A5044149766- Fish Ecology and Management Studies
- Water Quality and Resources Studies
- Wildlife Ecology and Conservation
- Soil and Water Nutrient Dynamics
- Hydrology and Sediment Transport Processes
- Water Quality and Pollution Assessment
- Marine and fisheries research
- Aquatic Invertebrate Ecology and Behavior
- Fish Biology and Ecology Studies
- Survey Sampling and Estimation Techniques
- Genetic and phenotypic traits in livestock
Nez Perce Tribal Executive Committee
2003-2024
Abstract While the goal of supplementation programs is to provide positive, population‐level effects for species conservation concern, these can also present an inherent fitness risk when captive‐born individuals are fully integrated into natural population. In order evaluate long‐term a program and estimate demographic phenotypic factors influencing threatened population Chinook Salmon ( Oncorhynchus tshawytscha ), we genotyped tissue samples spanning 19‐year period (1998–2016) generate...
Hatchery supplementation has been developed to conserve salmonid populations and provide fisheries. We evaluated supplemented reference Chinook salmon (Oncorhynchus tshawytscha) prior to, during, after ceased for 22 years in two major drainages Idaho, USA. Basin-level analyses showed increased abundance at some life stages, but effects did not persist into the postsupplementation phase had no apparent influence on productivity. Natural-origin juvenile during results adults were ambiguous....
Salmon provide an important resource subsidy and linkage between marine land-based ecosystems. This flow of energy nutrients is not unidirectional (i.e., upstream only); in addition to passive nutrient export via stream flow, juvenile emigrants actively from freshwater environments. In some cases, can exceed import. We evaluated fluxes streams across central Idaho, USA, using Chinook salmon (Oncorhynchus tshawytscha) adult escapement production data 1998 2008. found the majority stream-years...
Abstract Over the last century, Chinook Salmon Oncorhynchus tshawytscha populations in Pacific Northwest have experienced dramatic declines, leading to many of them being listed as threatened under Endangered Species Act. The abundance these relative thresholds for delisting remains primary metric assessing recovery, yet determining true population abundances from multiple survey types with unknown levels accuracy and precision difficult. spring–summer Johnson Creek, Idaho, has been measured...
Abstract Evaluation of goals is crucial for effective management to conserve viable and diverse fish populations support harvest. Management wild Chinook Salmon Oncorhynchus tshawytscha in the Snake River basin exemplifies struggle meet fisheries goals. Considering contemporary production juvenile emigrants, it imperative determine survival from emigration adult (Se-a) required abundance Increased anthropogenic impact on spawning rearing habitats leads higher Se-a attain Wilderness exhibit...
Abstract Accurate estimates of salmonids passing Lower Granite Dam on the Snake River, by species and origin, are a critical input to assessing status trends various populations as well successful management fisheries in River basin. Here, we describe state-space model that such escapement past dam using window counts, PIT tag observations, data from an adult fish trap, accounting for issues nighttime passage, fallback reascension, potential observation error at window, uncertainty trap...