No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog
Abstract: The nature of linkages between soil C and N cycling is important in the context of terrestrial ecosystem responses to global environmental change. Extracellular enzymes produced by soil microorganisms drive organic matter decomposition, and are considered sensitive indicators of soil respo...
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Language: | English |
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2014
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Online Access: | https://hdl.handle.net/10067/1147830151162165141 |
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ftunivantwerpen:c:irua:114783 2024-10-06T13:46:24+00:00 No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog Weedon, James Aerts, Rien Kowalchuk, George A. van Bodegom, Peter M. 2014 https://hdl.handle.net/10067/1147830151162165141 eng eng info:eu-repo/semantics/altIdentifier/isi/000329606200005 info:eu-repo/semantics/altIdentifier/doi/10.1007/S10533-013-9870-0 info:eu-repo/semantics/closedAccess 0168-2563 Biogeochemistry Physics Chemistry Biology info:eu-repo/semantics/article 2014 ftunivantwerpen https://doi.org/10.1007/S10533-013-9870-0 2024-09-10T04:06:33Z Abstract: The nature of linkages between soil C and N cycling is important in the context of terrestrial ecosystem responses to global environmental change. Extracellular enzymes produced by soil microorganisms drive organic matter decomposition, and are considered sensitive indicators of soil responses to environmental variation. We investigated the response of eight hydrolytic soil enzymes (four peptidases and four glycosidases) to experimental warming in a long-term climate manipulation experiment in a sub-arctic peat bog, to determine to what extent the response of these two functional groups are similar. We found no significant effect of experimental spring and summer warming and/or winter snow addition on either the potential activity or the temperature sensitivity (of V-max) of any of the enzymes. However, strong and contrasting seasonal patterns in both variables were observed. All of the peptidases, as well as alpha-glucosidase, had lower potential activity at the end of summer (August) compared to the beginning (June). Conversely, beta-glucosidase had significantly higher potential activity in August. Peptidases had consistently higher temperature sensitivities in June compared to August, while all four glycosidases showed the opposite pattern. Our results suggest that warming effects on soil enzymes are small compared to seasonal differences, which are most likely mediated by the seasonality of substrate supply and microbial nutrient demand. Furthermore the contrasting seasonal patterns for glycosidases and peptidases suggest that enzyme-based models of soil processes need to allow for potential divergence between the production and activity of these two enzyme functional groups. Article in Journal/Newspaper Arctic IRUA - Institutional Repository van de Universiteit Antwerpen Arctic Biogeochemistry 117 1 55 66 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Physics Chemistry Biology |
spellingShingle |
Physics Chemistry Biology Weedon, James Aerts, Rien Kowalchuk, George A. van Bodegom, Peter M. No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
topic_facet |
Physics Chemistry Biology |
description |
Abstract: The nature of linkages between soil C and N cycling is important in the context of terrestrial ecosystem responses to global environmental change. Extracellular enzymes produced by soil microorganisms drive organic matter decomposition, and are considered sensitive indicators of soil responses to environmental variation. We investigated the response of eight hydrolytic soil enzymes (four peptidases and four glycosidases) to experimental warming in a long-term climate manipulation experiment in a sub-arctic peat bog, to determine to what extent the response of these two functional groups are similar. We found no significant effect of experimental spring and summer warming and/or winter snow addition on either the potential activity or the temperature sensitivity (of V-max) of any of the enzymes. However, strong and contrasting seasonal patterns in both variables were observed. All of the peptidases, as well as alpha-glucosidase, had lower potential activity at the end of summer (August) compared to the beginning (June). Conversely, beta-glucosidase had significantly higher potential activity in August. Peptidases had consistently higher temperature sensitivities in June compared to August, while all four glycosidases showed the opposite pattern. Our results suggest that warming effects on soil enzymes are small compared to seasonal differences, which are most likely mediated by the seasonality of substrate supply and microbial nutrient demand. Furthermore the contrasting seasonal patterns for glycosidases and peptidases suggest that enzyme-based models of soil processes need to allow for potential divergence between the production and activity of these two enzyme functional groups. |
format |
Article in Journal/Newspaper |
author |
Weedon, James Aerts, Rien Kowalchuk, George A. van Bodegom, Peter M. |
author_facet |
Weedon, James Aerts, Rien Kowalchuk, George A. van Bodegom, Peter M. |
author_sort |
Weedon, James |
title |
No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
title_short |
No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
title_full |
No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
title_fullStr |
No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
title_full_unstemmed |
No effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
title_sort |
no effects of experimental warming but contrasting seasonal patterns for soil peptidase and glycosidase enzymes in a sub-arctic peat bog |
publishDate |
2014 |
url |
https://hdl.handle.net/10067/1147830151162165141 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
0168-2563 Biogeochemistry |
op_relation |
info:eu-repo/semantics/altIdentifier/isi/000329606200005 info:eu-repo/semantics/altIdentifier/doi/10.1007/S10533-013-9870-0 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/S10533-013-9870-0 |
container_title |
Biogeochemistry |
container_volume |
117 |
container_issue |
1 |
container_start_page |
55 |
op_container_end_page |
66 |
_version_ |
1812174735971188736 |