From pup production to quotas: current status of harp seals in the Greenland Sea
Abstract Harp seals (Pagophilus groenlandicus) have been harvested for centuries in the North Atlantic. Estimating abundance and monitoring changes in population size are critical for the management of the species. In March 2012, the harp seal pup production was estimated from aerial photographic su...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fst155 http://academic.oup.com/icesjms/article-pdf/71/3/537/29145683/fst155.pdf |
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croxfordunivpr:10.1093/icesjms/fst155 2023-11-12T04:17:56+01:00 From pup production to quotas: current status of harp seals in the Greenland Sea Øigård, Tor Arne Haug, Tore Nilssen, Kjell Tormod 2013 http://dx.doi.org/10.1093/icesjms/fst155 http://academic.oup.com/icesjms/article-pdf/71/3/537/29145683/fst155.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 71, issue 3, page 537-545 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2013 croxfordunivpr https://doi.org/10.1093/icesjms/fst155 2023-10-13T10:55:36Z Abstract Harp seals (Pagophilus groenlandicus) have been harvested for centuries in the North Atlantic. Estimating abundance and monitoring changes in population size are critical for the management of the species. In March 2012, the harp seal pup production was estimated from aerial photographic surveys over the whelping areas. A total area of 305 km2 was photographed and 6034 pups were counted on the photos. From this the total pup production estimate was 89 590 ( s.e. = 12 310, CV = 13.7%). The status of the stock was subsequently assessed by fitting a population model to the independent pup production estimate, the historical catch data, and the historical reproduction data. The 2013 total abundance (including pups) was estimated to be 627 410 (95% CI = 470 540–784 280) harp seals. We demonstrate how the model is used in assessment when exploring the effect of various catch scenarios on future predictions. Article in Journal/Newspaper Greenland Greenland Sea Harp Seal North Atlantic Pagophilus groenlandicus Oxford University Press (via Crossref) Greenland ICES Journal of Marine Science 71 3 537 545 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Øigård, Tor Arne Haug, Tore Nilssen, Kjell Tormod From pup production to quotas: current status of harp seals in the Greenland Sea |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Harp seals (Pagophilus groenlandicus) have been harvested for centuries in the North Atlantic. Estimating abundance and monitoring changes in population size are critical for the management of the species. In March 2012, the harp seal pup production was estimated from aerial photographic surveys over the whelping areas. A total area of 305 km2 was photographed and 6034 pups were counted on the photos. From this the total pup production estimate was 89 590 ( s.e. = 12 310, CV = 13.7%). The status of the stock was subsequently assessed by fitting a population model to the independent pup production estimate, the historical catch data, and the historical reproduction data. The 2013 total abundance (including pups) was estimated to be 627 410 (95% CI = 470 540–784 280) harp seals. We demonstrate how the model is used in assessment when exploring the effect of various catch scenarios on future predictions. |
format |
Article in Journal/Newspaper |
author |
Øigård, Tor Arne Haug, Tore Nilssen, Kjell Tormod |
author_facet |
Øigård, Tor Arne Haug, Tore Nilssen, Kjell Tormod |
author_sort |
Øigård, Tor Arne |
title |
From pup production to quotas: current status of harp seals in the Greenland Sea |
title_short |
From pup production to quotas: current status of harp seals in the Greenland Sea |
title_full |
From pup production to quotas: current status of harp seals in the Greenland Sea |
title_fullStr |
From pup production to quotas: current status of harp seals in the Greenland Sea |
title_full_unstemmed |
From pup production to quotas: current status of harp seals in the Greenland Sea |
title_sort |
from pup production to quotas: current status of harp seals in the greenland sea |
publisher |
Oxford University Press (OUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1093/icesjms/fst155 http://academic.oup.com/icesjms/article-pdf/71/3/537/29145683/fst155.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Harp Seal North Atlantic Pagophilus groenlandicus |
genre_facet |
Greenland Greenland Sea Harp Seal North Atlantic Pagophilus groenlandicus |
op_source |
ICES Journal of Marine Science volume 71, issue 3, page 537-545 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fst155 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
3 |
container_start_page |
537 |
op_container_end_page |
545 |
_version_ |
1782334681808633856 |