonal Distribution of Inshore Cladocera of the Volga Water Reservoirs Pleuroxus (Chydoridae): Field Observations and Growth On the Quantity of Allochthonous Pollen and Spores Received by the Rybinsk Reservoir AIonopsis (Chydoridae, Cladocera): Morphology and taxonomic position The taxonomic significance of the trunk limbs of the Chydoridae (Cladocera) Pleuroxus (Chydoridae): Morphology and Taxonomy On Age Morphological Changes of Males of Chydoridae (Cladocera) Alonella and Dunhevedia (Chydoridae, Cladocera): Morphology of Trunk Limbs Morpho-Functional Grounds of Mode of Life of Cladocera. III. Oligomerization in Cladocera Morpho-functional Grounds of Mode of Life of Cladocera. V. Morphology and Adaptive Modifications of Trunk Limbs of Anomopoda Detailed Morphology of Trunk Limbs of some Aloninae Pathology of Carp Blood Infested by Haemogregarina Distribution and Seasonal Abundance of Entomostraca in Moorland Ponds near Windermere Population dynamics of Daphni hyalina Leydig (Crustacea: Cladocera) in a productive and an unproductive lake in the English Lake District Food and feeding of aquatic larvae of the midge Chaoborusflavicans (Meigen) (Diptera: Chaoboridae) in the laboratory Massive cultivation of microalgae: results and prospects Physico-chemical environment, phytoplankton biomass and production in oligotrophic Primary Organic Production in the Atlantic Ocean Sulphide Formation and Chemical Composition of Bottom Sediments of Some Italian Lakes On the Carbon and Sulphur Metabolism in the Meromictic Lake Faro (Sicily) Analysis of heterotrophic microplankton in an upwelling area On characteristics of the Peruvian upwelling ecosystem On the Quantitative Characteristics of the Pelagic Ecosystem of Dalnee Lake (Kamchatka) On structure and functioning of ecosystem in a salmon lake Quelques nouvelles donn6es sur le phytoplancton matin et la production primaire Tulear (Madagascar) Contributions to the Comparative Physiology and Genetics of the European Salmonidae. I. Method for the Determination of the Oxygen Consumption in Ova, Alevins and Fishes of Different Sizes Contribution fi la biologie de quelques Cichlides. III. Ph6nom6nes 6nerg6tiques en fonction de la temp6rature Contribution to the Comparative Physiology and Genetics of the European Salmonidae. III. Temperature Resistance at Different Ages Contributions to the Comparative Physiology and Genetics of the European Salmonidae The Response of Bluegil~ Sunfish (Lepomis macrochirus RAFINESQUE) to Seismic Shock Monitoring Zinc Concentrations in Water using the Respiratory Response of Bluegills (Lepomis macrochirus Rafinesque) The effect of the method of supplementary feed application on the feeding habits of carp (Cyprinus carpio L.) with regard to natural food in ponds Nonmetric multidimensional scaling analyses of temporal variation in the structure of limnetic zooplankton communities Algal response to a thermal effluent: study of a power station on the Provo river Diatom Flora of the Grand River A Hydrological Study of a Tropical Impoundment Limnology of Tropical Impoundments, III. Limnology and Productivity of Amaravathy Reservoir (Madras State) The Limnology of and Fish Production in Two Ponds in Chinglepat (Madras) Limnology of Tropical Impoundments: a Comparative Study of the Major Reservoirs in Madras State (India) Limnological studies of and primary production in temple pond ecosystems Some Species of Saprolegniaceae Collected from Gorakhpur, India Ecological Studies on Some Aquatic Fungi of Gorakhpur, India Bacteriostatic Effects of Some Algae and Lemna minor Extracts Aspects of the feeding behavior and trophic ecology of suspensionfeeding rotifers Detrital feeding in natural zooplankton communities: discrimination between live and dead algal foods A Contribution to the Biology of Nitella hookeri A.BR. in the Rotorua Lakes A Contribution to the Biology of C~[itella hookeri A.BR. in the Rotorua Lakes, New Zealand. II. Organic nutrients and physical factors Reproduction by Zoospores in Planktosphaeria gelatinosa G The production of organic matter by the phytoplankton in a Danish lake receiving extraordinarily great amounts of nutrient salts Sue Monodella argentarii STELLA, esp6ce de Crustac6 Thermosbenac6 des eaux d' une grotte de 1' Italie centrale. 