Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1
Pack ice around Svalbard was sampled during the expedition ARK XIX/1 of RV "Polarstern" (March-April 2003) in order to determine environmental conditions, species composition and abundances of sea-ice algae and heterotrophic protists during late winter. As compared to other seasons, specie...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.855218 2024-09-15T17:48:04+00:00 Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 Werner, Iris Ikävalko, Johanna Schünemann, Henrike MEDIAN LATITUDE: 78.905080 * MEDIAN LONGITUDE: 16.849420 * SOUTH-BOUND LATITUDE: 76.294900 * WEST-BOUND LONGITUDE: 9.569400 * NORTH-BOUND LATITUDE: 81.898400 * EAST-BOUND LONGITUDE: 23.365800 * DATE/TIME START: 2003-03-12T08:20:00 * DATE/TIME END: 2003-04-17T00:00:00 2007 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.855218 https://doi.org/10.1594/PANGAEA.855218 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.855218 https://doi.org/10.1594/PANGAEA.855218 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Werner, Iris; Ikävalko, Johanna; Schünemann, Henrike (2007): Sea-ice algae in Arctic pack ice during late winter. Polar Biology, 30(11), 1493-1504, https://doi.org/10.1007/s00300-007-0310-2 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 dataset publication series 2007 ftpangaea https://doi.org/10.1594/PANGAEA.85521810.1007/s00300-007-0310-2 2024-07-24T02:31:21Z Pack ice around Svalbard was sampled during the expedition ARK XIX/1 of RV "Polarstern" (March-April 2003) in order to determine environmental conditions, species composition and abundances of sea-ice algae and heterotrophic protists during late winter. As compared to other seasons, species diversity of algae (total 40 taxa) was not low, but abundances (5,000-448,000 cells/l) were lower by one to two orders of magnitude. Layers of high algal abundances were observed both at the bottom and in the ice interior. Inorganic nutrient concentrations (NO2, NO3, PO4, Si(OH)4) within the ice were mostly higher than during other seasons, and enriched compared to seawater by enrichment indices of 1.6-24.6 (corrected for losses through the desalination process). Thus, the survival of algae in Arctic pack ice was not limited by nutrients at the beginning of the productive season. Based on less-detailed physical data, light was considered as the most probable factor controlling the onset of the spring ice-algal bloom in the lower part of the ice, while low temperatures and salinities inhibit algal growth in the upper part of the ice at the end of the winter. Incorporation of ice algae probably took place during the entire freezing period. Possible overwintering strategies during the dark period, such as facultative heterotrophy, energy reserves, and resting spores are discussed. Other/Unknown Material Antarc* Antarctic Arctic ice algae Polar Biology Sea ice Svalbard PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(9.569400,23.365800,81.898400,76.294900) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Werner, Iris Ikävalko, Johanna Schünemann, Henrike Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Pack ice around Svalbard was sampled during the expedition ARK XIX/1 of RV "Polarstern" (March-April 2003) in order to determine environmental conditions, species composition and abundances of sea-ice algae and heterotrophic protists during late winter. As compared to other seasons, species diversity of algae (total 40 taxa) was not low, but abundances (5,000-448,000 cells/l) were lower by one to two orders of magnitude. Layers of high algal abundances were observed both at the bottom and in the ice interior. Inorganic nutrient concentrations (NO2, NO3, PO4, Si(OH)4) within the ice were mostly higher than during other seasons, and enriched compared to seawater by enrichment indices of 1.6-24.6 (corrected for losses through the desalination process). Thus, the survival of algae in Arctic pack ice was not limited by nutrients at the beginning of the productive season. Based on less-detailed physical data, light was considered as the most probable factor controlling the onset of the spring ice-algal bloom in the lower part of the ice, while low temperatures and salinities inhibit algal growth in the upper part of the ice at the end of the winter. Incorporation of ice algae probably took place during the entire freezing period. Possible overwintering strategies during the dark period, such as facultative heterotrophy, energy reserves, and resting spores are discussed. |
format |
Other/Unknown Material |
author |
Werner, Iris Ikävalko, Johanna Schünemann, Henrike |
author_facet |
Werner, Iris Ikävalko, Johanna Schünemann, Henrike |
author_sort |
Werner, Iris |
title |
Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
title_short |
Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
title_full |
Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
title_fullStr |
Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
title_full_unstemmed |
Photosynthetically active radiation and microalgae and protist occurrence at ice stations of POLARSTERN cruise ARK-XIX/1 |
title_sort |
photosynthetically active radiation and microalgae and protist occurrence at ice stations of polarstern cruise ark-xix/1 |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.855218 https://doi.org/10.1594/PANGAEA.855218 |
op_coverage |
MEDIAN LATITUDE: 78.905080 * MEDIAN LONGITUDE: 16.849420 * SOUTH-BOUND LATITUDE: 76.294900 * WEST-BOUND LONGITUDE: 9.569400 * NORTH-BOUND LATITUDE: 81.898400 * EAST-BOUND LONGITUDE: 23.365800 * DATE/TIME START: 2003-03-12T08:20:00 * DATE/TIME END: 2003-04-17T00:00:00 |
long_lat |
ENVELOPE(9.569400,23.365800,81.898400,76.294900) |
genre |
Antarc* Antarctic Arctic ice algae Polar Biology Sea ice Svalbard |
genre_facet |
Antarc* Antarctic Arctic ice algae Polar Biology Sea ice Svalbard |
op_source |
Supplement to: Werner, Iris; Ikävalko, Johanna; Schünemann, Henrike (2007): Sea-ice algae in Arctic pack ice during late winter. Polar Biology, 30(11), 1493-1504, https://doi.org/10.1007/s00300-007-0310-2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.855218 https://doi.org/10.1594/PANGAEA.855218 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85521810.1007/s00300-007-0310-2 |
_version_ |
1810288942612742144 |