Surveys of belugas and narwhals in the Canadian High Arctic in 1996
The summer range of belugas (Delphinapterus leucas) and narwhals (Monodon monoceros) in Prince Regent Inlet, Barrow Strait and Peel Sound in the Canadian High Arctic was surveyed from 31 July to 3 August 1996 with a visual aerial survey of offshore areas and photographic aerial surveys of concentrat...
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Septentrio Academic Publishing
2002
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Online Access: | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843 https://doi.org/10.7557/3.2843 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2843 2023-05-15T14:24:33+02:00 Surveys of belugas and narwhals in the Canadian High Arctic in 1996 Innes, Stuart Heide-Jørgensen, MP Laake, Jeff L Laidre, Kristin L Cleator, Holly J Richard, Pierre Stewart, Robert EA 2002-07-22 application/pdf https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843 https://doi.org/10.7557/3.2843 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843/2697 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843 doi:10.7557/3.2843 Copyright (c) 2002 Stuart Innes, MP Heide-Jørgensen, Jeff L Laake, Kristin L Laidre, Holly J Cleator, Pierre Richard, Robert EA Stewart http://creativecommons.org/licenses/by/3.0/ CC-BY NAMMCO Scientific Publications; Vol 4: Belugas in the North Atlantic and the Russian Arctic; 169-190 2309-2491 1560-2206 10.7557/3.4 belugas Delphinapterus leucas narwhals Monodon monoceros surveys population size info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2002 ftunitroemsoe https://doi.org/10.7557/3.2843 https://doi.org/10.7557/3.4 2021-08-16T16:40:14Z The summer range of belugas (Delphinapterus leucas) and narwhals (Monodon monoceros) in Prince Regent Inlet, Barrow Strait and Peel Sound in the Canadian High Arctic was surveyed from 31 July to 3 August 1996 with a visual aerial survey of offshore areas and photographic aerial surveys of concentration areas. The visual survey estimate based on the number of belugas visible to the observers using systematic line transect methods was 10,347 (cv = 0.28). This included corrections for whales that were missed by the observers, observations without distance measurements and an estimate of 1,949 (cv=0.22) belugas from a photographic survey in southern Peel Sound. Using data from belugas tagged with satellite-linked time-depth recorders, the estimate was adjusted for individuals that were diving during the survey which resulted in an estimate of 18,930 belugas (cv = 0.28). Finally, counts of belugas in estuaries, corrected for estuarine surface time, were added to provide a complete estimate of 21,213 belugas (95% CI 10,985 to 32,619). The estimated number of narwhals corrected for sightings that were missed by observers was 16,364 (cv = 0.24). Adjusting this for sightings without distance information and correcting for whales that were submerged produced an estimate of 45,358 narwhals (95% CI 23,397 to 87,932). Article in Journal/Newspaper Arctic Arctic Beluga* Delphinapterus leucas Monodon monoceros narwhal* Prince Regent Inlet University of Tromsø: Septentrio Academic Publishing Arctic Barrow Strait ENVELOPE(-94.168,-94.168,74.402,74.402) Peel Sound ENVELOPE(-96.334,-96.334,73.001,73.001) Prince Regent Inlet ENVELOPE(-90.431,-90.431,72.993,72.993) NAMMCO Scientific Publications 4 169 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
belugas Delphinapterus leucas narwhals Monodon monoceros surveys population size |
spellingShingle |
belugas Delphinapterus leucas narwhals Monodon monoceros surveys population size Innes, Stuart Heide-Jørgensen, MP Laake, Jeff L Laidre, Kristin L Cleator, Holly J Richard, Pierre Stewart, Robert EA Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
topic_facet |
belugas Delphinapterus leucas narwhals Monodon monoceros surveys population size |
description |
The summer range of belugas (Delphinapterus leucas) and narwhals (Monodon monoceros) in Prince Regent Inlet, Barrow Strait and Peel Sound in the Canadian High Arctic was surveyed from 31 July to 3 August 1996 with a visual aerial survey of offshore areas and photographic aerial surveys of concentration areas. The visual survey estimate based on the number of belugas visible to the observers using systematic line transect methods was 10,347 (cv = 0.28). This included corrections for whales that were missed by the observers, observations without distance measurements and an estimate of 1,949 (cv=0.22) belugas from a photographic survey in southern Peel Sound. Using data from belugas tagged with satellite-linked time-depth recorders, the estimate was adjusted for individuals that were diving during the survey which resulted in an estimate of 18,930 belugas (cv = 0.28). Finally, counts of belugas in estuaries, corrected for estuarine surface time, were added to provide a complete estimate of 21,213 belugas (95% CI 10,985 to 32,619). The estimated number of narwhals corrected for sightings that were missed by observers was 16,364 (cv = 0.24). Adjusting this for sightings without distance information and correcting for whales that were submerged produced an estimate of 45,358 narwhals (95% CI 23,397 to 87,932). |
format |
Article in Journal/Newspaper |
author |
Innes, Stuart Heide-Jørgensen, MP Laake, Jeff L Laidre, Kristin L Cleator, Holly J Richard, Pierre Stewart, Robert EA |
author_facet |
Innes, Stuart Heide-Jørgensen, MP Laake, Jeff L Laidre, Kristin L Cleator, Holly J Richard, Pierre Stewart, Robert EA |
author_sort |
Innes, Stuart |
title |
Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
title_short |
Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
title_full |
Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
title_fullStr |
Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
title_full_unstemmed |
Surveys of belugas and narwhals in the Canadian High Arctic in 1996 |
title_sort |
surveys of belugas and narwhals in the canadian high arctic in 1996 |
publisher |
Septentrio Academic Publishing |
publishDate |
2002 |
url |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843 https://doi.org/10.7557/3.2843 |
long_lat |
ENVELOPE(-94.168,-94.168,74.402,74.402) ENVELOPE(-96.334,-96.334,73.001,73.001) ENVELOPE(-90.431,-90.431,72.993,72.993) |
geographic |
Arctic Barrow Strait Peel Sound Prince Regent Inlet |
geographic_facet |
Arctic Barrow Strait Peel Sound Prince Regent Inlet |
genre |
Arctic Arctic Beluga* Delphinapterus leucas Monodon monoceros narwhal* Prince Regent Inlet |
genre_facet |
Arctic Arctic Beluga* Delphinapterus leucas Monodon monoceros narwhal* Prince Regent Inlet |
op_source |
NAMMCO Scientific Publications; Vol 4: Belugas in the North Atlantic and the Russian Arctic; 169-190 2309-2491 1560-2206 10.7557/3.4 |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843/2697 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2843 doi:10.7557/3.2843 |
op_rights |
Copyright (c) 2002 Stuart Innes, MP Heide-Jørgensen, Jeff L Laake, Kristin L Laidre, Holly J Cleator, Pierre Richard, Robert EA Stewart http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/3.2843 https://doi.org/10.7557/3.4 |
container_title |
NAMMCO Scientific Publications |
container_volume |
4 |
container_start_page |
169 |
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1766296988515565568 |