Oak Street UNCLASSIFIED fNIVERSITY OF suu iHERN CALIFORNIA BULLETIN LOS ANGELES, CALIFORNIA Volume IX JANUARY, 1915 Number 6 THE VENICE MARINE BIOLOGICAL STATION . . I OF THE UNFVFttSITY OF ILLINOIS „ F£B1b15 UNIVERSITY OF SOUTHERN CALIFORNIA BULLETIN LOS ANGELES, CALIFORNIA Volume IX JANUARY, 1915 Number 6 THE VENICE MARINE BIOLOGICAL STATION Published Bi-Monthly by the University Entered as Second Class Matter under Act of Congress, July 16, 1894 Los Angeles, California THE UNIVERSITY COLLEGE OF LIBERAL ARTS— Thirty-fifth Street and University Avenue. COLLEGE OF PHYSICIANS AND SURGEONS— 516 East Washington Street. COLLEGE OF DENTISTRY— Sixteenth and Los Angeles Streets. COLLEGE OF LAW— Tajo Building, First Street and Broadway. COLLEGE OF THEOLOGY— Thirty-fifth Place and Hoover Street. COLLEGE OF PHARMACY— Thirty-fifth Street and University Avenue. COLLEGE OF MUSIC- 233 South Broadway. COLLEGE OF ORATORY— Thirty-fifth Street and University Avenue. COLLEGE OF FINE ARTS— 201 North Avenue 66. THE MARINE BIOLOGICAL STATION— Venice, California. SUMMER SESSION The Summer Session of the College of Liberal Arts and the Venice Marine Biological Station will be held June 28th to August 9th, 1915. The Liberal Arts courses will be given at the University, the Marine Station courses at Venice. Special announcements of the courses may be obtained from the Registrar of the University. OFFICIAL STAFF VENICE MARINE BIOLOGICAL STATION ALBERT B. ULREY, A. M., Director . SAMUEL RITTENHOUSE, PH. D., Associate Director . ADVISORY COUNCIL GEORGE F. BOVARD, A. M., D. D., LL. D. President of the University EZRA A. HEALY, A. M., D. D. President of the Board of Trustees of the University ABBOTT KINNEY President of the Abbot Kinney Company , Venice , California GENERAL M. H. SHERMAN Capitalist ARTHUR B. BENTON President of the Southern California Academy of Sciences GEORGE I. COCHRAN, A. M. President Pacific Mutual Life Insurance Company WALTER LIND LEY, M. D., LL, D. President California Hospital Association INSTRUCTORS GEORGE F. BOVARD, A. M., D. D., LL. D. President of the University ALBERT B. ULREY, A. M. Professor of Zoology ANDREW C. LIFE, A. M. Associate Professor of Botany SAMUEL RITTENHOUSE, PH. D. Associate Professor of Zoology LAIRD J. STABLER, M. S. Professor of Applied Chemistry LEROY S. WEATHERBY, PH. D. Professor of Chemistry GILBERT E. BAILEY, PH. D. Professor of Geology ELMER HIGGINS Instructor in Zoology MERVIN E. OAKES DORIS P. COOMBER Laboratory Assistant in Zoology J. ROSS BECK Collector for the Station Laboratory Assistant in Botany FRANK W. YOCOM Assistant Biological Survey THE VENICE MARINE BIOLOGICAL STATION* Previous reports have dealt with the problems of founding and equipping the Marine Station of the University. In this report is indicated a preliminary account of some of the results attained, referring particularly to the work of the past two years. The fragmentary character of the results is fully appreciated by the workers engaged in these investigations. Pioneering, however, in any enterprise seldom produces re- sults which are, from the beginning, other than incomplete. We have this satisfaction concerning the work in which we have been engaged: It has been most helpful to the biological work of the University by stimulating an intense interest in the study of problems relating to living things and it has afforded an opportunity for such study which could scarcely have been attained in any other way. These results alone would be ample compensation for the effort and means in- vested. In addition to this, however, we have some small contribution of first-hand knowledge to offer and have pre- pared the way for securing results of much greater value. Most of the work has been done by those who were busily engaged in other pursuits. This has necessitated using the vacation periods of the college year chiefly for Marine Station work and the funds available did not warrant working full time then. It would have been impossible to accomplish the results attained except for the fact that we were able to use the energy and enthusiastic devotion to a scientific goal found in the students and instructors of the University. This is par- ticularly true with reference to operating and caring for the launch. No service was too severe or task too difficult for these volunteer sailors to undertake. The fact that the launch has sailed without mishap many times over the sea from Point Dume to Newport and out at sea to Catalina and San Clemente *The matter here presented consists chiefly of extracts from reports of the Director of the Station to the Board of Trustees of the University. Venice Marine Biological Station 5 islands and has visited San Diego, Santa Rosa, Santa Cruz, and Santa Barbara islands, speaks eloquently for the amateur seamanship of these men. The list of men to whom credit is due for service on the launch is too long to publish here in full. The following have given special time and service to the work. The responsibility for carrying into execution the work of the Anton Dohrn has been borne by Percy S. Barnhart and J. Ross Beck during