Results 61 to 70 of about 440 (162)

Community structure and range shifts in Arctic marine fish under climate change

Ecography, Volume 2026, Issue 1, January 2026.
Arctic marine ecosystems are rapidly transforming due to climate change. Warming temperatures and shrinking sea ice are enabling boreal fish to expand northward, possibly disturbing cold‐adapted Arctic species assemblages. Species range shifts have been documented in the Bering and Barents Seas, raising concerns about ecosystem restructuring.
Virginie Marques, Fabian Fopp, Melissa Jaquier, Kari E. Ellingsen, Nigel Yoccoz, Meret Jucker, Camille Albouy, Loïc Pellissier   +7 more
wiley   +1 more source

Antioxidant defenses in polar cod (Boreogadus saida) and responsiveness toward dietary crude oil exposure [PDF]

Marine Environmental Research, 2017
Increasing anthropogenic activities in the Arctic pose the risk for accidental oil spills but our knowledge of ecotoxicological effects is still limited for Arctic organisms. This study aimed to provide insights in baseline levels of antioxidants in polar cod (Boreogadus saida) from different Arctic locations and investigate the susceptibility of this ...
Ireen Vieweg, Maura Benedetti, Ilaria Lanzoni, Francesco Regoli, Jasmine Nahrgang   +4 more
openaire   +3 more sources

Arctic‐breeding black‐legged kittiwakes show individual variation in foraging responses to glacial conditions without consequences for reproductive output

Oikos, Volume 2026, Issue 1, January 2026.
Behavioural plasticity is likely to influence how individuals continue to access resources under rapid climate change. Plasticity will be particularly important at highly dynamic, prey‐rich foraging areas such as upwelling fronts of marine‐terminating glaciers in the high Arctic, where profitability varies significantly across space and time ...
Frederick C. Mckendrick, Sébastien Descamps, Kathryn E. Arnold, Stéphanie Jenouvrier, Stephanie M. Harris, Philip Bertrand, Jack Kohler, Ward van Pelt, Olivier Chastel, William Jouanneau, Don‐Jean Léandri‐Breton, Pierre Blévin, Natasha E. Gillies, Haakon Hop, Philipp Assmy, Allison Bailey, Anette Wold, Hallvard Strøm, Samantha C. Patrick   +18 more
wiley   +1 more source

Status and biology of harbour seals (Phoca vitulina) in Svalbard

NAMMCO Scientific Publications, 2010
Harbour seals in Svalbard are the northernmost population of this species. This small population is comprised of ca. 1,000 individuals, most of which reside along the west coast of Prins Karls Forland (78°20’N). Satellite tracking studies have shown that
Christian Lydersen, Kit M Kovacs
doaj   +1 more source

Ringed Seal (Pusa hispida) Abundance in Isfjorden, Svalbard, After 20‐Years of Climate Change and a Concomitant Survey Hiatus

Marine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT Ringed seals (Pusa hispida) in Svalbard, Norway, are suspected to be declining due to a significant reduction in land‐fast sea ice, which serves as an essential breeding habitat, but were last surveyed in 2002. We address this data gap by conducting Uncrewed Aerial Systems (UAS) aerial surveys throughout Isfjorden (including adjacent small ...
Marc Rams i Rios, Kit M. Kovacs, Christian Lydersen, Rolf Anker Ims, Andrew Lowther   +4 more
wiley   +1 more source

Intra‐species differences in impacts of climate change: A case study of the hooded seal (Cystophora cristata)

Ecosphere, Volume 16, Issue 12, December 2025.
Abstract The Arctic is warming nearly four times faster than the global average, but the rate of change is not uniform across the region. Wide‐ranging Arctic species are exposed to variable environmental conditions across their range, but it remains unclear how different climate change regimes are affecting populations within the same species that have
Jade Vacquié‐Garcia, Kit M. Kovacs, Christian Lydersen, Arnoldus S. Blix, Lars P. Folkow, Tore Haug, Martin Biuw, Marianna Chimienti, Jérôme Spitz, Tiphaine Jeanniard du Dot   +9 more
wiley   +1 more source

Developmental Patterns of Hepatic Peroxisome Proliferator‐Activated Receptor (PPAR) Expression in Xenopus laevis and Response to Pharmaceutical Agonists During Metamorphic Climax

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 343, Issue 10, Page 1191-1204, December 2025.
ABSTRACT Peroxisome proliferator‐activated receptors (PPAR) are master transcriptional regulators that maintain metabolic homeostasis in vertebrates. Amphibians are often exposed to endocrine disrupting compounds (EDCs) that could dysregulate lipid metabolism.
Anna Bushong, Tyler D. Hoskins, Meredith Scherer, Maria S. Sepúlveda   +3 more
wiley   +1 more source

Patterns of summer ichthyoplankton distribution, including invasive species, in the Bering and Chukchi Seas

Frontiers in Marine Science
A multidisciplinary survey was carried out in the Pacific Arctic and sub-Arctic regions of the North Pacific Ocean on the Korean icebreaking research vessel Araon.
Sung Hoon Kim, Wuju Son, Jaeill Yoo, Kyoung-Ho Cho, Taewook Park, Eun Jin Yang, Sung-Ho Kang, Hyoung Sul La, Hyoung Sul La   +8 more
doaj   +1 more source

Diet and feeding observations from an unusual beluga harvest in 2014 near Ulukhaktok, Northwest Territories, Canada

Arctic Science, 2018
The Eastern Beaufort Sea (EBS) beluga (Delphinapterus leucas) population are an important traditional food for the Inuit of the Inuvialuit Settlement Region, Northwest Territories (NT) Canada.
Lisa L. Loseto, Jasmine D. Brewster, Sonja K. Ostertag, Kathleen Snow, Shannon A. MacPhee, Darcy G. McNicholl, Emily S. Choy, Carolina Giraldo, Claire A. Hornby   +8 more
doaj   +1 more source

The thick-billed murre (Uria lomvia) in Northwest Greenland (Avanersuaq) relies on Arctic cod (Boreogadus saida) in a changing climate

Arctic Science
Considering seabirds as indicators of environmental change, we compared thick-billed murre (Uria lomvia (Linnaeus, 1758)) adult and chick diet in the North Water polynya region, NW Greenland, during 1997 and 2023.
Knud Falk, Flemming Ravn Merkel, Myrthe Bergsma, Kasper Lambert Johansen, Kaj Kampp, Aili Lage Labansen, Anders Mosbech, Maasannguaq Oshima, Caroline Bouchard   +8 more
doaj   +1 more source