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Impacts of different climate change regimes and extreme climatic events on an alpine meadow community
Qatar University.
Swedish National Road and Transport Research Institute, Society, environment and transport, Environment.ORCID iD: 0000-0001-5322-9827
Göteborgs Universitet.
2016 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, 21720Article in journal (Refereed) Published
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Abstract [en]

Climate variability is expected to increase in future but there exist very few experimental studies that apply different warming regimes on plant communities over several years. We studied an alpine meadow community under three warming regimes over three years. Treatments consisted of (a) a constant level of warming with open-top chambers (ca. 1.9 °C above ambient), (b) yearly stepwise increases in warming (increases of ca. 1.0, 1.9 and 3.5 °C), and (c) pulse warming, a single first-year pulse event of warming (increase of ca. 3.5 °C). Pulse warming and stepwise warming was hypothesised to cause distinct first-year and third-year effects, respectively. We found support for both hypotheses; however, the responses varied among measurement levels (whole community, canopy, bottom layer, and plant functional groups), treatments, and time. Our study revealed complex responses of the alpine plant community to the different experimentally imposed climate warming regimes. Plant cover, height and biomass frequently responded distinctly to the constant level of warming, the stepwise increase in warming and the extreme pulse-warming event. Notably, we found that stepwise warming had an accumulating effect on biomass, the responses to the different warming regimes varied among functional groups, and the short-term perturbations had negative effect on species richness and diversity.

Place, publisher, year, edition, pages
2016. Vol. 6, 21720
Keyword [en]
Climate change, Vegetation
National Category
Climate Research
Research subject
SAB, Uh Environmental protection and nature conservation
Identifiers
URN: urn:nbn:se:vti:diva-10114DOI: 10.1038/srep21720ISI: 000370344700001PubMedID: 26888225Scopus ID: 2-s2.0-84959036557OAI: oai:DiVA.org:vti-10114DiVA: diva2:912276
Available from: 2016-03-16 Created: 2016-03-16 Last updated: 2016-03-17Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
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  • nn-NB
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  • Other locale
More languages
Output format
  • html
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  • asciidoc
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