Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113
Palynological analyses were performed on 53 surface sediment samples from the North Pacific Ocean, including the Bering and Okhotsk Seas (37-64°N, 144°E-148°W), in order to document the relationships between the dinocyst distribution and sea-surface conditions (temperatures, salinities, primary prod...
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Format: | Article in Journal/Newspaper |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2012
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Online Access: | https://dx.doi.org/10.1594/pangaea.807216 https://doi.pangaea.de/10.1594/PANGAEA.807216 |
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ftdatacite:10.1594/pangaea.807216 |
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openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
International Polar Year 2007-2008 IPY |
spellingShingle |
International Polar Year 2007-2008 IPY Bonnet, Sophie de Vernal, Anne Gersonde, Rainer Lembke-Jene, Lester Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
topic_facet |
International Polar Year 2007-2008 IPY |
description |
Palynological analyses were performed on 53 surface sediment samples from the North Pacific Ocean, including the Bering and Okhotsk Seas (37-64°N, 144°E-148°W), in order to document the relationships between the dinocyst distribution and sea-surface conditions (temperatures, salinities, primary productivity and sea-ice cover). Samples are characterized by concentrations ranging from 18 to 143816 cysts/cm**3 and the occurrence of 32 species. A canonical correspondence analysis (CCA) was carried out to determine the relationship between environmental variables and the distribution of dinocyst taxa. The first and second axes represent, respectively, 47% and 17.8% of the canonical variance. Axis 1 is positively correlated with all parameters except to the sea-ice and primary productivity in August, which are on the negative side. Results indicate that the composition of dinocyst assemblages is mostly controlled by temperature and that all environmental variables are correlated together. The CCA distinguishes 3 groups of dinocysts: the heterotrophic taxa, the genera Impagidinium and Spiniferites as well as the cyst of Pentapharsodinium dalei and Operculodinium centrocarpum. Five assemblage zones can be distinguished: 1) the Okhotsk Sea zone, which is associated to temperate and eutrophic conditions, seasonal upwellings and Amur River discharges. It is characterized by the dominance of O. centrocarpum, Brigantedinium spp. and Islandinium minutum; 2) the Western Subarctic Gyre zone with subpolar and mesotrophic conditions due to the Kamchatka Current and Alaska Stream inflows. Assemblages are dominated by Nematosphaeropsis labyrinthus, Pyxidinopsis reticulata and Brigantedinium spp.; 3) the Bering Sea zone, depicting a subpolar environment, influenced by seasonal upwellings and inputs from the Anadyr and Yukon Rivers. It is characterized by the dominance of I. minutum and Brigantedinium spp.; 4) the Alaska Gyre zone with temperate conditions and nutrient-enriched surface waters, which is dominated by N. labyrinthus and Brigantedinium spp. and 5) the Kuroshio Extension-North Pacific-Subarctic Current zone characterized by a subtropical and oligotrophic environment, which is dominated by O. centrocarpum, N. labyrinthus and warm taxa of the genus Impagidinium.Transfer functions were tested using the modern analog technique (MAT) on the North Pacific Ocean (= 359 sites) and the entire Northern Hemisphere databases ( = 1419 sites). Results confirm that the updated Northern Hemisphere database is suitable for further paleoenvironmental reconstructions, and the best results are obtained for temperatures with an accuracy of +/-1.7 °C. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Article in Journal/Newspaper |
author |
Bonnet, Sophie de Vernal, Anne Gersonde, Rainer Lembke-Jene, Lester |
author_facet |
Bonnet, Sophie de Vernal, Anne Gersonde, Rainer Lembke-Jene, Lester |
author_sort |
Bonnet, Sophie |
title |
Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
title_short |
Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
title_full |
Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
title_fullStr |
Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
title_full_unstemmed |
Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 |
title_sort |
palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the north pacific, supplement to: bonnet, sophie; de vernal, anne; gersonde, rainer; lembke-jene, lester (2012): modern distribution of dinocysts from the north pacific ocean (37-64°n, 144°e-148°w) in relation to hydrographic conditions, sea-ice and productivity. marine micropaleontology, 84-85, 87-113 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2012 |
url |
