Deep-ocean predation by a high Arctic cetacean
Abstract A bioenergetic model for two narwhal (Monodon monoceros) sub-populations was developed to quantify daily gross energy requirements and estimate the biomass of Greenland halibut (Reinhardtius hippoglossoides) needed to sustain the sub-populations for their 5-month stay on wintering grounds i...
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2004.02.002 http://academic.oup.com/icesjms/article-pdf/61/3/430/29160387/61-3-430.pdf |
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croxfordunivpr:10.1016/j.icesjms.2004.02.002 2023-12-31T10:03:49+01:00 Deep-ocean predation by a high Arctic cetacean Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, O.A. Treble, M.A. 2004 http://dx.doi.org/10.1016/j.icesjms.2004.02.002 http://academic.oup.com/icesjms/article-pdf/61/3/430/29160387/61-3-430.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 61, issue 3, page 430-440 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2004 croxfordunivpr https://doi.org/10.1016/j.icesjms.2004.02.002 2023-12-06T08:50:43Z Abstract A bioenergetic model for two narwhal (Monodon monoceros) sub-populations was developed to quantify daily gross energy requirements and estimate the biomass of Greenland halibut (Reinhardtius hippoglossoides) needed to sustain the sub-populations for their 5-month stay on wintering grounds in Baffin Bay. Whales in two separate wintering grounds were estimated to require 700 tonnes (s.e. 300) and 90 tonnes (s.e. 40) of Greenland halibut per day, assuming a diet of 50% Greenland halibut. Mean densities and length distributions of Greenland halibut inside and outside of the narwhal wintering grounds were correlated with predicted whale predation levels based on diving behavior. The difference in Greenland halibut biomass between an area with high predation and a comparable area without whales, approximately 19 000 tonnes, corresponded well with the predicted biomass removed by the narwhal sub-population on a diet of 50–75% Greenland halibut. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* Oxford University Press (via Crossref) ICES Journal of Marine Science 61 3 430 440 |
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 Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, O.A. Treble, M.A. Deep-ocean predation by a high Arctic cetacean |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract A bioenergetic model for two narwhal (Monodon monoceros) sub-populations was developed to quantify daily gross energy requirements and estimate the biomass of Greenland halibut (Reinhardtius hippoglossoides) needed to sustain the sub-populations for their 5-month stay on wintering grounds in Baffin Bay. Whales in two separate wintering grounds were estimated to require 700 tonnes (s.e. 300) and 90 tonnes (s.e. 40) of Greenland halibut per day, assuming a diet of 50% Greenland halibut. Mean densities and length distributions of Greenland halibut inside and outside of the narwhal wintering grounds were correlated with predicted whale predation levels based on diving behavior. The difference in Greenland halibut biomass between an area with high predation and a comparable area without whales, approximately 19 000 tonnes, corresponded well with the predicted biomass removed by the narwhal sub-population on a diet of 50–75% Greenland halibut. |
format |
Article in Journal/Newspaper |
author |
Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, O.A. Treble, M.A. |
author_facet |
Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, O.A. Treble, M.A. |
author_sort |
Laidre, K.L. |
title |
Deep-ocean predation by a high Arctic cetacean |
title_short |
Deep-ocean predation by a high Arctic cetacean |
title_full |
Deep-ocean predation by a high Arctic cetacean |
title_fullStr |
Deep-ocean predation by a high Arctic cetacean |
title_full_unstemmed |
Deep-ocean predation by a high Arctic cetacean |
title_sort |
deep-ocean predation by a high arctic cetacean |
publisher |
Oxford University Press (OUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1016/j.icesjms.2004.02.002 http://academic.oup.com/icesjms/article-pdf/61/3/430/29160387/61-3-430.pdf |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* |
op_source |
ICES Journal of Marine Science volume 61, issue 3, page 430-440 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2004.02.002 |
container_title |
ICES Journal of Marine Science |
container_volume |
61 |
container_issue |
3 |
container_start_page |
430 |
op_container_end_page |
440 |
_version_ |
1786826155841552384 |