5 Rhizopoden aus alten, ausgetrockneten Moosproben Testacea des Benthos der Talsperre Vranov am Thayafluss Water Transmittance in Czechoslovak Reservoirs and Ponds A Note to Explanation of Reservoir Water Taste and Odour Diffiugia gramen Penard, Difflugia gramen var. achlora Penard and Diffiugia gramen f. globulosa f.n. (Morphometrical and Statistical Study) Microcystis toxica n. sp. a poisonous alga from the Transvaal and Orange Free State Seasonal Variations in Concentrations of Nitrate and Total Phosphorus, and Calculated Nutrient Loading for Six Lakes in Mineral composition of Halimione portulacoides (L.) Aellen leaves Epizoische Peritrichen aus dem Population responses of Lake Michigan phytoplankton to nitrogen and phosphorus enrichment Preliminary observations of the aquatic insects of the Smoky Mountains altitudinal zonatlon in the spring Seasonal fluctuations of macroinvertebrate drift in a South Carolina Piedmont stream Plankton communities of an acidic, polymictic, brownwater lake Contributions to the Productivity of the Littoral Region of Pools and Ponds Quantitative Study of the Littoral Zooplankton of the Rich Vegetation of the Backwater Labicko Taxonomical studies on Czechoslovak Conchostraca. III. Family Leptestheridae Effets du rubidium et du c6sium sur la croissance min6rale des charac6es A note on the nutrition of Stylaria lacustris (Oligochaeta: Naididae) Observations on adults and eggs of Chaoborusflavicans (Diptera: Chaoboridae) Change in a glacier-fed lake Finsevatn after 21 years Comparative Studies on Metabolic Activity of Planktonic, Benthic and Epiphytic Bacteria A case of thermal pollution limited primary productivity in a south-western U Algae and Testacea of the Cho Oyu (Himalayas) expedition-II Effects of Environmental Perturbations on Short-Term Phytoplankton Production off Lawson's Bay, A Tropical Coastal Embayment Structure and reproduction of Hormidiella bharatiansis sp New Systematical Approach to the Japanese Planktonic Rotatoria Time dependent cadmium uptake by fathead minnows (Pimephales promelas) during field and laboratory exposure Edaphic diatom communities associated with Spartina alterniflora and S. patens in New Jersey Structural characteristics of a diatom community epiphytic on Ruppia maritima Algae and Testacea from high altitudes of Himalayas-I (collected by N.C.C. Punch Chulli expedition Desmids of Andhra Pradesh, I from Pakhal Lake Algae of the Cho Oyu (E. Himalaya) Expedition I Koagulation des Algen bei der Wasseraufbereitung Seasonality and fecundity of Daphnia lumholtzi SARS in Lake Phewa Cladocera from Pokhara valley, Nepal with notes on distribution Some studies on the ecology of limnetic crustacean zooplankton in Lakes Begnas and Rupa Activity Cycles in the Brown Trout (Salmo trutta LIN.). I. Fish Feeding Naturally A Re-Assessment of the Relative Importance of Ciliates, Rhizopods and Rotatorians in the Ecology of Activated Sludge Copulation observed in Viviparusfasciatus Some Peculiarities Concerning the Contraction of the Gametes in Spirogyra maxima (Hass. Wittrock) Study of the Ecological Relations Between 30 Species of Algae by Means of a Factor Analysis On the changes in the structure of two algal populations: species diversity and stability Study of the changes in the structure of two algal populations: an r-type factor analysis Uber die Hydracarinen der unterirdischen l~lber die Wassermilben (Hydrachnellae) der Hohen Tatra Microzooplankton and seston in Akkeshi Bay Sur le cycle biologique de Sphaeroma hookeri LEACH (Isopode flabillif6re) dans les eaux de la Duranqole The Longitudinal Succession of Water Characteristics in the White Nile Proximate Composition of Freshwater Fish-Grass Carp, Puntius gonionotus and Tilapia Preliminary Studies on the Composition of Major Ions of Some Fish Ponds of Malacca in Malaysia The Zooplankton of Fresh and Brackish Waters of the Cape Thompson Area A new