Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea
This study documents, for the first time, the abundance and species composition of protist assemblages in Arctic sea ice during the dark winter period. Lack of knowledge of sea-ice assemblages during the dark period has left questions about the retention and survival of protist species that initiate...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.817948 2023-05-15T15:10:43+02:00 Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea Niemi, Andrea Michel, Christine Hille, Kelly Poulin, Michel MEDIAN LATITUDE: 71.319499 * MEDIAN LONGITUDE: -124.737685 * SOUTH-BOUND LATITUDE: 71.072000 * WEST-BOUND LONGITUDE: -125.543500 * NORTH-BOUND LATITUDE: 71.544900 * EAST-BOUND LONGITUDE: -123.908500 * DATE/TIME START: 2007-12-21T00:00:00 * DATE/TIME END: 2008-01-27T00:00:00 2011-08-13 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.817948 https://doi.org/10.1594/PANGAEA.817948 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.817948 https://doi.org/10.1594/PANGAEA.817948 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Niemi, Andrea; Michel, Christine; Hille, Kelly; Poulin, Michel (2011): Protist assemblages in winter sea ice: setting the stage for the spring ice algal bloom. Polar Biology, 34(12), 1803-1817, https://doi.org/10.1007/s00300-011-1059-1 International Polar Year (2007-2008) IPY Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.817948 https://doi.org/10.1007/s00300-011-1059-1 2023-01-20T07:33:06Z This study documents, for the first time, the abundance and species composition of protist assemblages in Arctic sea ice during the dark winter period. Lack of knowledge of sea-ice assemblages during the dark period has left questions about the retention and survival of protist species that initiate the ice algal bloom. Sea-ice and surface water samples were collected between December 27, 2007 and January 31, 2008 within the Cape Bathurst flaw lead, Canadian Beaufort Sea. Samples were analyzed for protist identification and counts, chlorophyll (chl) a, and total particulate carbon and nitrogen concentrations. Sea-ice chl a concentrations (max. 0.27 µg/l) and total protist abundances (max. 4 x 10**3 cells/l) were very low, indicating minimal retention of protists in the ice during winter. The diversity of winter ice protists (134 taxa) was comparable to spring ice assemblages. Pennate diatoms dominated the winter protist assemblage numerically (averaging 77% of total protist abundances), with Nitzschia frigida being the most abundant species. Only 56 taxa were identified in surface waters, where dinoflagellates were the dominant group. Our results indicate that differences in the timing of ice formation may have a greater impact on the abundance than structure of protist assemblages present in winter sea ice and at the onset of the spring ice algal bloom. Dataset Arctic Beaufort Sea International Polar Year IPY Polar Biology Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Cape Bathurst ENVELOPE(-128.068,-128.068,70.579,70.579) ENVELOPE(-125.543500,-123.908500,71.544900,71.072000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Niemi, Andrea Michel, Christine Hille, Kelly Poulin, Michel Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
This study documents, for the first time, the abundance and species composition of protist assemblages in Arctic sea ice during the dark winter period. Lack of knowledge of sea-ice assemblages during the dark period has left questions about the retention and survival of protist species that initiate the ice algal bloom. Sea-ice and surface water samples were collected between December 27, 2007 and January 31, 2008 within the Cape Bathurst flaw lead, Canadian Beaufort Sea. Samples were analyzed for protist identification and counts, chlorophyll (chl) a, and total particulate carbon and nitrogen concentrations. Sea-ice chl a concentrations (max. 0.27 µg/l) and total protist abundances (max. 4 x 10**3 cells/l) were very low, indicating minimal retention of protists in the ice during winter. The diversity of winter ice protists (134 taxa) was comparable to spring ice assemblages. Pennate diatoms dominated the winter protist assemblage numerically (averaging 77% of total protist abundances), with Nitzschia frigida being the most abundant species. Only 56 taxa were identified in surface waters, where dinoflagellates were the dominant group. Our results indicate that differences in the timing of ice formation may have a greater impact on the abundance than structure of protist assemblages present in winter sea ice and at the onset of the spring ice algal bloom. |
format |
Dataset |
author |
Niemi, Andrea Michel, Christine Hille, Kelly Poulin, Michel |
author_facet |
Niemi, Andrea Michel, Christine Hille, Kelly Poulin, Michel |
author_sort |
Niemi, Andrea |
title |
Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
title_short |
Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
title_full |
Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
title_fullStr |
Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
title_full_unstemmed |
Physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern Beaufort Sea |
title_sort |
physicochemical characteristics and protist occurrence at stations sampled in 2007/2008 in the eastern beaufort sea |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.817948 https://doi.org/10.1594/PANGAEA.817948 |
op_coverage |
MEDIAN LATITUDE: 71.319499 * MEDIAN LONGITUDE: -124.737685 * SOUTH-BOUND LATITUDE: 71.072000 * WEST-BOUND LONGITUDE: -125.543500 * NORTH-BOUND LATITUDE: 71.544900 * EAST-BOUND LONGITUDE: -123.908500 * DATE/TIME START: 2007-12-21T00:00:00 * DATE/TIME END: 2008-01-27T00:00:00 |
long_lat |
ENVELOPE(-128.068,-128.068,70.579,70.579) ENVELOPE(-125.543500,-123.908500,71.544900,71.072000) |
geographic |
Arctic Cape Bathurst |
geographic_facet |
Arctic Cape Bathurst |
genre |
Arctic Beaufort Sea International Polar Year IPY Polar Biology Sea ice |
genre_facet |
Arctic Beaufort Sea International Polar Year IPY Polar Biology Sea ice |
op_source |
Supplement to: Niemi, Andrea; Michel, Christine; Hille, Kelly; Poulin, Michel (2011): Protist assemblages in winter sea ice: setting the stage for the spring ice algal bloom. Polar Biology, 34(12), 1803-1817, https://doi.org/10.1007/s00300-011-1059-1 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.817948 https://doi.org/10.1594/PANGAEA.817948 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.817948 https://doi.org/10.1007/s00300-011-1059-1 |
_version_ |
1766341687961976832 |