Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species
Litter decomposition and nutrient mineralization in high-latitude peatlands are constrained by low temperatures. So far, little is known about the effects of seasonal components of climate change (higher spring and summer temperatures, more snow which leads to higher winter soil temperatures) on the...
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Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2012
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146472 https://doi.org/10.1007/s00442-012-2330-z |
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ftumeauniv:oai:DiVA.org:umu-146472 2023-10-09T21:48:40+02:00 Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species Aerts, R. Callaghan, T. V. Dorrepaal, E. van Logtestijn, R. S. P. Cornelissen, J. H. C. 2012 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146472 https://doi.org/10.1007/s00442-012-2330-z eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Systems Ecology, Department of Ecological Science, VU University Amsterdam, Amsterdam, The Netherlands Oecologia, 0029-8549, 2012, 170:3, s. 809-819 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146472 doi:10.1007/s00442-012-2330-z PMID 22526945 ISI:000309866200021 Scopus 2-s2.0-84867514126 info:eu-repo/semantics/openAccess Climate warming Immobilization Nutrient limitation Nutrient mineralization Phosphorus release Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2012 ftumeauniv https://doi.org/10.1007/s00442-012-2330-z 2023-09-22T13:59:31Z Litter decomposition and nutrient mineralization in high-latitude peatlands are constrained by low temperatures. So far, little is known about the effects of seasonal components of climate change (higher spring and summer temperatures, more snow which leads to higher winter soil temperatures) on these processes. In a 4-year field experiment, we manipulated these seasonal components in a sub-arctic bog and studied the effects on the decomposition and N and P dynamics of leaf litter of Calamagrostis lapponica, Betula nana, and Rubus chamaemorus, incubated both in a common ambient environment and in the treatment plots. Mass loss in the controls increased in the order Calamagrostis < Betula < Rubus. After 4 years, overall mass loss in the climate-treatment plots was 10 % higher compared to the ambient incubation environment. Litter chemistry showed within each incubation environment only a few and species-specific responses. Compared to the interspecific differences, they resulted in only moderate climate treatment effects on mass loss and these differed among seasons and species. Neither N nor P mineralization in the litter were affected by the incubation environment. Remarkably, for all species, no net N mineralization had occurred in any of the treatments during 4 years. Species differed in P-release patterns, and summer warming strongly stimulated P release for all species. Thus, moderate changes in summer temperatures and/or winter snow addition have limited effects on litter decomposition rates and N dynamics, but summer warming does stimulate litter P release. As a result, N-limitation of plant growth in this sub-arctic bog may be sustained or even further promoted. Article in Journal/Newspaper Arctic Betula nana Climate change Rubus chamaemorus Umeå University: Publications (DiVA) Arctic Oecologia 170 3 809 819 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Climate warming Immobilization Nutrient limitation Nutrient mineralization Phosphorus release Ecology Ekologi |
spellingShingle |
Climate warming Immobilization Nutrient limitation Nutrient mineralization Phosphorus release Ecology Ekologi Aerts, R. Callaghan, T. V. Dorrepaal, E. van Logtestijn, R. S. P. Cornelissen, J. H. C. Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
topic_facet |
Climate warming Immobilization Nutrient limitation Nutrient mineralization Phosphorus release Ecology Ekologi |
description |
Litter decomposition and nutrient mineralization in high-latitude peatlands are constrained by low temperatures. So far, little is known about the effects of seasonal components of climate change (higher spring and summer temperatures, more snow which leads to higher winter soil temperatures) on these processes. In a 4-year field experiment, we manipulated these seasonal components in a sub-arctic bog and studied the effects on the decomposition and N and P dynamics of leaf litter of Calamagrostis lapponica, Betula nana, and Rubus chamaemorus, incubated both in a common ambient environment and in the treatment plots. Mass loss in the controls increased in the order Calamagrostis < Betula < Rubus. After 4 years, overall mass loss in the climate-treatment plots was 10 % higher compared to the ambient incubation environment. Litter chemistry showed within each incubation environment only a few and species-specific responses. Compared to the interspecific differences, they resulted in only moderate climate treatment effects on mass loss and these differed among seasons and species. Neither N nor P mineralization in the litter were affected by the incubation environment. Remarkably, for all species, no net N mineralization had occurred in any of the treatments during 4 years. Species differed in P-release patterns, and summer warming strongly stimulated P release for all species. Thus, moderate changes in summer temperatures and/or winter snow addition have limited effects on litter decomposition rates and N dynamics, but summer warming does stimulate litter P release. As a result, N-limitation of plant growth in this sub-arctic bog may be sustained or even further promoted. |
format |
Article in Journal/Newspaper |
author |
Aerts, R. Callaghan, T. V. Dorrepaal, E. van Logtestijn, R. S. P. Cornelissen, J. H. C. |
author_facet |
Aerts, R. Callaghan, T. V. Dorrepaal, E. van Logtestijn, R. S. P. Cornelissen, J. H. C. |
author_sort |
Aerts, R. |
title |
Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
title_short |
Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
title_full |
Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
title_fullStr |
Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
title_full_unstemmed |
Seasonal climate manipulations have only minor effects on litter decomposition rates and N dynamics but strong effects on litter P dynamics of sub-arctic bog species |
title_sort |
seasonal climate manipulations have only minor effects on litter decomposition rates and n dynamics but strong effects on litter p dynamics of sub-arctic bog species |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2012 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146472 https://doi.org/10.1007/s00442-012-2330-z |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Betula nana Climate change Rubus chamaemorus |
genre_facet |
Arctic Betula nana Climate change Rubus chamaemorus |
op_relation |
Oecologia, 0029-8549, 2012, 170:3, s. 809-819 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146472 doi:10.1007/s00442-012-2330-z PMID 22526945 ISI:000309866200021 Scopus 2-s2.0-84867514126 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00442-012-2330-z |
container_title |
Oecologia |
container_volume |
170 |
container_issue |
3 |
container_start_page |
809 |
op_container_end_page |
819 |
_version_ |
1779311752002928640 |