Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea
It is now recognized that Calanus finmarchicus, the dominant copepod zooplankter of the North Atlantic, has most of its biomass in the open ocean. While the Labrador Sea does contain a large population of Cal-anus finmarchicus, the importance of possible connec-tions with the rest of the North Atlan...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.531.6947 2023-05-15T15:47:45+02:00 Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea D. P. Tittensor B. Deyoung C. L. Tang The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6947 http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6947 http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf Key words Calanus finmarchicus climate impacts diapause Labrador Sea population model SeaWiFS text ftciteseerx 2016-01-08T10:38:25Z It is now recognized that Calanus finmarchicus, the dominant copepod zooplankter of the North Atlantic, has most of its biomass in the open ocean. While the Labrador Sea does contain a large population of Cal-anus finmarchicus, the importance of possible connec-tions with the rest of the North Atlantic are not understood. Although there are few wintertime observations, sufficient data exist to model the role of the circulation, temperature and food supply on pop-ulation dynamics. This study couples a biological model of Calanus finmarchicus with a physical oceanographic model of the Labrador Sea, using chlorophyll data derived from observations by the satellite-borne SeaWiFS (Sea-viewing Wide Field-of-view Sensor) as a proxy food supply for the numerical copepods. We produce a large-scale, com-prehensive 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 population sustainability. We are able to simulate reasonably well the temporal and spatial patterns of Calanus finmarchicus in the Labrador Sea. During a year long model run, the population has a single generation over most of the Labrador Sea, with a final diapausing population about 50 % the size of the initial for the parameters used in these simulations. A latitudinally dependent diapause emergence scheme with early emergence to the south of Newfoundland provides the best fit to data. A change of 0.5C in the temperature field can cause significant changes in the population abundance in a single year, due to changes in Calanus finmarchicus growth rates. Text Calanus finmarchicus Labrador Sea Newfoundland North Atlantic Copepods Unknown Newfoundland |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
topic |
Key words Calanus finmarchicus climate impacts diapause Labrador Sea population model SeaWiFS |
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Key words Calanus finmarchicus climate impacts diapause Labrador Sea population model SeaWiFS D. P. Tittensor B. Deyoung C. L. Tang Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
topic_facet |
Key words Calanus finmarchicus climate impacts diapause Labrador Sea population model SeaWiFS |
description |
It is now recognized that Calanus finmarchicus, the dominant copepod zooplankter of the North Atlantic, has most of its biomass in the open ocean. While the Labrador Sea does contain a large population of Cal-anus finmarchicus, the importance of possible connec-tions with the rest of the North Atlantic are not understood. Although there are few wintertime observations, sufficient data exist to model the role of the circulation, temperature and food supply on pop-ulation dynamics. This study couples a biological model of Calanus finmarchicus with a physical oceanographic model of the Labrador Sea, using chlorophyll data derived from observations by the satellite-borne SeaWiFS (Sea-viewing Wide Field-of-view Sensor) as a proxy food supply for the numerical copepods. We produce a large-scale, com-prehensive 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 population sustainability. We are able to simulate reasonably well the temporal and spatial patterns of Calanus finmarchicus in the Labrador Sea. During a year long model run, the population has a single generation over most of the Labrador Sea, with a final diapausing population about 50 % the size of the initial for the parameters used in these simulations. A latitudinally dependent diapause emergence scheme with early emergence to the south of Newfoundland provides the best fit to data. A change of 0.5C in the temperature field can cause significant changes in the population abundance in a single year, due to changes in Calanus finmarchicus growth rates. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
D. P. Tittensor B. Deyoung C. L. Tang |
author_facet |
D. P. Tittensor B. Deyoung C. L. Tang |
author_sort |
D. P. Tittensor |
title |
Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
title_short |
Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
title_full |
Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
title_fullStr |
Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
title_full_unstemmed |
Modelling the distribution, sustainability and diapause emergence timing of the copepod Calanus finmarchicus in the Labrador Sea |
title_sort |
modelling the distribution, sustainability and diapause emergence timing of the copepod calanus finmarchicus in the labrador sea |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6947 http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Calanus finmarchicus Labrador Sea Newfoundland North Atlantic Copepods |
genre_facet |
Calanus finmarchicus Labrador Sea Newfoundland North Atlantic Copepods |
op_source |
http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6947 http://www.mathstat.dal.ca/~derekt/publications/tittensor_etal_2003.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766382693159796736 |