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Tuesday, July 21, 2020 | History

2 edition of Trawl survey of groundfish resources in the Gulf of Alaska, summer 1978 found in the catalog.

Trawl survey of groundfish resources in the Gulf of Alaska, summer 1978

Gene C. Feldman

Trawl survey of groundfish resources in the Gulf of Alaska, summer 1978

by Gene C. Feldman

  • 299 Want to read
  • 13 Currently reading

Published by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, National Technical Information Service [distributor in Seattle, Wash, Springfield, Va .
Written in English

    Subjects:
  • Fishery resources -- Alaska -- Alaska, Gulf of.,
  • Fish populations -- Alaska -- Alaska, Gulf of.,
  • Fishing surveys -- Alaska -- Alaska, Gulf of.

  • Edition Notes

    Statementby Gene C. Feldman and Craig S. Rose.
    SeriesNOAA technical memorandum NMFS F/NWC -- 13.
    ContributionsRose, Craig S., Northwest and Alaska Fisheries Center (U.S.). Resource Assessment and Conservation Engineering Division.
    The Physical Object
    Paginationiv, 44 p. :
    Number of Pages44
    ID Numbers
    Open LibraryOL17827607M

    AFSC/RACE/SAP: Small Mesh Survey Data Data Set Published / External Shellfish Assessment Program Project Completed This database contains information about shrimp surveys conducted by the National Marine Fisheries Service and the Alaska Department of Fish and Game in the Gulf of Alaska, Bering Sea and Aleutian Islands dating back to The main tables used for . B. A. Megrey et al. Figure 1. Time series of age-2 walleye pollock recruitment (top panel) and spawner and population biomass (bottom panel) derived from application of fisheries-dependent and fishing-independent data to a stock assessment model. 1 = e g g 8 4 (Ow

    Agenda D-3(b) June GOA Salmon & Crab Bycatch Measures iv NPFMC Staff Discussion Paper List of Tables Table 1. Bycatch of Pacific salmon in Gulf of Alaska groundfish trawl fisheries, by species.   AFSC trawl surveys The AFSC groundfish trawl surveys sample the continental shelf and upper continental slope of the Gulf of Alaska at depths to m, and in some years as deep as m, during the summer (Britt and Martin, ; Fig. 1).

    Description of indicator: Groundfish were sampled using a trawl net towed in the upper 20 m of the eastern Bering Sea during the Alaska Fisheries Science Center’s Bering Arctic Subarctic Integrated Surveys (BASIS) during late summer, – Gulf of Alaska groundfish survey: 6/15/ Pacific Ocean Perch: A: Gulf of Alaska groundfish survey: 9/26/ Pacific Ocean Perch: B: Aleutian Islands groundfish survey.


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Trawl survey of groundfish resources in the Gulf of Alaska, summer 1978 by Gene C. Feldman Download PDF EPUB FB2

Trawl survey of groundfish resources in the Gulf of Alaska, summer [Gene C Feldman; Craig S Rose; Northwest and Alaska Fisheries Center (U.S.). Resource Assessment and Conservation Engineering Division.].

Gulf of Alaska Groundfish Bottom Trawl Survey Data; Gulf of Alaska Groundfish Bottom Trawl Survey Data; Gulf of Alaska Groundfish Bottom Trawl Survey Data; Gulf of Alaska Groundfish Bottom Trawl Survey Data; Bering Sea Upper Continental Slope.

Bering Sea Upper Continental Slope Groundfish Bottom. During the summer and fall ofthe Northwest and Alaska. Fisheries Center, Seattle, of the National Marine Fisheries Service (NMFS) conducted a comprehensive groundfish the eastern and central Gulf of Alaska.

This survey was part of the NMFS Marine Resources Monitoring, Assessment, and. "Trawl survey of groundfish re­ sources in the Gulf of Alaska, summer ," by Gene C. Feldman and Craig S. Rose. U.S. Oep. Commer., NOAA Tech. Memo. NMFS F/NWC,44 p., (NTIS number is PB82 ) "AUnation removals of groundfish, herring, and shrimp from the eastern Bering Sea and northeast Pacific Ocean, ," by Sueto Murai.

Small-mesh trawl surveys, conducted annually sinceresulted in a strong database with nea individual sampling tows, collected over widely dispersed regions of the Gulf of Alaska. These data illustrate a massive change in the marine ecosystem, beginning in Alaska The Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center conducts bottom trawl surveys to monitor the condition of the bottom-dwelling fish and crab stocks of Alaska.

