Competition and Information Among British Columbia Salmon Purse SeinersA field study of the British Columbia salmon purse-seine fleet during the 1980s. The data were obtained from a voluntary logbook program and from 51 flights in a Cessna airplane above the fleet. |
Contents
Salmon Seine Boats and | 20 |
Data Collection and Verification | 33 |
Independence and Distribution of Effort | 44 |
CHAPTER V | 60 |
Effects of Set Strategies on Catch per | 72 |
Discussion | 79 |
CHAPTER VII | 131 |
Literature Cited | 138 |
Common terms and phrases
aggregations ANOVA Area 13 assumptions average line-up Beach set line-ups British Columbia catch per set catch per unit catch rates catchability components correlation CPUE distributions critical depensation decrease density Discovery Passage dynamics effects effort levels equation exploitation competition exploitation rates exploited access points Figure fish abundance fishermen fishing area fishing power flight function gear Gulland high effort hypothesis indicated interference competition Johnstone Strait fishery Kelsey Bay line-up distributions line-up length logbook data Malcolm Island mean catch negative binomial distribution number of access number of boats number of sets observation error open set overflight model Pacific Ocean parameter estimate negative percent Poisson predicted purse purse seine Queen Charlotte Strait queue lengths random relative response sales slip salmon abundance sample saturated set catches set effort set strategy set type sets per boat skewness skipjack tuna skippers sockeye tides total catch unit effort variable variance vulnerable fish yellowfin tuna