跳到内容
Sonar estimation of chum salmon passage in the Aniak River, 2003 预览资料
关闭预览资料
正在查...

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

著者: 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]
丛书: Fishery data series, no. 06-32.
版本/格式:   图书 : 文献 : 州政府或者省政府刊物   计算机文档 : 英语
数据库: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  再读一些...
评估:

(尚未评估) 0 附有评论 - 争取成为第一个。

主题
更多类似这样的

 

在线查找

与资料的链接

在图书馆查找

&AllPage.SpinnerRetrieving; 正在查找有这资料的图书馆...

详细书目

类型/形式: Statistics
材料类型: 文献, 政府刊物, 州政府或者省政府刊物, 互联网资源
文件类型: 书, 计算机文档, 互联网资源
所有的著者/提供者: Heath D Sandall; Carl T Pfisterer; Alaska. Division of Sport Fish.; Alaska. Division of Commercial Fisheries.
OCLC号码: 70668433
注意: "Alaska Department of Fish and Game, Divisions of Sport Fish and Commercial Fisheries"--Cover.
"June 2006."
描述: ii, 50 p. : ill., map ; 28 cm.
详述: 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.
丛书名: Fishery data series, no. 06-32.
责任: 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.

评论

用户提供的评论
正在获取GoodReads评论...
正在检索DOGObooks的评论

标签

争取是第一个!
确认申请

你可能已经申请过这份资料。如果还是想申请,请选确认。

链接数据


<http://www.worldcat.org/oclc/70668433>
library:oclcnum"70668433"
library:placeOfPublication
library:placeOfPublication
rdf:typeschema:Book
rdf:typeschema:MediaObject
rdf:valueUnknown value: gpb
rdf:valueUnknown value: sgp
rdf:valueUnknown value: dct
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:contributor
schema:contributor
schema:contributor
schema:creator
schema:datePublished"2006"
schema:description"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."@en
schema:exampleOfWork<http://worldcat.org/entity/work/id/57734289>
schema:genre"Statistics"@en
schema:inLanguage"en"
schema:isPartOf
schema:name"Sonar estimation of chum salmon passage in the Aniak River, 2003"@en
schema:numberOfPages"50"
schema:publication
schema:publisher
wdrs:describedby

Content-negotiable representations

关闭窗口

请登入WorldCat 

没有张号吗?很容易就可以 建立免费的账号.