Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada
Seasonal dynamics in the activity of Arctic shelf benthos have been the subject of few local studies, and the pronounced among-site variability characterizing their results makes it difficult to upscale and generalize their conclusions. In a regional study encompassing five sites at 100-595 m water...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.817858 2023-05-15T13:22:57+02:00 Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada Link, Heike Archambault, Philippe Tamelander, Tobias Renaud, Paul E Piepenburg, Dieter MEDIAN LATITUDE: 70.843800 * MEDIAN LONGITUDE: -124.701850 * SOUTH-BOUND LATITUDE: 69.968000 * WEST-BOUND LONGITUDE: -127.088000 * NORTH-BOUND LATITUDE: 71.318000 * EAST-BOUND LONGITUDE: -121.811000 * DATE/TIME START: 2008-03-24T00:00:00 * DATE/TIME END: 2008-08-02T00:00:00 2011-08-12 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.817858 https://doi.org/10.1594/PANGAEA.817858 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.817858 https://doi.org/10.1594/PANGAEA.817858 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Link, Heike; Archambault, Philippe; Tamelander, Tobias; Renaud, Paul E; Piepenburg, Dieter (2011): Spring-to-summer changes and regional variability of benthic processes in the western Canadian Arctic. Polar Biology, 34(12), 2025-2038, https://doi.org/10.1007/s00300-011-1046-6 International Polar Year (2007-2008) IPY Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.817858 https://doi.org/10.1007/s00300-011-1046-6 2023-01-20T07:33:06Z Seasonal dynamics in the activity of Arctic shelf benthos have been the subject of few local studies, and the pronounced among-site variability characterizing their results makes it difficult to upscale and generalize their conclusions. In a regional study encompassing five sites at 100-595 m water depth in the southeastern Beaufort Sea, we found that total pigment concentrations in surficial sediments, used as proxies of general food supply to the benthos, rose significantly after the transition from ice-covered conditions in spring (March-June 2008) to open-water conditions in summer (June-August 2008), whereas sediment Chl a concentrations, typical markers of fresh food input, did not. Macrobenthic biomass (including agglutinated foraminifera >500 µm) varied significantly among sites (1.2-6.4 g C/m**2 in spring, 1.1-12.6 g C/m**2 in summer), whereas a general spring-to-summer increase was not detected. Benthic carbon remineralisation also ranged significantly among sites (11.9-33.2 mg C/m**2/day in spring, 11.6-44.4 mg C/m**2/day in summer) and did in addition exhibit a general significant increase from spring-to-summer. Multiple regression analysis suggests that in both spring and summer, sediment Chl a concentration is the prime determinant of benthic carbon remineralisation, but other factors have a significant secondary influence, such as foraminiferan biomass (negative in both seasons), water depth (in spring) and infaunal biomass (in summer). Our findings indicate the importance of the combined and dynamic effects of food supply and benthic community patterns on the carbon remineralisation of the polar shelf benthos in seasonally ice-covered seas. Dataset Amundsen Gulf Arctic Arctic Beaufort Sea Foraminifera* International Polar Year IPY Polar Biology Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Canada ENVELOPE(-127.088000,-121.811000,71.318000,69.968000) |
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 Link, Heike Archambault, Philippe Tamelander, Tobias Renaud, Paul E Piepenburg, Dieter Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
Seasonal dynamics in the activity of Arctic shelf benthos have been the subject of few local studies, and the pronounced among-site variability characterizing their results makes it difficult to upscale and generalize their conclusions. In a regional study encompassing five sites at 100-595 m water depth in the southeastern Beaufort Sea, we found that total pigment concentrations in surficial sediments, used as proxies of general food supply to the benthos, rose significantly after the transition from ice-covered conditions in spring (March-June 2008) to open-water conditions in summer (June-August 2008), whereas sediment Chl a concentrations, typical markers of fresh food input, did not. Macrobenthic biomass (including agglutinated foraminifera >500 µm) varied significantly among sites (1.2-6.4 g C/m**2 in spring, 1.1-12.6 g C/m**2 in summer), whereas a general spring-to-summer increase was not detected. Benthic carbon remineralisation also ranged significantly among sites (11.9-33.2 mg C/m**2/day in spring, 11.6-44.4 mg C/m**2/day in summer) and did in addition exhibit a general significant increase from spring-to-summer. Multiple regression analysis suggests that in both spring and summer, sediment Chl a concentration is the prime determinant of benthic carbon remineralisation, but other factors have a significant secondary influence, such as foraminiferan biomass (negative in both seasons), water depth (in spring) and infaunal biomass (in summer). Our findings indicate the importance of the combined and dynamic effects of food supply and benthic community patterns on the carbon remineralisation of the polar shelf benthos in seasonally ice-covered seas. |
format |
Dataset |
author |
Link, Heike Archambault, Philippe Tamelander, Tobias Renaud, Paul E Piepenburg, Dieter |
author_facet |
Link, Heike Archambault, Philippe Tamelander, Tobias Renaud, Paul E Piepenburg, Dieter |
author_sort |
Link, Heike |
title |
Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
title_short |
Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
title_full |
Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
title_fullStr |
Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
title_full_unstemmed |
Sea ice cover, and bottom water and sediment characteristics at stations in the Amundsen Gulf, Canada |
title_sort |
sea ice cover, and bottom water and sediment characteristics at stations in the amundsen gulf, canada |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.817858 https://doi.org/10.1594/PANGAEA.817858 |
op_coverage |
MEDIAN LATITUDE: 70.843800 * MEDIAN LONGITUDE: -124.701850 * SOUTH-BOUND LATITUDE: 69.968000 * WEST-BOUND LONGITUDE: -127.088000 * NORTH-BOUND LATITUDE: 71.318000 * EAST-BOUND LONGITUDE: -121.811000 * DATE/TIME START: 2008-03-24T00:00:00 * DATE/TIME END: 2008-08-02T00:00:00 |
long_lat |
ENVELOPE(-127.088000,-121.811000,71.318000,69.968000) |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Amundsen Gulf Arctic Arctic Beaufort Sea Foraminifera* International Polar Year IPY Polar Biology Sea ice |
genre_facet |
Amundsen Gulf Arctic Arctic Beaufort Sea Foraminifera* International Polar Year IPY Polar Biology Sea ice |
op_source |
Supplement to: Link, Heike; Archambault, Philippe; Tamelander, Tobias; Renaud, Paul E; Piepenburg, Dieter (2011): Spring-to-summer changes and regional variability of benthic processes in the western Canadian Arctic. Polar Biology, 34(12), 2025-2038, https://doi.org/10.1007/s00300-011-1046-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.817858 https://doi.org/10.1594/PANGAEA.817858 |
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.817858 https://doi.org/10.1007/s00300-011-1046-6 |
_version_ |
1766368113977196544 |