Acclimation of subarctic vegetation to warming and increased cloudiness
Abstract Subarctic ecosystems are exposed to elevated temperatures and increased cloudiness in a changing climate with potentially important effects on vegetation structure, composition, and ecosystem functioning. We investigated the individual and combined effects of warming and increased cloudines...
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ftdoajarticles:oai:doaj.org/article:7698cd5216d3426ab272505cebdb7ad0 2024-09-15T18:02:36+00:00 Acclimation of subarctic vegetation to warming and increased cloudiness Flobert A. Ndah Marja Maljanen Anne Kasurinen Riikka Rinnan Anders Michelsen Titta Kotilainen Minna Kivimäenpää 2024-02-01T00:00:00Z https://doi.org/10.1002/pei3.10130 https://doaj.org/article/7698cd5216d3426ab272505cebdb7ad0 EN eng Wiley https://doi.org/10.1002/pei3.10130 https://doaj.org/toc/2575-6265 2575-6265 doi:10.1002/pei3.10130 https://doaj.org/article/7698cd5216d3426ab272505cebdb7ad0 Plant-Environment Interactions, Vol 5, Iss 1, Pp n/a-n/a (2024) Arctic climate change cloud cover temperature tundra vegetation change Environmental sciences GE1-350 Botany QK1-989 article 2024 ftdoajarticles https://doi.org/10.1002/pei3.10130 2024-08-05T17:49:57Z Abstract Subarctic ecosystems are exposed to elevated temperatures and increased cloudiness in a changing climate with potentially important effects on vegetation structure, composition, and ecosystem functioning. We investigated the individual and combined effects of warming and increased cloudiness on vegetation greenness and cover in mesocosms from two tundra and one palsa mire ecosystems kept under strict environmental control in climate chambers. We also investigated leaf anatomical and biochemical traits of four dominant vascular plant species (Empetrum hermaphroditum, Vaccinium myrtillus, Vaccinium vitis‐idaea, and Rubus chamaemorus). Vegetation greenness increased in response to warming in all sites and in response to increased cloudiness in the tundra sites but without associated increases in vegetation cover or biomass, except that E. hermaphroditum biomass increased under warming. The combined warming and increased cloudiness treatment had an additive effect on vegetation greenness in all sites. It also increased the cover of graminoids and forbs in one of the tundra sites. Warming increased leaf dry mass per area of V. myrtillus and R. chamaemorus, and glandular trichome density of V. myrtillus and decreased spongy intercellular space of E. hermaphroditum and V. vitis‐idaea. Increased cloudiness decreased leaf dry mass per area of V. myrtillus, palisade thickness of E. hermaphroditum, and stomata density of E. hermaphroditum and V. vitis‐idaea, and increased leaf area and epidermis thickness of V. myrtillus, leaf shape index and nitrogen of E. hermaphroditum, and palisade intercellular space of V. vitis‐idaea. The combined treatment caused thinner leaves and decreased leaf carbon for V. myrtillus, and increased leaf chlorophyll of E. hermaphroditum. We show that under future warmer increased cloudiness conditions in the Subarctic (as simulated in our experiment), vegetation composition and distribution will change, mostly dominated by graminoids and forbs. These changes will depend on the responses ... Article in Journal/Newspaper Climate change palsa Rubus chamaemorus Subarctic Tundra Directory of Open Access Journals: DOAJ Articles Plant-Environment Interactions 5 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic climate change cloud cover temperature tundra vegetation change Environmental sciences GE1-350 Botany QK1-989 |
spellingShingle |
Arctic climate change cloud cover temperature tundra vegetation change Environmental sciences GE1-350 Botany QK1-989 Flobert A. Ndah Marja Maljanen Anne Kasurinen Riikka Rinnan Anders Michelsen Titta Kotilainen Minna Kivimäenpää Acclimation of subarctic vegetation to warming and increased cloudiness |
topic_facet |
Arctic climate change cloud cover temperature tundra vegetation change Environmental sciences GE1-350 Botany QK1-989 |
description |
Abstract Subarctic ecosystems are exposed to elevated temperatures and increased cloudiness in a changing climate with potentially important effects on vegetation structure, composition, and ecosystem functioning. We investigated the individual and combined effects of warming and increased cloudiness on vegetation greenness and cover in mesocosms from two tundra and one palsa mire ecosystems kept under strict environmental control in climate chambers. We also investigated leaf anatomical and biochemical traits of four dominant vascular plant species (Empetrum hermaphroditum, Vaccinium myrtillus, Vaccinium vitis‐idaea, and Rubus chamaemorus). Vegetation greenness increased in response to warming in all sites and in response to increased cloudiness in the tundra sites but without associated increases in vegetation cover or biomass, except that E. hermaphroditum biomass increased under warming. The combined warming and increased cloudiness treatment had an additive effect on vegetation greenness in all sites. It also increased the cover of graminoids and forbs in one of the tundra sites. Warming increased leaf dry mass per area of V. myrtillus and R. chamaemorus, and glandular trichome density of V. myrtillus and decreased spongy intercellular space of E. hermaphroditum and V. vitis‐idaea. Increased cloudiness decreased leaf dry mass per area of V. myrtillus, palisade thickness of E. hermaphroditum, and stomata density of E. hermaphroditum and V. vitis‐idaea, and increased leaf area and epidermis thickness of V. myrtillus, leaf shape index and nitrogen of E. hermaphroditum, and palisade intercellular space of V. vitis‐idaea. The combined treatment caused thinner leaves and decreased leaf carbon for V. myrtillus, and increased leaf chlorophyll of E. hermaphroditum. We show that under future warmer increased cloudiness conditions in the Subarctic (as simulated in our experiment), vegetation composition and distribution will change, mostly dominated by graminoids and forbs. These changes will depend on the responses ... |
format |
Article in Journal/Newspaper |
author |
Flobert A. Ndah Marja Maljanen Anne Kasurinen Riikka Rinnan Anders Michelsen Titta Kotilainen Minna Kivimäenpää |
author_facet |
Flobert A. Ndah Marja Maljanen Anne Kasurinen Riikka Rinnan Anders Michelsen Titta Kotilainen Minna Kivimäenpää |
author_sort |
Flobert A. Ndah |
title |
Acclimation of subarctic vegetation to warming and increased cloudiness |
title_short |
Acclimation of subarctic vegetation to warming and increased cloudiness |
title_full |
Acclimation of subarctic vegetation to warming and increased cloudiness |
title_fullStr |
Acclimation of subarctic vegetation to warming and increased cloudiness |
title_full_unstemmed |
Acclimation of subarctic vegetation to warming and increased cloudiness |
title_sort |
acclimation of subarctic vegetation to warming and increased cloudiness |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1002/pei3.10130 https://doaj.org/article/7698cd5216d3426ab272505cebdb7ad0 |
genre |
Climate change palsa Rubus chamaemorus Subarctic Tundra |
genre_facet |
Climate change palsa Rubus chamaemorus Subarctic Tundra |
op_source |
Plant-Environment Interactions, Vol 5, Iss 1, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1002/pei3.10130 https://doaj.org/toc/2575-6265 2575-6265 doi:10.1002/pei3.10130 https://doaj.org/article/7698cd5216d3426ab272505cebdb7ad0 |
op_doi |
https://doi.org/10.1002/pei3.10130 |
container_title |
Plant-Environment Interactions |
container_volume |
5 |
container_issue |
1 |
_version_ |
1810440045509738496 |