Results 11 to 20 of about 1,769 (178)

Disentangling the contributions of density dependence and independence to population growth rates. [PDF]

open access: yesEcol Appl
Abstract Separately quantifying the effects of density‐dependent and density‐independent factors on vital rates is necessary to determine their contribution to changes in population growth rates and better inform management and conservation. State space modeling and recently developed transient life table response experiments (tLTRE) at the level of ...
Walters CL   +5 more
europepmc   +2 more sources

Sea louse infection of juvenile sockeye salmon in relation to marine salmon farms on Canada's west coast.

open access: yesPLoS ONE, 2011
BackgroundPathogens are growing threats to wildlife. The rapid growth of marine salmon farms over the past two decades has increased host abundance for pathogenic sea lice in coastal waters, and wild juvenile salmon swimming past farms are frequently ...
Michael H H Price   +5 more
doaj   +1 more source

Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019

open access: yesИзвестия ТИНРО, 2020
Data on quantitative distribution of early and late spawners of sockeye salmon in the Lake Nachikinskoye basin were collected in 2019 using quadcopter.
G. V. Zaporozhets   +2 more
doaj   +1 more source

Consequences of a sockeye salmon shortage for the brown bear in the basin of Lake Kurilskoe, Southern Kamchatka

open access: yesNature Conservation Research: Заповедная наука, 2021
We studied the behavioural ecology of Ursus arctos (hereinafter – brown bear or bear) in the basin of Lake Kurilskoe (Kamchatka Peninsula) in the summer and autumn of 2017–2018. The aim of this study was a comparative assessment of the behaviour of brown
Sergey A. Kolchin   +3 more
doaj   +1 more source

Spatial and ecological structure of the sockeye salmon population Oncorhynchus nerka of Kuril Lake [PDF]

open access: yesE3S Web of Conferences
This study examines the genetic structure of sockeye salmon populations in Kuril lake basin, focusing on the allelic frequencies of SNP loci that potentially carry an adaptive load. Our results reveal the division of sockeye salmon populations into three
Khrustaleva Anastasia
doaj   +1 more source

Meta-Analysis of Salmon Trophic Ecology Reveals Spatial and Interspecies Dynamics Across the North Pacific Ocean

open access: yesFrontiers in Marine Science, 2021
We examined spatial patterns in diet, trophic niche width and niche overlap for chum, pink and sockeye salmon across the North Pacific during 1959–1969. This is a baseline period before major hatchery enhancement occurred coinciding with a negative phase
Caroline Graham   +7 more
doaj   +1 more source

ON BIOLOGY OF SOCKEYE SALMON ONCORHYNCHGUS NERKA FROM THE ZHUPANOVA RIVER (EAST KAMCHATKA)

open access: yesИзвестия ТИНРО, 2018
Runs and escapements of sockeye salmon to the Zhupanova River have increased since 1985 with the run of 10.63 . 103 ind. instead of 1.45 . 103 ind. in 1960–1984, on average.
V. F. Bugaev, I. V. Tiller
doaj   +1 more source

Jellyfish in Pacific salmon food

open access: yesИзвестия ТИНРО, 2022
Ctenophores, hydroid jellyfish, appendicularians, salpas, and the pteropoda mollusk Clione limacina, conditionally combined into the group of “jellyfish”, are found in the food of all Pacific salmon — chum salmon, pink salmon, sockeye salmon, coho salmon
A. F. Volkov
doaj   +1 more source

Thermal sensitivity and flow-mediated migratory delays drive climate risk for coastal sockeye salmon

open access: yesFACETS, 2021
Climate change is subjecting aquatic species to increasing temperatures and shifting hydrologic conditions. Understanding how these changes affect individual survival can help guide conservation and management actions.
William I. Atlas   +8 more
doaj   +1 more source

Endangered wild salmon infected by newly discovered viruses

open access: yeseLife, 2019
The collapse of iconic, keystone populations of sockeye (Oncorhynchus nerka) and Chinook (Oncorhynchus tshawytscha) salmon in the Northeast Pacific is of great concern. It is thought that infectious disease may contribute to declines, but little is known
Gideon J Mordecai   +11 more
doaj   +1 more source

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