An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat
An optimisation model was developed to examine the effect of predation risk and environmental conditions on the diel vertical migration (DVM) of adult northern krill (Meganyctiphanes norvegica). Model predictions were compared in two locations with contrasting environmental conditions, the Clyde Sea...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2000
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Online Access: | http://dx.doi.org/10.1139/f00-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-171 |
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crcansciencepubl:10.1139/f00-171 2023-12-17T10:33:19+01:00 An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat Tarling, Geraint Burrows, Michael Matthews, Jack Saborowski, Reinhard Buchholz, Friedrich Bedo, Alain Mayzaud, Patrick 2000 http://dx.doi.org/10.1139/f00-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-171 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue S3, page 38-50 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2000 crcansciencepubl https://doi.org/10.1139/f00-171 2023-11-19T13:38:41Z An optimisation model was developed to examine the effect of predation risk and environmental conditions on the diel vertical migration (DVM) of adult northern krill (Meganyctiphanes norvegica). Model predictions were compared in two locations with contrasting environmental conditions, the Clyde Sea and the Kattegat. The model was constructed from a combination of parameterised functions and empirical field data obtained during summer conditions. Parameter matrices were set up to cover the entire water column over a 24-h period. The first matrix contained values for "net energy gain," which incorporated empirical data on temperature-dependent respiration, copepod and phytoplankton abundance, and a functional response model for feeding rate. The second matrix expressed the risk of encountering a generalised visual (fish) predator as a function of light levels. The optimisation procedure sought a path through depth and time such that the energy gain was equal to the amount necessary to grow, produce eggs, and moult, while the risk of predation was minimised. The model predicted DVM in both the Clyde Sea and the Kattegat. Sensitivity analyses showed that the predicted DVM pattern was mainly driven by food and predation risk, with temperature effects on metabolic costs having a minor effect. Article in Journal/Newspaper Meganyctiphanes norvegica Northern krill Canadian Science Publishing (via Crossref) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Canadian Journal of Fisheries and Aquatic Sciences 57 S3 38 50 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Tarling, Geraint Burrows, Michael Matthews, Jack Saborowski, Reinhard Buchholz, Friedrich Bedo, Alain Mayzaud, Patrick An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
An optimisation model was developed to examine the effect of predation risk and environmental conditions on the diel vertical migration (DVM) of adult northern krill (Meganyctiphanes norvegica). Model predictions were compared in two locations with contrasting environmental conditions, the Clyde Sea and the Kattegat. The model was constructed from a combination of parameterised functions and empirical field data obtained during summer conditions. Parameter matrices were set up to cover the entire water column over a 24-h period. The first matrix contained values for "net energy gain," which incorporated empirical data on temperature-dependent respiration, copepod and phytoplankton abundance, and a functional response model for feeding rate. The second matrix expressed the risk of encountering a generalised visual (fish) predator as a function of light levels. The optimisation procedure sought a path through depth and time such that the energy gain was equal to the amount necessary to grow, produce eggs, and moult, while the risk of predation was minimised. The model predicted DVM in both the Clyde Sea and the Kattegat. Sensitivity analyses showed that the predicted DVM pattern was mainly driven by food and predation risk, with temperature effects on metabolic costs having a minor effect. |
format |
Article in Journal/Newspaper |
author |
Tarling, Geraint Burrows, Michael Matthews, Jack Saborowski, Reinhard Buchholz, Friedrich Bedo, Alain Mayzaud, Patrick |
author_facet |
Tarling, Geraint Burrows, Michael Matthews, Jack Saborowski, Reinhard Buchholz, Friedrich Bedo, Alain Mayzaud, Patrick |
author_sort |
Tarling, Geraint |
title |
An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
title_short |
An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
title_full |
An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
title_fullStr |
An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
title_full_unstemmed |
An optimisation model of the diel vertical migration of northern krill ( Meganyctiphanes norvegica ) in the Clyde Sea and the Kattegat |
title_sort |
optimisation model of the diel vertical migration of northern krill ( meganyctiphanes norvegica ) in the clyde sea and the kattegat |
publisher |
Canadian Science Publishing |
publishDate |
2000 |
url |
http://dx.doi.org/10.1139/f00-171 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-171 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
Meganyctiphanes norvegica Northern krill |
genre_facet |
Meganyctiphanes norvegica Northern krill |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue S3, page 38-50 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f00-171 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
S3 |
container_start_page |
38 |
op_container_end_page |
50 |
_version_ |
1785587272015413248 |