the period November, 1912, to June, 1914; since that time by Elmer Higgins and J. Ross Beck. Student assistants who have given considerable time and have rendered efficient service are: Walter Hepner, Henry Wheeler, Ervin Wahren- brock, Mervin Oakes, Frank Yocom, Ernest Trevor and Allen Hobbs. During the summer of 1914 a line of dredging and trawling has been completed which connects our present north west goal, viz., Point Dume with the work done off the coast at Long Beach. This affords a series of hauls at most points off the coast for a distance of about sixty miles. In addition we have made further explorations in the region about Catalina Island and the launch has been used in the work of the U. S. Fish Commission during an investigation of problems relating to the albacore industry. The list of sailings will be found elsewhere in this report. The equipment of the station has been described in the Station Bulletins for November, 1910, and January, 1913. During the past year we have added a new general laboratory and office for the advanced students at the station. The laboratory has been equipped with the necessary apparatus for carrying on this work. The launch has been improved by the addition of numerous facilities which add to the com- fort of the crew and efficiency of her work. The most useful equipment recently added was a centrifugal pump with suit- able hose, two inches in diameter, for throwing a stream of water to any point on the deck. The pump is located in the engine room and is driven from the fly-wheel of the engine by a belt which is readily removed when a stream of water is not needed. 6 University of Southern California On long voyages there has been constant difficulty experi- enced in carrying living specimens in the tanks. This has happily been met by the use of the pump which provides a constant stream of pure water. The speed of the launch is not appreciably effected by this continuous use of the pump and the value to the living material is very great. The chief use of the pump, however, is found during dredging and trawling. The hauls containing specimens, mud and debris are placed on the series of screens. Here a careful application of the flowing stream of water separates the mud from the specimens in a very efficient manner. The nets can be freed from adhering specimens and mud, as well as the deck cleared after the process is completed. THE BIOLOGICAL SURVEY The field covered by the survey, except the Catalina region and shore collecting, is indicated by the Maps, Plates I, II, and III. The points at which the dredge was used are repre- sented by the letter D and the trawl by T. The numeral fol- lowing each indicates the number of the haul of the dredge or trawl respectively. The dredging and trawling was all done with the station launch, the Anton Dohrn. A description of the launch and its equipment was published in the Bulletin of the University for January, 1913. One hundred six stations have been dredged and trawled and a series of shore collections made at points within each of the regions studied. Plankton collecting has received comparatively little attention. Two series comprising nine- teen hauls have been made with a Nansen closing net in the deep water off Redondo Beach and another series of twenty- four hauls with surface nets at various points while dredging and trawling, making a total of forty-three hauls. THE PHYSICAL FEATURES OF THE REGION COVERED BY THE SURVEY At this time a mere outline of some of the physical char- acteristics of the region in which our work was done may serve to make more intelligible certain conditions attending Venice Marine Biological Station 7 the survey. Our work has been extended over the region off the coast from Point Dume to Newport Bay, a distance of about sixty miles, and the region about Catalina Island. For convenience the conditions found in the regions adjacent to the coast line may be considered in three divisions: 1. The Santa Monica Bay region. 2. The region adjacent to the San Pedro hills. 3. The San Pedro Bay region. The Santa Monica Bay region extends from Point Dume on the northwest to Rocky Point on the southwest, a distance of about thirty-six nautical miles. The twenty-five fathom line is found less than one-fourth mile from shore at Point Dume. At Long Wharf, Santa Monica and Venice it extends out about three and one-half miles, then gradually approaches the shore at Redondo Beach, where it is again less than one- fourth mile from shore. South of Redondo the twenty-five fathom line makes an abrupt bend outward from the shore and continues to a point opposite Rocky Point at a distance of about one mile. The fifty fathom line extends approxi- mately parallel to that of twenty-five fathoms to a point opposite Playa del Rey, where it is found about five and a half miles off shore. At this point it curves outward, reach- ing a distance of about ten miles opposite Manhattan Beach, where it bends shoreward, extending almost at right angles to the shore until it reaches a point about one-half mile off Redondo Beach, whence it recedes from the shore to