Water column stratification and Calanus finmarchicus
International audience Many authors have suggested that the abundance of the subarctic species Calanus finmarchicus can be influenced by the structure of the water column. Unfortunately, to date, such a link has never been confirmed either experimentally or statistically. By using a macroecological...
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ftunivlille:oai:HAL:hal-00767776v1 2024-06-23T07:51:53+00:00 Water column stratification and Calanus finmarchicus Reygondeau, G. Beaugrand, Gregory Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) 2010-08-10 https://hal.science/hal-00767776 https://doi.org/10.1093/plankt/fbq091 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/plankt/fbq091 hal-00767776 https://hal.science/hal-00767776 doi:10.1093/plankt/fbq091 ISSN: 0142-7873 EISSN: 1464-3774 Journal of Plankton Research https://hal.science/hal-00767776 Journal of Plankton Research, 2010, 33, pp.119-136. ⟨10.1093/plankt/fbq091⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2010 ftunivlille https://doi.org/10.1093/plankt/fbq091 2024-06-10T14:26:43Z International audience Many authors have suggested that the abundance of the subarctic species Calanus finmarchicus can be influenced by the structure of the water column. Unfortunately, to date, such a link has never been confirmed either experimentally or statistically. By using a macroecological approach, we investigated this hypothesis and showed that it varies with the developmental stage of the species. First, we implemented a new statistical procedure, based on an exponentially weighted moving average, to identify and quantify the depth and intensity of the thermocline. We applied the technique on 1 005 619 temperature profiles over the North Atlantic Ocean and provide a mapping of these two descriptors at a seasonal scale. Second, we studied the relationships between the depth and the intensity of the thermocline and C. finmarchicus using a biological data set of 99 599 sampling stations. Our results suggested that the characteristics of the water column influence the spatial distribution of C. finmarchicus. The frequency in the occurrence of this species decreases when stratification rises. Our results further revealed that the effect is more pronounced for young copepodite stages. Such findings are of interest, since, in a warmer world, water stratification is expected to increase, making more likely a reduction in the abundance of this key species in the North Atlantic Article in Journal/Newspaper Calanus finmarchicus North Atlantic Subarctic LillOA (HAL Lille Open Archive, Université de Lille) Journal of Plankton Research 33 1 119 136 |
institution |
Open Polar |
collection |
LillOA (HAL Lille Open Archive, Université de Lille) |
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ftunivlille |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Reygondeau, G. Beaugrand, Gregory Water column stratification and Calanus finmarchicus |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Many authors have suggested that the abundance of the subarctic species Calanus finmarchicus can be influenced by the structure of the water column. Unfortunately, to date, such a link has never been confirmed either experimentally or statistically. By using a macroecological approach, we investigated this hypothesis and showed that it varies with the developmental stage of the species. First, we implemented a new statistical procedure, based on an exponentially weighted moving average, to identify and quantify the depth and intensity of the thermocline. We applied the technique on 1 005 619 temperature profiles over the North Atlantic Ocean and provide a mapping of these two descriptors at a seasonal scale. Second, we studied the relationships between the depth and the intensity of the thermocline and C. finmarchicus using a biological data set of 99 599 sampling stations. Our results suggested that the characteristics of the water column influence the spatial distribution of C. finmarchicus. The frequency in the occurrence of this species decreases when stratification rises. Our results further revealed that the effect is more pronounced for young copepodite stages. Such findings are of interest, since, in a warmer world, water stratification is expected to increase, making more likely a reduction in the abundance of this key species in the North Atlantic |
author2 |
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) |
format |
Article in Journal/Newspaper |
author |
Reygondeau, G. Beaugrand, Gregory |
author_facet |
Reygondeau, G. Beaugrand, Gregory |
author_sort |
Reygondeau, G. |
title |
Water column stratification and Calanus finmarchicus |
title_short |
Water column stratification and Calanus finmarchicus |
title_full |
Water column stratification and Calanus finmarchicus |
title_fullStr |
Water column stratification and Calanus finmarchicus |
title_full_unstemmed |
Water column stratification and Calanus finmarchicus |
title_sort |
water column stratification and calanus finmarchicus |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00767776 https://doi.org/10.1093/plankt/fbq091 |
genre |
Calanus finmarchicus North Atlantic Subarctic |
genre_facet |
Calanus finmarchicus North Atlantic Subarctic |
op_source |
ISSN: 0142-7873 EISSN: 1464-3774 Journal of Plankton Research https://hal.science/hal-00767776 Journal of Plankton Research, 2010, 33, pp.119-136. ⟨10.1093/plankt/fbq091⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/plankt/fbq091 hal-00767776 https://hal.science/hal-00767776 doi:10.1093/plankt/fbq091 |
op_doi |
https://doi.org/10.1093/plankt/fbq091 |
container_title |
Journal of Plankton Research |
container_volume |
33 |
container_issue |
1 |
container_start_page |
119 |
op_container_end_page |
136 |
_version_ |
1802643035400437760 |