Effects of ambient climate and three warming treatments on fruit production in an alpine, subarctic meadow community

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Effects of ambient climate and three warming treatments on fruit production in an alpine, subarctic meadow community

Alatalo, J. M. (författare): Department of Biological and Environmental Sciences, Qatar University, Doha, Qatar; Environmental Science Center, Qatar University, Doha, Qatar

Jägerbrand, Annika, 1972- (författare): Högskolan i Halmstad,Rydberglaboratoriet för tillämpad naturvetenskap (RLAS),Calluna AB, Nacka, Sweden,Högskolan i Halmstad, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS)

Dai, J. H. (författare): Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; CAS-HEC, Islamabad, Pakistan

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Mollazehi, M. D. (författare): Qatar University, Doha, Qatar

Abdel-Salam, G. A. S. (författare): Qatar University, Doha, Qatar

Pandey, R. (författare): Indian Council of Forestry Research and Education, Dehradun, India

Molau, Ulf, 1951 (författare): Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,Göteborgs Universitet, Gothenburg, Sweden

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2021-03-31
2021
Engelska.
Ingår i: American Journal of Botany. - Oxford : Wiley. - 0002-9122 .- 1537-2197. ; 108:3, s. 411-422

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Tidskriftsartikel (refereegranskat)

Abstract Ämnesord

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Premise Climate change is having major impacts on alpine and arctic regions, and inter-annual variations in temperature are likely to increase. How increased climate variability will impact plant reproduction is unclear. Methods In a 4-year study on fruit production by an alpine plant community in northern Sweden, we applied three warming regimes: (1) a static level of warming with open-top chambers (OTC), (2) press warming, a yearly stepwise increase in warming, and (3) pulse warming, a single-year pulse event of higher warming. We analyzed the relationship between fruit production and monthly temperatures during the budding period, fruiting period, and whole fruit production period and the effect of winter and summer precipitation on fruit production. Results Year and treatment had a significant effect on total fruit production by evergreen shrubs, Cassiope tetragona, and Dryas octopetala, with large variations between treatments and years. Year, but not treatment, had a significant effect on deciduous shrubs and graminoids, both of which increased fruit production over the 4 years, while forbs were negatively affected by the press warming, but not by year. Fruit production was influenced by ambient temperature during the previous-year budding period, current-year fruiting period, and whole fruit production period. Minimum and average temperatures were more important than maximum temperature. In general, fruit production was negatively correlated with increased precipitation. Conclusions These results indicate that predicted increased climate variability and increased precipitation due to climate change may affect plant reproductive output and long-term community dynamics in alpine meadow communities.

Ämnesord

NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)

Nyckelord

climatic events
experimental warming
global warming
plant
reproduction
polar region
rain fall
plant reproductive success
tundra
Plant Sciences
climatic events

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Av författaren/redakt...: Alatalo, J. M.; Jägerbrand, Anni ...; Dai, J. H.; Mollazehi, M. D.; Abdel-Salam, G. ...; Pandey, R.; visa fler...; Molau, Ulf, 1951; visa färre...

Om ämnet

NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Botanik

NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Ekologi

Artiklar i publikationen: American Journal ...

Av lärosätet: Göteborgs universitet; Högskolan i Halmstad; Högskolan i Gävle

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