Spatial demography of Calanus finmarchicus in the Irminger Sea
Continuous Plankton Recorder data suggest that the Irminger Sea supports a major proportion of the surface-living population of the copepod Calanus finmarchicus in the northern North Atlantic, but there have been few studies of its population dynamics in the region. In this paper, we document the se...
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ftnerc:oai:nora.nerc.ac.uk:11513 2023-05-15T15:47:58+02:00 Spatial demography of Calanus finmarchicus in the Irminger Sea Heath, M.R. Rasmussen, J. Ahmed, Y. Allen, J. Anderson, C.I.H. Brierley, A.S. Brown, L. Bunker, A. Cook, K. Davidson, R. Fielding, S. Gurney, W.S.C. Harris, R. Hay, S. Henson, S. Hirst, A.G. Holliday, N.P. Ingvarsdottir, A. Irigoien, X. Lindeque, P. Mayor, D.J. Montagnes, D. Moffat, C. Pollard, R. Richards, S. Saunders, R.A. Sidey, J. Smerdon, G. Speirs, D. Walsham, P. Waniek, J. Webster, L. Wilson, D. 2008 http://nora.nerc.ac.uk/id/eprint/11513/ unknown Elsevier Heath, M.R.; Rasmussen, J.; Ahmed, Y.; Allen, J.; Anderson, C.I.H.; Brierley, A.S.; Brown, L.; Bunker, A.; Cook, K.; Davidson, R.; Fielding, S.; Gurney, W.S.C.; Harris, R.; Hay, S.; Henson, S.; Hirst, A.G.; Holliday, N.P. orcid:0000-0002-9733-8002 Ingvarsdottir, A.; Irigoien, X.; Lindeque, P.; Mayor, D.J. orcid:0000-0002-1295-0041 Montagnes, D.; Moffat, C.; Pollard, R.; Richards, S.; Saunders, R.A.; Sidey, J.; Smerdon, G.; Speirs, D.; Walsham, P.; Waniek, J.; Webster, L.; Wilson, D. 2008 Spatial demography of Calanus finmarchicus in the Irminger Sea. Progress in Oceanography, 76 (1). 39-88. https://doi.org/10.1016/j.pocean.2007.10.001 <https://doi.org/10.1016/j.pocean.2007.10.001> Marine Sciences Biology and Microbiology Zoology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1016/j.pocean.2007.10.001 2023-02-04T19:27:25Z Continuous Plankton Recorder data suggest that the Irminger Sea supports a major proportion of the surface-living population of the copepod Calanus finmarchicus in the northern North Atlantic, but there have been few studies of its population dynamics in the region. In this paper, we document the seasonal changes in the demographic structure of C finmarchicus in the Irminger Sea from a field programme during 2001/2002, and the associations between its developmental stages and various apparent bio-physical zones. Overwintering stages were found widely at depth (>500 m) across the Irminger Sea, and surviving females were widely distributed in the surface waters the following spring. However, recruitment of the subsequent generation was concentrated around the fringes of the Irminger Sea basin, along the edges of the Irminger and East Greenland Currents, and not in the central basin. In late summer animals were found descending back to overwintering depths in the Central Irminger Sea. The key factors dictating this pattern of recruitment appear to be (a) the general circulation regime, (b) predation on eggs in the spring, possibly by the surviving GO stock, and (c) mortality of first feeding naupliar stages in the central basin where food concentrations appear to be low throughout the year. We compared the demographic patterns in 2001/2002 with observations from the only previous major survey in 1963 and with data from the Continuous Plankton Recorder (CPR) surveys. In both previous data sets, the basic structure of GO ascent from the central basin and G1 recruitment around the fringes was a robust feature, suggesting that it is a recurrent phenomenon. The Irminger Sea is a complex mixing zone between polar and Atlantic water masses, and it has also been identified as a site of sporadic deep convection. The physical oceanographic characteristics of the region are therefore potentially sensitive to climate fluctuations. Despite this, the abundance of C finmarchicus in the region, as measured by the CPR surveys, ... Article in Journal/Newspaper Calanus finmarchicus East Greenland Greenland North Atlantic Natural Environment Research Council: NERC Open Research Archive Central Basin ENVELOPE(43.000,43.000,73.500,73.500) Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Progress in Oceanography 76 1 39 88 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment Heath, M.R. Rasmussen, J. Ahmed, Y. Allen, J. Anderson, C.I.H. Brierley, A.S. Brown, L. Bunker, A. Cook, K. Davidson, R. Fielding, S. Gurney, W.S.C. Harris, R. Hay, S. Henson, S. Hirst, A.G. Holliday, N.P. Ingvarsdottir, A. Irigoien, X. Lindeque, P. Mayor, D.J. Montagnes, D. Moffat, C. Pollard, R. Richards, S. Saunders, R.A. Sidey, J. Smerdon, G. Speirs, D. Walsham, P. Waniek, J. Webster, L. Wilson, D. Spatial demography of Calanus finmarchicus in the Irminger Sea |
topic_facet |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
description |
