Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ...
The effects of a 10-year climate warming experiment on nitrogen (N) cycling in high arctic tundra ecosystems were examined along a soil moisture gradient at Alexandra Fiord, Ellesmere Island, Canada (78°53'N, 75°55'W). Open top chambers were established in 1992 to passively warm five tundr...
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University of British Columbia
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Online Access: | https://dx.doi.org/10.14288/1.0090983 https://doi.library.ubc.ca/10.14288/1.0090983 |
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ftdatacite:10.14288/1.0090983 2024-04-28T07:53:59+00:00 Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... Rolph, Sandra Gale 2009 https://dx.doi.org/10.14288/1.0090983 https://doi.library.ubc.ca/10.14288/1.0090983 en eng University of British Columbia article-journal Text ScholarlyArticle 2009 ftdatacite https://doi.org/10.14288/1.0090983 2024-04-02T09:44:49Z The effects of a 10-year climate warming experiment on nitrogen (N) cycling in high arctic tundra ecosystems were examined along a soil moisture gradient at Alexandra Fiord, Ellesmere Island, Canada (78°53'N, 75°55'W). Open top chambers were established in 1992 to passively warm five tundra plant communities within the range predicted for a doubling of atmospheric CO₂. Inorganic N availability, measured using ion exchange membranes, was consistently higher in the warmed plots throughout the growing season in three plant communities. Soluble organic N availability increased significantly with warming in a wet sedge meadow. Net N mineralization in buried bag incubations was not significantly affected by the warming treatments; however, net N immobilization was four-times higher in the warmed plots compared to the controls in the sedge meadow. Reciprocal transplantation of buried bags between temperature treatments indicated that the increase in net N immobilization was a result of changes in soil properties ... Text Alexandra Fiord Arctic Ellesmere Island Tundra DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
The effects of a 10-year climate warming experiment on nitrogen (N) cycling in high arctic tundra ecosystems were examined along a soil moisture gradient at Alexandra Fiord, Ellesmere Island, Canada (78°53'N, 75°55'W). Open top chambers were established in 1992 to passively warm five tundra plant communities within the range predicted for a doubling of atmospheric CO₂. Inorganic N availability, measured using ion exchange membranes, was consistently higher in the warmed plots throughout the growing season in three plant communities. Soluble organic N availability increased significantly with warming in a wet sedge meadow. Net N mineralization in buried bag incubations was not significantly affected by the warming treatments; however, net N immobilization was four-times higher in the warmed plots compared to the controls in the sedge meadow. Reciprocal transplantation of buried bags between temperature treatments indicated that the increase in net N immobilization was a result of changes in soil properties ... |
format |
Text |
author |
Rolph, Sandra Gale |
spellingShingle |
Rolph, Sandra Gale Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
author_facet |
Rolph, Sandra Gale |
author_sort |
Rolph, Sandra Gale |
title |
Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
title_short |
Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
title_full |
Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
title_fullStr |
Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
title_full_unstemmed |
Effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
title_sort |
effects of a ten-year climate warming experiment on nitrogen cycling in high arctic tundra ... |
publisher |
University of British Columbia |
publishDate |
2009 |
url |
https://dx.doi.org/10.14288/1.0090983 https://doi.library.ubc.ca/10.14288/1.0090983 |
genre |
Alexandra Fiord Arctic Ellesmere Island Tundra |
genre_facet |
Alexandra Fiord Arctic Ellesmere Island Tundra |
op_doi |
https://doi.org/10.14288/1.0090983 |
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1797574246791118848 |