Abundance, Age, Size, Sex and Coded Wire Tag Recoveries for Chinook Salmon Escapements of Campbell and Quinsam Rivers, 1995 PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Abundance, Age, Size, Sex and Coded Wire Tag Recoveries for Chinook Salmon Escapements of Campbell and Quinsam Rivers, 1995 PDF full book. Access full book title Abundance, Age, Size, Sex and Coded Wire Tag Recoveries for Chinook Salmon Escapements of Campbell and Quinsam Rivers, 1995 by H. R. Frith. Download full books in PDF and EPUB format.
Author: H. R. Frith
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author: H. R. Frith
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author: H. Russ Frith
Publisher:
ISBN:
Category : Chinook salmon fisheries
Languages : en
Pages : 59
Get Book Here
Book Description
Author: H. R. Frith
Publisher:
ISBN:
Category :
Languages : en
Pages : 59
Get Book Here
Book Description
This report is part of a series describing the escapement monitoring and biological sampling of chinook salmon in the Campbell/Quinsam River system. The escapements of chinook salmon were calculated using the adjusted Petersen method by tagging carcasses to produce separate estimates for sexes and rivers and summing these to form a total estimate for the in-river escapement of chinook. The total recovery of chinook salmon at the Quinsam Hatchery was then added to the in-river estimates to produce a final escapement figure for the entire system. The report discusses potential biases in the Petersen method, carcass tagging method, and method of stratification and provides results of population estimates, tests for bias in tagging and recovery, population composition (age, length, and sex), and the results of coded wire tagging studies.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 213
Get Book Here
Book Description
The objective of this document is to provide Chinook salmon escapement estimates for the Campbell/Quinsam River system based upon the adjusted Petersen method of population estimation utilizing tagged and recovered carcasses. In combination with Petersen estimates, coded-wire tagged (CWT) adult returns are used to estimate total CWT and hatchery contribution to river escapements. In this study, escapement estimates were stratified by river, sex, age, and tag code. Hatchery contributions to strata were derived by expanding the actual number of coded wire tag returns for each brood year and each tag code.--Document.
Author: H. R. Frith
Publisher:
ISBN:
Category :
Languages : en
Pages : 59
Get Book Here
Book Description
Author: D. A. Nagtegaal
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 109
Get Book Here
Book Description
The chinook salmon of the Campbell/Quinsam river system was selected as one of the indicator stocks for assessing the response of Pacific chinook salmon stocks to a new harvest management regime. This report is the fourth in a series describing the escapement monitoring and biological sampling of chinook salmon in this system. The 1989-90 escapements of chinook salmon were calculated using the adjusted Petersen methods by tagging carcasses to produce separate estimates for sexes and rivers and summing these to form a total estimate for the in-river escapement of chinook. The total recovery of chinook salmon at the Quinsam Hatchery was then added to the in-river estimates to produce a final escapement figure for the entire system. This report discusses potential biases in the Petersen method, and the carcass tagging and live tagging approaches, and method of stratification. Assumptions for the methods used and the tests for biases caused by violations of assumptions are also described. Results are given for population estimates, tests of bias in tagging and recovery, population composition (age, length, sex) and the results of coded wire tagging studies. Results are then discussed in relation to other studies.
Author: Joyce H. Andrew
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
Get Book Here
Book Description
The chinook salmon of the Campbell/Quinsam river system were selected as one of the indicator stocks for assessing the response of Pacific chinook salmon stocks to a new harvest management regime, begun in 1984, to build stocks to historical levels. This report presents the results from 1986-88 of intense escapement monitoring and sampling of chinook salmon, calculated using the adjusted Petersen method by tagging carcasses to produce separate estimates for sexes and rivers and summing these to form a total estimate for the in-river escapement of chinook. The total recovery of chinook salmon at the Quinsam Hatchery was then added to the in-river estimates to produce a final escapement figure for the entire system. Potential biases in the Petersen method, the carcass and live tagging approaches, and method of stratification are discussed. The results give population estimates and composition (age, length, and sex) and results of coded wire tagging studies.
Author: H. R. Frith
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
Get Book Here
Book Description
