Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska
maternity den sites on Alaska’s North Slope in March 2002 and 2003 in an effort to describe bears ’ post-den emergence behavior. During 40 sessions spanning 459 h, we observed 8 adults and 14 dependent cubs outside dens for 37.5 h (8.2 % of total observation time). There was no significant differenc...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.516.4771 2023-05-15T14:19:46+02:00 Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska Tom S. Smith Steven T. Partridge Steven C. Amstrup Scott Schliebe The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.4771 http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.4771 http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf Key words Alaska behavior den emergence maternity den North Slope polar bear Ursus maritimus text 2007 ftciteseerx 2016-01-08T09:53:45Z maternity den sites on Alaska’s North Slope in March 2002 and 2003 in an effort to describe bears ’ post-den emergence behavior. During 40 sessions spanning 459 h, we observed 8 adults and 14 dependent cubs outside dens for 37.5 h (8.2 % of total observation time). There was no significant difference between den emergence dates in 2002 (mean = 15 Mar ± 4.1 d) and 2003 (mean = 21 Mar ± 2.1 d). Following initial den breakout, polar bears remained at their den sites for 1.5 to 14 days (mean = 8.1 ± 5.1 d). The average length of stay in dens between emergent periods was significantly shorter in 2002 (1.79 h) than in 2003 (4.82 h). While outside, adult bears were inactive 49.5 % of the time, whereas cubs were inactive 13.4 % of the time. We found no significant relationships between den emergence activity and weather. Adult polar bears at den sites subjected to industrial activity exhibited significantly fewer bouts of vigilance than denned bears in undisturbed areas (t =-5.5164, df = 4, p = 0.00). However, the duration of vigilance behaviors at sites near industrial activity was not significantly shorter than at the other sites studied (t =-1.8902, df = 4, p = 0.07). Results for these bears were within the range of findings in other studies of denned polar bears. Text Arctic north slope Ursus maritimus Alaska Unknown |
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Open Polar |
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ftciteseerx |
language |
English |
topic |
Key words Alaska behavior den emergence maternity den North Slope polar bear Ursus maritimus |
spellingShingle |
Key words Alaska behavior den emergence maternity den North Slope polar bear Ursus maritimus Tom S. Smith Steven T. Partridge Steven C. Amstrup Scott Schliebe Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
topic_facet |
Key words Alaska behavior den emergence maternity den North Slope polar bear Ursus maritimus |
description |
maternity den sites on Alaska’s North Slope in March 2002 and 2003 in an effort to describe bears ’ post-den emergence behavior. During 40 sessions spanning 459 h, we observed 8 adults and 14 dependent cubs outside dens for 37.5 h (8.2 % of total observation time). There was no significant difference between den emergence dates in 2002 (mean = 15 Mar ± 4.1 d) and 2003 (mean = 21 Mar ± 2.1 d). Following initial den breakout, polar bears remained at their den sites for 1.5 to 14 days (mean = 8.1 ± 5.1 d). The average length of stay in dens between emergent periods was significantly shorter in 2002 (1.79 h) than in 2003 (4.82 h). While outside, adult bears were inactive 49.5 % of the time, whereas cubs were inactive 13.4 % of the time. We found no significant relationships between den emergence activity and weather. Adult polar bears at den sites subjected to industrial activity exhibited significantly fewer bouts of vigilance than denned bears in undisturbed areas (t =-5.5164, df = 4, p = 0.00). However, the duration of vigilance behaviors at sites near industrial activity was not significantly shorter than at the other sites studied (t =-1.8902, df = 4, p = 0.07). Results for these bears were within the range of findings in other studies of denned polar bears. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Tom S. Smith Steven T. Partridge Steven C. Amstrup Scott Schliebe |
author_facet |
Tom S. Smith Steven T. Partridge Steven C. Amstrup Scott Schliebe |
author_sort |
Tom S. Smith |
title |
Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
title_short |
Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
title_full |
Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
title_fullStr |
Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
title_full_unstemmed |
Post-Den Emergence Behavior of Polar Bears (Ursus maritimus) in Northern Alaska |
title_sort |
post-den emergence behavior of polar bears (ursus maritimus) in northern alaska |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.4771 http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf |
genre |
Arctic north slope Ursus maritimus Alaska |
genre_facet |
Arctic north slope Ursus maritimus Alaska |
op_source |
http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.4771 http://pubs.aina.ucalgary.ca/arctic/arctic60-2-187.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291501144342528 |