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Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic

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Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic. / Lone, Karen; Kovacs, Kit M.; Lydersen, Christian; Fedak, Mike; Andersen, Magnus; Lovell, Philip; Aars, Jon.

In: Scientific Reports, Vol. 8, 9677, 01.12.2018.

Research output: Contribution to journalArticle

Harvard

Lone, K, Kovacs, KM, Lydersen, C, Fedak, M, Andersen, M, Lovell, P & Aars, J 2018, 'Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic', Scientific Reports, vol. 8, 9677. https://doi.org/10.1038/s41598-018-27947-4

APA

Lone, K., Kovacs, K. M., Lydersen, C., Fedak, M., Andersen, M., Lovell, P., & Aars, J. (2018). Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic. Scientific Reports, 8, [9677]. https://doi.org/10.1038/s41598-018-27947-4

Vancouver

Lone K, Kovacs KM, Lydersen C, Fedak M, Andersen M, Lovell P et al. Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic. Scientific Reports. 2018 Dec 1;8. 9677. https://doi.org/10.1038/s41598-018-27947-4

Author

Lone, Karen ; Kovacs, Kit M. ; Lydersen, Christian ; Fedak, Mike ; Andersen, Magnus ; Lovell, Philip ; Aars, Jon. / Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic. In: Scientific Reports. 2018 ; Vol. 8.

Bibtex - Download

@article{749f6c0ab2bf4ae2b0cbc67769e08c7d,
title = "Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic",
abstract = "Polar bears are ice-associated marine mammals that are known to swim and dive, yet their aquatic behaviour is poorly documented. Reductions in Arctic sea ice are clearly a major threat to this species, but understanding polar bears' potential behavioural plasticity with respect to the ongoing changes requires knowledge of their swimming and diving skills. This study quantified time spent in water by adult female polar bears (n = 57) via deployment of various instruments bearing saltwater switches, and in some case pressure sensors (79 deployments, 64.8 bear-years of data). There were marked seasonal patterns in aquatic behaviour, with more time spent in the water during summer, when 75{\%} of the polar bears swam daily (May-July). Females with cubs-of-the-year spent less time in the water than other females from den emergence (April) until mid-summer, consistent with small cubs being vulnerable to hypothermia and drowning. Some bears undertook notable long-distance-swims. Dive depths up to 13.9 m were recorded, with dives ≥5 m being common. The considerable swimming and diving capacities of polar bears might provide them with tools to exploit aquatic environments previously not utilized. This is likely to be increasingly important to the species' survival in an Arctic with little or no persistent sea ice.",
author = "Karen Lone and Kovacs, {Kit M.} and Christian Lydersen and Mike Fedak and Magnus Andersen and Philip Lovell and Jon Aars",
note = "This study was funded by Statoil and the Norwegian Polar Institute’s ICE Centre. The Norwegian Polar Institute, WWF and various NRC projects have also contributed to the base-line capture-recapture programme that financed telemetric deployments.",
year = "2018",
month = "12",
day = "1",
doi = "10.1038/s41598-018-27947-4",
language = "English",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature publishing group",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Aquatic behaviour of polar bears (Ursus maritimus) in an increasingly ice-free Arctic

AU - Lone, Karen

AU - Kovacs, Kit M.

AU - Lydersen, Christian

AU - Fedak, Mike

AU - Andersen, Magnus

AU - Lovell, Philip

AU - Aars, Jon

N1 - This study was funded by Statoil and the Norwegian Polar Institute’s ICE Centre. The Norwegian Polar Institute, WWF and various NRC projects have also contributed to the base-line capture-recapture programme that financed telemetric deployments.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Polar bears are ice-associated marine mammals that are known to swim and dive, yet their aquatic behaviour is poorly documented. Reductions in Arctic sea ice are clearly a major threat to this species, but understanding polar bears' potential behavioural plasticity with respect to the ongoing changes requires knowledge of their swimming and diving skills. This study quantified time spent in water by adult female polar bears (n = 57) via deployment of various instruments bearing saltwater switches, and in some case pressure sensors (79 deployments, 64.8 bear-years of data). There were marked seasonal patterns in aquatic behaviour, with more time spent in the water during summer, when 75% of the polar bears swam daily (May-July). Females with cubs-of-the-year spent less time in the water than other females from den emergence (April) until mid-summer, consistent with small cubs being vulnerable to hypothermia and drowning. Some bears undertook notable long-distance-swims. Dive depths up to 13.9 m were recorded, with dives ≥5 m being common. The considerable swimming and diving capacities of polar bears might provide them with tools to exploit aquatic environments previously not utilized. This is likely to be increasingly important to the species' survival in an Arctic with little or no persistent sea ice.

AB - Polar bears are ice-associated marine mammals that are known to swim and dive, yet their aquatic behaviour is poorly documented. Reductions in Arctic sea ice are clearly a major threat to this species, but understanding polar bears' potential behavioural plasticity with respect to the ongoing changes requires knowledge of their swimming and diving skills. This study quantified time spent in water by adult female polar bears (n = 57) via deployment of various instruments bearing saltwater switches, and in some case pressure sensors (79 deployments, 64.8 bear-years of data). There were marked seasonal patterns in aquatic behaviour, with more time spent in the water during summer, when 75% of the polar bears swam daily (May-July). Females with cubs-of-the-year spent less time in the water than other females from den emergence (April) until mid-summer, consistent with small cubs being vulnerable to hypothermia and drowning. Some bears undertook notable long-distance-swims. Dive depths up to 13.9 m were recorded, with dives ≥5 m being common. The considerable swimming and diving capacities of polar bears might provide them with tools to exploit aquatic environments previously not utilized. This is likely to be increasingly important to the species' survival in an Arctic with little or no persistent sea ice.

U2 - 10.1038/s41598-018-27947-4

DO - 10.1038/s41598-018-27947-4

M3 - Article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 9677

ER -

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