Results 51 to 60 of about 6,162 (273)

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.

Frontiers 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, Michael L. McHenry, Keith Denton, Joseph H. Anderson, Martin C. Liermann, Roger J. Peters, John R. McMillan, Samuel J. Brenkman, Todd R. Bennett, Jeffrey J. Duda, Karrie M. Hanson   +10 more
doaj   +1 more source

Spatiotemporal distribution of Ceratonova shasta in the lower Columbia River Basin and effects of exposure on survival of juvenile chum salmon Oncorhynchus keta.

PLoS ONE, 2022
In the Columbia River Basin (CRB), USA, anthropogenic factors ranging from dam construction to land use changes have modified riverine flow and temperature regimes and degraded salmon habitat.
Kristen Homel, Julie D Alexander
doaj   +1 more source

To release or not to release? A call for caution when considering wildlife reintroductions

Conservation Science and Practice, EarlyView.
Conservation efforts often focus on flagship species and short‐term measures such as captive breeding and reintroductions, yet these approaches may benefit from being complemented with a broader view of the factors that influence long‐term recovery. Using examples from management programs in the Iberian Peninsula, we highlight the value of considering ...
Héctor Ruiz‐Villar, José María Gil‐Sánchez, David Álvarez, Andrés Ordiz   +3 more
wiley   +1 more source

Results of long-term biological monitoring of pacific salmons in the hatcheries of Kamchatsky Krai

Известия ТИНРО, 2015
The following biological problems of the pacific salmons cultivation in Kamchatka are considered on the base of long-term monitoring data (2001-2013): 1) dynamics of cultivated salmons abundance in the water bodies of salmon hatcheries; 2) salmon otolith
Alexander V. Bugaev, Nadezhda A. Rastyagaeva, Natalya N. Romadenkova, Marina A. Kudzina, Denis A. Davidyuk, Tatyana V. Gavruseva, Elena A. Ustimenko, Elena V. Bochkova, Evgeny G. Pogodaev   +8 more
doaj   +1 more source

Nez Perce Tribal Hatchery Program : Draft Environmental Impact Statement Summary. [PDF]

, 1996
This summary gives the major points of the Draft Environmental Impact Statement (EIS) prepared for the Nez Perce Tribal Hatchery by the Nez Perce Tribe (NPT), the Bonneville Power Administration (BPA), the Bureau of Indian Affairs (BIA), and other ...
United States. Bonneville Power Administration., Nez Perce Tribal Hatchery (Idaho)   +1 more
core   +1 more source

Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye (Sander vitreus)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye (Sander vitreus) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to
Justin M. Sturtz, Benjamin J. Schall, Matthew J. Ward, Cody E. Treft, Steven R. Chipps, Christopher A. Cheek   +5 more
wiley   +1 more source

Comparison of infectious agents detected from hatchery and wild juvenile Coho salmon in British Columbia, 2008-2018.

PLoS ONE, 2019
Infectious diseases are potential contributors to decline in Coho salmon (Oncorhynchus kisutch) populations. Although pathogens are theoretically considered to pose higher risk in high-density rearing environments like hatcheries, there is no direct ...
Omid Nekouei, Raphael Vanderstichel, Karia H Kaukinen, Krishna Thakur, Tobi Ming, David A Patterson, Marc Trudel, Chrys Neville, Kristina M Miller   +8 more
doaj   +1 more source

Phenotypic divergence between hatchery pink and coho salmon and their wild counterparts [PDF]

, 2023
Thesis (M.S.) University of Alaska Fairbanks, 2023Interbreeding between hatchery and wild Pacific salmon (Oncorhynchus spp.) is an ongoing management concern, particularly when hatchery Pacific salmon possess divergent phenotypes.
Reich, Alexandra G.
core  

Genetic and Ecological Management of Pacific Salmon Fisheries for the 21st Century

Fisheries Management and Ecology, EarlyView.
ABSTRACT Based on ecological adaptation theory, tremendous effort is being spent on measures that are eliminating salmon hatcheries and fishing opportunities with the intention of protecting wild runs deemed to be of particular genetic importance to the survival of the species.
Randall E. Brummett, Ian G. Cowx, Devin M. Bartley   +2 more
wiley   +1 more source

Age and length composition of Columbia Basin chinook, sockeye, and coho salmon at Bonneville Dam in 2001 [PDF]

, 2002
In 2001, representative samples of adult Columbia Basin chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho salmon (O. kisutch) populations at Bonneville Dam were collected.
Fryer, Jeffrey K., Kelsey, Denise A.
core