Comparisons of Soviet and United States ichthyoplankton sampling
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Comparisons of Soviet and United States ichthyoplankton sampling

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  • Description:
    During the 1970s and 1980s ichthyoplankton was sampled on many cruises by Soviets and Americans(United States) in the Bering Sea and Gulf of Alaska primarily to investigate the early life history of walleye pollack (Theragra chalcogramma). Some of this sampling was done independently by ships of each nation, but some was on cooperative Soviet/American cruises aboard Soviet ships using American 60 cm bongo nets. Usually the Soviets processed the sample from one side of the bongo on board and the Americans preserved the sample from the other side for processing ashore. In addition to these shared samples, the Soviets used an IKS net for their own studies with the samples processed on board, and the Americans used a 60 cm bongo for theirs with the samples processed ashore. On some cooperative Soviet/American cruises, comparative tows were also made with the IKS and bongo nets at certain stations. Comparing the bongo catches tests differences in American and Soviet sample processing. Comparing the bongo and IKS catches tests differences in the two types of nets and towing procedures. Such comparative tows were made at a total of 87 stations on two cruises in the Bering Sea in 1988 and 1991. Here we compare the pollock egg and larval catches from these comparative tows. The ultimate purpose of this study is to see if regression models can be fit to the data to predict bongo catch of pollock eggs or larvae per l0 m² given Soviet IKS catch per l0 m².
  • Content Notes:
    by Kathryn L. Mier and Arthur W. Kendall, Jr.

    "September 1994."

    Also available online in PDF format via AFSC and the NOAA Central Library.

    Includes bibliographical references (page 12).

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    Public Domain
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