Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland
Shrub species are expanding across the Arctic in response to climate change and biotic interactions. Changes in belowground carbon (C) and nitrogen (N) storage are of global importance because Arctic soils store approximately half of global soil C. We collected 10 (60 cm) soil cores each from gramin...
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crcansciencepubl:10.1139/as-2015-0023 2023-12-17T10:22:56+01:00 Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland Petrenko, Chelsea L. Bradley-Cook, Julia Lacroix, Emily M. Friedland, Andrew J. Virginia, Ross A. 2016 http://dx.doi.org/10.1139/as-2015-0023 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2015-0023 https://cdnsciencepub.com/doi/pdf/10.1139/as-2015-0023 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Arctic Science volume 2, issue 4, page 165-182 ISSN 2368-7460 2368-7460 General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science journal-article 2016 crcansciencepubl https://doi.org/10.1139/as-2015-0023 2023-11-19T13:38:54Z Shrub species are expanding across the Arctic in response to climate change and biotic interactions. Changes in belowground carbon (C) and nitrogen (N) storage are of global importance because Arctic soils store approximately half of global soil C. We collected 10 (60 cm) soil cores each from graminoid- and shrub-dominated soils in western Greenland and determined soil texture, pH, C and N pools, and C:N ratios by depth for the mineral soil. To investigate the relative chemical stability of soil C between vegetation types, we employed a novel sequential extraction method for measuring organo-mineral C pools of increasing bond strength. We found that (i) mineral soil C and N storage was significantly greater under graminoids than shrubs (29.0 ± 1.8 versus 22.5 ± 3.0 kg·C·m −2 and 1.9 ± .12 versus 1.4 ± 1.9 kg·N·m −2 ), (ii) chemical mechanisms of C storage in the organo-mineral soil fraction did not differ between graminoid and shrub soils, and (iii) weak adsorption to mineral surfaces accounted for 40%–60% of C storage in organo-mineral fractions — a pool that is relatively sensitive to environmental disturbance. Differences in these C pools suggest that rates of C accumulation and retention differ by vegetation type, which could have implications for predicting future soil C pool storage. Article in Journal/Newspaper Arctic Arctic Climate change Greenland Tundra Canadian Science Publishing (via Crossref) Arctic Greenland Arctic Science 2 4 165 182 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
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General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science Petrenko, Chelsea L. Bradley-Cook, Julia Lacroix, Emily M. Friedland, Andrew J. Virginia, Ross A. Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
topic_facet |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
description |
Shrub species are expanding across the Arctic in response to climate change and biotic interactions. Changes in belowground carbon (C) and nitrogen (N) storage are of global importance because Arctic soils store approximately half of global soil C. We collected 10 (60 cm) soil cores each from graminoid- and shrub-dominated soils in western Greenland and determined soil texture, pH, C and N pools, and C:N ratios by depth for the mineral soil. To investigate the relative chemical stability of soil C between vegetation types, we employed a novel sequential extraction method for measuring organo-mineral C pools of increasing bond strength. We found that (i) mineral soil C and N storage was significantly greater under graminoids than shrubs (29.0 ± 1.8 versus 22.5 ± 3.0 kg·C·m −2 and 1.9 ± .12 versus 1.4 ± 1.9 kg·N·m −2 ), (ii) chemical mechanisms of C storage in the organo-mineral soil fraction did not differ between graminoid and shrub soils, and (iii) weak adsorption to mineral surfaces accounted for 40%–60% of C storage in organo-mineral fractions — a pool that is relatively sensitive to environmental disturbance. Differences in these C pools suggest that rates of C accumulation and retention differ by vegetation type, which could have implications for predicting future soil C pool storage. |
format |
Article in Journal/Newspaper |
author |
Petrenko, Chelsea L. Bradley-Cook, Julia Lacroix, Emily M. Friedland, Andrew J. Virginia, Ross A. |
author_facet |
Petrenko, Chelsea L. Bradley-Cook, Julia Lacroix, Emily M. Friedland, Andrew J. Virginia, Ross A. |
author_sort |
Petrenko, Chelsea L. |
title |
Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
title_short |
Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
title_full |
Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
title_fullStr |
Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
title_full_unstemmed |
Comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western Greenland |
title_sort |
comparison of carbon and nitrogen storage in mineral soils of graminoid and shrub tundra sites, western greenland |
publisher |
Canadian Science Publishing |
publishDate |
2016 |
url |
http://dx.doi.org/10.1139/as-2015-0023 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2015-0023 https://cdnsciencepub.com/doi/pdf/10.1139/as-2015-0023 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Climate change Greenland Tundra |
genre_facet |
Arctic Arctic Climate change Greenland Tundra |
op_source |
Arctic Science volume 2, issue 4, page 165-182 ISSN 2368-7460 2368-7460 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/as-2015-0023 |
container_title |
Arctic Science |
container_volume |
2 |
container_issue |
4 |
container_start_page |
165 |
op_container_end_page |
182 |
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1785554659442688000 |