Results 31 to 40 of about 29,195 (221)

Modeling timing and size of juvenile Chinook salmon out-migrants at three Elwha River rotary screw traps: a window into early life history post dam removal

Frontiers in Ecology and Evolution, 2023
Chinook salmon (Oncorhynchus tshawytscha) populations express diverse early life history pathways that increase habitat utilization and demographic resiliency.
Martin C. Liermann, Aimee H. Fullerton, George R. Pess, Joseph H. Anderson, Sarah A. Morley, Michael L. McHenry, mcKenzi N. Taylor, Justin Stapleton, Mel Elofson, Randall E. McCoy, Todd R. Bennett   +10 more
doaj   +1 more source

Increased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha.

PLoS ONE, 2018
The Columbia River and its tributaries provide essential spawning and rearing habitat for many salmonid species, including Chinook salmon (Oncorhynchus tshawytscha).
Bobbi M Johnson, Brian M Kemp, Gary H Thorgaard   +2 more
doaj   +1 more source

How Does Restored Habitat For Chinook Salmon ( Oncorhynchus Tshawytscha ) In The Merced River In California Compare With Other Chinook Streams? [PDF]

, 2012
The amount of time and money spent on restoring rivers for declining populations of salmon has grown substantially in recent decades. But despite the infusion of resources, many studies suggest that salmon populations are continuing to decline, leading ...
Albertson, L. K., Cardinale, B. J., Harrison, L. R., Koenig, L. E., Lewis, B. L., Zeug, S. C.   +5 more
core   +1 more source

Age and length composition of Columbia Basin chinook, sockeye, and coho salmon at Bonneville Dam in 2002 [PDF]

, 2002
In 2002, representative samples of migrating Columbia Basin chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho salmon (O. kisutch) adult populations were collected at Bonneville Dam.
Fryer, Jeffrey K., Kelsey, Denise A.
core   +1 more source

Dam It, I’m Stranded: Evaluating Fish Stranding Downstream of Two Hydropeaking Dams in Northern Ontario

River Research and Applications, EarlyView.
ABSTRACT Globally, there has been an increase in the development and use of hydropower to produce energy. Hydropeaking is an operating regime that is used to meet real‐time energy demands; however, daily fluctuations in flows may result in fish becoming stranded.
Raegan Davis, Steven J. Cooke, Karen E. Smokorowski   +2 more
wiley   +1 more source

Characterizing juvenile salmon predation risk during early marine residence.

PLoS ONE, 2021
Predation mortality can influence the distribution and abundance of fish populations. While predation is often assessed using direct observations of prey consumption, potential predation can be predicted from co-occurring predator and prey densities ...
Elizabeth M Phillips, John K Horne, Jeannette E Zamon   +2 more
doaj   +1 more source

Age and length composition of Columbia Basin chinook, sockeye, and coho salmon at Bonneville Dam in 2000 [PDF]

, 2001
In 2000, representative samples of adult Columbia Basin chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho salmon (O. kisutch), populations were collected at Bonneville Dam. Fish were trapped, anesthetized, sampled for scales and biological
Fryer, Jeffrey K., Kelsey, Denise A.
core  

The Transboundary Reach of the Columbia River: Cottonwood Colonization Followed Flow Moderation From the Columbia River Treaty Dams

River Research and Applications, EarlyView.
ABSTRACT The Columbia river provides the largest Pacific outflow in the Western Hemisphere and the greatest hydropower production of any North American river system. For hydropower generation and flood risk management, four massive water storage reservoirs followed the Columbia River Treaty between Canada and the United States, with three Canadian dams,
Colleen A. Phelan, Greg Utzig, Stewart B. Rood   +2 more
wiley   +1 more source

Remnant salmon life history diversity rediscovered in a highly compressed habitat

Evolutionary Applications
Chinook salmon (Oncorhynchus tshawytscha) display remarkable life history diversity, underpinning their ability to adapt to environmental change.
Sara A. Hugentobler, Anna M. Sturrock, Malte Willmes, Tasha Q. Thompson, Rachel C. Johnson, Flora Cordoleani, Natalie J. Stauffer‐Olsen, George Whitman, Mariah H. Meek   +8 more
doaj   +1 more source

Warming Ocean Conditions Relate to Increased Trophic Requirements of Threatened and Endangered Salmon.

PLoS ONE, 2015
The trophic habits, size and condition of yearling Chinook salmon (Oncorhynchus tshawytscha) caught early in their marine residence were examined during 19 survey years (1981-1985; 1998-2011). Juvenile salmon consumed distinct highly piscivorous diets in
Elizabeth A Daly, Richard D Brodeur
doaj   +1 more source