Results 91 to 100 of about 5,256 (251)

Hormonal sex reversal of rainbow trout (Oncorhynchus mykiss) by ethynylestradiol-17α (EE2) [PDF]

, 2011
Rainbow trout (Oncorhynchus mykiss) females grow larger and mature later than males, making all-female stocks economically advantageous. The objective of this research was to develop methods for the production of monosex populations of trout through the ...
Alizadeh, M., Hoseinzadeh Sahafi, H., Naji, T., Razmi, K.   +3 more
core  

Stream ecosystem responses to an extreme rainfall event across multiple catchments in southeast Alaska [PDF]

, 2015
Floods are a key component of the flow regime of many rivers and a major structuring force of stream communities. Climate change is predicted to increase the frequency of extreme rainfall (i.e. return intervals > 100 years) leading to extensive flooding,
Anderson, Barnes, Brown, Carrivick, Chapin, Collier, Death, Death, Death, Dole-Olivier, Engstrom, Fastie, Fritz, Gendron, Germer, Giere, Gjerløv, Hammer, Harvey, IPCC, Klaar, Kroon, Lake, Matthews, Matthews, McCabe, McMullen, Melo, Merritt, Mesa, Milly, Milner, Milner, Milner, Niemi, Olden, Olsen, Palmer, Poff, Robertson, Robertson, Robertson, Roni, Rosenfeld, Schoonover, Sipos, Smith, Stanley, Stover, Sueyoshi, Vieira, Yount   +51 more
core   +1 more source

Salmon watershed archetypes: A clustering of cumulative pressures and climate change

Ecological Solutions and Evidence, Volume 7, Issue 1, January–March 2026.
Cumulative effects of land‐use change and climate change are leading to biodiversity decline globally. Spatial analyses of cumulative pressures that distill complexity and provide actionable information for the management of cumulative pressures on vulnerable species are needed.
Spencer Dakin Kuiper, Jonathan W. Moore, Riley J. R. Finn, Nigel C. Sainsbury, Diane C. Whited, Tara G. Martin   +5 more
wiley   +1 more source

Pacific Salmon, Oncorhynchus spp., and the Definition of "Species" Under the Endangered Species Act [PDF]

, 1991
For purposes ofthe Endangered Species Act (ESA), a "species" is defined to include "any distinct population segment of any species of vertebrate fish or wildlife which interbreeds when mature. "Federal agencies charged with carrying out the provisions of
Waples, Robin S.
core  

The diverse diet of southern Alaska resident killer whales shifts across spatiotemporally distinct foraging hotspots

Ecosphere, Volume 16, Issue 12, December 2025.
Abstract Top predators influence ecological communities in part through the prey they consume. Prey preferences often shift throughout the year, reflecting both seasonal and geographic patterns of habitat use and the relative abundance of preferred prey species.
Hannah J. Myers, Daniel W. Olsen, Amy M. Van Cise, Abigail H. Wells, Kim M. Parsons, Craig O. Matkin   +5 more
wiley   +1 more source

Bridging Knowledge Systems and Perspectives to Inform Salmon Management and Research: A Kuskokwim River Case Study

Ecology and Evolution, Volume 15, Issue 10, October 2025.
This article bridges knowledge systems and perspectives from Indigenous and community knowledge holders and federal and state staff regarding the state of salmon management along the Kuskokwim River. This research provides mechanisms for improving salmon management with a focus on relationality, equitable knowledge sharing, and through strengthened ...
Janessa Esquible, Avery Hoffman, Destiny Ropati, Brooke Woods, Jessica Black, Rachel Donkersloot, Mike Williams, Wilson Justin, Justin Leon, Carrie Stevens, Craig Chythlook, Tazia Wagner, Courtney Carothers   +12 more
wiley   +1 more source

Effect of dietary estradiol-17β on growth performance, body composition and blood indices in Stellate sturgeon, Acipenser stellatus [PDF]

, 2014
This study was investigated the effects of dietary estradiol-17β (E2) on growth, body composition and blood indices in Acipenser stellatus. Fish (40.9 ± 1.1 g average initial weight; n = 60 per group) were fed with three different diets containing 0 ...
Ahmadnezhad, M., Falahatkar, B., Khara, H., Meknatkhah, B., Poursaeid, S.   +4 more
core  

Ecotoxicity Thresholds for Ametryn, Diuron, Hexazinone and Simazine in Fresh and Marine Waters [PDF]

, 2018
Triazine and urea herbicides are two groups of photosystem II inhibiting herbicides frequently detected in surface, ground and marine waters. Yet, there are few water quality guidelines for herbicides. Ecotoxicity thresholds (ETs) for ametryn, hexazinone
A Claver, A Hildebrandt, A Wightwick, D O’Brien, DA Hobbs, EC (European Commission), HJ Klimisch, IK Konstantinou, IK Konstantinou, JL Durda, JW Green, K Schneider, KR Solomon, KV Thomas, L Guzzella, M Gfrerer, M Muschal, M Ågerstrand, Michael St. J. Warne, MSJ Warne, MSJ Warne, Olivia King, P Mercurio, R Smith, RA Dam van, RA Smith, Rachael A. Smith, SM Peterson   +27 more
core   +1 more source

Active feeding of downstream migrating juvenile pink salmon (Oncorhynchus gorbuscha) revealed in a large Barents Sea river using diet and stable isotope analysis [PDF]

, 2023
Jaakko Erkinaro, Panu Orell, Mikko Kytökorpi, Jan‐Peter Pohjola, Michael Power   +4 more
openalex   +1 more source

Kyttyrälohi (Oncorhynchus gorbuscha) vieraslajina Pohjois-Euroopassa

, 2023
Tiivistelmä. Kyttyrälohi on pienikokoisin, mutta runsaslukuisin Oncorhynchus -suvun lajeista. Kyttyrälohella on erikoistunut kahden vuoden elinkierto, minkä seurauksena niille on muodostunut kaksi erillistä kantaa, jotka eivät lisäänny keskenään. Kyttyrälohen luontaiseen levinneisyysalueeseen kuuluu Tyynenvaltameren pohjoisosa ja siihen laskevat ...
openaire   +1 more source