Continuous Plankton Recorder data suggest that the Irminger Sea supports a major proportion of the surface-living population of the copepod Calanus finmarchicus in the northern North Atlantic, but there have been few studies of its population dynamics in the region. In this paper, we document the seasonal changes in the demographic structure of C finmarchicus in the Irminger Sea from a field programme during 2001/2002, and the associations between its developmental stages and various apparent bio-physical zones. Overwintering stages were found widely at depth (>500 m) across the Irminger Sea, and surviving females were widely distributed in the surface waters the following spring. However, recruitment of the subsequent generation was concentrated around the fringes of the Irminger Sea basin, along the edges of the Irminger and East Greenland Currents, and not in the central basin. In late summer animals were found descending back to overwintering depths in the Central Irminger Sea. The key factors dictating this pattern of recruitment appear to be (a) the general circulation regime, (b) predation on eggs in the spring, possibly by the surviving GO stock, and (c) mortality of first feeding naupliar stages in the central basin where food concentrations appear to be low throughout the year. We compared the demographic patterns in 2001/2002 with observations from the only previous major survey in 1963 and with data from the Continuous Plankton Recorder (CPR) surveys. In both previous data sets, the basic structure of GO ascent from the central basin and G1 recruitment around the fringes was a robust feature, suggesting that it is a recurrent phenomenon. The Irminger Sea is a complex mixing zone between polar and Atlantic water masses, and it has also been identified as a site of sporadic deep convection. The physical oceanographic characteristics of the region are therefore potentially sensitive to climate fluctuations. Despite this, the abundance of C finmarchicus in the region, as measured by the CPR surveys, ... |
format |
Article in Journal/Newspaper |
author |
Heath, M.R. Rasmussen, J. Ahmed, Y. Allen, J. Anderson, C.I.H. Brierley, A.S. Brown, L. Bunker, A. Cook, K. Davidson, R. Fielding, S. Gurney, W.S.C. Harris, R. Hay, S. Henson, S. Hirst, A.G. Holliday, N.P. Ingvarsdottir, A. Irigoien, X. Lindeque, P. Mayor, D.J. Montagnes, D. Moffat, C. Pollard, R. Richards, S. Saunders, R.A. Sidey, J. Smerdon, G. Speirs, D. Walsham, P. Waniek, J. Webster, L. Wilson, D. |
author_facet |
Heath, M.R. Rasmussen, J. Ahmed, Y. Allen, J. Anderson, C.I.H. Brierley, A.S. Brown, L. Bunker, A. Cook, K. Davidson, R. Fielding, S. Gurney, W.S.C. Harris, R. Hay, S. Henson, S. Hirst, A.G. Holliday, N.P. Ingvarsdottir, A. Irigoien, X. Lindeque, P. Mayor, D.J. Montagnes, D. Moffat, C. Pollard, R. Richards, S. Saunders, R.A. Sidey, J. Smerdon, G. Speirs, D. Walsham, P. Waniek, J. Webster, L. Wilson, D. |
author_sort |
Heath, M.R. |
title |
Spatial demography of Calanus finmarchicus in the Irminger Sea |
title_short |
Spatial demography of Calanus finmarchicus in the Irminger Sea |
title_full |
Spatial demography of Calanus finmarchicus in the Irminger Sea |
title_fullStr |
Spatial demography of Calanus finmarchicus in the Irminger Sea |
title_full_unstemmed |
Spatial demography of Calanus finmarchicus in the Irminger Sea |
title_sort |
spatial demography of calanus finmarchicus in the irminger sea |
publisher |
Elsevier |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11513/ |
long_lat |
ENVELOPE(43.000,43.000,73.500,73.500) ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Central Basin Greenland Irminger Sea |
geographic_facet |
Central Basin Greenland Irminger Sea |
genre |
Calanus finmarchicus East Greenland Greenland North Atlantic |
genre_facet |
Calanus finmarchicus East Greenland Greenland North Atlantic |
op_relation |
Heath, M.R.; Rasmussen, J.; Ahmed, Y.; Allen, J.; Anderson, C.I.H.; Brierley, A.S.; Brown, L.; Bunker, A.; Cook, K.; Davidson, R.; Fielding, S.; Gurney, W.S.C.; Harris, R.; Hay, S.; Henson, S.; Hirst, A.G.; Holliday, N.P. orcid:0000-0002-9733-8002 Ingvarsdottir, A.; Irigoien, X.; Lindeque, P.; Mayor, D.J. orcid:0000-0002-1295-0041 Montagnes, D.; Moffat, C.; Pollard, R.; Richards, S.; Saunders, R.A.; Sidey, J.; Smerdon, G.; Speirs, D.; Walsham, P.; Waniek, J.; Webster, L.; Wilson, D. 2008 Spatial demography of Calanus finmarchicus in the Irminger Sea. Progress in Oceanography, 76 (1). 39-88. https://doi.org/10.1016/j.pocean.2007.10.001 <https://doi.org/10.1016/j.pocean.2007.10.001> |
op_doi |
https://doi.org/10.1016/j.pocean.2007.10.001 |
container_title |
Progress in Oceanography |
container_volume |
76 |
container_issue |
1 |
container_start_page |
39 |
op_container_end_page |
88 |
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1766382953277947904 |