The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions
Sound knowledge of present-day diatom species and their environments is crucial when attempting to reconstruct past climate and environmental changes based on fossil assemblages. For the North Atlantic region, the biogeography and ecology of many diatom taxa that are used as indicator-species in pal...
Published in: | Marine Micropaleontology |
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Elsevier Scientific Publ. Co
2021
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Online Access: | http://hdl.handle.net/10138/327292 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/327292 2024-01-07T09:42:54+01:00 The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions Oksman, Mimmi Juggins, Stephen Miettinen, Arto Ilmari Witkowski, Andrzej Weckström, Kaarina Department of Geosciences and Geography Environmental Change Research Unit (ECRU) Environmental Sciences 2021-03-01T22:48:55Z 28 application/pdf http://hdl.handle.net/10138/327292 eng eng Elsevier Scientific Publ. Co 10.1016/j.marmicro.2019.02.002 Oksman , M , Juggins , S , Miettinen , A I , Witkowski , A & Weckström , K 2019 , ' The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions ' , Marine Micropaleontology , vol. 148 , pp. 1-28 . https://doi.org/10.1016/j.marmicro.2019.02.002 ORCID: /0000-0002-3889-0788/work/55352140 ORCID: /0000-0003-4537-2556/work/68614884 85062295013 b191ebd3-c8f0-4a51-8e8e-92cf434bec57 http://hdl.handle.net/10138/327292 000467512500001 openAccess info:eu-repo/semantics/openAccess 1181 Ecology evolutionary biology Diatoms Calibration dataset Northern hemisphere Sea surface temperature Sea ice SEA-SURFACE TEMPERATURE WEST GREENLAND ICE VARIABILITY OCEANOGRAPHIC CONDITIONS HOLOCENE CLIMATE DISKO BUGT ICELAND BAY SEDIMENTS RECORD Article acceptedVersion 2021 ftunivhelsihelda 2023-12-14T00:10:31Z Sound knowledge of present-day diatom species and their environments is crucial when attempting to reconstruct past climate and environmental changes based on fossil assemblages. For the North Atlantic region, the biogeography and ecology of many diatom taxa that are used as indicator-species in paleoceanographic studies are still not well known. Using information contained in large diatom-environment calibration datasets can greatly increase our knowledge on diatom taxa and improve the accuracy of paleoenvironmental reconstructions. A diatom calibration dataset including 183 surface sediment samples from the northern North Atlantic was used to explore the distribution and ecology of 21 common Northern Hemisphere diatom taxa. We define the ecological responses of these species to April sea ice concentrations and August sea surface temperatures (aSSTs) using Huisman-Olff-Fresco (HOF)-response curves, provide distribution maps, temperature optima and ranges, and high-quality light microscope images. Based on the results, we find species clearly associated with cold, warm and temperate waters. All species have a statistically significant relationship with aSST, and 15 species with sea ice. Of these, Actinocyclus curvatulus, Fragilariopsis oceanica and Porosira glacialis are most abundant at high sea ice concentrations, whereas Coscinodiscus radiants, Shionodiscus oestrupii, Thalassionema nitzschioides, Thalassiosira angulata, Thalassiosira nordenskioeldii and Thalassiosira pacifica are associated with low sea ice concentrations/ice-free conditions. Interestingly, some species frequently used as sea ice indicators, such as Fragilariopsis cylindrus, show similar abundances at high and low sea ice concentrations with no statistically significant relationship to sea ice. Peer reviewed Article in Journal/Newspaper Disko bugt Greenland Iceland North Atlantic Sea ice HELDA – University of Helsinki Open Repository Greenland Marine Micropaleontology 148 1 28 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
1181 Ecology evolutionary biology Diatoms Calibration dataset Northern hemisphere Sea surface temperature Sea ice SEA-SURFACE TEMPERATURE WEST GREENLAND ICE VARIABILITY OCEANOGRAPHIC CONDITIONS HOLOCENE CLIMATE DISKO BUGT ICELAND BAY SEDIMENTS RECORD |
spellingShingle |
