Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation.
Bryophytes cover large territories in cold biomes, where they control soil temperature regime, and therefore permafrost, carbon and nutrient dynamics. The mechanisms of this control remain unclear. We quantified the dependence of soil temperature fluctuations under bryophyte mats on the interplay of...
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2013
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Online Access: | https://research.vu.nl/en/publications/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 https://doi.org/10.1111/1365-2435.12127 https://hdl.handle.net/1871.1/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 |
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ftvuamstcris:oai:research.vu.nl:publications/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 2024-10-13T14:05:41+00:00 Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. Soudzilovskaia, N.A. Cornelissen, J.H.C. van Bodegom, P.M. 2013 https://research.vu.nl/en/publications/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 https://doi.org/10.1111/1365-2435.12127 https://hdl.handle.net/1871.1/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 eng eng info:eu-repo/semantics/restrictedAccess Soudzilovskaia , N A , Cornelissen , J H C & van Bodegom , P M 2013 , ' Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. ' , Functional Ecology , vol. 27 , pp. 1442-1454 . https://doi.org/10.1111/1365-2435.12127 article 2013 ftvuamstcris https://doi.org/10.1111/1365-2435.12127 2024-09-26T14:52:09Z Bryophytes cover large territories in cold biomes, where they control soil temperature regime, and therefore permafrost, carbon and nutrient dynamics. The mechanisms of this control remain unclear. We quantified the dependence of soil temperature fluctuations under bryophyte mats on the interplay of bryophyte heat conductance traits, mat thickness, density and moisture regimes. For seventeen predominant bryophytes in six typical subarctic ecosystems, we assessed in situ soil temperature dynamics under bryophyte mats in comparison with bryophyte-removal patches and per-species mat field moisture. In a complimentary laboratory investigation, we studied how per-species bryophyte thermal conductivity and volumetric heat capacity depend on mat density and moisture content. Subsequently, we tested whether heat transfer through bryophyte mats could be modelled as a function of mat thickness, thermal conductivity and volumetric heat capacity, the latter two being determined by mat density and field moisture content. Laboratory assessment revealed that bryophyte thermal conductivity and volumetric heat capacity were independent of mat density, and depended linearly on mat moisture content, but the dependencies were not species-specific. In the field, bryophytes reduced amplitudes of soil temperature fluctuations and freeze-thaw frequency during the growing season, but not mean soil temperature. These effects differed between species and between ecosystems, being strongest in Sphagnum fuscum-dominated dry tundra, but were well explained by bryophyte mat thickness and field moisture content as affecting thermal conductivity and volumetric heat capacity. We suggest that reduction in soil temperature amplitudes is a generic feature in (sub) arctic ecosystems and should be considered as an important mechanism of bryophyte control on carbon and nutrient turnover. Although heat transfer through bryophyte mats differs greatly among species and ecosystems, species differences are fully explained by differences in mat thickness ... Article in Journal/Newspaper Arctic permafrost Subarctic Tundra Vrije Universiteit Amsterdam (VU): Research Portal Arctic Functional Ecology 27 6 1442 1454 |
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Vrije Universiteit Amsterdam (VU): Research Portal |
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ftvuamstcris |
language |
English |
description |
Bryophytes cover large territories in cold biomes, where they control soil temperature regime, and therefore permafrost, carbon and nutrient dynamics. The mechanisms of this control remain unclear. We quantified the dependence of soil temperature fluctuations under bryophyte mats on the interplay of bryophyte heat conductance traits, mat thickness, density and moisture regimes. For seventeen predominant bryophytes in six typical subarctic ecosystems, we assessed in situ soil temperature dynamics under bryophyte mats in comparison with bryophyte-removal patches and per-species mat field moisture. In a complimentary laboratory investigation, we studied how per-species bryophyte thermal conductivity and volumetric heat capacity depend on mat density and moisture content. Subsequently, we tested whether heat transfer through bryophyte mats could be modelled as a function of mat thickness, thermal conductivity and volumetric heat capacity, the latter two being determined by mat density and field moisture content. Laboratory assessment revealed that bryophyte thermal conductivity and volumetric heat capacity were independent of mat density, and depended linearly on mat moisture content, but the dependencies were not species-specific. In the field, bryophytes reduced amplitudes of soil temperature fluctuations and freeze-thaw frequency during the growing season, but not mean soil temperature. These effects differed between species and between ecosystems, being strongest in Sphagnum fuscum-dominated dry tundra, but were well explained by bryophyte mat thickness and field moisture content as affecting thermal conductivity and volumetric heat capacity. We suggest that reduction in soil temperature amplitudes is a generic feature in (sub) arctic ecosystems and should be considered as an important mechanism of bryophyte control on carbon and nutrient turnover. Although heat transfer through bryophyte mats differs greatly among species and ecosystems, species differences are fully explained by differences in mat thickness ... |
format |
Article in Journal/Newspaper |
author |
Soudzilovskaia, N.A. Cornelissen, J.H.C. van Bodegom, P.M. |
spellingShingle |
Soudzilovskaia, N.A. Cornelissen, J.H.C. van Bodegom, P.M. Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
author_facet |
Soudzilovskaia, N.A. Cornelissen, J.H.C. van Bodegom, P.M. |
author_sort |
Soudzilovskaia, N.A. |
title |
Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
title_short |
Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
title_full |
Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
title_fullStr |
Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
title_full_unstemmed |
Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
title_sort |
dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. |
publishDate |
2013 |
url |
https://research.vu.nl/en/publications/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 https://doi.org/10.1111/1365-2435.12127 https://hdl.handle.net/1871.1/f2e0f7b6-d43f-4aa3-92ba-39fb4ea61ca2 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Subarctic Tundra |
genre_facet |
Arctic permafrost Subarctic Tundra |
op_source |
Soudzilovskaia , N A , Cornelissen , J H C & van Bodegom , P M 2013 , ' Dominant bryophyte control over high-latitude soil temperature fluctuations predicted by heat transfer traits, field moisture regime and laws of thermal insulation. ' , Functional Ecology , vol. 27 , pp. 1442-1454 . https://doi.org/10.1111/1365-2435.12127 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/1365-2435.12127 |
container_title |
Functional Ecology |
container_volume |
27 |
container_issue |
6 |
container_start_page |
1442 |
op_container_end_page |
1454 |
_version_ |
1812811749167988736 |