a distance of about three and a half miles off Rocky Point. Two very prominent features of the bay region which are shown by these soundings are (1) A broad sea bench about five miles long and four miles wide at its base extends out from the fifty fathom line off Manhattan Beach. (2) A deep submarine canyon opposite Redondo Beach brings the one hundred fathom line within one and a half miles of the shore. At the head of this canyon oil springs produce a marked oily condition on the surface of the water. At times the winds and tides spread this oil over an extensive area. The coast from Point Dume to Santa Monica consists of abrupt bluffs varying from one hundred to three hundred feet, 8 University of Southern California back of which rise rugged rocky hills one thousand feet in height. In this region the kelps are found close to the shore. The coast from Santa Monica to Playa del Rey consists of a flat rather level sandy beach. Extensive tide flats are found at Venice and Playa del Rey. Rising from the beach from Playa del Rey to Redondo Beach are found extensive sand dunes at places reaching a height of two hundred feet. Ap- proaching Rocky Point the cliffs rise rather abruptly from the rocky beach to about two hundred feet in height. 2. The San Pedro Hills region extends from Rocky Point on the west to Point Fermin on the east, a distance of about eleven nautical miles. The coast here is very rugged, con- sisting of a series of headlands rising abruptly two hundred feet and separated by open coves with narrow sandy beaches. Six prominent points project into the sea from this region, viz., Rocky Point, Point Vincente, Long Point, Portuguese Point, White’s Point, and Point Fermin. The kelps abound on this coast, extending out to the ten fathom line at most points about a half mile from shore. At Portuguese Point the kelps are very close to shore but at Rocky Point they ex- tend out three-fourths of a mile to the twenty fathom line. The twenty-five fathom line is found about three-fourths of a mile from shore at Rocky Point thence it approaches the shore, at Long Point being less than one-fourth mile out. Off Portuguese Point the twenty-five fathom line is about three- fourths mile from shore. Thence it gradually recedes to a distance of about one and a fourth miles at Point Fermin. The fifty fathom line is found about three-fourths mile from shore at Long Point, thence extends out gradually to a point about two miles off shore at Point Fermin. The sea floor drops off very abruptly from the fifty fathom line off this entire region. At Portuguese Point a depth of two hundred twenty fathoms is reached two miles off shore and three hun- dred fifty fathoms at three miles. 3. The San Pedro Bay region extends from Point Fermin to Newport Bay, a distance of about twenty-seven miles. The coast here consists almost wholly of low sandy beach. Inlets of the sea have formed extensive tide flats at San Pedro, Alamitos Bay and Anaheim Landing. Venice Marine Biological Station 9 The twenty-five fathom line is found about one-fourth mile from shore at Point Fermin. It extends out two and a half miles off Long Beach, then gradually approaches the shore to a point near Newport Bay, where it is one mile out. Here an abrupt curve brings the twenty-five fathom depth within one-fourth mile of Newport Beach, whence it again recedes to a point about three-fourths mile and extends some distance nearly parallel to the shore. The fifty fathom line is found about twelve miles south of Long Beach, and bends sharply shoreward, at Newport Bay approaching within a mile of the coast. Thence it curves out and parallels the coast at a distance of about one and a half miles. In the San Pedro Bay region the shallow water extends out about twice as far as that of Santa Monica Bay. The deep water approaching Newport Beach is roughly comparable to that at Redondo Beach; the one hundred fathom depth is con- siderably farther from shore at Newport Beach. METHODS EMPLOYED IN THE SURVEY In the work done prior to this date it has not been feasible to secure complete hydrographic data concerning each of the stations studied. We have made some observations as to depth, temperatures, condition of bottom, currents, etc., and in each case a record was made of this data. With the facilities at hand, however, we have not felt that we could profitably at- tempt systematic hydrographic work of a sufficient degree of accuracy to make it worth the effort expended. We have depended largely upon the data found in the government sur- veys to guide us in our work. During the following year the departments of Physics and Chemistry of the University may be able to provide the necessary workers and equipment to begin accurate hydro- graphic investigations at each station. The location of the stations at which hauls were made in some of the earlier work was determined by the use of the compass and the running time of the launch at full speed. This was early supplemented by the use of the log. For BOTTOM CONDITIONS feO T3 > Sfe O in nj c o o 2 a 73 ^ >» 2 2 6 foO CO c c3 MX *3 O TO »H Qffl o 5 > v rt ni QQ \