- Author : J. F. Schweigert
- Publisher :
- Release : 1984
- ISBN :
- Pages : 43 pages
Herring Stock Estimates from Diving Surveys of Spawn for the North Coast of British Columbia in 1982
Download or read book Herring Stock Estimates from Diving Surveys of Spawn for the North Coast of British Columbia in 1982 written by J. F. Schweigert and published by . This book was released on 1984 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divers surveyed and sampled major 1982 herring spawns inStatistical Areas 3 to 5. Spawner biomass was estimated at 5700tonnes, which agreed closely with prespawning echosounderestimates, but was considerably lower than the 19,500 to 29,000tonnes estimated with population models. The low estimatedspawner biomass supports the decision to close the sac-roefishery in Chatham Sound from 1979 through 1983 and in PorcherIsland from 1982 through 1983.