登入
選單
返回
Google圖書搜尋
A Pilot Study to Estimate Total Chinook Mortality Associated with Seine Fishing in Johnstone Strait During 1986
Canada. Dept. of Fisheries and Oceans
D. A. Nagtegaal
P. J. Starr
Riddell, B. E
Pacific Biological Station
出版
Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station
, 1988
URL
http://books.google.com.hk/books?id=I7A-NAEACAAJ&hl=&source=gbs_api
註釋
In 1986 a pilot study was conducted in the Johnstone Strait sockeye seine fishery to assess total chinook mortality. Catch statistics presently recorded are determined from records of chinook sales and are suspected to underestimate the catch of small (3 to 5 lbs.) and adult (over 5 lbs.) chinooks, and seriously underestimate the total mortality of all chinook. Data were collected for catch per seine set by species and size categories of chinook, the number of sets made by vessels per day, and the total number of vessels per day active in the fishery. Calculation of total catch involved extrapolating the estimated mean catch per set over all sets made and incorporated the Monte-Carlo bootstrap technique to determine the mean catch estimate and 95% confidence interval.