Chrysophycean Flagellate: Sphaerobryonfimbriata gen. et sp. nov Structure and Taxonomic Status of Trichogloea herveyi Structure and Reproduction of Chrysophaeum lewisii Notes on Three Bermudian Marine Algae Notes on Indo-Pacific Turbinarias Population dynamics of Daphnia pulex and utilization by the rainbow trout (Salmo gairdneri) Studies in Aquatic Fungi of Varanasi Studies in the Life Cycle of Atlomycesjavanicus KNIEP A Preliminary Study on the Plankton of the Ponggol Estuary Notes on the Abundance of the Diatom Hemidiscus hardmannianus the Singapore Straits An Ecological Study of the Ponggol Estuary in Singapore Sargassum johnstonii SETCHELL & GARDNER, a New Record for the Indian Ocean Region Thermisch bedingte Horizontalzirkulationen, Wasserchemismus und AIgenwucherungen an Ziirichseeufern Thermal Algae of Western India. I. Algae of the hot springs at Akoli and Ganeshpuri. II. Algae of the hot springs at Palli Thermal Algae of Western India. III. Algae of the Hot Springs at Sav Thermal Algae of Western India. IV. Algae of the Hot Springs at Aravali, Tooral, and Rajewadi Thermal Algae of Western India. V. Algae of the Hot Springs at Tuwa Thermal Algae of Western India. VI. Algae of the Hot Springs at Unou, Lasundra and Unapdeo Thermal Algae of Western India. VII. Algae of the Hot Spring at Rajapur Le genre Plagiopyxis PENARD Zur Planktonkunde Spitzbergens. 2 The Effects of pH, Phenol and Sodium Chloride on Survival and Caloric, Lipid, and Nitrogen Content of a Laboratory Population of Chironomus attenuatus (WALK) Growth and Life-cycle of Invertebrates from Danish Springs Comparative Species Composition of Limnetic Planktonic Crustacean Communities Water Renewal in Reservoirs, and its Relation to Body Size and Egg Numbers in Copepods A Study of the Blue-Green Algae from Paddy Field Soils of India On the Morphology and Lifehistory of a New Species of Chroococcidiopsis GEITLER (Chroococcales) On a new species of Hapalosiphon NAEGELI (Myxophyceae) The Kinetics of NH4 Uptake by Ceratophyllum Diel periodicity in uptake of nitrate and nitrite by reservoir phytoplankton Effects of lake mixing with an axial flow pump on water chemistry and phytoplankton Biological and water quality effects of artificial mixing of Arbuckle lake, Oklahoma, during 1977 Humid acid influence on the growth and copper tolerance of Chlorella sp The effect of mercury on the growth rate of Fragilaria erotonensis Kitton and Asterionellaformosa Hass Effect of temperature on the oxygen consumption in the larvae of Dineutes indicus Aube (Gyrinidae, Coleoptera) Some ecological observations on floating islands Feeding habits of the predaceous nymphs of Dolania americana in northwestern Florida (Ephemeroptera: Behningiidae) Comparison of clay tile, sterilized rock, and natural substrate diatom communities in a small stream in southeastern Michigan Studies on Unionidae populations from the Crapina-Jijila complex of pools (Danube zone liable to inundation) Structure, dynamics and production of the benthic fauna in lake Manitoba Un dispositif simple pour l'observation durable in vivo des microorganismes R6vision du genre Euplotes, fond6e sur la comparaison des structures superficielles A simple and cheap hydrometric wing Zoological evidence to the origin of flood-waters and their role in vector distribution A New Suctorian Parasitic to a Japanese Bathynellid Zooplankton of Lake Titicaca on the Bolivian Side Beitr/ige zur Kenntnis der {)bersicht fiber das Potamophytoplankton der Tisza (Theiss) in Ungarn Beitrfige zur Kenntnis der Algenvegetation der Natron-bzw. Soda-(Szik-) GewS.sser Ungarns. II. {)ber die Algen des Teiches Oszesz6k Limnology and performance of waste treatment lagoons Liagora visakhapatnamensis, a New Species From India An Ecological Study of the Macrophytic Vegetation of the Doodhadhari Lake, Raipur, M.P., India. I. Distribution and seasonal change in aquatic plants An Ecological Study of the Macrophytic Vegetation of the Doodhadhari Lake, Raipur, M.P., India. 