https://dx.doi.org/10.1594/pangaea.807216 https://doi.pangaea.de/10.1594/PANGAEA.807216 |
long_lat |
ENVELOPE(-62.583,-62.583,-64.900,-64.900) ENVELOPE(177.510,177.510,64.734,64.734) ENVELOPE(176.233,176.233,64.882,64.882) |
geographic |
Yukon Bering Sea Okhotsk Pacific Lester Anadyr Anadyr’ |
geographic_facet |
Yukon Bering Sea Okhotsk Pacific Lester Anadyr Anadyr’ |
genre |
Anadyr Anadyr' Bering Sea International Polar Year IPY Kamchatka okhotsk sea Sea ice Subarctic Alaska Yukon |
genre_facet |
Anadyr Anadyr' Bering Sea International Polar Year IPY Kamchatka okhotsk sea Sea ice Subarctic Alaska Yukon |
op_relation |
https://dx.doi.org/10.1016/j.marmicro.2011.11.006 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.807216 https://doi.org/10.1016/j.marmicro.2011.11.006 |
_version_ |
1766380938291314688 |
spelling |
ftdatacite:10.1594/pangaea.807216 2023-05-15T13:24:42+02:00 Palynology and dinoflagellate counts of surface sediments, and sea surface conditions, of sites in the North Pacific, supplement to: Bonnet, Sophie; de Vernal, Anne; Gersonde, Rainer; Lembke-Jene, Lester (2012): Modern distribution of dinocysts from the North Pacific Ocean (37-64°N, 144°E-148°W) in relation to hydrographic conditions, sea-ice and productivity. Marine Micropaleontology, 84-85, 87-113 Bonnet, Sophie de Vernal, Anne Gersonde, Rainer Lembke-Jene, Lester 2012 application/zip https://dx.doi.org/10.1594/pangaea.807216 https://doi.pangaea.de/10.1594/PANGAEA.807216 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.marmicro.2011.11.006 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY International Polar Year 2007-2008 IPY Collection article Supplementary Collection of Datasets 2012 ftdatacite https://doi.org/10.1594/pangaea.807216 https://doi.org/10.1016/j.marmicro.2011.11.006 2021-11-05T12:55:41Z Palynological analyses were performed on 53 surface sediment samples from the North Pacific Ocean, including the Bering and Okhotsk Seas (37-64°N, 144°E-148°W), in order to document the relationships between the dinocyst distribution and sea-surface conditions (temperatures, salinities, primary productivity and sea-ice cover). Samples are characterized by concentrations ranging from 18 to 143816 cysts/cm**3 and the occurrence of 32 species. A canonical correspondence analysis (CCA) was carried out to determine the relationship between environmental variables and the distribution of dinocyst taxa. The first and second axes represent, respectively, 47% and 17.8% of the canonical variance. Axis 1 is positively correlated with all parameters except to the sea-ice and primary productivity in August, which are on the negative side. Results indicate that the composition of dinocyst assemblages is mostly controlled by temperature and that all environmental variables are correlated together. The CCA distinguishes 3 groups of dinocysts: the heterotrophic taxa, the genera Impagidinium and Spiniferites as well as the cyst of Pentapharsodinium dalei and Operculodinium centrocarpum. Five assemblage zones can be distinguished: 1) the Okhotsk Sea zone, which is associated to temperate and eutrophic conditions, seasonal upwellings and Amur River discharges. It is characterized by the dominance of O. centrocarpum, Brigantedinium spp. and Islandinium minutum; 2) the Western Subarctic Gyre zone with subpolar and mesotrophic conditions due to the Kamchatka Current and Alaska Stream inflows. Assemblages are dominated by Nematosphaeropsis labyrinthus, Pyxidinopsis reticulata and Brigantedinium spp.; 3) the Bering Sea zone, depicting a subpolar environment, influenced by seasonal upwellings and inputs from the Anadyr and Yukon Rivers. It is characterized by the dominance of I. minutum and Brigantedinium spp.; 4) the Alaska Gyre zone with temperate conditions and nutrient-enriched surface waters, which is dominated by N. labyrinthus and Brigantedinium spp. and 5) the Kuroshio Extension-North Pacific-Subarctic Current zone characterized by a subtropical and oligotrophic environment, which is dominated by O. centrocarpum, N. labyrinthus and warm taxa of the genus Impagidinium.Transfer functions were tested using the modern analog technique (MAT) on the North Pacific Ocean (= 359 sites) and the entire Northern Hemisphere databases ( = 1419 sites). Results confirm that the updated Northern Hemisphere database is suitable for further paleoenvironmental reconstructions, and the best results are obtained for temperatures with an accuracy of +/-1.7 °C. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Article in Journal/Newspaper Anadyr Anadyr' Bering Sea International Polar Year IPY Kamchatka okhotsk sea Sea ice Subarctic Alaska Yukon DataCite Metadata Store (German National Library of Science and Technology) Yukon Bering Sea Okhotsk Pacific Lester ENVELOPE(-62.583,-62.583,-64.900,-64.900) Anadyr ENVELOPE(177.510,177.510,64.734,64.734) Anadyr’ ENVELOPE(176.233,176.233,64.882,64.882) |