Author :
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ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (727 download)
Book Synopsis Design and Analysis of Salmonid Tagging Studies in the Columbia Basin, Volume XV ; Appraisal of the Relationship Between Tag Detection Efficiency at Bonneville Dam and the Precision of In-River Survival Estimates of Returning PIT-Tagged Chinook Salmon, 2000 Technical Report by :
Download or read book Design and Analysis of Salmonid Tagging Studies in the Columbia Basin, Volume XV ; Appraisal of the Relationship Between Tag Detection Efficiency at Bonneville Dam and the Precision of In-River Survival Estimates of Returning PIT-Tagged Chinook Salmon, 2000 Technical Report written by and published by . This book was released on 2000 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the advent of the installation of a PIT-tag interrogation system in the Cascades Island fish ladder at Bonneville Dam, this report provides guidance on the anticipated precision of in-river survival estimates for returning adult salmonids, between Bonneville and Lower Granite dams, for various levels of system-wide adult detection probability at Bonneville Dam. Precision was characterized by the standard error of the survival estimates and the coefficient of variation of the survival estimates. The anticipated precision of in-river survival estimates for returning adult salmonids was directly proportional to the number of PIT-tagged smolts released and to the system-wide adult detection efficiency at Bonneville Dam, as well as to the in-river juvenile survival above Lower Granite Dam. Moreover, for a given release size and system-wide adult detection efficiency at Bonneville Dam, higher estuarine and marine survival rates also produced more precise survival estimates. With a system-wide detection probability of P{sub BA} = 1 at Bonneville Dam, the anticipated CVs for in-river survival estimate ranged between 9.4 and 20% with release sizes of 10,000 smolts. Moreover, if the system-wide adult detection efficiency at Bonneville Dam is less than maximum (i.e., P{sub BA}