Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming
Aims: Litter decomposition is an important driver of soil carbon and nutrient cycling in nutrient-limited Arctic ecosystems. However, climate change is expected to induce changes that directly or indirectly affect decomposition. We examined the direct effects of long-term warming relative to differe...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2020
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ftumeauniv:oai:DiVA.org:umu-171946 2023-10-09T21:48:37+02:00 Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming Sarneel, Judith M. Sundqvist, Maja K. Molau, Ulf Björkman, Mats P. Alatalo, Juha M. 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171946 https://doi.org/10.1016/j.scitotenv.2020.138304 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Ecology & Biodiversity Group, Utrecht University, the Netherlands; Plant Ecophysiology Group, Utrecht University, the Netherlands Science of the Total Environment, 0048-9697, 2020, 724, s. 1-8 orcid:0000-0001-6187-499x http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171946 doi:10.1016/j.scitotenv.2020.138304 ISI:000532695100012 Scopus 2-s2.0-85082674999 info:eu-repo/semantics/openAccess Open-top chamber Global warming Litter quality Tea Bag Index for decomposition Vegetation composition Soil chemistry Arctic Environmental Sciences Miljövetenskap Article in journal info:eu-repo/semantics/article text 2020 ftumeauniv https://doi.org/10.1016/j.scitotenv.2020.138304 2023-09-22T13:57:25Z Aims: Litter decomposition is an important driver of soil carbon and nutrient cycling in nutrient-limited Arctic ecosystems. However, climate change is expected to induce changes that directly or indirectly affect decomposition. We examined the direct effects of long-term warming relative to differences in soil abiotic properties associated with vegetation type on litter decomposition across six subarctic vegetation types. Methods: In six vegetation types, rooibos and green tea bags were buried for 70–75 days at 8 cm depth inside warmed (by open-top chambers) and control plots that had been in place for 20–25 years. Standardized initial decomposition rate and stabilization of the labile material fraction of tea (into less decomposable material) were calculated from tea mass losses. Soil moisture and temperature were measured bi-weekly during summer and plant-available nutrients were measured with resin probes. Results: Initial decomposition rate was decreased by the warming treatment. Stabilization was less affected by warming and determined by vegetation type and soil moisture. Soil metal concentrations impeded both initial decomposition rate and stabilization. Conclusions: While a warmer Arctic climate will likely have direct effects on initial litter decomposition rates in tundra, stabilization of organic matter was more affected by vegetation type and soil parameters and less prone to be affected by direct effects of warming. Article in Journal/Newspaper Arctic Climate change Global warming Subarctic Tundra Umeå University: Publications (DiVA) Arctic Science of The Total Environment 724 138304 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Open-top chamber Global warming Litter quality Tea Bag Index for decomposition Vegetation composition Soil chemistry Arctic Environmental Sciences Miljövetenskap |
spellingShingle |
Open-top chamber Global warming Litter quality Tea Bag Index for decomposition Vegetation composition Soil chemistry Arctic Environmental Sciences Miljövetenskap Sarneel, Judith M. Sundqvist, Maja K. Molau, Ulf Björkman, Mats P. Alatalo, Juha M. Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
topic_facet |
Open-top chamber Global warming Litter quality Tea Bag Index for decomposition Vegetation composition Soil chemistry Arctic Environmental Sciences Miljövetenskap |
description |
Aims: Litter decomposition is an important driver of soil carbon and nutrient cycling in nutrient-limited Arctic ecosystems. However, climate change is expected to induce changes that directly or indirectly affect decomposition. We examined the direct effects of long-term warming relative to differences in soil abiotic properties associated with vegetation type on litter decomposition across six subarctic vegetation types. Methods: In six vegetation types, rooibos and green tea bags were buried for 70–75 days at 8 cm depth inside warmed (by open-top chambers) and control plots that had been in place for 20–25 years. Standardized initial decomposition rate and stabilization of the labile material fraction of tea (into less decomposable material) were calculated from tea mass losses. Soil moisture and temperature were measured bi-weekly during summer and plant-available nutrients were measured with resin probes. Results: Initial decomposition rate was decreased by the warming treatment. Stabilization was less affected by warming and determined by vegetation type and soil moisture. Soil metal concentrations impeded both initial decomposition rate and stabilization. Conclusions: While a warmer Arctic climate will likely have direct effects on initial litter decomposition rates in tundra, stabilization of organic matter was more affected by vegetation type and soil parameters and less prone to be affected by direct effects of warming. |
format |
Article in Journal/Newspaper |
author |
Sarneel, Judith M. Sundqvist, Maja K. Molau, Ulf Björkman, Mats P. Alatalo, Juha M. |
author_facet |
Sarneel, Judith M. Sundqvist, Maja K. Molau, Ulf Björkman, Mats P. Alatalo, Juha M. |
author_sort |
Sarneel, Judith M. |
title |
Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
title_short |
Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
title_full |
Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
title_fullStr |
Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
title_full_unstemmed |
Decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
title_sort |
decomposition rate and stabilization across six tundra vegetation types exposed to >20 years of warming |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171946 https://doi.org/10.1016/j.scitotenv.2020.138304 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Global warming Subarctic Tundra |
genre_facet |
Arctic Climate change Global warming Subarctic Tundra |
op_relation |
Science of the Total Environment, 0048-9697, 2020, 724, s. 1-8 orcid:0000-0001-6187-499x http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171946 doi:10.1016/j.scitotenv.2020.138304 ISI:000532695100012 Scopus 2-s2.0-85082674999 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2020.138304 |
container_title |
Science of The Total Environment |
container_volume |
724 |
container_start_page |
138304 |
_version_ |
1779311700593344512 |