Critical periods for impact of climate warming on early seedling establishment in subarctic tundra
Abstract: Climate warming is expected to shift bioclimatic zones and plant species distribution. Yet, few studies have explored whether seedling establishment is a possible bottleneck for future migration and population resilience. We test how warming affects the early stages of seedling establishme...
Published in: | Global Change Biology |
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Language: | English |
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2009
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Online Access: | https://hdl.handle.net/10067/791550151162165141 |
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ftunivantwerpen:c:irua:79155 2023-07-16T04:01:03+02:00 Critical periods for impact of climate warming on early seedling establishment in subarctic tundra Shevtsova, Anna Graae, Bente Jessen Jochum, Till Milbau, Ann Kockelbergh, Fred Beyens, Louis Nijs, Ivan 2009 https://hdl.handle.net/10067/791550151162165141 eng eng info:eu-repo/semantics/altIdentifier/isi/000270662000009 info:eu-repo/semantics/altIdentifier/doi/10.1111/J.1365-2486.2009.01947.X info:eu-repo/semantics/closedAccess 1354-1013 Global change biology Biology info:eu-repo/semantics/article 2009 ftunivantwerpen https://doi.org/10.1111/J.1365-2486.2009.01947.X 2023-06-26T22:14:06Z Abstract: Climate warming is expected to shift bioclimatic zones and plant species distribution. Yet, few studies have explored whether seedling establishment is a possible bottleneck for future migration and population resilience. We test how warming affects the early stages of seedling establishment in 10 plant species in subarctic tundra. To zoom into the life phases where the effects of warming actually take place, we used a novel approach of breaking down the whole-season warming effect into full factorial combination of early-, mid-, and late-season warming periods. Seeds were sown in containers placed under field conditions in subarctic heath and were exposed to 3 °C elevation of surface temperature and 30% addition of summer precipitation relative to ambient. Heating was achieved with Free Air Temperature Increase systems. Whole-season heating reduced germination and establishment, significantly in four out of 10 species. The whole-season warming effect originated from additive effects of individual periods, although some of the periods had disproportionally stronger influence. Early-germinating species were susceptible to warming; the critical phases were early summer for germination and mid summer for seedling survival. Graminoids, which emerged later, were less susceptible although some negative effects during late summer were observed. Some species with intermediate germination time were affected by all periods of warming. Addition of water generally could not mitigate the negative effects of whole-season heating, but at individual species level both strengthening and amelioration of these negative effects were observed. We conclude that summer warming is likely to constrain seedling recruitment in open micro sites, which is a common seed regeneration niche in tundra ecosystem. Importantly, we described both significant temporal and species-specific variation in the sensitivity of seedling establishment to warming which needs to be taken into consideration when modelling population dynamics and ... Article in Journal/Newspaper Subarctic Tundra IRUA - Institutional Repository van de Universiteit Antwerpen Global Change Biology 15 11 2662 2680 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology |
spellingShingle |
Biology Shevtsova, Anna Graae, Bente Jessen Jochum, Till Milbau, Ann Kockelbergh, Fred Beyens, Louis Nijs, Ivan Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
topic_facet |
Biology |
description |
Abstract: Climate warming is expected to shift bioclimatic zones and plant species distribution. Yet, few studies have explored whether seedling establishment is a possible bottleneck for future migration and population resilience. We test how warming affects the early stages of seedling establishment in 10 plant species in subarctic tundra. To zoom into the life phases where the effects of warming actually take place, we used a novel approach of breaking down the whole-season warming effect into full factorial combination of early-, mid-, and late-season warming periods. Seeds were sown in containers placed under field conditions in subarctic heath and were exposed to 3 °C elevation of surface temperature and 30% addition of summer precipitation relative to ambient. Heating was achieved with Free Air Temperature Increase systems. Whole-season heating reduced germination and establishment, significantly in four out of 10 species. The whole-season warming effect originated from additive effects of individual periods, although some of the periods had disproportionally stronger influence. Early-germinating species were susceptible to warming; the critical phases were early summer for germination and mid summer for seedling survival. Graminoids, which emerged later, were less susceptible although some negative effects during late summer were observed. Some species with intermediate germination time were affected by all periods of warming. Addition of water generally could not mitigate the negative effects of whole-season heating, but at individual species level both strengthening and amelioration of these negative effects were observed. We conclude that summer warming is likely to constrain seedling recruitment in open micro sites, which is a common seed regeneration niche in tundra ecosystem. Importantly, we described both significant temporal and species-specific variation in the sensitivity of seedling establishment to warming which needs to be taken into consideration when modelling population dynamics and ... |
format |
Article in Journal/Newspaper |
author |
Shevtsova, Anna Graae, Bente Jessen Jochum, Till Milbau, Ann Kockelbergh, Fred Beyens, Louis Nijs, Ivan |
author_facet |
Shevtsova, Anna Graae, Bente Jessen Jochum, Till Milbau, Ann Kockelbergh, Fred Beyens, Louis Nijs, Ivan |
author_sort |
Shevtsova, Anna |
title |
Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
title_short |
Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
title_full |
Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
title_fullStr |
Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
title_full_unstemmed |
Critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
title_sort |
critical periods for impact of climate warming on early seedling establishment in subarctic tundra |
publishDate |
2009 |
url |
https://hdl.handle.net/10067/791550151162165141 |
genre |
Subarctic Tundra |
genre_facet |
Subarctic Tundra |
op_source |
1354-1013 Global change biology |
op_relation |
info:eu-repo/semantics/altIdentifier/isi/000270662000009 info:eu-repo/semantics/altIdentifier/doi/10.1111/J.1365-2486.2009.01947.X |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/J.1365-2486.2009.01947.X |
container_title |
Global Change Biology |
container_volume |
15 |
container_issue |
11 |
container_start_page |
2662 |
op_container_end_page |
2680 |
_version_ |
1771550488815206400 |