How do Management Goals for Wild Chinook Salmon Align with Feasibility?
Evaluation of goals is crucial for effective management to conserve viable and diverse fish populations and to support harvest. Management of wild Chinook Salmon Oncorhynchus tshawytscha in the Snake River basin exemplifies the struggle to meet fisheries goals. Considering contemporary production of juvenile emigrants, it is imperative to determine the survival from emigration to adult ( S e‐a ) required to meet abundance goals. Increased anthropogenic impact on spawning and rearing habitats leads to higher S e‐a required to attain goals. Wilderness populations exhibit viability and could sustain fisheries with S e‐a lower than required elsewhere. Conversely, populations targeted for habitat restoration demand higher S e‐a to fulfill goals, indicating a need to enhance egg‐to‐smolt survival. However, S e‐a has fallen below the threshold needed for replacement in all populations, even at current low abundances. Despite these challenges, most populations still possess the potential to achieve abundance goals, emphasizing the importance of strategic interventions to bolster their resilience.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 2369894
- Journal Information:
- Fisheries, Journal Name: Fisheries Journal Issue: 9 Vol. 49; ISSN 0363-2415
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Productivity of Spring Chinook Salmon and Summer Steelhead in the John Day River Basin, 2008 Annual Technical Report.
Spring Outmigration of Wild and Hatchery Chinook Salmon and Steelhead Trout Smolts from the Imnaha River, Oregon; 1996 Annual Report.