Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives
We present the combined abundance of all extant fossilizable planktonic groups (Dinoflagellates, Coccolithophores, Silicoflagellates, Diatoms, Parmales, Archaeomonads and micro-zooplankton) from surface waters collected along a latitudinal transect in the western Pacific sector of the Southern Ocean...
Published in: | Marine Micropaleontology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2016
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Online Access: | http://hdl.handle.net/10281/102026 https://doi.org/10.1016/j.marmicro.2016.01.001 http://www.sciencedirect.com/science/journal/03778398/90 |
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ftunivmilanobic:oai:boa.unimib.it:10281/102026 2024-04-14T08:03:40+00:00 Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives MALINVERNO, ELISA MAFFIOLI, PAOLA Gariboldi, K. Malinverno, E Maffioli, P Gariboldi, K 2016 http://hdl.handle.net/10281/102026 https://doi.org/10.1016/j.marmicro.2016.01.001 http://www.sciencedirect.com/science/journal/03778398/90 eng eng Elsevier country:NL info:eu-repo/semantics/altIdentifier/wos/WOS:000371552400004 volume:123 firstpage:41 lastpage:58 numberofpages:18 journal:MARINE MICROPALEONTOLOGY http://hdl.handle.net/10281/102026 doi:10.1016/j.marmicro.2016.01.001 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84955266411 http://www.sciencedirect.com/science/journal/03778398/90 Archaeomonad Biogeography Coccolithophore Corona-index Diatom Dinoflagellate Parmale Silicoflagellate Southern Ocean Oceanography Paleontology GEO/01 - PALEONTOLOGIA E PALEOECOLOGIA info:eu-repo/semantics/article 2016 ftunivmilanobic https://doi.org/10.1016/j.marmicro.2016.01.001 2024-03-21T16:52:29Z We present the combined abundance of all extant fossilizable planktonic groups (Dinoflagellates, Coccolithophores, Silicoflagellates, Diatoms, Parmales, Archaeomonads and micro-zooplankton) from surface waters collected along a latitudinal transect in the western Pacific sector of the Southern Ocean, ranging from ∼ 48°S, offshore New Zealand, to ∼ 70°S in the Ross Sea, Antarctica. Latitudinal shifts in species' distribution correspond with the Antarctic Circumpolar Current fronts and with the seasonal position of the ice-edge. Distinct bioprovinces are defined by clustering samples with a high degree of similarity. Our data confirm the importance of previously-defined taxa as palaeoceanographic proxies but also reveal some differences: the shift in dominance between the silicoflagellates genera Dictyocha and Stephanocha, used as a proxy of palaeo sea-surface temperatures, occurs slightly north of the Southern Sub-Antarctic Front rather than at the Polar Front; the shifts in abundance between the open-ocean diatom species Fragilariopsis kerguelensis and sea-ice related F. curta and F. cylindrus, as well as the drop in the coccolithophore Emiliania huxleyi, occur at the southern Antarctic Circumpolar Front rather than at the Polar Front. Finally, we introduce the Corona-index, based on the ratio of the coronatid to non-coronatid silicoflagellates species Stephanocha speculum, as a new proxy for sea-ice and we confirm the occurrence of abundant Archaeomonads and Parmales (Triparma laevis subsp. ramispina) in the marginal ice-edge zone. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic New Zealand Pacific Ross Sea Southern Ocean The Antarctic Marine Micropaleontology 123 41 58 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
Archaeomonad Biogeography Coccolithophore Corona-index Diatom Dinoflagellate Parmale Silicoflagellate Southern Ocean Oceanography Paleontology GEO/01 - PALEONTOLOGIA E PALEOECOLOGIA |
spellingShingle |
Archaeomonad Biogeography Coccolithophore Corona-index Diatom Dinoflagellate Parmale Silicoflagellate Southern Ocean Oceanography Paleontology GEO/01 - PALEONTOLOGIA E PALEOECOLOGIA MALINVERNO, ELISA MAFFIOLI, PAOLA Gariboldi, K. Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
topic_facet |
Archaeomonad Biogeography Coccolithophore Corona-index Diatom Dinoflagellate Parmale Silicoflagellate Southern Ocean Oceanography Paleontology GEO/01 - PALEONTOLOGIA E PALEOECOLOGIA |
description |
We present the combined abundance of all extant fossilizable planktonic groups (Dinoflagellates, Coccolithophores, Silicoflagellates, Diatoms, Parmales, Archaeomonads and micro-zooplankton) from surface waters collected along a latitudinal transect in the western Pacific sector of the Southern Ocean, ranging from ∼ 48°S, offshore New Zealand, to ∼ 70°S in the Ross Sea, Antarctica. Latitudinal shifts in species' distribution correspond with the Antarctic Circumpolar Current fronts and with the seasonal position of the ice-edge. Distinct bioprovinces are defined by clustering samples with a high degree of similarity. Our data confirm the importance of previously-defined taxa as palaeoceanographic proxies but also reveal some differences: the shift in dominance between the silicoflagellates genera Dictyocha and Stephanocha, used as a proxy of palaeo sea-surface temperatures, occurs slightly north of the Southern Sub-Antarctic Front rather than at the Polar Front; the shifts in abundance between the open-ocean diatom species Fragilariopsis kerguelensis and sea-ice related F. curta and F. cylindrus, as well as the drop in the coccolithophore Emiliania huxleyi, occur at the southern Antarctic Circumpolar Front rather than at the Polar Front. Finally, we introduce the Corona-index, based on the ratio of the coronatid to non-coronatid silicoflagellates species Stephanocha speculum, as a new proxy for sea-ice and we confirm the occurrence of abundant Archaeomonads and Parmales (Triparma laevis subsp. ramispina) in the marginal ice-edge zone. |
author2 |
Malinverno, E Maffioli, P Gariboldi, K |
format |
Article in Journal/Newspaper |
author |
MALINVERNO, ELISA MAFFIOLI, PAOLA Gariboldi, K. |
author_facet |
MALINVERNO, ELISA MAFFIOLI, PAOLA Gariboldi, K. |
author_sort |
MALINVERNO, ELISA |
title |
Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
title_short |
Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
title_full |
Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
title_fullStr |
Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
title_full_unstemmed |
Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives |
title_sort |
latitudinal distribution of extant fossilizable phytoplankton in the southern ocean: planktonic provinces, hydrographic fronts and palaeoecological perspectives |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://hdl.handle.net/10281/102026 https://doi.org/10.1016/j.marmicro.2016.01.001 http://www.sciencedirect.com/science/journal/03778398/90 |
geographic |
Antarctic New Zealand Pacific Ross Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic New Zealand Pacific Ross Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000371552400004 volume:123 firstpage:41 lastpage:58 numberofpages:18 journal:MARINE MICROPALEONTOLOGY http://hdl.handle.net/10281/102026 doi:10.1016/j.marmicro.2016.01.001 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84955266411 http://www.sciencedirect.com/science/journal/03778398/90 |
op_doi |
https://doi.org/10.1016/j.marmicro.2016.01.001 |
container_title |
Marine Micropaleontology |
container_volume |
123 |
container_start_page |
41 |
op_container_end_page |
58 |
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1796299937986641920 |