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Bull Trout Life History, Genetics, Habitat Needs, and Limiting Factors in Central and Northeast Oregon, Annual Report 2001.

Description: Bull trout Salvelinus confluentus exhibit a number of life history strategies. Stream-resident bull trout complete their life cycle in their natal tributaries. Migratory bull trout spawn in tributary streams where juvenile fish usually spend from one to four years before migrating to either a larger river (fluvial) or lake (adfluvial) where they rear before returning to the tributary stream to spawn (Fraley and Shepard 1989). These migratory forms occur where conditions allow movement from spaw… more
Date: December 1, 2002
Creator: Hemmingsen, Alan R.; Gunckel, Stephanie L.; Sankovich, Paul M. & Howell, Philip J.
Partner: UNT Libraries Government Documents Department
open access

Bull Trout Life History, Genetics, Habitat Needs, and Limiting Fact in Central and Northeast Oregon. Annual Report 1999.

Description: This section describes work accomplished in 1999 that continued to address two objectives of this project. These objectives are (1) determine the distribution of juvenile and adult bull trout Salvelinus confluentus and habitats associated with that distribution, and (2) determine fluvial and resident bull trout life history patterns. Completion of these objectives is intended through studies of bull trout in the Grande Ronde, Walla Walla, and John Day basins. These basins were selected because … more
Date: August 1, 2001
Creator: Hemmingsen, Alan R.; Gunckel, Stephanie L. & Howell, Philip J.
Partner: UNT Libraries Government Documents Department
open access

Bull Trout Life History, Genetics, Habitat Needs, and Limiting Factors in Central and Northeast Oregon, Annual Report 2000.

Description: This section describes work accomplished in 2000 that continued to address two objectives of this project. These objectives are (1) determine the distribution of juvenile and adult bull trout Salvelinus confluentus and habitats associated with that distribution, and (2) determine fluvial and resident bull trout life history patterns. Completion of these objectives is intended through studies of bull trout in the Grande Ronde, Walla Walla, and John Day basins. These basins were selected because … more
Date: November 1, 2001
Creator: Hemmingsen, Alan R.; Gunckel, Stephanie L.; Sankovich, Paul M. & Howell, Philip J.
Partner: UNT Libraries Government Documents Department
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