00000nam 2200000za 4500 9.805564 CaOODSP 20221107135700 cr ||||||||||| 150406s1999 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- Fs70-1/1999-167E-PDF Tanasichuk, Ronald W. An evaluation of inseason echosounding estimates of British Columbian herring biomass [electronic resource] / R.W. Tanasichuk. Ottawa : Fisheries and Oceans Canada, 1999. [9] p. : fig., graphs, tables. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 99/167 Includes bibliographic references (p. [5]). Peak inseason echosounded biomass, estimated from colour echograms, was tested as a measure of prefishery biomass. Prefishery biomass was estimated as the sum of catch, as determined from sales slips, and spawner biomass, as estimated by the escapement stock assessment model. Results of simple linear regression analyses showed there was no relationship between echosounded and prefishery biomass estimates. Therefore, the current inseason echosounding methodology does not provide any basis for modifying the fishing quota as determined using the current stock assessment methodology. gccst Fisheries resources gccst Salt water fish gccst Fisheries management Canada. Department of Fisheries and Oceans. Canada. Canadian Stock Assessment Secretariat. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 99/167 (CaOODSP)9.507740 PDF 394 KB https://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-1-1999-167-eng.pdf