Deep-ocean predation by a high Arctic cetacean
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...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2004
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 |
id |
ftdtupubl:oai:pure.atira.dk:publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 2024-06-23T07:48:27+00:00 Deep-ocean predation by a high Arctic cetacean Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, Ole A Treble, M.A. 2004 https://orbit.dtu.dk/en/publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 eng eng https://orbit.dtu.dk/en/publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 info:eu-repo/semantics/restrictedAccess Laidre , K L , Heide-Jørgensen , M P , Jørgensen , O A & Treble , M A 2004 , ' Deep-ocean predation by a high Arctic cetacean ' , ICES Journal of Marine Science , vol. 61 , no. 3 , pp. 430-440 . Individ- og populationsinteraktioner article 2004 ftdtupubl 2024-06-11T14:24:37Z 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 19000 tonnes, corresponded well with the predicted biomass removed by the narwhal sub-population on a diet of 50-75% Greenland halibut. (C) 2004 International Council for the Exploration of the Sea. Published by Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Arctic Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* Technical University of Denmark: DTU Orbit Arctic Baffin Bay Greenland |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Individ- og populationsinteraktioner |
spellingShingle |
Individ- og populationsinteraktioner Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, Ole A Treble, M.A. Deep-ocean predation by a high Arctic cetacean |
topic_facet |
Individ- og populationsinteraktioner |
description |
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 19000 tonnes, corresponded well with the predicted biomass removed by the narwhal sub-population on a diet of 50-75% Greenland halibut. (C) 2004 International Council for the Exploration of the Sea. Published by Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, Ole A Treble, M.A. |
author_facet |
Laidre, K.L. Heide-Jørgensen, M.P. Jørgensen, Ole 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 |
publishDate |
2004 |
url |
https://orbit.dtu.dk/en/publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
Arctic Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* |
genre_facet |
Arctic Arctic Baffin Bay Baffin Bay Baffin Greenland Monodon monoceros narwhal* |
op_source |
Laidre , K L , Heide-Jørgensen , M P , Jørgensen , O A & Treble , M A 2004 , ' Deep-ocean predation by a high Arctic cetacean ' , ICES Journal of Marine Science , vol. 61 , no. 3 , pp. 430-440 . |
op_relation |
https://orbit.dtu.dk/en/publications/1ff3bfa5-e03e-4bda-82f8-09bfe1c993e9 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1802638866690080768 |