1181 Ecology evolutionary biology Diatoms Calibration dataset Northern hemisphere Sea surface temperature Sea ice SEA-SURFACE TEMPERATURE WEST GREENLAND ICE VARIABILITY OCEANOGRAPHIC CONDITIONS HOLOCENE CLIMATE DISKO BUGT ICELAND BAY SEDIMENTS RECORD Oksman, Mimmi Juggins, Stephen Miettinen, Arto Ilmari Witkowski, Andrzej Weckström, Kaarina The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
topic_facet |
1181 Ecology evolutionary biology Diatoms Calibration dataset Northern hemisphere Sea surface temperature Sea ice SEA-SURFACE TEMPERATURE WEST GREENLAND ICE VARIABILITY OCEANOGRAPHIC CONDITIONS HOLOCENE CLIMATE DISKO BUGT ICELAND BAY SEDIMENTS RECORD |
description |
Sound knowledge of present-day diatom species and their environments is crucial when attempting to reconstruct past climate and environmental changes based on fossil assemblages. For the North Atlantic region, the biogeography and ecology of many diatom taxa that are used as indicator-species in paleoceanographic studies are still not well known. Using information contained in large diatom-environment calibration datasets can greatly increase our knowledge on diatom taxa and improve the accuracy of paleoenvironmental reconstructions. A diatom calibration dataset including 183 surface sediment samples from the northern North Atlantic was used to explore the distribution and ecology of 21 common Northern Hemisphere diatom taxa. We define the ecological responses of these species to April sea ice concentrations and August sea surface temperatures (aSSTs) using Huisman-Olff-Fresco (HOF)-response curves, provide distribution maps, temperature optima and ranges, and high-quality light microscope images. Based on the results, we find species clearly associated with cold, warm and temperate waters. All species have a statistically significant relationship with aSST, and 15 species with sea ice. Of these, Actinocyclus curvatulus, Fragilariopsis oceanica and Porosira glacialis are most abundant at high sea ice concentrations, whereas Coscinodiscus radiants, Shionodiscus oestrupii, Thalassionema nitzschioides, Thalassiosira angulata, Thalassiosira nordenskioeldii and Thalassiosira pacifica are associated with low sea ice concentrations/ice-free conditions. Interestingly, some species frequently used as sea ice indicators, such as Fragilariopsis cylindrus, show similar abundances at high and low sea ice concentrations with no statistically significant relationship to sea ice. Peer reviewed |
author2 |
Department of Geosciences and Geography Environmental Change Research Unit (ECRU) Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Oksman, Mimmi Juggins, Stephen Miettinen, Arto Ilmari Witkowski, Andrzej Weckström, Kaarina |
author_facet |
Oksman, Mimmi Juggins, Stephen Miettinen, Arto Ilmari Witkowski, Andrzej Weckström, Kaarina |
author_sort |
Oksman, Mimmi |
title |
The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
title_short |
The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
title_full |
The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
title_fullStr |
The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
title_full_unstemmed |
The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions |
title_sort |
biogeography and ecology of common diatom species in the northern north atlantic, and their implications for paleoceanographic reconstructions |
publisher |
Elsevier Scientific Publ. Co |
publishDate |
2021 |
url |
http://hdl.handle.net/10138/327292 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Disko bugt Greenland Iceland North Atlantic Sea ice |
genre_facet |
Disko bugt Greenland Iceland North Atlantic Sea ice |
op_relation |
10.1016/j.marmicro.2019.02.002 Oksman , M , Juggins , S , Miettinen , A I , Witkowski , A & Weckström , K 2019 , ' The biogeography and ecology of common diatom species in the northern North Atlantic, and their implications for paleoceanographic reconstructions ' , Marine Micropaleontology , vol. 148 , pp. 1-28 . https://doi.org/10.1016/j.marmicro.2019.02.002 ORCID: /0000-0002-3889-0788/work/55352140 ORCID: /0000-0003-4537-2556/work/68614884 85062295013 b191ebd3-c8f0-4a51-8e8e-92cf434bec57 http://hdl.handle.net/10138/327292 000467512500001 |
op_rights |
openAccess info:eu-repo/semantics/openAccess |
container_title |
Marine Micropaleontology |
container_volume |
148 |
container_start_page |
1 |
op_container_end_page |
28 |
_version_ |
1787424155239448576 |