Results 21 to 30 of about 17,526 (201)

Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem. [PDF]

open access: yes, 2019
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need to account for geographical patterns in traits sensitive to climate change, as well as climate threats to species-level ...
Beechie, Tim   +24 more
core   +1 more source

Increasing objectivity associated with anadromous fish redd identification using a discriminant function analysis

open access: yesFrontiers in Environmental Science, 2022
Many fish species reproduce by creating nests (redds) in alluvial stream gravels, which can be used to track population trends. However, temporal and spatial overlap across multiple redd-building species can hinder redd species classification.
Kirsten Sellheim   +3 more
doaj   +1 more source

Steelhead (Oncorhynchus mykiss) lineages and sexes show variable patterns of association of adult migration timing and age‐at‐maturity traits with two genomic regions

open access: yesEvolutionary Applications, 2020
As life history diversity plays a critical role in supporting the resilience of exploited populations, understanding the genetic basis of those life history variations is important for conservation management.
Stuart C. Willis   +6 more
doaj   +1 more source

How riparian and floodplain restoration modify the effects of increasing temperature on adult salmon spawner abundance in the Chehalis River, WA

open access: yesPLoS ONE, 2022
Stream temperatures in the Pacific Northwest are projected to increase with climate change, placing additional stress on cold-water salmonids. We modeled the potential impact of increased stream temperatures on four anadromous salmonid populations in the
Caleb B. Fogel   +7 more
doaj   +2 more sources

Effects of dietary lipid and air replenisher on the growth and lipid deposition of steelhead trout (Oncorhynchus mykiss) confined underwater

open access: yesAquaculture Reports, 2023
In this study, we investigated the effects of dietary lipids (DL) on the growth and lipid deposition of steelhead trout (Oncorhynchus mykiss) confined underwater using various equipment.
Jianfei Yu   +5 more
doaj   +1 more source

The effect of hatchery release strategy on marine migratory behaviour and apparent survival of Seymour River steelhead smolts (Oncorhynchus mykiss). [PDF]

open access: yesPLoS ONE, 2011
Early marine migratory behaviour and apparent survival of hatchery-reared Seymour River steelhead (Oncorhynchus mykiss) smolts was examined over a four year period (2006-2009) to assess the impact of various management strategies on improving early ...
Shannon Balfry   +4 more
doaj   +1 more source

Size-conditional smolting and the response of Carmel River steelhead to two decades of conservation efforts.

open access: yesPLoS ONE, 2017
Threshold effects are common in ecosystems and can generate counterintuitive outcomes in management interventions. A threshold effect proposed for steelhead trout (Oncorhynchus mykiss) is size-conditional smolting and marine survival.
Juan Lopez Arriaza   +3 more
doaj   +1 more source

Steelhead Supplementation Studies; Steelhead Supplementation in Idaho Rivers, Annual Report 2002. [PDF]

open access: yes, 2003
The Steelhead Supplementation Study (SSS) has two broad objectives: (1) investigate the feasibility of supplementing depressed wild and natural steelhead populations using hatchery populations, and (2) describe the basic life history and genetic characteristics of wild and natural steelhead populations in the Salmon and Clearwater Basins.
openaire   +2 more sources

Initial responses of Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) to removal of two dams on the Elwha River, Washington State, U.S.A.

open access: yesFrontiers in Ecology and Evolution
Large dam removal is being used to restore river systems, but questions remain regarding their outcomes. We examine how the removal of two large dams in the Elwha River, coupled with hatchery production and fishing closures, affected population ...
George R. Pess   +10 more
doaj   +1 more source

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