DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY
International audience A data base of 179 reference sites documents the relations between the assemblages of organic-walled dinoflagellate cysts and sea-surface temperature, salinity, and seasonality throughout the North Atlantic, adjacent subpolar basins (Labrador Sea, Baffin Bay, Irminger and Icel...
Published in: | Canadian Journal of Earth Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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1994
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Online Access: | https://doi.org/10.1139/e94-006 https://hal.archives-ouvertes.fr/hal-01457661 |
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fttriple:oai:gotriple.eu:10670/1.jegh68 2023-05-15T15:35:06+02:00 DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY DE VERNAL, A TURON, JL Guiot, Joel Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP) Université Paul Cézanne - Aix-Marseille 3-Centre National de la Recherche Scientifique (CNRS)-Avignon Université (AU)-Université de Provence - Aix-Marseille 1 1994-01-01 https://doi.org/10.1139/e94-006 https://hal.archives-ouvertes.fr/hal-01457661 en eng HAL CCSD National Research Council Canada hal-01457661 doi:10.1139/e94-006 10670/1.jegh68 https://hal.archives-ouvertes.fr/hal-01457661 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0008-4077 EISSN: 1480-3313 Canadian journal of earth sciences Canadian journal of earth sciences, National Research Council Canada, 1994, 31 (1), pp.48-62. ⟨10.1139/e94-006⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1994 fttriple https://doi.org/10.1139/e94-006 2023-01-22T18:13:07Z International audience A data base of 179 reference sites documents the relations between the assemblages of organic-walled dinoflagellate cysts and sea-surface temperature, salinity, and seasonality throughout the North Atlantic, adjacent subpolar basins (Labrador Sea, Baffin Bay, Irminger and Iceland basins) and epicontinental environments off eastern Canada (estuary and Gulf of St. Lawrence, Hudson Bay). Principal-component analyses show close relationships between dinoflagellate cyst data and sea-surface conditions: the first component (71.1 % of the variance) correlates with the winter temperature, salinity, and seasonal duration of sea-ice cover, whereas the second component (11.3 % of the variance) appears mainly related to summer temperature. Transfer functions using the best analogue method were tested by reconstructing modern sea-surface conditions on the basis of the reference dinoflagellate cyst assemblages. The correlation coefficient between instrumental averages and reconstructed values ranges from 0.87 (August temperature) to 0.97 (annual duration of sea-ice cover). These transfer functions appear most accurate for the reconstruction of sea-surface conditions in marginal marine environments of high-latitude basins. The only reservation concerns the validity of reconstruction in offshore regions characterized by low productivity where sparse cyst fluxes may result from long-distance transport through currents. The transfer functions that were applied in, as an example, a late Quaternary sequence of the Davis Strait in the northern Labrador Sea, notably suggest seasonal sea-ice cover extent of 6 - 10 months/year and August temperature and salinity of 1-4-degrees-C and 31 - 33 parts per thousand, respectively, during the last glacial optimum (isotopic stage 2). Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Davis Strait Hudson Bay Iceland Labrador Sea North Atlantic Sea ice Unknown Baffin Bay Canada Hudson Hudson Bay Canadian Journal of Earth Sciences 31 1 48 62 |
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English |
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envir geo DE VERNAL, A TURON, JL Guiot, Joel DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
topic_facet |
envir geo |
description |
International audience A data base of 179 reference sites documents the relations between the assemblages of organic-walled dinoflagellate cysts and sea-surface temperature, salinity, and seasonality throughout the North Atlantic, adjacent subpolar basins (Labrador Sea, Baffin Bay, Irminger and Iceland basins) and epicontinental environments off eastern Canada (estuary and Gulf of St. Lawrence, Hudson Bay). Principal-component analyses show close relationships between dinoflagellate cyst data and sea-surface conditions: the first component (71.1 % of the variance) correlates with the winter temperature, salinity, and seasonal duration of sea-ice cover, whereas the second component (11.3 % of the variance) appears mainly related to summer temperature. Transfer functions using the best analogue method were tested by reconstructing modern sea-surface conditions on the basis of the reference dinoflagellate cyst assemblages. The correlation coefficient between instrumental averages and reconstructed values ranges from 0.87 (August temperature) to 0.97 (annual duration of sea-ice cover). These transfer functions appear most accurate for the reconstruction of sea-surface conditions in marginal marine environments of high-latitude basins. The only reservation concerns the validity of reconstruction in offshore regions characterized by low productivity where sparse cyst fluxes may result from long-distance transport through currents. The transfer functions that were applied in, as an example, a late Quaternary sequence of the Davis Strait in the northern Labrador Sea, notably suggest seasonal sea-ice cover extent of 6 - 10 months/year and August temperature and salinity of 1-4-degrees-C and 31 - 33 parts per thousand, respectively, during the last glacial optimum (isotopic stage 2). |
author2 |
Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP) Université Paul Cézanne - Aix-Marseille 3-Centre National de la Recherche Scientifique (CNRS)-Avignon Université (AU)-Université de Provence - Aix-Marseille 1 |
format |
Article in Journal/Newspaper |
author |
DE VERNAL, A TURON, JL Guiot, Joel |
author_facet |
DE VERNAL, A TURON, JL Guiot, Joel |
author_sort |
DE VERNAL, A |
title |
DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
title_short |
DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
title_full |
DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
title_fullStr |
DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
title_full_unstemmed |
DINOFLAGELLATE CYST DISTRIBUTION IN HIGH-LATITUDE MARINE ENVIRONMENTS AND QUANTITATIVE RECONSTRUCTION OF SEA-SURFACE SALINITY, TEMPERATURE, AND SEASONALITY |
title_sort |
dinoflagellate cyst distribution in high-latitude marine environments and quantitative reconstruction of sea-surface salinity, temperature, and seasonality |
publisher |
HAL CCSD |
publishDate |
1994 |
url |
https://doi.org/10.1139/e94-006 https://hal.archives-ouvertes.fr/hal-01457661 |
geographic |
Baffin Bay Canada Hudson Hudson Bay |
geographic_facet |
Baffin Bay Canada Hudson Hudson Bay |
genre |
Baffin Bay Baffin Bay Baffin Davis Strait Hudson Bay Iceland Labrador Sea North Atlantic Sea ice |
genre_facet |
Baffin Bay Baffin Bay Baffin Davis Strait Hudson Bay Iceland Labrador Sea North Atlantic Sea ice |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0008-4077 EISSN: 1480-3313 Canadian journal of earth sciences Canadian journal of earth sciences, National Research Council Canada, 1994, 31 (1), pp.48-62. ⟨10.1139/e94-006⟩ |
op_relation |
hal-01457661 doi:10.1139/e94-006 10670/1.jegh68 https://hal.archives-ouvertes.fr/hal-01457661 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/e94-006 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
31 |
container_issue |
1 |
container_start_page |
48 |
op_container_end_page |
62 |
_version_ |
1766365396900773888 |