te ee eee gee CBAPTER 2 OPERATIONS ab * Pr cs a edIeta * To carry out the field portion of the operations, representatives of the Applied Fisheries Laboratory, University of Washington, spent the period from Oct. 20 to Nov. 11, 1952, at Eniwetok. Fietd parties left the group headquarters on the USS Oakhill (LSD-7) each day for the collecting stations about the lagoon. Collections were made by the following specialists in each of the several fields: Kelshaw Bonham Edward E. Held Frank G. Lowman A Ralph F. Palumbo Allyn H. Seymour Arthur D. Welander Lauren R. Donaldson Invertebrates Invertebrates Instrumentation and land vertebrates Aquatic and land piants Plankton and water samples Fish Project Leader The final processing of the material and the analysis of the data were accomolished by the combined efforts of the entire staff of the Laboratory. Each of the several specisi.atea super vised the work in his field of specialization and summarized the results for tacius.on tn this group report. Dorothy South was responsible for doing the chemical analyses on selected spec imens of sand, soil, and biological samples. The work on absorption and decay curves was handled by Paul Olsoa. 2.1 AREAS SAMPLED The locations of the collecting stations are shown in Fig. 2.1. There were seven major stations, six of which were approximetely the same as those visited in 1948 and 1949. The seventh station, Bogombogo-Bogallua, was 2 to 3 miles west of the Mike shot test island. The game areas from which collections were made before the test were revisited after the test where circumstances allowed. Collections of fish, invertebrates, and algae were generally made on the lagoon side from the intertidal zone down to a depth of about 12 ft. Occasionally the sampiing area was extended to the ocean side of the collecting station, especially if there was a scarcity of specimens on the lagoon side. Terrestrial plants and animals were gathezed from the islands, and, while the reef and island collections were being made, plankton-towing, dredging, and water-sampling operations were being carried on in contiguous waters. These operations on occasion extended 2 or 3 miles from the area of reef collections. UNCLASSIFIED