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Data report : 2012 Aleutian Islands bottom trawl survey
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Data report : 2012 Aleutian Islands bottom trawl survey
  • Corporate Authors:
    Alaska Fisheries Science Center (U.S.)
  • Series:
    NOAA technical memorandum NMFS-AFSC ; 332
  • Document Type:
  • Description:
    The 2012 biennial bottom trawl survey of the Aleutian Islands region was conducted from 4 June through 14 August by the Resource Assessment and Conservation Engineering (RACE) Division of the Alaska Fisheries Science Center (AFSC), National Marine Fisheries Service (NMFS), Seattle, Washington, marking the twelfth comprehensive NMFS bottom trawl survey of this area since 1980. The surveys conducted prior to 1991 were cooperative efforts involving U.S. and Japanese scientists and vessels. From 1991 to 2000 the surveys were planned and conducted on a triennial basis by NMFS, employing chartered U.S. fishing vessels. Biennial surveys began in 2000. The 2008 survey was cancelled. The primary focus of these surveys is to continue a standardized (Stauffer 2004) time series of data to assess, describe, and monitor the distribution, abundance, and biological condition of Aleutian groundfish and invertebrate stocks. This report presents 2012 survey results for the principal fish species in areas corresponding to subdistricts of each of three North Pacific Fishery Management Council (NPFMC) regulatory areas: Eastern, Central, and Western Aleutians as well as a fourth survey area located in the southern Bering Sea. These areas are further described in the “Προσδυ Γδπζϛλ” πδϐϟζμλ με ϟϝζπ γμϐρκδλϟ. Λμ γδϟαζιδγ ϐμκναοζπμλπ ϟμ νοδσζμρπ προσδυπ αοδ καγδ ζλ ϟϝζπ οδνμοϟ, ϝμςδσδο, κμπϟ ϟζκδ-πδοζδπ με νοζλϐζναι ϛομρλγεζπϝ αλγ ζλσδοϟδβοαϟδ πνδϐζδπ αοδ ασαζιαβιδ ϟϝομρϛϝ ϟϝδ ΑΕΠC Οδπμροϐδ Δϐμιμϛυ αλγ Δϐμπυπϟδκ Κμγδιζλϛ ςδβπζϟδ» . Πνδϐζεζϐ προσδυ μβηδϐϟζσδπ ςδοδ ϟμ: ») γδεζλδ ϟϝδ γζπϟοζβρϟζμλ αλγ οδιαϟζσδ αβρλγαλϐδ με ϟϝδ νοζλϐζναι ϛομρλγεζπϝ αλγ ζκνμοϟαλϟ ζλσδοϟδβοαϟδ πνδϐζδπ ϟϝαϟ ζλϝαβζϟ ϟϝδ Αιδρϟζαλ οδϛζμλ· “) μβϟαζλ γαϟα εομκ ςϝζϐϝ ϟμ δπϟζκαϟδ ϟϝδ αβρλγαλϐδ με νοζλϐζναι ϛομρλγεζπϝ πνδϐζδπ· ”) ϐμιιδϐϟ γαϟα ϟμ γδεζλδ βζμιμϛζϐαι ναοακδϟδοπ ζλϐιργζλϛ αϛδ, ϛομςϟϝ οαϟδπ, ιδλϛϟϝ-ςδζϛϝϟ οδιαϟζμλπϝζνπ, εδδγζλϛ ϝαβζϟπ, αλγ πζφδ αλγ πδτ ϐμκνμπζϟζμλπ· ʹ) ϐμιιδϐϟ αϐϐροαϟδ λδϟ κδλπροαϟζμλ γαϟα γδπϐοζβζλϛ ϟϝδ εζπϝζλϛ δεεμοϟ με πϟαλγαογ οδπδαοϐϝ ϟοαςιπ ρπδγ βυ αιι με ϟϝδ σδππδιπ γροζλϛ ϟϝδ προσδυ· ͵) ϐμλγρϐϟ πνδϐζαι ϐμιιδϐϟζμλπ απ οδξρδπϟδγ βυ μϟϝδο οδπδαοϐϝδοπ μο οδπδαοϐϝ ϛομρνπ. Πνδϐζαι ϐμιιδϐϟζμλπ ςδοδ καγδ εμο νομηδϐϟπ αγγοδππζλϛ ϛδλδϟζϐπ με βιαϐθπνμϟϟδγ αλγ ομρϛϝδυδ ομϐθεζπϝδπ, γζεεδοδλϟ πνδϐζδπ με ϐμοαιπ αλγ ϐοδαϟζλϛ α ϛδλδϟζϐ γαϟαβαπδ εμο πδσδοαι νοδυ πνδϐζδπ εμο ρπδ ζλ ϟομνϝζϐ αλαιυπζπ. Αγγζϟζμλαι νομηδϐϟπ ζλϐιργδγ ϐμιιδϐϟζμλ με μϐϟμνρπ πδτ αλγ ςδζϛϝϟ γαϟα, πλαζιεζπϝ αλγ ιρκνπρϐθδο σμρϐϝδο πνδϐζκδλπ, πνμλϛδ ϟατμλμκυ, κμλζϟμοζλϛ ϟϝδ νοδπδλϐδ με πλαζιεζπϝ δϛϛπ ζλ θζλϛ ϐοαβ απ ςδιι απ βζϛκμρϟϝ πϐρινζλ δϛϛπ ζλ πνμλϛδ, ακβζδλϟ ιζϛϝϟ ιδσδιπ γροζλϛ εζπϝζλϛ μνδοαϟζμλπ· αϐμρπϟζϐ νομεζιζλϛ, αλγ οδϐμογδγ μβπδοσαϟζμλπ με πϝμοϟ-ϟαζιδγ αιβαϟομππ. Χγμζ:»«.7“89/Σ͵/ϞΚ-ΑΕΠC-””“ (ϝϟϟν://γτ.γμζ.μοϛ/»«.7“89/Σ͵/ϞΚ-ΑΕΠC-””“)Ω

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