These data include catch per unit effort for each identified species at a standard set of stations. Scientists of the Groundfish Assessment Program of Alaska Fisheries Science Center's Resource Assessment and Conservation Engineering (RACE) Division conducted the tenth Gulf of Alaska Biennial Bottom Trawl Survey during the summer of This survey extends to 15 the series of surveys, previously conducted every 3 years between and   In Stock assessment and fishery evaluation report for the groundfish resources of the Gulf of Alaska.

North Pacific Fishery Management Council, W 4th Ave., Suite Anchorage, AK, USA, pp. 53– Errors in Alaska POP trawl survey biomass estimates are currently viewed more as function of high variability between sampling cells and availability (Hanselman et al., ; Spencer and Ianelli. Survey Updates: Forthcoming into the Ecosystem Status Report presented to the NPFMC.

Spatial and temporal trends in the abundance and distribution of forage fish and squid in the eastern Gulf of Alaska during summer 2. For this analysis, we included all bottom trawl surveys of the southeastern Bering Sea shelf that used either a mesh eastern trawl or a modified version of this trawl.

The mesh eastern trawl was used by the IPHC from toby NMFS beforeand by the State of Alaska from the mids to the present. Gulf of Alaska (GOA) Atka mackerel are on a biennial stock assessment schedule to coincide with the availability of new survey data from the biennial trawl survey.

The previous full assessment was presented inwhich included data from the GOA bottom trawl survey. On alternate (even). groundfish resources of the Gulf of Alaska (Dixon Entrance to Kodiak Island) during July—November The work was undertaken as part of a multi—year survey of rockfish and other groundfish of the northeast Pacific which began in Inan intensive bottom trawl and acoustic/midwater trawl survey, which targeted on rockfish and.

To examine long-term trends in the relative magnitude of fisheries resources within the Survey Area, a comparison was made between the catch per unit of effort (kg/hr) for the "" (actually ) survey by the IPHC and the BCF and the "" (actually ) surveys by the NMFS.

Jellyfish – Gulf of Alaska Bottom Trawl Survey. Description of indicator: Pelagic jellyfish were sampled using a rope trawl towed in the upper 20 m of the eastern Gulf of Alaska during the Alaska Fisheries Science Center’s Gulf of Alaska Assessment Survey, – GULF OF ALASKA, BERING SEA AND THE ALEUTIAN ISLANDS Robert P.

Stone and S. Kalei Shotwell research trawl surveys (Resource Assessment and Conservation Engineering Database Resource Assessment and Conservation Engineering Division’s Groundfish Assessment Program).

Although RACEBASE includes records of research cruises sincedata. Bottom Trawl Surveys RACE GAP – 10 Aleutian Islands Biennial Bottom Trawl Survey of Groundfish and Invertebrate Resources – RACE GAP 13 Winter Acoustic-Trawl Surveys in the Gulf of Alaska MACE Program-- 15 Summer acoustic vessel of opportunity (AVO) index for midwater Bering Sea walleye pollock--MACE surveys that have been conducted on U.S.

West Coast groundfish by the NMFS Alaska Fisheries Science Center {AFSC). Before these two surveys were the principal sources for fishery-independent data on the status and distribution of the commercial groundfish resources. To assess spatial and temporal patterns in groundfish communities we used fisheries independent surveys conducted by the Alaska Fisheries Science Center (AFSC) between and The AFSC used the same sampling methodology and bottom trawl gear over the time series (stratified random sampling design; Armistead and Nichol, ; Stauffer.

trawl surveys in Alaskan waters include an annual survey of the crab and groundfish resources of the eastern Bering Sea shelf and biennial surveys of the Gulf of Alaska (odd years) and the Aleutian Islands and the upper continental slope of the eastern Bering Sea (even years).

total third-wire effort in Alaska groundfish fisheries. One objective of this report was to provide NMFS with estimates of warp and third-wire effort by target fishery, large geographic region and vessel type for Alaska trawl fisheries to fulfill their required reporting to the U.S.

Fish and Wildlife Service (USFWS). A .Minutes of the Plan Team for the Groundfish Fisheries of the Gulf of Alaska. November North Pacific Fishery Management Council W 4th Avenue, Suite Anchorage, AK The meeting of the Gulf of Alaska groundfish Plan Team thconvened on Novem at 3pm at the Alaska Fishery Science Center, Seattle, WA.As part of the Gulf of Alaska Integrated Ecosystem Research Program, an acoustic-trawl survey was conducted in the summers and falls of and to quantify variability in species composition.