Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study
Calanus finmarchicus is a zooplankter that forms a critical part of the North Atlantic ecosystem, and provides a key link in the transfer of energy between trophic levels. The Labrador Sea contains a large population of Calanus finmarchicus, but existing data for the central and northern parts of th...
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Memorial University of Newfoundland
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Online Access: | https://research.library.mun.ca/1603/ https://research.library.mun.ca/1603/1/Tittensor_Derek.pdf https://research.library.mun.ca/1603/3/Tittensor_Derek.pdf |
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ftmemorialuniv:oai:research.library.mun.ca:1603 2023-10-01T03:55:12+02:00 Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study Tittensor, Derek 2002 application/pdf https://research.library.mun.ca/1603/ https://research.library.mun.ca/1603/1/Tittensor_Derek.pdf https://research.library.mun.ca/1603/3/Tittensor_Derek.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/1603/1/Tittensor_Derek.pdf https://research.library.mun.ca/1603/3/Tittensor_Derek.pdf Tittensor, Derek <https://research.library.mun.ca/view/creator_az/Tittensor=3ADerek=3A=3A.html> (2002) Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2002 ftmemorialuniv 2023-09-03T06:44:28Z Calanus finmarchicus is a zooplankter that forms a critical part of the North Atlantic ecosystem, and provides a key link in the transfer of energy between trophic levels. The Labrador Sea contains a large population of Calanus finmarchicus, but existing data for the central and northern parts of this region are sparse. There are, as yet, few wintertime observations due to the difficulties of data collection. Modelling studies provide a useful method to assess ecological and oceanographic processes and can give insight into the spatial structure of populations. This study couples a biological model of Calanus finmarchicus with a circulation model of the Labrador Sea and its environs in an attempt to understand interactions between the physical oceanographic transport processes of the region and zooplankton behaviour, life-history and distribution. The study aims to produce a large-scale, comprehensive picture of the spatial distribution of Calanus finmarchicus in the Labrador Sea, along with an exploration of the timing of diapause, and an examination of transport processes and their effect on population sustainability. The modelled population structure matches reasonably well to temporal and spatial patterns in the Labrador Sea derived from available data sets. During an annual cycle, surface currents can cause a population to be advected onto shelf and slope regions from the deeper ocean. A latitudinally-dependent diapause emergence scheme with early emergence to the south ofNewfoundland provides the best fit to data. Thesis Calanus finmarchicus Labrador Sea North Atlantic Memorial University of Newfoundland: Research Repository |
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Memorial University of Newfoundland: Research Repository |
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English |
description |
Calanus finmarchicus is a zooplankter that forms a critical part of the North Atlantic ecosystem, and provides a key link in the transfer of energy between trophic levels. The Labrador Sea contains a large population of Calanus finmarchicus, but existing data for the central and northern parts of this region are sparse. There are, as yet, few wintertime observations due to the difficulties of data collection. Modelling studies provide a useful method to assess ecological and oceanographic processes and can give insight into the spatial structure of populations. This study couples a biological model of Calanus finmarchicus with a circulation model of the Labrador Sea and its environs in an attempt to understand interactions between the physical oceanographic transport processes of the region and zooplankton behaviour, life-history and distribution. The study aims to produce a large-scale, comprehensive picture of the spatial distribution of Calanus finmarchicus in the Labrador Sea, along with an exploration of the timing of diapause, and an examination of transport processes and their effect on population sustainability. The modelled population structure matches reasonably well to temporal and spatial patterns in the Labrador Sea derived from available data sets. During an annual cycle, surface currents can cause a population to be advected onto shelf and slope regions from the deeper ocean. A latitudinally-dependent diapause emergence scheme with early emergence to the south ofNewfoundland provides the best fit to data. |
format |
Thesis |
author |
Tittensor, Derek |
spellingShingle |
Tittensor, Derek Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
author_facet |
Tittensor, Derek |
author_sort |
Tittensor, Derek |
title |
Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
title_short |
Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
title_full |
Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
title_fullStr |
Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
title_full_unstemmed |
Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study |
title_sort |
population distribution of the copepod calanus finmarchicus in the labrador sea : a modelling study |
publisher |
Memorial University of Newfoundland |
publishDate |
2002 |
url |
https://research.library.mun.ca/1603/ https://research.library.mun.ca/1603/1/Tittensor_Derek.pdf https://research.library.mun.ca/1603/3/Tittensor_Derek.pdf |
genre |
Calanus finmarchicus Labrador Sea North Atlantic |
genre_facet |
Calanus finmarchicus Labrador Sea North Atlantic |
op_relation |
https://research.library.mun.ca/1603/1/Tittensor_Derek.pdf https://research.library.mun.ca/1603/3/Tittensor_Derek.pdf Tittensor, Derek <https://research.library.mun.ca/view/creator_az/Tittensor=3ADerek=3A=3A.html> (2002) Population distribution of the copepod Calanus finmarchicus in the Labrador Sea : a modelling study. Masters thesis, Memorial University of Newfoundland. |
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1778523444909965312 |