ArticleNature communications2024
Polar bear energetic and behavioral strategies on land with implications for surviving the ice-free period.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Regulatory activity and evolutionary co-option of cis-regulatory elements underlying bear hibernation.Molecular biology and evolution · 2026Article
- Habitat Selection and Intrapopulation Spatial Segregation in an Arctic Top Predator at the Southern Limit of Its Range.Global change biology · 2026Article
- Body condition among Svalbard Polar bears Ursus maritimus during a period of rapid loss of sea ice.Scientific reports · 2026Article
- The effects of carnivory and herbivory on the energy balance of Arctic grizzly bears.Oecologia · 2025Article
- Homeostasis of glucose and lipid metabolism during physiological responses to a simulated hypoxic high altitude environment.Nature communications · 2025Article
- Model sensitivity limits attribution of greenhouse gas emissions to polar bear demographic rates.Scientific reports · 2025Article
- Reduced ATP turnover during hibernation in relaxed skeletal muscle.Nature communications · 2025Article
- Convergent gut microbial functional strategies drive energy metabolism adaptation across Ursidae species and challenge the uniqueness of giant panda.The ISME journal · 2025Article
- Temporal dynamics of polar bear (Conservation physiology · 2025Article
- Through the eyes of the Andean bear: Camera collar insights into the life of a threatened South American Ursid.Ecology and evolution · 2024Article
- Land-based foraging by polar bears reveals sexual conflict outside mating season.Scientific reports · 2024Article
- Article
- Telemetry without collars: performance of fur- and ear-mounted satellite tags for evaluating the movement and behaviour of polar bears.Animal biotelemetry · 2024Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
Declining Arctic sea ice is increasing polar bear land use. Polar bears on land are thought to minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE), diet, behavior, movement, and body composition changes of 20 different polar bears on land over 19-23 days from August to September (2019-2022) in Manitoba, Canada. Polar bears on land exhibited a 5.2-fold range in DEE and 19-fold range in activity, from hibernation-like DEEs to levels approaching active bears on the sea ice, including three individuals that made energetically demanding swims totaling 54-175 km. Bears consumed berries, vegetation, birds, bones, antlers, seal, and beluga. Beyond compensating for elevated DEE, there was little benefit from terrestrial foraging toward prolonging the predicted time to starvation, as 19 of 20 bears lost mass (0.4-1.7 kg•day
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