Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters
Harbour seal (Phoca vitulina) numbers along the coast of Iceland were monitored by aerial survey in the period 1980-2006. Trends in the abundance of the harbour seal population on the whole coast and in coastal regions of Iceland waters were estimated using ANCOVA on the survey counts, corrected for...
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2010
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ftdoajarticles:oai:doaj.org/article:9531f7c229d54c90b615346b69870bae 2023-05-15T15:46:29+02:00 Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters Erlingur Hauksson 2010-09-01T00:00:00Z https://doi.org/10.7557/3.2687 https://doaj.org/article/9531f7c229d54c90b615346b69870bae EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2687 https://doaj.org/toc/1560-2206 https://doaj.org/toc/2309-2491 1560-2206 2309-2491 doi:10.7557/3.2687 https://doaj.org/article/9531f7c229d54c90b615346b69870bae NAMMCO Scientific Publications, Vol 8, Iss 0, Pp 227-244 (2010) harbour seals Iceland abundance surveys Ecology QH540-549.5 article 2010 ftdoajarticles https://doi.org/10.7557/3.2687 2022-12-31T14:44:12Z Harbour seal (Phoca vitulina) numbers along the coast of Iceland were monitored by aerial survey in the period 1980-2006. Trends in the abundance of the harbour seal population on the whole coast and in coastal regions of Iceland waters were estimated using ANCOVA on the survey counts, corrected for the influence of several covariates. Harbour seals were found in every coastal area, but were most abundant in Faxaflói, Breiðafjörður and on the northwest coast inthe beginning of this study. Harbour seal numbers declined significantly at a rate of rest = -0.04 (SE 0.005) yr-1 during this period. Decline was highest in Faxaflói and at the south coast (≅7%), while the east coast experienced a significant but lesser (≅1%) decline. Other coastal areas did not show significant trends. The northwest coast was the richest harbour seal area in Iceland in 2006. In Icelandic waters seals are commercially harvested, and unreported but probably high numbers of harbour seals are killed intentionally by shooting and accidentally in fishing geareach year. These factors likely contributed to the overall observed decline in seal numbers. Article in Journal/Newspaper Breiðafjörður harbour seal Iceland Phoca vitulina Directory of Open Access Journals: DOAJ Articles Breiðafjörður ENVELOPE(-23.219,-23.219,65.253,65.253) Faxaflói ENVELOPE(-22.451,-22.451,64.322,64.322) NAMMCO Scientific Publications 8 227 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
harbour seals Iceland abundance surveys Ecology QH540-549.5 |
spellingShingle |
harbour seals Iceland abundance surveys Ecology QH540-549.5 Erlingur Hauksson Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
topic_facet |
harbour seals Iceland abundance surveys Ecology QH540-549.5 |
description |
Harbour seal (Phoca vitulina) numbers along the coast of Iceland were monitored by aerial survey in the period 1980-2006. Trends in the abundance of the harbour seal population on the whole coast and in coastal regions of Iceland waters were estimated using ANCOVA on the survey counts, corrected for the influence of several covariates. Harbour seals were found in every coastal area, but were most abundant in Faxaflói, Breiðafjörður and on the northwest coast inthe beginning of this study. Harbour seal numbers declined significantly at a rate of rest = -0.04 (SE 0.005) yr-1 during this period. Decline was highest in Faxaflói and at the south coast (≅7%), while the east coast experienced a significant but lesser (≅1%) decline. Other coastal areas did not show significant trends. The northwest coast was the richest harbour seal area in Iceland in 2006. In Icelandic waters seals are commercially harvested, and unreported but probably high numbers of harbour seals are killed intentionally by shooting and accidentally in fishing geareach year. These factors likely contributed to the overall observed decline in seal numbers. |
format |
Article in Journal/Newspaper |
author |
Erlingur Hauksson |
author_facet |
Erlingur Hauksson |
author_sort |
Erlingur Hauksson |
title |
Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
title_short |
Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
title_full |
Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
title_fullStr |
Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
title_full_unstemmed |
Monitoring trends in the abundance of harbour seals ( Phoca vitulina ) in Icelandic waters |
title_sort |
monitoring trends in the abundance of harbour seals ( phoca vitulina ) in icelandic waters |
publisher |
Septentrio Academic Publishing |
publishDate |
2010 |
url |
https://doi.org/10.7557/3.2687 https://doaj.org/article/9531f7c229d54c90b615346b69870bae |
long_lat |
ENVELOPE(-23.219,-23.219,65.253,65.253) ENVELOPE(-22.451,-22.451,64.322,64.322) |
geographic |
Breiðafjörður Faxaflói |
geographic_facet |
Breiðafjörður Faxaflói |
genre |
Breiðafjörður harbour seal Iceland Phoca vitulina |
genre_facet |
Breiðafjörður harbour seal Iceland Phoca vitulina |
op_source |
NAMMCO Scientific Publications, Vol 8, Iss 0, Pp 227-244 (2010) |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2687 https://doaj.org/toc/1560-2206 https://doaj.org/toc/2309-2491 1560-2206 2309-2491 doi:10.7557/3.2687 https://doaj.org/article/9531f7c229d54c90b615346b69870bae |
op_doi |
https://doi.org/10.7557/3.2687 |
container_title |
NAMMCO Scientific Publications |
container_volume |
8 |
container_start_page |
227 |
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1766381177261785088 |