...-term health of dovekie populations globally by improving existing models (e.g. Clairbaux et al., 2019 ). Despite rapid environmental changes in the Arctic, DEE estimates for nesting dovekies in 2017 and 2018 in East Greenland were comparable to previous estimates going back ∼30 years for birds...

... with continuous summer light, daily sleep duration is reduced, particularly in breeding birds. The effect of an anti-narcolepsy drug (modafinil) to putatively extend wakefulness was examined in two species of closely related arctic-breeding passerine birds: Lapland longspurs ( Calcarius lapponicus ) and snow...

...Simon Bahrndorff; Jannik M. S. Lauritzen; Mathias H. Sørensen; Natasja K. Noer; Torsten N. Kristensen ABSTRACT Terrestrial arthropods in the Arctic and Antarctic are exposed to extreme and variable temperatures, and climate change is predicted to be especially pronounced in these regions. Available...

...Anthony M. Pagano; Terrie M. Williams ABSTRACT Rapid environmental changes in the Arctic are threatening the survival of marine species that rely on the predictable presence of the sea ice. Two Arctic marine mammal specialists, the polar bear ( Ursus maritimus ) and narwhal ( Monodon monoceros...

... consideration if climate change and increased exploitation of the Arctic would alter pathogen communities at a pace outwith counter-adaption in wildlife. * Author for correspondence ( andreas.nord@biol.lu.se ) Competing interests The authors declare no competing or financial interests. 25 11...

... auditory data for a population of healthy wild odontocetes shows that belugas have sensitive hearing with limited hearing loss and thresholds that approach quiet ambient noise conditions. Noise Marine mammal Cetacean Odontocete Arctic Underwater hearing and sound production are of primary...

...Andreas Nord; Lars P. Folkow ABSTRACT Arctic homeotherms counter challenges at high latitudes using a combination of seasonal adjustments in pelage/plumage, fat deposition and intricate thermoregulatory adaptations. However, there are still gaps in our understanding of their thermal responses...

...Shawn R. Noren; Robert Suydam ABSTRACT Little is known about the postnatal development of the physiological characteristics that support breath-hold in cetaceans, despite their need to swim and dive at birth. Arctic species have the additional demand of avoiding entrapment while navigating under...

...Arnoldus Schytte Blix ABSTRACT This Review presents a broad overview of adaptations of truly Arctic and Antarctic mammals and birds to the challenges of polar life. The polar environment may be characterized by grisly cold, scarcity of food and darkness in winter, and lush conditions and continuous...

... in walruses enables estimates to be made of their aerobic dive limits and theoretical bottom times relative to age and dive depth. Odobenid Myoglobin Acid buffering Ontogeny Aerobic dive limit Arctic With continued human perturbation to the environment, it is becoming increasingly important...

...Jillian M. Sills; Brandon L. Southall; Colleen Reichmuth ABSTRACT Ringed seals ( Pusa hispida ) are semi-aquatic marine mammals with a circumpolar Arctic distribution. In this study, we investigate the amphibious hearing capabilities of ringed seals to provide auditory profiles for this species...

... Marine mammal Cetacean Odontocete Arctic Beluga whales, Delphinapterus leucas (Pallas 1776), are often found in turbid, coastal waters in northern latitudes where darkness can extend for many months. They depend upon sound for many important biological functions such as foraging, navigation...

...Jillian M. Sills; Brandon L. Southall; Colleen Reichmuth Spotted seals ( Phoca largha ) inhabit Arctic regions that are facing both rapid climate change and increasing industrialization. While little is known about their sensory capabilities, available knowledge suggests that spotted seals...

... INTERESTS No competing interests declared. 1 8 2012 6 12 2012 © 2013. 2013 Arctic energetics ptarmigan respirometry The metabolic cost of locomotion is a major contributor to the daily energy budget of terrestrial organisms, particularly birds, and is therefore...

... Elegans in the Arctic . Ecology 47 , 852 - 855 . Marshall N. B. ( 1953 ). Egg size in Arctic, Antarctic, and deep-sea fishes . Evolution 7 , 328 - 341 . McClain C. R. , Boyer A. G. ( 2009 ). Biodiversity and body size are linked across metazoans . Proc. R. Soc. Lond...

...G. M. MacDonald SUMMARY The levels of CO 2 in the atmosphere have already far exceeded values attained at any other time over at least the past 650,000 years. Temperature increases due to rising greenhouse gases will be amplified in Arctic and subarctic regions, and winter warming will be enhanced...

...Olga Kukal; Bernd Heinrich; John G. Duman ABSTRACT Larvae of the high arctic caterpillar, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) spent most (60%) of their time orienting towards the sun (i.e. basking) and only 20% feeding, primarily near midday. Larvae usually basked after...