Filters: Types: OGC WMS Layer (X) > partyWithName: Bromaghin, J. F. (X) > Types: Map Service (X) > Extensions: Citation (X) > Extensions: Shapefile (X) > Types: Downloadable (X) > Categories: Data (X)5 results (99ms)
Evidence of handling mortality in fall chum salmon caused by fish wheel capture on the Yukon River, Alaska
A versatile net selectivity model, with application to Pacific salmon and freshwater species of the Yukon River, Alaska
Gillnet catch data from the lower Yukon River, AK, collected from 1990 to 2003 in conjunction with a sonar study to estimate the abundance of migrating fish, were assembled. The full dataset contained 92,029 records with complete species and length information. A subset of data for the eight most prevalent groups of fish was selected for the estimation of net selectivity. The reduced dataset contained 89,984 records for Chinook salmon (Oncorhynchus tshawytscha), summer and fall runs of chum salmon (O. keta), coho salmon (O. kisutch), pink salmon (O. gorbuscha), humpback whitefish (Coregonus pidschian), broad whitefish (C. nasus), and various cisco (Coregonus) species. A Pearson function was used as a net selectivity...
A likelihood framework for joint estimation of salmon abundance and migratory timing using telemetric mark-recapture
Many fisheries for Pacific salmon Oncorhynchus spp. are actively managed to meet escapement goal objectives. In fisheries where the demand for surplus production is high, an extensive assessment program is needed to achieve the opposing objectives of allowing adequate escapement and fully exploiting the available surplus. Knowledge of abundance is a critical element of such assessment programs. Abundance estimation using mark—recapture experiments in combination with telemetry has become common in recent years, particularly within Alaskan river systems. Fish are typically captured and marked in the lower river while migrating in aggregations of individuals from multiple populations. Recapture data are obtained using...