The Clock Keeps Ticking: Circadian Rhythms of Free-Ranging Polar Bears

Entraining effects of variations in light spectral composition on the rest-activity rhythm of a nocturnal rodent

(2019) Melissa A. B. de Oliveira et al.   CHRONOBIOLOGY INTERNATIONAL

Den phenology and reproductive success of polar bears in a changing climate

(2018) Karyn D Rode et al.   JOURNAL OF MAMMALOGY

Circadian rhythmicity persists through the Polar night and midnight sun in Svalbard reindeer

(2018) Walter Arnold et al.   Scientific Reports

Evidence of intraspecific prey switching: stage-structured predation of polar bears on ringed seals

(2018) Jody R. Reimer et al.   OECOLOGIA

Entraining to the polar day: circadian rhythms in arctic ground squirrels

(2017) Cory T. Williams et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Collar temperature sensor data reveal long-term patterns in southern Beaufort Sea polar bear den distribution on pack ice and land

(2017) JW Olson et al.   MARINE ECOLOGY PROGRESS SERIES

Habitat degradation affects the summer activity of polar bears

(2017) Jasmine V. Ware et al.   OECOLOGIA

Collar temperature sensor data reveal long-term patterns in southern Beaufort Sea polar bear den distribution on pack ice and land

(2017) JW Olson et al.   MARINE ECOLOGY PROGRESS SERIES

Light color importance for circadian entrainment in a diurnal (Octodon degus) and a nocturnal (Rattus norvegicus) rodent

(2017) Maria Angeles Bonmati-Carrion et al.   Scientific Reports

The bear circadian clock doesn’t ‘sleep’ during winter dormancy

(2016) Heiko T. Jansen et al.   Frontiers in Zoology

Continuous activity and no cycling of clock genes in the Antarctic midge during the polar summer

(2015) Alena Kobelkova et al.   JOURNAL OF INSECT PHYSIOLOGY

Behavior and activity budgets of wild breeding polar bears (Ursus maritimus)

(2015) Ian Stirling et al.   MARINE MAMMAL SCIENCE

Persistence, Entrainment, and Function of Circadian Rhythms in Polar Vertebrates

(2015) Cory T. Williams et al.   PHYSIOLOGY

Increased Land Use by Chukchi Sea Polar Bears in Relation to Changing Sea Ice Conditions

(2015) Karyn D. Rode et al.   PLoS One

Colour As a Signal for Entraining the Mammalian Circadian Clock

(2015) Lauren Walmsley et al.   PLOS BIOLOGY

Population Genomics Reveal Recent Speciation and Rapid Evolutionary Adaptation in Polar Bears

(2014) Shiping Liu et al.   CELL

An experimental investigation of chemical communication in the polar bear

(2014) M. A. Owen et al.   JOURNAL OF ZOOLOGY

Activity Patterns of Eurasian Lynx Are Modulated by Light Regime and Individual Traits over a Wide Latitudinal Range

(2014) Marco Heurich et al.   PLoS One

Artificial Polychromatic Light Affects Growth and Physiology in Chicks

(2014) Jinming Pan et al.   PLoS One

Effects of capturing and collaring on polar bears: findings from long-term research on the southern Beaufort Sea population

(2014) Karyn D. Rode et al.   WILDLIFE RESEARCH

Temporal niche switching by grizzly bears but not American black bears in Yellowstone National Park

(2013) Jennifer K. Fortin et al.   JOURNAL OF MAMMALOGY

Animal activity around the clock with no overt circadian rhythms: patterns, mechanisms and adaptive value

(2013) G. Bloch et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds

(2013) S. S. Steiger et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Temporal organization of activity in the brown bear (Ursus arctos): roles of circadian rhythms, light, and food entrainment

(2012) Jasmine V. Ware et al.   AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY

Melanopsin-Based Brightness Discrimination in Mice and Humans

(2012) Timothy M. Brown et al.   CURRENT BIOLOGY

Keeping Time Under the Midnight Sun: Behavioral and Plasma Melatonin Profiles of Free-Living Lapland Longspurs (Calcarius lapponicus) During the Arctic Summer

(2012) Noah T. Ashley et al.   Journal of Experimental Zoology Part A-Ecological Genetics and Physiology

Sex differences in torpor patterns during natural hibernation in golden-mantled ground squirrels (Callospermophilus lateralis)

(2012) Jessica E. Healy et al.   JOURNAL OF MAMMALOGY

Daily body temperature rhythms persist under the midnight sun but are absent during hibernation in free-living arctic ground squirrels

(2011) C. T. Williams et al.   Biology Letters

Consequences of long-distance swimming and travel over deep-water pack ice for a female polar bear during a year of extreme sea ice retreat

(2011) George M. Durner et al.   POLAR BIOLOGY

Intrinsically photosensitive retinal ganglion cells: many subtypes, diverse functions

(2011) Tiffany M. Schmidt et al.   TRENDS IN NEUROSCIENCES

Bumblebee foraging rhythms under the midnight sun measured with radiofrequency identification

(2010) Ralph J Stelzer et al.   BMC BIOLOGY

A Circadian Clock Is Not Required in an Arctic Mammal

(2010) Weiqun Lu et al.   CURRENT BIOLOGY

Jaguar and puma activity patterns in relation to their main prey

(2010) Bart J. Harmsen et al.   MAMMALIAN BIOLOGY

Physiology of Circadian Entrainment

(2010) Diego A. Golombek et al.   PHYSIOLOGICAL REVIEWS

Seasonal home ranges and fidelity to breeding sites among ringed seals

(2010) Brendan P. Kelly et al.   POLAR BIOLOGY

Impact assessment research: use and misuse of habituation, sensitisation and tolerance in describing wildlife responses to anthropogenic stimuli

(2009) L Bejder et al.   MARINE ECOLOGY PROGRESS SERIES

Antennal Circadian Clocks Coordinate Sun Compass Orientation in Migratory Monarch Butterflies

(2009) C. Merlin et al.   SCIENCE

POLAR BEAR DIETS AND ARCTIC MARINE FOOD WEBS: INSIGHTS FROM FATTY ACID ANALYSIS

(2008) Gregory W. Thiemann et al.   ECOLOGICAL MONOGRAPHS

Daily rhythmicity and hibernation in the Anatolian ground squirrel under natural and laboratory conditions

(2008) Mutlu Kart Gür et al.   JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMIC AND ENVIRONMENTAL PHYSIOLOGY

The reproductive tactics and activity patterns of solitary carnivores: the Iriomote cat

(2008) Krzysztof Schmidt et al.   JOURNAL OF ETHOLOGY