Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard
The influence of goose grazing intensity and open-topped chambers (OTCs) on near-surface quantities and qualities of soil organic carbon (SOC) was evaluated in wet and mesic ecosystems in Svalbard. This study followed up a field experiment carried out in 2003-05 (part of the project Fragility of Arc...
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Online Access: | http://hdl.handle.net/10261/57879 https://doi.org/10.1111/j.1751-8369.2010.00154.x https://doi.org/10.13039/501100007696 |
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ftcsic:oai:digital.csic.es:10261/57879 2024-02-11T10:01:10+01:00 Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard Strebel, D. Elberling, B. Morgner, E. Knicker, Heike Cooper, E. J. University Centre in Svalbard Oticon Foundation Danish Natural Science Research Council Loeffler Medicamentos Genéricos Stennsbys Travel Fond 2010 http://hdl.handle.net/10261/57879 https://doi.org/10.1111/j.1751-8369.2010.00154.x https://doi.org/10.13039/501100007696 en eng Co-Action Publishing http://dx.doi.org/10.1111/j.1751-8369.2010.00154.x Polar Research 29(1): 46-57 (2010) 0800-0395 http://hdl.handle.net/10261/57879 doi:10.1111/j.1751-8369.2010.00154.x 1751-8369 http://dx.doi.org/10.13039/501100007696 open Goose grazing Soil respiration SOC turnover Spitsbergen Tundra vegetation Warming artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.1111/j.1751-8369.2010.00154.x10.13039/501100007696 2024-01-16T09:41:26Z The influence of goose grazing intensity and open-topped chambers (OTCs) on near-surface quantities and qualities of soil organic carbon (SOC) was evaluated in wet and mesic ecosystems in Svalbard. This study followed up a field experiment carried out in 2003-05 (part of the project Fragility of Arctic Goose Habitat: Impacts of Land Use, Conservation and Elevated Temperatures). New measurements of soil CO(2) effluxes, temperatures and water contents were regularly made from July to November 2007. SOC stocks were quantified, and the reactivity and composition measured by basal soil respiration (BSR) and solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. Results reveal variations in soil carbon cycling, with significant seasonal trends controlled by temperature, water content and snow. Experimental warming (OTCs) increased near-surface temperatures in the growing season, resulting in significantly higher CO(2) effluxes. Different grazing intensities had no significant effects on observed soil respiration, but BSR rates at the mesic site (13-23 mu g CO(2) g soil-C-1 h-1) were highest with moderate grazing and lowest in the absence of grazing. A limited effect of grazing on microbial respiration is consistent with a lack of significant differences in SOC quantity and quality. NMR data show that the composition of A-horizon SOC is dominated by O-N-alkyl C and alkyl C groups, and less by carboxyl C and aromatic C groups: but again no marked variation in response to grazing was evident. It can be concluded that two years after a goose grazing experiment, SOC cycling was less than the natural variation within contrasting vegetation types. This study was funded by: the University Centre in Svalbard, Longyearbyen, Norway; Oticon Fonden; Loeffler; Stennsbys Travel Fond; and the Danish Natural Science Research Council. Peer Reviewed Article in Journal/Newspaper Arctic Longyearbyen Polar Research Svalbard Tundra University Centre in Svalbard Spitsbergen Digital.CSIC (Spanish National Research Council) Arctic Longyearbyen Norway Svalbard Polar Research 29 1 46 57 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Goose grazing Soil respiration SOC turnover Spitsbergen Tundra vegetation Warming |
spellingShingle |
Goose grazing Soil respiration SOC turnover Spitsbergen Tundra vegetation Warming Strebel, D. Elberling, B. Morgner, E. Knicker, Heike Cooper, E. J. Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
topic_facet |
Goose grazing Soil respiration SOC turnover Spitsbergen Tundra vegetation Warming |
description |
The influence of goose grazing intensity and open-topped chambers (OTCs) on near-surface quantities and qualities of soil organic carbon (SOC) was evaluated in wet and mesic ecosystems in Svalbard. This study followed up a field experiment carried out in 2003-05 (part of the project Fragility of Arctic Goose Habitat: Impacts of Land Use, Conservation and Elevated Temperatures). New measurements of soil CO(2) effluxes, temperatures and water contents were regularly made from July to November 2007. SOC stocks were quantified, and the reactivity and composition measured by basal soil respiration (BSR) and solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. Results reveal variations in soil carbon cycling, with significant seasonal trends controlled by temperature, water content and snow. Experimental warming (OTCs) increased near-surface temperatures in the growing season, resulting in significantly higher CO(2) effluxes. Different grazing intensities had no significant effects on observed soil respiration, but BSR rates at the mesic site (13-23 mu g CO(2) g soil-C-1 h-1) were highest with moderate grazing and lowest in the absence of grazing. A limited effect of grazing on microbial respiration is consistent with a lack of significant differences in SOC quantity and quality. NMR data show that the composition of A-horizon SOC is dominated by O-N-alkyl C and alkyl C groups, and less by carboxyl C and aromatic C groups: but again no marked variation in response to grazing was evident. It can be concluded that two years after a goose grazing experiment, SOC cycling was less than the natural variation within contrasting vegetation types. This study was funded by: the University Centre in Svalbard, Longyearbyen, Norway; Oticon Fonden; Loeffler; Stennsbys Travel Fond; and the Danish Natural Science Research Council. Peer Reviewed |
author2 |
University Centre in Svalbard Oticon Foundation Danish Natural Science Research Council Loeffler Medicamentos Genéricos Stennsbys Travel Fond |
format |
Article in Journal/Newspaper |
author |
Strebel, D. Elberling, B. Morgner, E. Knicker, Heike Cooper, E. J. |
author_facet |
Strebel, D. Elberling, B. Morgner, E. Knicker, Heike Cooper, E. J. |
author_sort |
Strebel, D. |
title |
Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
title_short |
Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
title_full |
Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
title_fullStr |
Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
title_full_unstemmed |
Cold-season soil respiration in response to grazing and warming in High-Arctic Svalbard |
title_sort |
cold-season soil respiration in response to grazing and warming in high-arctic svalbard |
publisher |
Co-Action Publishing |
publishDate |
2010 |
url |
http://hdl.handle.net/10261/57879 https://doi.org/10.1111/j.1751-8369.2010.00154.x https://doi.org/10.13039/501100007696 |
geographic |
Arctic Longyearbyen Norway Svalbard |
geographic_facet |
Arctic Longyearbyen Norway Svalbard |
genre |
Arctic Longyearbyen Polar Research Svalbard Tundra University Centre in Svalbard Spitsbergen |
genre_facet |
Arctic Longyearbyen Polar Research Svalbard Tundra University Centre in Svalbard Spitsbergen |
op_relation |
http://dx.doi.org/10.1111/j.1751-8369.2010.00154.x Polar Research 29(1): 46-57 (2010) 0800-0395 http://hdl.handle.net/10261/57879 doi:10.1111/j.1751-8369.2010.00154.x 1751-8369 http://dx.doi.org/10.13039/501100007696 |
op_rights |
open |
op_doi |
https://doi.org/10.1111/j.1751-8369.2010.00154.x10.13039/501100007696 |
container_title |
Polar Research |
container_volume |
29 |
container_issue |
1 |
container_start_page |
46 |
op_container_end_page |
57 |
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1790596927570575360 |