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Tuesday, July 21, 2020 | History

2 edition of Summary of escapement index counts of Chinook salmon in the northern Cook Inlet management area, 1958-1996 found in the catalog.

Summary of escapement index counts of Chinook salmon in the northern Cook Inlet management area, 1958-1996

Robert Lafferty

Summary of escapement index counts of Chinook salmon in the northern Cook Inlet management area, 1958-1996

by Robert Lafferty

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Published by Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services in Anchorage .
Written in English

    Subjects:
  • Chinoook salmon -- Alaska -- Cook Inlet -- Statistics.,
  • Salmon fisheries -- Alaska -- Cook Inlet -- Statistics.,
  • Fish populations -- Alaska -- Cook Inlet -- Measurement.

  • About the Edition

    Escapement index counts of chinook salmon Oncorhynchus tshawytscha have been conducted in streams of Northern Cook Inlet Management Area since 1958. Spawning chinook salmon have been counted from both helicopters and fixed-wing aircraft. Eighty-eight streams have been documented to contain spawning chinook salmon in the Northern Cook Inlet Management Area. Aerial escapement index counts are conducted on 17 streams on an annual basis (1977-1996), and it is believed that 50% to 60% of the chinook salmon production of Northern Cook Inlet returns to these 17 streams. Escapement counts from weirs were compared to escapement index counts; index counts averaged 46% agreement with weir counts. Four years of paired escapement index counts from three observers had 93% agreement.

    Edition Notes

    Statementby Robert Lafferty.
    SeriesFishery data series -- no. 97-8.
    ContributionsAlaska. Division of Sport Fish.
    The Physical Object
    Paginationii, 79 p. :
    Number of Pages79
    ID Numbers
    Open LibraryOL15450041M


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Summary of escapement index counts of Chinook salmon in the northern Cook Inlet management area, 1958-1996 by Robert Lafferty Download PDF EPUB FB2