Eucalypts face increasing climate stress

Butt, Nathalie, Pollock, Laura J. and McAlpine, Clive A. (2013) Eucalypts face increasing climate stress. Ecology and Evolution, 3 15: 5011-5022. doi:10.1002/ece3.873

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Author Butt, Nathalie
Pollock, Laura J.
McAlpine, Clive A.
Title Eucalypts face increasing climate stress
Journal name Ecology and Evolution   Check publisher's open access policy
ISSN 2045-7758
Publication date 2013
Sub-type Article (original research)
DOI 10.1002/ece3.873
Open Access Status DOI
Volume 3
Issue 15
Start page 5011
End page 5022
Total pages 12
Place of publication Bognor Regis, West Sussex, United Kingdom
Publisher John Wiley & Sons
Collection year 2014
Language eng
Formatted abstract
Global climate change is already impacting species and ecosystems across the planet. Trees, although long-lived, are sensitive to changes in climate, including climate extremes. Shifts in tree species' distributions will influence biodiversity and ecosystem function at scales ranging from local to landscape; dry and hot regions will be especially vulnerable. The Australian continent has been especially susceptible to climate change with extreme heat waves, droughts, and flooding in recent years, and this climate trajectory is expected to continue. We sought to understand how climate change may impact Australian ecosystems by modeling distributional changes in eucalypt species, which dominate or codominate most forested ecosystems across Australia. We modeled a representative sample of Eucalyptus and Corymbia species (n = 108, or 14% of all species) using newly available Representative Concentration Pathway (RCP) scenarios developed for the 5th Assessment Report of the IPCC, and bioclimatic and substrate predictor variables. We compared current, 2025, 2055, and 2085 distributions. Overall, Eucalyptus and Corymbia species in the central desert and open woodland regions will be the most affected, losing 20% of their climate space under the mid-range climate scenario and twice that under the extreme scenario. The least affected species, in eastern Australia, are likely to lose 10% of their climate space under the mid-range climate scenario and twice that under the extreme scenario. Range shifts will be lateral as well as polewards, and these east-west transitions will be more significant, reflecting the strong influence of precipitation rather than temperature changes in subtropical and midlatitudes. These net losses, and the direction of shifts and contractions in range, suggest that many species in the eastern and southern seaboards will be pushed toward the continental limit and that large tracts of currently treed landscapes, especially in the continental interior, will change dramatically in terms of species composition and ecosystem structure.
Keyword Climatic stress
Forest ecosystems
Rainfall seasonality
Range shifts
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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