Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations
Neogloboquadrina pachyderma is the dominant planktonic foraminifera species in the polar regions. In the northern high-latitude ocean, it makes up more than 90 % of the total assemblages, making it the dominant pelagic calcifier and carrier of paleoceanographic proxies. To assess the reaction of thi...
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2019
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Online Access: | https://doi.org/10.5194/bg-16-3425-2019 https://doaj.org/article/9f2c4dbbdda8483291cbfb21052e1740 |
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ftdoajarticles:oai:doaj.org/article:9f2c4dbbdda8483291cbfb21052e1740 2023-05-15T15:16:32+02:00 Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations M. Greco L. Jonkers K. Kretschmer J. Bijma M. Kucera 2019-09-01T00:00:00Z https://doi.org/10.5194/bg-16-3425-2019 https://doaj.org/article/9f2c4dbbdda8483291cbfb21052e1740 EN eng Copernicus Publications https://www.biogeosciences.net/16/3425/2019/bg-16-3425-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-3425-2019 1726-4170 1726-4189 https://doaj.org/article/9f2c4dbbdda8483291cbfb21052e1740 Biogeosciences, Vol 16, Pp 3425-3437 (2019) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/bg-16-3425-2019 2022-12-31T03:40:38Z Neogloboquadrina pachyderma is the dominant planktonic foraminifera species in the polar regions. In the northern high-latitude ocean, it makes up more than 90 % of the total assemblages, making it the dominant pelagic calcifier and carrier of paleoceanographic proxies. To assess the reaction of this species to a future shaped by climate change and to be able to interpret the paleoecological signal contained in its shells, its depth habitat must be known. Previous work showed that N. pachyderma in the northern polar regions has a highly variable depth habitat, ranging from the surface mixed layer to several hundreds of metres below the surface, and the origin of this variability remained unclear. In order to investigate the factors controlling the depth habitat of N. pachyderma , we compiled new and existing population density profiles from 104 stratified plankton tow hauls collected in the Arctic and the North Atlantic oceans during 14 oceanographic expeditions. For each vertical profile, the depth habitat (DH) was calculated as the abundance-weighted mean depth of occurrence. We then tested to what degree environmental factors (mixed-layer depth, sea surface temperature, sea surface salinity, chlorophyll a concentration, and sea ice concentration) and ecological factors (synchronized reproduction and daily vertical migration) can predict the observed DH variability and compared the observed DH behaviour with simulations by a numerical model predicting planktonic foraminifera distribution. Our data show that the DH of N. pachyderma varies between 25 and 280 m (average ∼100 m). In contrast with the model simulations, which indicate that DH is associated with the depth of chlorophyll maximum, our analysis indicates that the presence of sea ice together with the concentration of chlorophyll a at the surface have the strongest influence on the vertical habitat of this species. N. pachyderma occurs deeper when sea ice and chlorophyll concentrations are low, suggesting a time-transgressive response to the evolution ... Article in Journal/Newspaper Arctic Climate change Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Biogeosciences 16 17 3425 3437 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 M. Greco L. Jonkers K. Kretschmer J. Bijma M. Kucera Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Neogloboquadrina pachyderma is the dominant planktonic foraminifera species in the polar regions. In the northern high-latitude ocean, it makes up more than 90 % of the total assemblages, making it the dominant pelagic calcifier and carrier of paleoceanographic proxies. To assess the reaction of this species to a future shaped by climate change and to be able to interpret the paleoecological signal contained in its shells, its depth habitat must be known. Previous work showed that N. pachyderma in the northern polar regions has a highly variable depth habitat, ranging from the surface mixed layer to several hundreds of metres below the surface, and the origin of this variability remained unclear. In order to investigate the factors controlling the depth habitat of N. pachyderma , we compiled new and existing population density profiles from 104 stratified plankton tow hauls collected in the Arctic and the North Atlantic oceans during 14 oceanographic expeditions. For each vertical profile, the depth habitat (DH) was calculated as the abundance-weighted mean depth of occurrence. We then tested to what degree environmental factors (mixed-layer depth, sea surface temperature, sea surface salinity, chlorophyll a concentration, and sea ice concentration) and ecological factors (synchronized reproduction and daily vertical migration) can predict the observed DH variability and compared the observed DH behaviour with simulations by a numerical model predicting planktonic foraminifera distribution. Our data show that the DH of N. pachyderma varies between 25 and 280 m (average ∼100 m). In contrast with the model simulations, which indicate that DH is associated with the depth of chlorophyll maximum, our analysis indicates that the presence of sea ice together with the concentration of chlorophyll a at the surface have the strongest influence on the vertical habitat of this species. N. pachyderma occurs deeper when sea ice and chlorophyll concentrations are low, suggesting a time-transgressive response to the evolution ... |
format |
Article in Journal/Newspaper |
author |
M. Greco L. Jonkers K. Kretschmer J. Bijma M. Kucera |
author_facet |
M. Greco L. Jonkers K. Kretschmer J. Bijma M. Kucera |
author_sort |
M. Greco |
title |
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
title_short |
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
title_full |
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
title_fullStr |
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
title_full_unstemmed |
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
title_sort |
depth habitat of the planktonic foraminifera neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-3425-2019 https://doaj.org/article/9f2c4dbbdda8483291cbfb21052e1740 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera Sea ice |
genre_facet |
Arctic Climate change Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera Sea ice |
op_source |
Biogeosciences, Vol 16, Pp 3425-3437 (2019) |
op_relation |
https://www.biogeosciences.net/16/3425/2019/bg-16-3425-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-3425-2019 1726-4170 1726-4189 https://doaj.org/article/9f2c4dbbdda8483291cbfb21052e1740 |
op_doi |
https://doi.org/10.5194/bg-16-3425-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
17 |
container_start_page |
3425 |
op_container_end_page |
3437 |
_version_ |
1766346838682632192 |