DOI: 10.1111/gcb.12981
论文题名: Dominant tree species are at risk from exaggerated drought under climate change
作者: Fensham R.J. ; Fraser J. ; Macdermott H.J. ; Firn J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 10 起始页码: 3777
结束页码: 3785
语种: 英语
英文关键词: Climate change
; Climate envelopes
; Drought-induced tree mortality
; Recruitment
; Resilience
; Savanna
Scopus关键词: climate change
; drought
; mortality
; recruitment (population dynamics)
; savanna
; tree
; Australia
; Eucalyptus
; climate change
; drought
; forest
; physiology
; Queensland
; species difference
; tree
; Climate Change
; Droughts
; Forests
; Queensland
; Species Specificity
; Trees
英文摘要: Predicting the consequences of climate change on forest systems is difficult because trees may display species-specific responses to exaggerated droughts that may not be reflected by the climatic envelope of their geographic range. Furthermore, few studies have examined the postdrought recovery potential of drought-susceptible tree species. This study develops a robust ranking of the drought susceptibility of 21 tree species based on their mortality after two droughts (1990s and 2000s) in the savanna of north-eastern Australia. Drought-induced mortality was positively related to species dominance, negatively related to the ratio of postdrought seedlings to adults and had no relationship to the magnitude of extreme drought within the species current geographic ranges. These results suggest that predicting the consequences of exaggerated drought on species' geographic ranges is difficult, but that dominant species like Eucalyptus with relatively slow rates of population recovery and dispersal are the most susceptible. The implications for savanna ecosystems are lower tree densities and basal area. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61822
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Biological Sciences, University of Queensland, St Lucia, QLD, Australia; Queensland Herbarium, Department of Science, Information Technology and Innovation, Brisbane Botanic Gardens, Mt Coot-tha Road, Toowong, QLD, Australia; Queensland University of Technology, Science and Engineering Faculty, School of Earth, Environment and Biological Sciences, Brisbane, QLD, Australia
Recommended Citation:
Fensham R.J.,Fraser J.,Macdermott H.J.,et al. Dominant tree species are at risk from exaggerated drought under climate change[J]. Global Change Biology,2015-01-01,21(10)