Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales.
1. Changing temperature regimes and precipitation patterns in the Subarctic will impact on vegetation composition and diversity including those of bryophyte and lichen communities, which are major drivers of high-latitude carbon and nutrient cycling and hydrology. 2. We investigated the relative imp...
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2009
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Online Access: | https://research.wur.nl/en/publications/determinants-of-cryptogam-composition-and-diversity-in-sphagnum-d https://doi.org/10.1111/j.1365-2745.2008.01472.x |
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ftunivwagenin:oai:library.wur.nl:wurpubs/389055 2024-02-04T09:58:32+01:00 Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. Lang, S.I. Cornelissen, J.H.C. Hölzer, A. ter Braak, C.J.F. Ahrens, M. Callaghan, T.V. Aerts, R. 2009 application/pdf https://research.wur.nl/en/publications/determinants-of-cryptogam-composition-and-diversity-in-sphagnum-d https://doi.org/10.1111/j.1365-2745.2008.01472.x en eng https://edepot.wur.nl/107988 https://research.wur.nl/en/publications/determinants-of-cryptogam-composition-and-diversity-in-sphagnum-d doi:10.1111/j.1365-2745.2008.01472.x info:eu-repo/semantics/restrictedAccess Wageningen University & Research Journal of Ecology 97 (2009) 2 ISSN: 0022-0477 alaskan arctic tundra community structure global change hylocomium-splendens nutrient availability physical gradients response surfaces simulated environmental-change species composition western canada info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2009 ftunivwagenin https://doi.org/10.1111/j.1365-2745.2008.01472.x 2024-01-10T23:23:29Z 1. Changing temperature regimes and precipitation patterns in the Subarctic will impact on vegetation composition and diversity including those of bryophyte and lichen communities, which are major drivers of high-latitude carbon and nutrient cycling and hydrology. 2. We investigated the relative importance of such impacts at different temporal, spatial and plant functional scales in subarctic Sphagnum fuscum -dominated peatlands, comprising both an in situ warming experiment and natural climatic and topographic gradients in northern Sweden and Norway. We applied multivariate analyses to investigate the relationships among cryptogam and vascular plant species composition and abiotic (temperature, moisture) and biotic ( Sphagnum growth) regimes at various scales. 3. At the short-term temporal scale (4-year warming experiment), increased temperature yielded no clear effect on cryptogam or vascular plant species composition. Spatially, direct effects of temperature were decisive for overall species composition across regions (macro-scale) rather than within one region (meso-scale). Moisture and Sphagnum growth were drivers of species composition at all spatial scales, and Sphagnum growth itself depended on its position on the microtopographic gradient and on temperature. 4. Grouping of bryophytes and lichens at increasing scales of functional aggregation from species, growth form to the major higher taxon level ( Sphagnum , other mosses, liverworts, lichens) revealed mostly increasing correlation with climate regimes and Sphagnum growth. Excluding liverworts from the analysis tended to reduce the correlation. 5. Abundances of lichens, liverworts, non- Sphagnum mosses and (to a lesser degree) vascular plants were negatively related to Sphagnum abundance. Few cryptogam and vascular plant species showed a positive relationship with Sphagnum abundance. Correspondingly, cryptogam species richness and Shannon Index on peatlands strongly declined as Sphagnum abundance increased, while indices for vascular plants showed no ... Article in Journal/Newspaper Arctic Northern Sweden Subarctic Tundra Wageningen UR (University & Research Centre): Digital Library Arctic Canada Norway Journal of Ecology 97 2 299 310 |
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Open Polar |
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Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
alaskan arctic tundra community structure global change hylocomium-splendens nutrient availability physical gradients response surfaces simulated environmental-change species composition western canada |
spellingShingle |
alaskan arctic tundra community structure global change hylocomium-splendens nutrient availability physical gradients response surfaces simulated environmental-change species composition western canada Lang, S.I. Cornelissen, J.H.C. Hölzer, A. ter Braak, C.J.F. Ahrens, M. Callaghan, T.V. Aerts, R. Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
topic_facet |
alaskan arctic tundra community structure global change hylocomium-splendens nutrient availability physical gradients response surfaces simulated environmental-change species composition western canada |
description |
1. Changing temperature regimes and precipitation patterns in the Subarctic will impact on vegetation composition and diversity including those of bryophyte and lichen communities, which are major drivers of high-latitude carbon and nutrient cycling and hydrology. 2. We investigated the relative importance of such impacts at different temporal, spatial and plant functional scales in subarctic Sphagnum fuscum -dominated peatlands, comprising both an in situ warming experiment and natural climatic and topographic gradients in northern Sweden and Norway. We applied multivariate analyses to investigate the relationships among cryptogam and vascular plant species composition and abiotic (temperature, moisture) and biotic ( Sphagnum growth) regimes at various scales. 3. At the short-term temporal scale (4-year warming experiment), increased temperature yielded no clear effect on cryptogam or vascular plant species composition. Spatially, direct effects of temperature were decisive for overall species composition across regions (macro-scale) rather than within one region (meso-scale). Moisture and Sphagnum growth were drivers of species composition at all spatial scales, and Sphagnum growth itself depended on its position on the microtopographic gradient and on temperature. 4. Grouping of bryophytes and lichens at increasing scales of functional aggregation from species, growth form to the major higher taxon level ( Sphagnum , other mosses, liverworts, lichens) revealed mostly increasing correlation with climate regimes and Sphagnum growth. Excluding liverworts from the analysis tended to reduce the correlation. 5. Abundances of lichens, liverworts, non- Sphagnum mosses and (to a lesser degree) vascular plants were negatively related to Sphagnum abundance. Few cryptogam and vascular plant species showed a positive relationship with Sphagnum abundance. Correspondingly, cryptogam species richness and Shannon Index on peatlands strongly declined as Sphagnum abundance increased, while indices for vascular plants showed no ... |
format |
Article in Journal/Newspaper |
author |
Lang, S.I. Cornelissen, J.H.C. Hölzer, A. ter Braak, C.J.F. Ahrens, M. Callaghan, T.V. Aerts, R. |
author_facet |
Lang, S.I. Cornelissen, J.H.C. Hölzer, A. ter Braak, C.J.F. Ahrens, M. Callaghan, T.V. Aerts, R. |
author_sort |
Lang, S.I. |
title |
Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
title_short |
Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
title_full |
Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
title_fullStr |
Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
title_full_unstemmed |
Determinants of cryptogam composition and diversity in Sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
title_sort |
determinants of cryptogam composition and diversity in sphagnum-dominated peatlands: the importance of temporal, spatial and functional scales. |
publishDate |
2009 |
url |
https://research.wur.nl/en/publications/determinants-of-cryptogam-composition-and-diversity-in-sphagnum-d https://doi.org/10.1111/j.1365-2745.2008.01472.x |
geographic |
Arctic Canada Norway |
geographic_facet |
Arctic Canada Norway |
genre |
Arctic Northern Sweden Subarctic Tundra |
genre_facet |
Arctic Northern Sweden Subarctic Tundra |
op_source |
Journal of Ecology 97 (2009) 2 ISSN: 0022-0477 |
op_relation |
https://edepot.wur.nl/107988 https://research.wur.nl/en/publications/determinants-of-cryptogam-composition-and-diversity-in-sphagnum-d doi:10.1111/j.1365-2745.2008.01472.x |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1111/j.1365-2745.2008.01472.x |
container_title |
Journal of Ecology |
container_volume |
97 |
container_issue |
2 |
container_start_page |
299 |
op_container_end_page |
310 |
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1789962987773100032 |