Results 61 to 70 of about 576 (154)

Addressing biases in sliding window analysis gives new insight into the response of parturition date to weather in a wild mammal

Oikos, Volume 2026, Issue 3, March 2026.
Animal breeding phenology in temperate and high latitude regions is often predicted by weather variables, such as temperature. Much work on this topic has focused on taxonomic groups that employ adaptive plastic responses to annual variation in an environmental cue, with analytical approaches developed to determine when weather has an effect and the ...
Kirsty H. Macphie, Sean Morris, Alison Morris, Fiona E. Guinness, Timothy H. Clutton‐Brock, Loeske E. B. Kruuk, Josephine M. Pemberton   +6 more
wiley   +1 more source

Greater biomass from Arctic greening absorbs increased grazing pressure from a large herbivore

Arctic Science
Arctic warming is causing widespread “greening” of tundra ecosystems. What this means for plant–herbivore relations, including the grazing pressure herbivores exert on increasingly productive tundra ecosystems, is poorly understood.
Samantha P.H. Dwinnell, Leif Egil Loe, Ida F. Köhn, Steve D. Albon, Larissa T. Beumer, Åshild Ø. Pedersen, René van der Wal   +6 more
doaj   +1 more source

Rain more important than windchill for insulation loss in Svalbard reindeer fur

Rangifer, 2004
Heat transfer through dry and wet Svalbard reindeer (Rangifer tarandus platyrhynchus) summer and winter midback fur samples was studied in a wind tunnel.
Christine Cuyler, Nils A. Øritsland
doaj   +1 more source

Hunting, but not outdoor recreation, modulates behavioural tolerance to human disturbance in Alpine marmots Marmota marmota

Wildlife Biology, Volume 2026, Issue 2, March 2026.
Humans are often perceived as predators by free‐living animals, and thus, even non‐consumptive human activities such as outdoor recreation may trigger behavioural and physiological responses, often with negative consequences on individual fitness and population persistence.
Friederike Zenth, Chiara Giari, Elena Morocutti, Ilse Storch, Daniel T. Blumstein, Andrea Corradini, Davide Righetti, Dominik Trenkwalder, Luca Corlatti   +8 more
wiley   +1 more source

RUMEN MICROBIAL ADAPTATION TO FIBER DIGESTION IN SVALBARD REINDEER [PDF]

Canadian Journal of Animal Science, 1984
The dominant rumen microorganisms of the high-arctic reindeer from Svalbard (77–81°N) were characterized in summer and winter. Their in vitro fiber digesting ability and VFA production have been examined. It was determined that 74% of the bacteria isolated from animals shot in winter could digest fiber, and 30% in summer.
SVEIN DISCH MATHIESEN, ARNOLDUS SCHYTTE BLIX, COLIN G. ORPIN   +2 more
openaire   +1 more source

Climate‐linked evolution and genetics in a warming Arctic

Ecological Monographs, Volume 96, Issue 1, February 2026.
Abstract Knowledge of evolutionary patterns and genetic variation across a species' range is important for determining conservation and management strategies. The Arctic is the fastest‐warming ecosystem on Earth and has already reached temperature increases not expected in the rest of the world until the end of the century.
L. Ruth Rivkin, Kiersten C. K. King, Jon Aars, Kristin L. Laidre, Alexandra Langwieder, David McGeachy, Levi Newediuk, Stephen D. Petersen, Nicholas Pilfold, Aryn P. Wilder, Geoff York, Evan S. Richardson, Colin J. Garroway   +12 more
wiley   +1 more source

Cratering behaviour and faecal C:N ratio in relation to seasonal snowpack characteristics in a High-Arctic ungulate

Polar Research, 2017
Snow and ice determine winter forage availability for Arctic herbivores. Winter precipitation is anticipated to increase, and icing following warm spells and rain-on-snow (ROS) are likely to become more frequent. While this may reduce herbivore survival,
Larissa T. Beumer, Øystein Varpe, Brage B. Hansen   +2 more
doaj   +1 more source

Extreme events, trophic chain reactions, and shifts in phenotypic selection

Scientific Reports, 2023
Demographic consequences of rapid environmental change and extreme climatic events (ECEs) can cascade across trophic levels with evolutionary implications that have rarely been explored.
Kate Layton-Matthews, Stefan J. G. Vriend, Vidar Grøtan, Maarten J. J. E. Loonen, Bernt-Erik Sæther, Eva Fuglei, Brage Bremset Hansen   +6 more
doaj   +1 more source

Towards rainy high Arctic winters: How experimental icing and summer warming affect tundra plant phenology, productivity and reproduction

Journal of Ecology, Volume 114, Issue 1, January 2026.
Extreme rain‐on‐snow events forming basal‐ice can shape high Arctic plant communities as strongly as summer warming. Icing delays soil warming and early growth but compensatory responses follow, at the cost of reproduction. Summer warming offsets most icing impacts, enhancing growth and reversing phenological delays, though inflorescence remains ...
Mathilde Le Moullec, Anna‐Lena Hendel, Matteo Petit Bon, Ingibjörg Svala Jónsdóttir, Øystein Varpe, René van der Wal, Larissa Teresa Beumer, Kate Layton‐Matthews, Ketil Isaksen, Brage Bremset Hansen   +9 more
wiley   +1 more source

Seasonal timing and preceding moisture regime mediate impacts of heavy rainfall events on High Arctic plant growth

Journal of Ecology, Volume 114, Issue 1, January 2026.
Findings indicate that the impact of heavy rainfall events on plant growth in the High Arctic is mediated by seasonal timing and local moisture regimes. Late summer rainfall can extend the growing season for plants experiencing end‐of‐season water‐limitation by delaying onset of senescence.
Rúna Í. Magnússon, Mo A. Verhoeven, Simone I. Lang, Sil Schuuring, Manon van den Dolder, Christian Menheere, Juul Limpens   +6 more
wiley   +1 more source