2. Physical Factors An Ecological Study of the Macrophytic Vegetation of Doodhadhari Lake, Raipur, M.P. 3. Chemical factors Production of submerged aquatic plant communities of Doodhadhari Lake Raipur The distribution and production of macrophytes in Lunz Mittersee and Lunz Untersee On the Ecology of some small lakes near Buitenzorg Studies on the Production and Utilization of Natural Food in Indonesian Carp Ponds Habitat and distribution of Perforatella rubiginosa (Gastropoda, Pulmonata) in the freshwater tidal region of the Scheldt estuary Study of some environmental factors affecting the occurrence of Charophytes in Western India Substratum as a factor in the distribution of two prosobranch freshwater snails, Viviparus bengalensis and Melania scabra Laboratory studies on the direct effect of temperature on the freshwater vector snail, Indoplanorbis exustus (Deshyes) Influence of salt concentrations on survival, body weight and blood chloride of the freshwater snail Observations on the hatching process and salt and water regulation in the embryos of the freshwater snail lndoplanorbis exustus Calcium regulation in the freshwater snail Indoplanorbis exustus during shell repair Responses of the neurosecretory cells of the freshwater snail, Indoplanorbis exustus to hydrothermal stress Hemerodromia seguyi, nouvel empedide d'Alg6rie destructeur de simulies Two species of Phreodrilidae (Oligochaeta) new to Australia and Tasmania Nitrogen fixation in Lake Mendota Thermocyclops ouadanei n. sp. (Crustacea: Copepoda) from Mauretania Comparative evaluation of water quality on the St On the trophic status and conservation of Kashmir lakes The closure of the Grevelingen estuary: its influence on phytoplankton primary production and nutrient content Laboratory measurement of preferred body temperature of adult largemouth bass (Micropterus salmoides) Effect of Sex and Size on the Protein Composition in the Tissues of the Freshwater Crab, Paratelphusa (Banytelphusa) guerini Milne Edwards Observations on the Sex Characters of the Timber-Boring Sphaeromids (Isopoda) of the Indian Waters Effect of temperature on the development, growth and egg production in Daphnia carinata King (Cladocera-Daphnidae) Nitrogenous compounds of the body fluids of usual and unusual gastropod hosts of larval trematodes Gobioid Fauna of Veller Estuary Hydrobiological Studies on the River Sabarmati to Evaluate Water Quality An Ecological Study of the Algae of the River Moosi, Hyderabad (Iridia) with Special Reference to Water Pollution I. Physicochemical complexes An Ecological Study of the Algae of the river Moosi, Hyderabad (India) with Special Reference to Water Pollution. II. Factors Influencing the Distribution of Algae An Ecological Study of the Algae of the River Moosi (India) with Special Reference to Water Pollution. III. The Algal Periodicity An Ecological Study of the Algae of the River Moosi, Hyderabad (India) with Special Reference to Water Pollution. IV. Periodicity of some common species of algae A New Ephemeropteran Record in South Africa Diurnal Variation in a Fish Pond in Seoni, India Hydrobiological Study of a Tropical Impoundment Evaluation of some enzymatic methods to measure the bio-activity of aquatic environments Die aus Afrika bekannten Wassermilben (HydrachneUae, Acari) Unser Zuwachs an Kenntnissen fiber die aus Afrika bekannten Wassermilben (Hydrachnellae, Acari) Hyperthermal effluent effects on heleoplanktonic Cladocera and the influence of submerged macrophytes The effect of food quantity and quality on the growth, birth-rate and longevity of Daphnia hyalina Leydig Hydrobiology of Lake Volta, Ghana, I. Stratification and Circulation of Water Relationships of nitrogen and phosphorus to a tropical phytoplankton population Biological consequences of stream routing through a final-cut strip mine pit: benthic macroinvertebrates Effects of the pO2 on swimming activity and food utilization in Ophiocephalus striatus Surfacing activity and food utilisation in the obligatory air-breathing fish Ophiocephalus striatus as a function of body weight Surfacing activity and food utilization in a tropical airbreathing fish exposed to different temperatures