Results 71 to 80 of about 142,780 (306)
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
PLoS ONE, 2018 Rising river temperatures in western North America have increased the energetic costs of migration and the risk of premature mortality in many Pacific salmon (Oncorhynchus spp.) populations.
M. Keefer +5 more
semanticscholar +1 more source
Fisheries Management and Ecology, EarlyView.ABSTRACT Light can be used to deter bycatch from fishing nets, but few studies have aimed to quantify how species view and respond to light. Here, we used visual models to predict how target (plaice Pleuronectes platessa) and bycatch (small‐spotted catshark Scyliorhinus canicular and undersized skates, Raja spp) species, captured in mixed demersal ...
Jasmine Somerville +2 more
wiley +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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Demographic changes in Chinook salmon across the Northeast Pacific Ocean
, 2018 The demographic structure of populations is affected by life history strategies and how these interact with natural and anthropogenic factors such as exploitation, climate change, and biotic interactions. Previous work suggests that the mean size and age
J. Ohlberger +3 more
semanticscholar +1 more source
Fisheries Management and Ecology, EarlyView.ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens +2 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
Modeling the effect of striped bass (Morone saxatilis) on the population viability of Sacramento River winter-run chinook salmon (Onchorhynchus tshawytscha) [PDF]
, 2003 We estimated the impact of striped bass (Morone saxatilis) predation on winter-run chinook salmon (Oncorhynchus tshawytscha) with a Bayesian population dynamics model using striped bass and winter-run chinook salmon population abundance data.
Lindley, Steven T., Mohr, Michael S.
core