Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone
Abstract Questions Changes in vegetation structure, including shrub expansion, occur in forest–tundra ecotones in sub‐arctic regions. However, the community‐level processes driving vegetation change are poorly understood. We aimed to evaluate factors mediating the assembly processes for community in...
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crwiley:10.1111/jvs.12818 2024-09-09T19:27:26+00:00 Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone Kitagawa, Ryo Masumoto, Shota Nishizawa, Keita Kaneko, Ryo Osono, Takashi Hasegawa, Motohiro Uchida, Masaki Mori, Akira S. Kikvidze, Zaal 2020 http://dx.doi.org/10.1111/jvs.12818 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12818 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jvs.12818 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Vegetation Science volume 31, issue 2, page 234-244 ISSN 1100-9233 1654-1103 journal-article 2020 crwiley https://doi.org/10.1111/jvs.12818 2024-06-18T04:15:36Z Abstract Questions Changes in vegetation structure, including shrub expansion, occur in forest–tundra ecotones in sub‐arctic regions. However, the community‐level processes driving vegetation change are poorly understood. We aimed to evaluate factors mediating the assembly processes for community initiators of vegetation change and determine the ecological processes driving vegetation changes. Location Kuujjuarapik/Whapmagoostui (55.31 N, 77.75 W), Quebec, Canada. Methods Vegetation was surveyed in eight 100‐m line transects with 16 quadrats (1 m × 1 m) per transect established in both forest and tundra habitats. To elucidate the assembly processes of the initiators of vegetation change and other community components of the forest–tundra ecotone, we evaluated β‐diversity among and within habitats and its causal factors (i.e. spatial and environmental factors). Interspecies interactions were estimated based on the patterns of co‐occurrence between all pairs of species. Results Although environmental and spatial factors significantly affected the community structure of the specific and shared species in the forest habitat, the variation in community structure within and among tundra habitats was not explained by environmental or spatial factors for any community components. Therefore, community assemblages of shared species in tundra habitat were independent from local conditions determined by environment and spatial location. However, we found a positive co‐occurrence pattern among the dominant shared shrubs to be a characteristic of the tundra habitat, and this relationship explained the patterns of community structure within tundra habitats. Conclusions Community assemblages of initiators of vegetation change in tundra habitats are unrestricted by any external factors, such as dispersal limitation or environmental filtering. However, positive relationships in the abundance or occurrence of dominant shrubs may indicate a positive feedback loop between colonizing species and environmental modifications. This ... Article in Journal/Newspaper Arctic Kuujjuarapik Tundra Wiley Online Library Arctic Canada Kuujjuarapik ENVELOPE(-77.762,-77.762,55.276,55.276) Whapmagoostui ENVELOPE(-77.750,-77.750,55.250,55.250) Journal of Vegetation Science 31 2 234 244 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Questions Changes in vegetation structure, including shrub expansion, occur in forest–tundra ecotones in sub‐arctic regions. However, the community‐level processes driving vegetation change are poorly understood. We aimed to evaluate factors mediating the assembly processes for community initiators of vegetation change and determine the ecological processes driving vegetation changes. Location Kuujjuarapik/Whapmagoostui (55.31 N, 77.75 W), Quebec, Canada. Methods Vegetation was surveyed in eight 100‐m line transects with 16 quadrats (1 m × 1 m) per transect established in both forest and tundra habitats. To elucidate the assembly processes of the initiators of vegetation change and other community components of the forest–tundra ecotone, we evaluated β‐diversity among and within habitats and its causal factors (i.e. spatial and environmental factors). Interspecies interactions were estimated based on the patterns of co‐occurrence between all pairs of species. Results Although environmental and spatial factors significantly affected the community structure of the specific and shared species in the forest habitat, the variation in community structure within and among tundra habitats was not explained by environmental or spatial factors for any community components. Therefore, community assemblages of shared species in tundra habitat were independent from local conditions determined by environment and spatial location. However, we found a positive co‐occurrence pattern among the dominant shared shrubs to be a characteristic of the tundra habitat, and this relationship explained the patterns of community structure within tundra habitats. Conclusions Community assemblages of initiators of vegetation change in tundra habitats are unrestricted by any external factors, such as dispersal limitation or environmental filtering. However, positive relationships in the abundance or occurrence of dominant shrubs may indicate a positive feedback loop between colonizing species and environmental modifications. This ... |
author2 |
Kikvidze, Zaal |
format |
Article in Journal/Newspaper |
author |
Kitagawa, Ryo Masumoto, Shota Nishizawa, Keita Kaneko, Ryo Osono, Takashi Hasegawa, Motohiro Uchida, Masaki Mori, Akira S. |
spellingShingle |
Kitagawa, Ryo Masumoto, Shota Nishizawa, Keita Kaneko, Ryo Osono, Takashi Hasegawa, Motohiro Uchida, Masaki Mori, Akira S. Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
author_facet |
Kitagawa, Ryo Masumoto, Shota Nishizawa, Keita Kaneko, Ryo Osono, Takashi Hasegawa, Motohiro Uchida, Masaki Mori, Akira S. |
author_sort |
Kitagawa, Ryo |
title |
Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
title_short |
Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
title_full |
Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
title_fullStr |
Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
title_full_unstemmed |
Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
title_sort |
positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/jvs.12818 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12818 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jvs.12818 |
long_lat |
ENVELOPE(-77.762,-77.762,55.276,55.276) ENVELOPE(-77.750,-77.750,55.250,55.250) |
geographic |
Arctic Canada Kuujjuarapik Whapmagoostui |
geographic_facet |
Arctic Canada Kuujjuarapik Whapmagoostui |
genre |
Arctic Kuujjuarapik Tundra |
genre_facet |
Arctic Kuujjuarapik Tundra |
op_source |
Journal of Vegetation Science volume 31, issue 2, page 234-244 ISSN 1100-9233 1654-1103 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jvs.12818 |
container_title |
Journal of Vegetation Science |
container_volume |
31 |
container_issue |
2 |
container_start_page |
234 |
op_container_end_page |
244 |
_version_ |
1809896862655709184 |