Survival, osmoregulatory ability, and respiration of Idotea chelipes (Crustacea, Isopoda) from Lake Veere in different salinities and temperatures A new monotypic genus of neotropical freshwater sponges (Porifera-Spongillidae) and evidence of a speciation via hybridism An evaluation of artificial substrates for sampling macrobenthos in reservoirs Thermal vegetation and oecological valence theory Studies on the Phytoplankton and other Algae of Indrasagar Tank 197 I. Seasonal Variation in Primary Productivity in Three Tropical Ponds Die h/iufigsten h/imoglobinfiihrenden Oligochaeten der mitteleurop/iischen Binnengew~isser A Note on Two Liquid Scintillation Fluors Useful for Primary Production Work Description of a new submersible filter-pump apparatus for sampling plankton Mise en 6vidence d'un rythme endog6ne annuel dans la r6activit6 de la carpe h u n apport adr6nalique The Larval Retreat and Feeding Net of Macronema carolina BANKS (Trichoptera: Hydropsychidae) Ecology of sessile rotifers Light penetration and the interrelationships between optical parameters in a turbid subtropical impoundment Active entry of stream benthic macroinvertebrates into the water column Growth and population structure of Salamandra salamandra (L.) larvae in different limnological conditions The Marine Nematode Eurystomina terricola (DE MAN 1907) and its distribution on British shores Agr6gation et migration verticale du zooplankton dans de petits 6tangs peu profonds D6veloppement, croissance et f6condit6 de Cladoc6res en fonction de la temp6rature et du niveau trophique. Elevage in situ dans deux 6tangs Die Waldviertler Fischteiche und ihre Entomostrakenfauna auf oekologischer Grundlage Winterschichtung 1965/66 in zw61f Waldviertler Fischteichen Vergleichende Braunwasser-Teichstudien im nieder6sterreichischen Waldviertel Ecology and Zoogeography of Aquatic Hemiptera from Temporary Pools in Central Africa Seasonal Variation in Alkalinity in Pans in Central Africa Studies on Central African Pans III. Fauna and Physico-chemical Environment of Some Ephemeral Pools Dominance of phosphorus over nitrogen as the limiter to phytoplankton growth rate Sublethal effects of heavy metal contaminated sediment on midge larvae (Chironomus tentans) Emergence of the midge Chironomus tentans when exposed to heavy metal contaminated sediment Avoidance response of midge larvae (Chironomus tentans) to sediments containing heavy metals Diatoms in plankton samples of the Willem Barendsz Some Aspects of the Biology of Lake Trawsfynydd; a Power Station Cooling Pond Communities of Algae in North Carolina Streams and their Seasonal Relations Notes on the Ecology of Some Species of Freshwater Algae Certain Organism-Substrate Relationships Affecting the Distribution of Uca minax (Crustacea: Decapoda) The Resistance of Tubificid Worms to Three Common Pollutants Studies on the bacterial flora of tubificid worms Floristic Changes in the Tiver Tees Untersuchungen fiber den Schlam und die Gasbildung in den Amsterdamer Grachten in den Jahren Plankton from the Noordzeekanaal The Influence of Light on Destruction of Fenol in Water Biological Purification in Riverwater under the Influence of Light Ecology of Yellowstone Thermal Effluent Systems: Intersects of blue-green Algae Effects of dilution on the benthos of an alkaline lake Subfossil chironomids as evidence of eutrophication in Ekoln Bay Untersuchungen fiber die algenbewohnende Mikrofauna mariner Hartb6den III. Zur Systematik der freilebenden Nematoden des Mittelmeeres Species composition, diversity, biomass and chlorophyll in Greasy Creek, Red Cock Creek and the Arkansas river Dissolved oxygen concentration and diversity of benthic macroinvertebrates in an artificially destratified lake Nutrient translocation from green algal symbionts to the freshwater sponge Ephydatiafluviatilis Invertebrate drift lost to the sea during low flow conditions in a small coastal stream in western Canada Notes on the Ecological Similarities of Asellus aquaticus (L.) and A. meridianus Rac. (Crust., Isopoda) Some Observations on the Location of Sites of