Shallow freshwater ecosystems of the circumpolar Arctic
This review provides a synthesis of limnological data and conclusions from studies on ponds and small lakes at our research sites in Subarctic and Arctic Canada, Alaska, northern Scandinavia, and Greenland. Many of these water bodies contain large standing stocks of benthic microbial mats that grow...
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2011
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Online Access: | https://curis.ku.dk/portal/da/publications/shallow-freshwater-ecosystems-of-the-circumpolar-arctic(6561a73e-fd6a-46fd-be12-1720a95d2dbc).html https://doi.org/10.2980/18-3-3463 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/6561a73e-fd6a-46fd-be12-1720a95d2dbc 2023-12-03T10:14:51+01:00 Shallow freshwater ecosystems of the circumpolar Arctic Rautio, Milla Dufresne, France Laurion, Isabelle Bonilla, Sylvia Vincent, Warwick F. Christoffersen, Kirsten Seestern 2011 https://curis.ku.dk/portal/da/publications/shallow-freshwater-ecosystems-of-the-circumpolar-arctic(6561a73e-fd6a-46fd-be12-1720a95d2dbc).html https://doi.org/10.2980/18-3-3463 eng eng info:eu-repo/semantics/closedAccess Rautio , M , Dufresne , F , Laurion , I , Bonilla , S , Vincent , W F & Christoffersen , K S 2011 , ' Shallow freshwater ecosystems of the circumpolar Arctic ' , Ecoscience , vol. 18 , no. 3 , pp. 204-222 . https://doi.org/10.2980/18-3-3463 article 2011 ftcopenhagenunip https://doi.org/10.2980/18-3-3463 2023-11-08T23:59:10Z This review provides a synthesis of limnological data and conclusions from studies on ponds and small lakes at our research sites in Subarctic and Arctic Canada, Alaska, northern Scandinavia, and Greenland. Many of these water bodies contain large standing stocks of benthic microbial mats that grow in relatively nutrient-rich conditions, while the overlying water column is nutrient-poor and supports only low concentrations of phytoplankton. Zooplankton biomass can, however, be substantial and is supported by grazing on the microbial mats as well as detrital inputs, algae, and other plankton. In addition to large annual temperature fluctuations, a short growing season, and freeze-up and desiccation stress in winter, these ecosystems are strongly regulated by the supply of organic matter and its optical and biogeochemical properties. Dissolved organic carbon affects bacterial diversity and production, the ratio between pelagic and benthic primary productivity via light attenuation, and the exposure and photoprotection responses of organisms to solar ultraviolet radiation. Climate warming is likely to result in reduced duration of ice-cover, warmer water temperatures, and increased nutrient supplies from the more biogeochemically active catchments, which in turn may cause greater planktonic production. Predicted changes in the amount and origin of dissolved organic matter may favour increased microbial activity in the water column and decreased light availability for the phytobenthos, with effects on biodiversity at all trophic levels, and increased channelling of terrestrial carbon to the atmosphere in the form of greenhouse gases. Article in Journal/Newspaper Arctic Arctic Greenland Phytoplankton Subarctic Zooplankton Alaska University of Copenhagen: Research Arctic Canada Greenland Écoscience 18 3 204 222 |
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Open Polar |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
This review provides a synthesis of limnological data and conclusions from studies on ponds and small lakes at our research sites in Subarctic and Arctic Canada, Alaska, northern Scandinavia, and Greenland. Many of these water bodies contain large standing stocks of benthic microbial mats that grow in relatively nutrient-rich conditions, while the overlying water column is nutrient-poor and supports only low concentrations of phytoplankton. Zooplankton biomass can, however, be substantial and is supported by grazing on the microbial mats as well as detrital inputs, algae, and other plankton. In addition to large annual temperature fluctuations, a short growing season, and freeze-up and desiccation stress in winter, these ecosystems are strongly regulated by the supply of organic matter and its optical and biogeochemical properties. Dissolved organic carbon affects bacterial diversity and production, the ratio between pelagic and benthic primary productivity via light attenuation, and the exposure and photoprotection responses of organisms to solar ultraviolet radiation. Climate warming is likely to result in reduced duration of ice-cover, warmer water temperatures, and increased nutrient supplies from the more biogeochemically active catchments, which in turn may cause greater planktonic production. Predicted changes in the amount and origin of dissolved organic matter may favour increased microbial activity in the water column and decreased light availability for the phytobenthos, with effects on biodiversity at all trophic levels, and increased channelling of terrestrial carbon to the atmosphere in the form of greenhouse gases. |
format |
Article in Journal/Newspaper |
author |
Rautio, Milla Dufresne, France Laurion, Isabelle Bonilla, Sylvia Vincent, Warwick F. Christoffersen, Kirsten Seestern |
spellingShingle |
Rautio, Milla Dufresne, France Laurion, Isabelle Bonilla, Sylvia Vincent, Warwick F. Christoffersen, Kirsten Seestern Shallow freshwater ecosystems of the circumpolar Arctic |
author_facet |
Rautio, Milla Dufresne, France Laurion, Isabelle Bonilla, Sylvia Vincent, Warwick F. Christoffersen, Kirsten Seestern |
author_sort |
Rautio, Milla |
title |
Shallow freshwater ecosystems of the circumpolar Arctic |
title_short |
Shallow freshwater ecosystems of the circumpolar Arctic |
title_full |
Shallow freshwater ecosystems of the circumpolar Arctic |
title_fullStr |
Shallow freshwater ecosystems of the circumpolar Arctic |
title_full_unstemmed |
Shallow freshwater ecosystems of the circumpolar Arctic |
title_sort |
shallow freshwater ecosystems of the circumpolar arctic |
publishDate |
2011 |
url |
https://curis.ku.dk/portal/da/publications/shallow-freshwater-ecosystems-of-the-circumpolar-arctic(6561a73e-fd6a-46fd-be12-1720a95d2dbc).html https://doi.org/10.2980/18-3-3463 |
geographic |
Arctic Canada Greenland |
geographic_facet |
Arctic Canada Greenland |
genre |
Arctic Arctic Greenland Phytoplankton Subarctic Zooplankton Alaska |
genre_facet |
Arctic Arctic Greenland Phytoplankton Subarctic Zooplankton Alaska |
op_source |
Rautio , M , Dufresne , F , Laurion , I , Bonilla , S , Vincent , W F & Christoffersen , K S 2011 , ' Shallow freshwater ecosystems of the circumpolar Arctic ' , Ecoscience , vol. 18 , no. 3 , pp. 204-222 . https://doi.org/10.2980/18-3-3463 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.2980/18-3-3463 |
container_title |
Écoscience |
container_volume |
18 |
container_issue |
3 |
container_start_page |
204 |
op_container_end_page |
222 |
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1784261924506042368 |