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Sonar estimation of chum salmon passage in the Aniak River, 2003

作者: Heath D Sandall; Carl T Pfisterer; Alaska. Division of Sport Fish.; Alaska. Division of Commercial Fisheries.
出版商: Anchorage : Alaska Dept. of Fish and Game, Division of Commercial Fisheries [i.e. Sport Fish], Research and Technical Services, [2006]
叢書: Fishery data series, no. 06-32.
版本/格式:   Print book : 文獻 : 州政府或者省政府刊物   電腦資料 : 英語
資料庫:WorldCat
提要:
The Aniak River sonar project has provided daily fish passage estimates for most years since 1980. During this time, the project has undergone important changes including changing from the original Bendix sonar to dual-beam and is in the process of migrating to a high frequency imaging sonar (DIDSON). This season, the project adopted a new sampling protocol in which the sonar operated for three 4-hour blocks each  再讀一些...
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類型/形式: Statistics
資料類型: 文獻, 政府刊物, 州政府或者省政府刊物, 網際網路資源
文件類型: 圖書, 電腦資料, 網路資源
所有的作者/貢獻者: Heath D Sandall; Carl T Pfisterer; Alaska. Division of Sport Fish.; Alaska. Division of Commercial Fisheries.
OCLC系統控制編碼: 70668433
注意: "Alaska Department of Fish and Game, Divisions of Sport Fish and Commercial Fisheries"--Cover.
"June 2006."
描述: ii, 50 pages : illustrations, map ; 28 cm.
詳述: This item was harvested from the Fish and Game web site: http://www.sf.adfg.state.ak.us/FedAidPDFs/fds06-32.pdf in July 2006 for the Alaska State Publications Program; remote access available via StaticURL.
叢書名: Fishery data series, no. 06-32.
責任: by Heath D. Sandall and Carl T. Pfisterer.

摘要:

The Aniak River sonar project has provided daily fish passage estimates for most years since 1980. During this time, the project has undergone important changes including changing from the original Bendix sonar to dual-beam and is in the process of migrating to a high frequency imaging sonar (DIDSON). This season, the project adopted a new sampling protocol in which the sonar operated for three 4-hour blocks each day (0000-0400, 0800-1200, and 1600-2000 hours). The Aniak River sonar project was operational from 28 June through 31 July in 2003. During this period, an estimated 393,396 fish (SE 7,871) passed through the ensonified area. The peak passage of 23,208 fish occurred on 14 July and the 50% passage date occurred on 17-July. The escapement estimate was primarily comprised of age-0.3 fish (80.6%), while age -0.4 (17.9%), -0.5 (1.1%) and -0.2 (0.4%) classes were also present. Side-by-side comparisons of counts obtained with the BioSonics and DIDSON equipment suggest undercounting with the BioSonics at high densities.

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Primary Entity

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   library:placeOfPublication <http://id.loc.gov/vocabulary/countries/aku> ;
   rdfs:comment "Unknown 'gen' value: sgp" ;
   schema:about <http://id.worldcat.org/fast/925949> ; # Fish populations--Measurement
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   schema:about <http://experiment.worldcat.org/entity/work/data/57734289#Topic/chum_salmon_alaska_aniak_river> ; # Chum salmon--Alaska--Aniak River
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Related Entities

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<http://id.worldcat.org/fast/925949> # Fish populations--Measurement
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<http://viaf.org/viaf/126668649> # Alaska. Division of Commercial Fisheries.
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<http://viaf.org/viaf/133594484> # Alaska. Division of Sport Fish.
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