Results 11 to 20 of about 78 (72)

Modeling the interaction between salmon management and consumption by coastal brown bears

Ecosphere, Volume 14, Issue 5, May 2023., 2023
Abstract Harvest management policy for species with strong trophic connections can reverberate through food webs and cause unintended consequences, such as altering the abundance of a harvested species' predators or prey. Pacific salmon (Oncorhynchus spp.), a key food for many predators and an economically valuable harvested species, is generally ...
William W. Deacy, William B. Leacock, Jonathan B. Armstrong   +2 more
wiley   +1 more source

Y‐chromosome haplotypes are associated with variation in size and age at maturity in male Chinook salmon

Evolutionary Applications, Volume 13, Issue 10, Page 2791-2806, December 2020., 2020
Abstract Variation in size and age at maturity is an important component of life history that is influenced by both environmental and genetic factors. In salmonids, large size confers a direct reproductive advantage through increased fecundity and egg quality in females, while larger males gain a reproductive advantage by monopolizing access to females.
Garrett J. McKinney, James E. Seeb, Carita E. Pascal, Daniel E. Schindler, Sara E. Gilk‐Baumer, Lisa W. Seeb   +5 more
wiley   +1 more source

Recruitment variation disrupts the stability of alternative life histories in an exploited salmon population

Evolutionary Applications, Volume 12, Issue 2, Page 214-229, February 2019., 2019
Abstract Males of many fish species exhibit alternative reproductive tactics, which can influence the maturation schedules, fishery productivity, and resilience to harvest of exploited populations. While alternative mating phenotypes can persist in stable equilibria through frequency‐dependent selection, shifts in tactic frequencies have been observed ...
Lukas B. DeFilippo, Daniel E. Schindler, Jan Ohlberger, Kevin L. Schaberg, Matt Birch Foster, Darin Ruhl, André E. Punt   +6 more
wiley   +1 more source

Variation in spawning phenology within salmon populations influences landscape‐level patterns of brown bear activity

Ecosphere, Volume 10, Issue 1, January 2019., 2019
Abstract Animal consumers track spatial variation in resource phenology (i.e., resource waves) to prolong their access to ephemeral foods. While recent work has revealed how animals move across landscapes to exploit phenological variation among discrete foraging patches, much less is known about how variation nested within patches influences the ...
William W. Deacy, William B. Leacock, Jack A. Stanford, Jonathan B. Armstrong   +3 more
wiley   +1 more source

Population coherence and environmental impacts across spatial scales: a case study of Chinook salmon

Ecosphere, Volume 7, Issue 4, April 2016., 2016
Abstract A central problem in understanding how species respond to global change is in parsing the effects of local drivers of population dynamics from regional and global drivers that are shared among populations. Management and conservation efforts that typically focus on a particular population would benefit greatly from being able to separate the ...
Jan Ohlberger, Mark D. Scheuerell, Daniel E. Schindler, D. P. C. Peters   +3 more
wiley   +1 more source

Tracking Long‐Term Trends in Sockeye Salmon (Oncorhynchus nerka) Population Dynamics Using Sterol and Stanol Biomarkers in Lake Sediments

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 9, September 2025.
Abstract We analyzed biomarkers, including sterols, stanols, and δ15N, in sediment cores from lakes with well‐documented sockeye salmon return histories. Our goal was to improve estimates of past changes in salmon escapement, that is, the population that return to their freshwater nursery lakes, inferred using sediment biogeochemical markers ...
D. Dagodzo, D. C. Eickmeyer, L. E. Kimpe, D. T. Selbie, J. P. Smol, J. M. Blais   +5 more
wiley   +1 more source

Historical and contemporary processes driving the origin and structure of an admixed population within a contact zone between subspecies of a north temperate diadromous fish

Molecular Ecology, Volume 33, Issue 15, August 2024.
Abstract Hybridization between divergent lineages can result in losses of distinct evolutionary taxa. Alternatively, hybridization can lead to increased genetic variability that may fuel local adaptation and the generation of novel traits and/or taxa.
Amy Liu, Armando Geraldes, Eric B. Taylor   +2 more
wiley   +1 more source

An Examination of the Wrangel Island Sea Ice Thickness Dipole

Journal of Geophysical Research: Oceans, Volume 129, Issue 6, June 2024.
Abstract The Beaufort Sea High is a high‐pressure system located in the Beaufort Sea that influences ocean circulation in the western Arctic known as the Beaufort Gyre. Wrangel Island, located in the western Chukchi Sea, typically experiences easterly sea ice motion due to the Beaufort Gyre.
Spenser Ross, G. W. K. Moore, Kristin L. Laidre   +2 more
wiley   +1 more source

Turkish Period Artifacts in Old Taraz City (Kazakhstan)

, 2022
Kazakistanın güneyinde, Talas vadisinde yer alan ve verimli toprakları ile zengin su kaynakları sebebiyle tarih öncesi dönemlerden itibaren çok sayıda önemli kültürlere ev sahipliği yapan Taraz şehri aynı zamanda doğu ve batıyı birbirine bağlayan Büyük ...
Baibugunov, Beibit
core  

TRIBAL HIERARCHY AND STATUS OF TRIBAL ALLIANCES IN THE IMPERIAL SYSTEMS OF TURK KHAGANATES (MID 6TH CENTURY – EARLY 8TH CENTURY)

Вестник Кемеровского государственного университета, 2015
The paper deals with some issues of ethno-political structure of Turk nomadic empires of middle 6th – the first half of the 8th century. The purpose of the work is to recreate the tribal hierarchy in Turk Khaganates, to determine the status of specific ...
S. A. Vasyutin
doaj