Due to time and resource limitations, the growth of many fish species is evaluated with age and length data in a length‐stratified subsample of a sample from a population. Some fisheries professionals draw inferences about growth using age and length data from only those fish that were actually aged (aged‐only method). Alternatively, growth may be evaluated by employing a method of incorporating the length‐stratified aged subsample with information from the entire sample of fish collected, such as the weighted‐mean and assigned‐age methods, which are commonly used…Read more with free access 

Pacific salmon hatcheries support important commercial fisheries for Pink Salmon Oncorhynchus gorbuscha and Chum Salmon O. keta in Prince William Sound (PWS), Alaska. State policy mandates that hatchery‐produced fish must not negatively impact natural populations, which can occur during mixed fisheries and via ecological and genetic interactions. Therefore, we quantified the spatial and temporal overlap of natural‐ and hatchery‐origin salmon…Read more with open access

Projected intensification of drought as a result of climate change may reduce the capacity of streams to rear fish, exacerbating the challenge of recovering salmonid populations listed under the Endangered Species Act. Without management intervention, some stocks will likely go extinct as stream drying and fragmentation reduce juvenile survival to unsustainable levels. To offset drought‐related mortality, fish rescue programs have proliferated, whereby juvenile salmonids are captured and transferred to off‐site rearing facilities….Read more with free access