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CalCOFI Reports, Vol. 1, 1950
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Contents
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Page
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INTRODUCTION
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7
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HOW THE WORK IS DONE
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11
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The Ships
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The Station Plan
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11
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Collection of Data
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Processing of Data
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13
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Instrumentation
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18
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Midwater Trawl
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High-Speed Gear
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18-19
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Floating Fish - Larvae Trap
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Plankton-Sample Splitter
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20
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ChlorinityTitrator
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ASOP
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20
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Other Projects
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Use of Soundings to Locate Sardine Schools
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21-22
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WHAT HAS BEEN ACCOMPLISHED
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23
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Studies of the Sardine's Environment
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23
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Physical Oceanography
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23
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Upwelling
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Mixing
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23-25
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Evaporation
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Internal Waves
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25-29
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Delineation of Spawning Areas
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Problems of Processing
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29
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Chemical Oceanography
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30
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Biological Oceanography
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30
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Marine Botany
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30
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Marine Invertebrate Plankton
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33
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Crustacean Plankton
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33
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Dispersal by Water Currents
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35
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Plankton Volumes
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35
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Recruitment Research
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37
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The 1950 Sardine Spawning Season
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37
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Relation of Sardine Spawning to Oceanographic Conditions
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39
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Work on Other Fishes
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40
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Young of Other Fishes Associated with the Sardine
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41
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Jack Mackerel
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Anchovy
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41
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Saury
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Other Food Fishes
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41
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Fodder Fishes
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41
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Adults of Other Fishes
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41
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Northern Anchovy
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Herring-Like Fishes
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41-42
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Albacore
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42
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The 1950 Young Sardine Surveys
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43
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Methods of Approach
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Methods of Collection
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43-44
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Limitations
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The 1950 Work
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44
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Availability
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44
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Behavior and Physiology
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46
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Feeding Behavior
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Schooling Behavior
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46
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Miscellaneous Observations
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46
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Electrical Stimulation of Fish in Sea Water
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46
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Conditions of Experiments
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Definitions of Terms
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46-47
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Tabulations of Records and Results
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Conclusions
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47
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Continuing Studies
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47
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Length Frequencies
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47
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Age Determinations
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47
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Racial Studies
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48
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Vital Statistics
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48
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Marine Birds and Mammals
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49
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SUMMARY
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50
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PLANS FOR 1951
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51
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APPENDIX 1: Personnel Engaged in Research Under
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California Cooperative Sardine Research Program
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52
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APPENDIX 2: Current Projects Under California
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Cooperative Sardine Research Program
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54
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