Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic
Abstract: In August 1999 and 2000, four suction-cup-attached time–depth recorders (TDRs) were deployed and re-trieved from narwhals (Monodon monoceros) in Tremblay Sound, Baffin Island, and Creswell Bay, Somerset Island, Nunavut, Canada. The TDRs remained on the whales for between 12 and 33 h and co...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.459.1264 2023-05-15T15:07:02+02:00 Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic Kristin L. Laidre Mads Peter Heide-jørgensen Rune Dietz The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.459.1264 http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.459.1264 http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf text 2002 ftciteseerx 2016-01-08T06:23:40Z Abstract: In August 1999 and 2000, four suction-cup-attached time–depth recorders (TDRs) were deployed and re-trieved from narwhals (Monodon monoceros) in Tremblay Sound, Baffin Island, and Creswell Bay, Somerset Island, Nunavut, Canada. The TDRs remained on the whales for between 12 and 33 h and collected 64.5 h of dive data. Mean dive depths ranged from 20.8 m (SD = 14.8 m) to 50.8 m (SD = 43.8 m) and mean dive durations ranged from 3.4 min (SD = 1.6 min) to 4.9 min (SD = 4.5 min). There appeared to be individual differences in dive parameters both within a region and between regions. Three of the whales made short, shallow dives, while another whale made dives twice as deep and twice as long. One whale had maximum dive durations (>20 min) that exceeded predicted aerobic dive limits for narwhals. There was a strong relationship between maximum dive depth and duration for all whales (p < 0.0001). Narwhals spent between 30.3 and 52.9 % of their time at depths <5 m and the range of correction factors for availability bias was 1.9–3.3. Satellite-linked TDRs were simultaneously deployed on the whales at both localities. Dive data collected using the two methods were compared and good agreement between the methods was obtained. Text Arctic Baffin Island Baffin Creswell Bay Monodon monoceros narwhal* Nunavut Somerset Island Unknown Arctic Baffin Island Canada Nunavut Somerset Island ENVELOPE(-93.500,-93.500,73.251,73.251) Tremblay ENVELOPE(-120.853,-120.853,55.783,55.783) Tremblay Sound ENVELOPE(-80.999,-80.999,72.418,72.418) |
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Open Polar |
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ftciteseerx |
language |
English |
description |
Abstract: In August 1999 and 2000, four suction-cup-attached time–depth recorders (TDRs) were deployed and re-trieved from narwhals (Monodon monoceros) in Tremblay Sound, Baffin Island, and Creswell Bay, Somerset Island, Nunavut, Canada. The TDRs remained on the whales for between 12 and 33 h and collected 64.5 h of dive data. Mean dive depths ranged from 20.8 m (SD = 14.8 m) to 50.8 m (SD = 43.8 m) and mean dive durations ranged from 3.4 min (SD = 1.6 min) to 4.9 min (SD = 4.5 min). There appeared to be individual differences in dive parameters both within a region and between regions. Three of the whales made short, shallow dives, while another whale made dives twice as deep and twice as long. One whale had maximum dive durations (>20 min) that exceeded predicted aerobic dive limits for narwhals. There was a strong relationship between maximum dive depth and duration for all whales (p < 0.0001). Narwhals spent between 30.3 and 52.9 % of their time at depths <5 m and the range of correction factors for availability bias was 1.9–3.3. Satellite-linked TDRs were simultaneously deployed on the whales at both localities. Dive data collected using the two methods were compared and good agreement between the methods was obtained. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kristin L. Laidre Mads Peter Heide-jørgensen Rune Dietz |
spellingShingle |
Kristin L. Laidre Mads Peter Heide-jørgensen Rune Dietz Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
author_facet |
Kristin L. Laidre Mads Peter Heide-jørgensen Rune Dietz |
author_sort |
Kristin L. Laidre |
title |
Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
title_short |
Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
title_full |
Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
title_fullStr |
Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
title_full_unstemmed |
Diving behaviour of narwhals (Monodon monceros) at two coastal localaties in the Canadian High Arctic |
title_sort |
diving behaviour of narwhals (monodon monceros) at two coastal localaties in the canadian high arctic |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.459.1264 http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf |
long_lat |
ENVELOPE(-93.500,-93.500,73.251,73.251) ENVELOPE(-120.853,-120.853,55.783,55.783) ENVELOPE(-80.999,-80.999,72.418,72.418) |
geographic |
Arctic Baffin Island Canada Nunavut Somerset Island Tremblay Tremblay Sound |
geographic_facet |
Arctic Baffin Island Canada Nunavut Somerset Island Tremblay Tremblay Sound |
genre |
Arctic Baffin Island Baffin Creswell Bay Monodon monoceros narwhal* Nunavut Somerset Island |
genre_facet |
Arctic Baffin Island Baffin Creswell Bay Monodon monoceros narwhal* Nunavut Somerset Island |
op_source |
http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.459.1264 http://www.neri.dk/1_Om_DMU/2_Afdelinger/3_AM/4_Expertise/5_Research/6_marine_mammals/Litterature_pdf/narhval.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766338601753247744 |