Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay
We present continuous bi-weekly to bi-monthly dinoflagellate cyst, tintinnid loricae and tintinnid cyst fluxes at two mooring sites in Hudson Bay (subarctic Canada) from October 2005 to September 2006. The total dinoflagellate cyst fluxes at the site on the western side of the bay ranged from 4600 t...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier B.V.
2020
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Online Access: | http://hdl.handle.net/1993/34868 https://doi.org/10.1016/j.marmicro.2016.02.005 |
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/34868 2023-06-18T03:39:42+02:00 Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay Heikkilä, Maija Pospelova, Vera Forest, Alexandre Stern, Gary Fortier, Louis Macdonald, Robie 2020-08-17T22:19:18Z application/pdf http://hdl.handle.net/1993/34868 https://doi.org/10.1016/j.marmicro.2016.02.005 eng eng Elsevier B.V. Heikkilä, M., Pospelova, V., Forest, A., Stern, G. A., Fortier, L., Macdonald, R. W., 2016. Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay. Mar. Micropaleontol. 125: 1–24. https://doi.org/10.1016/j.marmicro.2016.02.005. http://hdl.handle.net/1993/34868 doi:10.1016/j.marmicro.2016.02.005 open access dinoflagellate cyst sea ice Hudson Bay Arctic sediment trap phytoplankton dynamics tintinnid loricae ciliate Article 2020 ftunivmanitoba https://doi.org/10.1016/j.marmicro.2016.02.005 2023-06-04T17:43:47Z We present continuous bi-weekly to bi-monthly dinoflagellate cyst, tintinnid loricae and tintinnid cyst fluxes at two mooring sites in Hudson Bay (subarctic Canada) from October 2005 to September 2006. The total dinoflagellate cyst fluxes at the site on the western side of the bay ranged from 4600 to 53,600 cysts m−2 day−1 (average 20,000 cysts m−2 day−1 ), while on average three times higher fluxes (average 62,300 cysts m−2 day−1 ) were recorded at the site on the eastern side of the bay with a range from 2700 to 394,800 cysts m−2 day−1 . These values are equivalent to the average fluxes calculated from the top 1-cm sediment layer of 210Pb-dated box cores at corresponding locations, and hence lend support to the use of sediment dinoflagellate cysts in palaeoceanography. Tintinnid fluxes ranged from 1200 to 80,000 specimens m−2 day−1 (average 32,100 tintinnids m−2 day−1 ) in the west, and 1600 to 1,240,800 specimens m−2 day−1 (average 106,800 tintinnids m−2 day−1 ) in the east, with the highest Salpingella sp. fluxes recorded during the sea-ice cover season. The dinoflagellate cyst species diversity recorded in the traps was similar at the two environmentally differing locations, with cold-water (e.g., Echinidinium karaense, Islandinium minutum, Islandinium? cezare, Polykrikos sp. var. arctica, Spiniferites elongatus), cosmopolitan (e.g., Operculodinium centrocarpum, Spiniferites ramosus, Brigantedinium) and typical warmer-water (e.g., Echinidinium aculeatum, Islanidium brevispinosum) species present. Furthermore, the species-specific timing of cyst production behaved similarly relative to the seasonal sea-ice cycle at both locations. Cyst species proportions and species-specific flux quantities, however, differed between the two sites and corresponded to the quantities and species assemblages recorded in the surface sediment, with the exception of cysts of Polarella glacialis and cf. Biecheleria sp. that seem not to preserve well in sediment but were abundant in both traps. Otherwise, cyst assemblage at the ... Article in Journal/Newspaper Arctic Hudson Bay Phytoplankton Sea ice Subarctic MSpace at the University of Manitoba Arctic Canada Hudson Hudson Bay Marine Micropaleontology 125 1 24 |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
dinoflagellate cyst sea ice Hudson Bay Arctic sediment trap phytoplankton dynamics tintinnid loricae ciliate |
spellingShingle |
dinoflagellate cyst sea ice Hudson Bay Arctic sediment trap phytoplankton dynamics tintinnid loricae ciliate Heikkilä, Maija Pospelova, Vera Forest, Alexandre Stern, Gary Fortier, Louis Macdonald, Robie Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
