Benthic foraminifera as palaeo sea-ice indicators in the subarctic realm - examples from the Labrador Sea-Baffin Bay region
Benthic foraminifera are found in a wide range of environments and may at times be one of few proxies available for the study of palaeoenvironmental conditions. However, the response of benthic foraminifera to changing sea-ice conditions is not well understood. This paper discusses benthic foraminif...
| Published in: | Quaternary Science Reviews |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
2013
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| Online Access: | https://pure.au.dk/portal/da/publications/benthic-foraminifera-as-palaeo-seaice-indicators-in-the-subarctic-realm--examples-from-the-labrador-seabaffin-bay-region(42b49db1-f725-454a-9331-cd485d290d8d).html https://doi.org/10.1016/j.quascirev.2013.03.014 http://www.scopus.com/inward/record.url?scp=84877825289&partnerID=8YFLogxK |
| Summary: | Benthic foraminifera are found in a wide range of environments and may at times be one of few proxies available for the study of palaeoenvironmental conditions. However, the response of benthic foraminifera to changing sea-ice conditions is not well understood. This paper discusses benthic foraminifera as potential sea-ice proxies, with special emphasis on their use in shelf regions of the sub-arctic realm. Four marine sediment records from the Labrador Sea-Baffin Bay region serve as examples; in all four records independent sea-ice proxy will be used for testing the foraminiferal response to changing sea ice conditions. This test suggests that 1) Benthic foraminifera provide information on variations in sea-ice cover, but they are not direct proxies for sea-ice cover and no true sea-ice species has yet been identified. 2) Foraminifera mainly respond to the surplus of food often available at sea-ice edges. 3) Dominance of agglutinated foraminifera may suggest corrosive bottom-water conditions which may at times be linked to seasonal sea-ice cover. |
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