DOI: 10.1111/gcb.12203
论文题名: Evolutionary refugia and ecological refuges: Key concepts for conserving Australian arid zone freshwater biodiversity under climate change
作者: Davis J. ; Pavlova A. ; Thompson R. ; Sunnucks P.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 7 起始页码: 1970
结束页码: 1984
语种: 英语
英文关键词: Arid environments
; Climate change
; Climatic decoupling
; Freshwater biodiversity
; Refuges
; Refugia
Scopus关键词: fresh water
; arid region
; aridification
; biodiversity
; biota
; climate change
; climate effect
; conceptual framework
; freshwater ecosystem
; future prospect
; refuge
; refugium
; survival
; animal
; aquatic species
; Australia
; biodiversity
; climate change
; desert climate
; ecosystem
; environmental protection
; growth, development and aging
; methodology
; review
; Animals
; Aquatic Organisms
; Australia
; Biodiversity
; Climate Change
; Conservation of Natural Resources
; Desert Climate
; Ecosystem
; Fresh Water
; Australia
; Invertebrata
; Pisces
英文摘要: Refugia have been suggested as priority sites for conservation under climate change because of their ability to facilitate survival of biota under adverse conditions. Here, we review the likely role of refugial habitats in conserving freshwater biota in arid Australian aquatic systems where the major long-term climatic influence has been aridification. We introduce a conceptual model that characterizes evolutionary refugia and ecological refuges based on our review of the attributes of aquatic habitats and freshwater taxa (fishes and aquatic invertebrates) in arid Australia. We also identify methods of recognizing likely future refugia and approaches to assessing the vulnerability of arid-adapted freshwater biota to a warming and drying climate. Evolutionary refugia in arid areas are characterized as permanent, groundwater-dependent habitats (subterranean aquifers and springs) supporting vicariant relicts and short-range endemics. Ecological refuges can vary across space and time, depending on the dispersal abilities of aquatic taxa and the geographical proximity and hydrological connectivity of aquatic habitats. The most important are the perennial waterbodies (both groundwater and surface water fed) that support obligate aquatic organisms. These species will persist where suitable habitats are available and dispersal pathways are maintained. For very mobile species (invertebrates with an aerial dispersal phase) evolutionary refugia may also act as ecological refuges. Evolutionary refugia are likely future refugia because their water source (groundwater) is decoupled from local precipitation. However, their biota is extremely vulnerable to changes in local conditions because population extinction risks cannot be abated by the dispersal of individuals from other sites. Conservation planning must incorporate a high level of protection for aquifers that support refugial sites. Ecological refuges are vulnerable to changes in regional climate because they have little thermal or hydrological buffering. Accordingly, conservation planning must focus on maintaining meta-population processes, especially through dynamic connectivity between aquatic habitats at a landscape scale. © 2013 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62411
Appears in Collections: 影响、适应和脆弱性
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作者单位: Australian Centre for Biodiversity, School of Biological Sciences, Monash University, Clayton, VIC, 3800, Australia
Recommended Citation:
Davis J.,Pavlova A.,Thompson R.,et al. Evolutionary refugia and ecological refuges: Key concepts for conserving Australian arid zone freshwater biodiversity under climate change[J]. Global Change Biology,2013-01-01,19(7)