topic_facet |
dinoflagellate cyst sea ice Hudson Bay Arctic sediment trap phytoplankton dynamics tintinnid loricae ciliate |
description |
We present continuous bi-weekly to bi-monthly dinoflagellate cyst, tintinnid loricae and tintinnid cyst fluxes at two mooring sites in Hudson Bay (subarctic Canada) from October 2005 to September 2006. The total dinoflagellate cyst fluxes at the site on the western side of the bay ranged from 4600 to 53,600 cysts m−2 day−1 (average 20,000 cysts m−2 day−1 ), while on average three times higher fluxes (average 62,300 cysts m−2 day−1 ) were recorded at the site on the eastern side of the bay with a range from 2700 to 394,800 cysts m−2 day−1 . These values are equivalent to the average fluxes calculated from the top 1-cm sediment layer of 210Pb-dated box cores at corresponding locations, and hence lend support to the use of sediment dinoflagellate cysts in palaeoceanography. Tintinnid fluxes ranged from 1200 to 80,000 specimens m−2 day−1 (average 32,100 tintinnids m−2 day−1 ) in the west, and 1600 to 1,240,800 specimens m−2 day−1 (average 106,800 tintinnids m−2 day−1 ) in the east, with the highest Salpingella sp. fluxes recorded during the sea-ice cover season. The dinoflagellate cyst species diversity recorded in the traps was similar at the two environmentally differing locations, with cold-water (e.g., Echinidinium karaense, Islandinium minutum, Islandinium? cezare, Polykrikos sp. var. arctica, Spiniferites elongatus), cosmopolitan (e.g., Operculodinium centrocarpum, Spiniferites ramosus, Brigantedinium) and typical warmer-water (e.g., Echinidinium aculeatum, Islanidium brevispinosum) species present. Furthermore, the species-specific timing of cyst production behaved similarly relative to the seasonal sea-ice cycle at both locations. Cyst species proportions and species-specific flux quantities, however, differed between the two sites and corresponded to the quantities and species assemblages recorded in the surface sediment, with the exception of cysts of Polarella glacialis and cf. Biecheleria sp. that seem not to preserve well in sediment but were abundant in both traps. Otherwise, cyst assemblage at the ... |
format |
Article in Journal/Newspaper |
author |
Heikkilä, Maija Pospelova, Vera Forest, Alexandre Stern, Gary Fortier, Louis Macdonald, Robie |
author_facet |
Heikkilä, Maija Pospelova, Vera Forest, Alexandre Stern, Gary Fortier, Louis Macdonald, Robie |
author_sort |
Heikkilä, Maija |
title |
Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
title_short |
Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
title_full |
Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
title_fullStr |
Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
title_full_unstemmed |
Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay |
title_sort |
dinoflagellate cyst production over an annual cycle in seasonally ice-covered hudson bay |
publisher |
Elsevier B.V. |
publishDate |
2020 |
url |
http://hdl.handle.net/1993/34868 https://doi.org/10.1016/j.marmicro.2016.02.005 |
geographic |
Arctic Canada Hudson Hudson Bay |
geographic_facet |
Arctic Canada Hudson Hudson Bay |
genre |
Arctic Hudson Bay Phytoplankton Sea ice Subarctic |
genre_facet |
Arctic Hudson Bay Phytoplankton Sea ice Subarctic |
op_relation |
Heikkilä, M., Pospelova, V., Forest, A., Stern, G. A., Fortier, L., Macdonald, R. W., 2016. Dinoflagellate cyst production over an annual cycle in seasonally ice-covered Hudson Bay. Mar. Micropaleontol. 125: 1–24. https://doi.org/10.1016/j.marmicro.2016.02.005. http://hdl.handle.net/1993/34868 doi:10.1016/j.marmicro.2016.02.005 |
op_rights |
open access |
op_doi |
https://doi.org/10.1016/j.marmicro.2016.02.005 |
container_title |
Marine Micropaleontology |
container_volume |
125 |
container_start_page |
1 |
op_container_end_page |
24 |
_version_ |
1769004421762514944 |