Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 38
Book Description
Forecasts of the 1993 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 38
Book Description
A Synopsis and Critique of Forecasts of Sockeye Salmon Returning to Bristol Bay, Alaska in 1990
Author: Stephen M. FriedPublisher:
ISBN:
Category : Bristol Bay (Alaska)
Languages : en
Pages : 37
Book Description
The total number of sockeye salmon (Oncorhynchus nerka) forecasted to return to Bristol Bay in 1990 is 26,724,000 ( 80% confidence interval: 16,365,000 43,641,000). Runs are expected to exceed spawning escapement goals for all systems. Total projected sockeye salmon harvest is expected to be 15,989,000 (80% CI: 7,630,000 - 28,906,000). Most of this harvest will be taken within Bristol Bay inshore fishing districts (14,662,000), but some has been allocated to fisheries occurring in June in the vicinity of the Shumagin Islands and South Unimak under an existing management plan (8.3% of total Bristol Bay projected harvest: 1,327,000). The 1990 forecast was based on the ADF&G method which averaged results from three linear regression models based on the relationship between returns and either spawner, sibling, or smelt data. Based on the expected performance of several modifications of the ADF&G method, all available data was used to forecast 1990 runs to Nushagak and Togiak Districts, but data prior to the 1978 return year was omitted from calculations for Naknek-Kvichak, Egegik and Ugashik Districts. Al though out of range data were not used in calculations, their occurrence suggested that age-2.3 predictions for Kvichak, Egegik, and Ugashik Rivers could be too low. This could place the actual total return within the upper range of the 80% CI. The outlook for 1991-1993, based only on the spawner-recruit component of the ADF&G method, is for the total sockeye salmon run to Bristol Bay to be greatest in 1990 and least in 1991, mostly due to variations in the Kvichak River run. For all years examined, runs to all river systems are expected to exceed spawning goal requirements.
Forecasts of the 1999 Sockeye Salmon Runs to Bristol Bay Using Traditional FRI Methodology
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 32
Book Description
Forecast of the 2000 Run of Sockeye Salmon to Bristol Bay
Author: Forecasts of the 1994 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 32
Book Description
Forecasts of the 1997 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 26
Book Description
Forecasts of the 1998 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 24
Book Description
Forecasts of the 1998 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 24
Book Description
Forecasts of the 1995 Sockeye Salmon Runs to Bristol Bay
Author: Donald E. RogersPublisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 28
Book Description
Forecast of the Sockeye Salmon Run to Bristol Bay in 1973
Author: Donald E. RogersPublisher:
ISBN:
Category : Bristol Bay (Alaska)
Languages : en
Pages : 33
Book Description