Fungal Activity at Blelham Tarn A Study of the Aquatic Actinimycetes of Blelham Tarn The activity of Streptomyces phage-virus in fresh water Zooplankton species diversity in Lake St Prey selection by Chaoborus punctipennis under laboratory conditions Colonization of artificial substrates by stream insects: Influence of substrate size and diversity Wisconsin desmids. I. Aufwuchs and plankton communities of selected acid bogs and closed bogs Wisconsin desmids. III. Desmid community composition and distribution in relation to lake type and water chemistry Sedgwick-Rafter cell counts: a procedural analysis The distribution of Asellus aquaticus (L.) and Proasellus meridianus (RAC.) in the southwestern part of the Netherlands The development of a benthic ecosystem The ecology of the marine rove beetle, Bryothinusa spp An ecological survey of the heavy metal contamination of the edible clam Paphia sp. on the iron-ore tailings ofTolo harbour, Hongkong A preliminary survey of organic pollution of shellfish in Tolo harbour The Measurement of Primary Production and its Relation to Inorganic Phosphate Absorption in a Freshwater Lake Algal bioassays to determine toxicity of metal mixtures The determination of desirable and nuisance plant levels in streams An examination of the effects of nutrients on the water quality of shallow rivers A Check List of Tropical West African Algae (Fresh-and Brackish-Water) Freshwater Algae of Sierra Leone. I. New and Unusual Algae from the Sula Hills Additions to the Algal Flora of Newfoundland. Part I: New and Interesting Algae in the Avalon Peninsula and Central Newfoundland. Part 2: Consideration of the Taxonomy of Some Algae Found in the Newfoundland Collections The distribution of blackfly larvae (Diptera: Simuliidae) in Upper Teesdale streams A solvent partitioning procedure for the separation of chlorophylls from their degradation products and carotenoid pigments Ultrastructure and histochemistry of the rudimentary gut of male Asplanchna sieboldi (Rotifera) Respiration in Branehinella kugenumaensis (Crustacea-Anostraca) inhabiting tropical astatic ponds Standard, routine and active oxygen consumption of a freshwater shrimp The Status of Agardhiella tenera and Agardhiella baileyi (Rhodophyta Gigartinales) Blood parameters of two hill stream cobitids in relation to their habitat Plankton Rotatoria in Japanese Inland Waters Notes on the Ecology and Entomostracan Fauna of Temporary Rainpools in Israel A comparison of pump sampling systems for live zooplankton collection Micro-Habitat pH Differences from those of the Surrounding Water Life-cycles of some Invertebrate Taxa in a Small Pond together with Changes in their Numbers over a Period of Three Years Seasonal changes in the abundance of Microcrustacea in a small pond Seasonal and Diurnal Changes in the Water Temperature of a Temperate Pond (England) and a Tropical Pond (Kenya) An ecological study of Phaenocora unipunctata (Orsted) (Turbellaria: Rhabdocoela): predator-prey interrelationships A laboratory study of the food of three species of leeches occurring in British lakes A Laboratory Study of Predation on Lake Dwelling Triclads Nitrogen and Phosphorus in a Stretch of the Guadelupe River, Texas, with Five Mainstream Impoundments The Physicochemical Limnology of a Stretch of the Guadelupe River, Texas, with Five Mainstream Impoundments On the Ecology of Algae in Certain Fish Ponds of Hyderabad-India. I. Physicochemical Complexes On the Ecology of Algae in certain Fish Ponds of Hyderabad, India II. Distribution of Unicellular and Colonial Forms On the Ecology of Algae in Certain Fish Ponds of Hyderabad, India. III. The Periodicity Habits and relative population densities of some hydrophilids in California rice fields Die Eintagsfliegen (Ephemeroptera) in Forellenb/ichen der Beskiden The production of Ephemeroptera in running waters Contribution 5. l'6tude de raccumulation et de la toxicit6 de l'6tain et du plomb chez des crustac6s Gammarides Comparative limnology of nine lakes of Jammu and Kashmir Himalayas Ecology and Production of Salvinia natans Hoffim