Results 41 to 50 of about 29,195 (221)
Size-related Hooking Mortality of Incidentally Caught Chinook Salmon, Oncorhynchus tshawytscha [PDF]
, 1989 Mortality associated with the incidental catch and release by commercial trollers of two size classes of chinook salmon, Oncorhynchus tshawytscha, was assessed. Observed cumulative mortality 4-6 days after hooking was 18.3 percent for sublegal-sizefish «
Celewycz, Adrian +3 more
core
A Tool for Prioritizing Gravel Augmentation Reaches for Sediment Starved Rivers
River Research and Applications, EarlyView.ABSTRACT Gravel augmentation is a widely used restoration technique used to improve habitat below dams, including salmonids spawning habitat. However, gravel augmentation can be cost‐prohibitive, and it is often unclear which stream segments have the highest potential to benefit spawning salmonids.
Patricia J. Wohner +2 more
wiley +1 more source
Knowledge and Management of Aquatic Ecosystems, 2012 Using stable isotope analyses of N and C we present preliminary evidence of marine-derived nutrients from introduced Chinook salmon (Oncorhynchus tshawytscha Walbaum) in stream food webs of Laguna Los Patos, NW Patagonia.
Arismendi I., Soto D.
doaj +1 more source
Cooperative artificial propagation programs for salmon and steelhead, 1995-1996 [PDF]
, 1998 Fifteen cooperative fish rearing and planting programs for salmon and steelhead were active from July 1, 1995 through June 30, 1996. For all programs, 134,213 steelhead trout,(Oncorhynchus mykiss), 7,742,577 chinook salmon,(~ tshawytscha),and 25,075 coho
Radford, Linda
core +1 more source
Transgenerational Marking of Chinook Salmon Otoliths
, 2023 Various tagging methods are currently applied in fisheries science for monitoring and managing fish populations worldwide. Tagging technology can often be limited by characteristics of the target species and can come with side effects such as lowering individual fitness.
openaire +2 more sources
River Research and Applications, EarlyView.ABSTRACT Regulated rivers represent complex hydrological systems where groundwater–surface water interactions are governed by natural conditions and human interventions. This study investigates the spatiotemporal dynamics of groundwater–surface water exchanges in the Nechako River, British Columbia (Canada), using numerical simulations.
Milad Fakhari +4 more
wiley +1 more source
Evolutionary Applications, 2021 Conserving life‐history variation is a stated goal of many management programs, but the most effective means by which to accomplish this are often far from clear.
Stuart C. Willis +4 more
doaj +1 more source
Distribution and Abundance of Juvenile Salmonids off Oregon and Washington, 1981-1985 [PDF]
, 1990 This report is a summary of the results of 883 purse seine sets made for juvenile salmonids during 15 cruises off the coasts of Oregon and Washington during the springs and summers of 1981-1985.
Fisher, Joseph P., Pearch, William G.
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Microhaplotype Methods Enable Relationship Inference in a Bottlenecked Mammalian Species
Animal Conservation, EarlyView.Northern elephant seals (Mirounga angustirostris) are among the most genetically depauperate mammals in the world. A near‐total population bottleneck in the 19th century, coupled with the breeding system of extreme polygyny, has challenged efforts to estimate individual reproductive success with genetic methods.
Keith M. Hernandez +6 more
wiley +1 more source
Ecosphere, 2021 Recovering small, endangered populations is challenging, especially if the drivers of declines are not well understood. While infrequent births and deaths may be important to the outlook of endangered populations, small sample sizes confound studies ...
Joshua D. Stewart +6 more
doaj +1 more source