DOI: 10.1007/s10584-016-1890-z
Scopus记录号: 2-s2.0-85008512280
论文题名: Anuran responses to pressures from high-amplitude drought–flood–drought sequences under climate change
作者: Mac Nally R. ; Horrocks G.F.B. ; Lada H.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2017
卷: 141, 期: 2 起始页码: 243
结束页码: 257
语种: 英语
Scopus关键词: Drought
; Forestry
; Surveys
; Austral winter
; Geographic variation
; High amplitudes
; Occupancy rate
; Regional climate
; South-eastern Australia
; Species richness
; Temporal pattern
; Climate change
; abundance
; climate change
; drought
; extreme event
; flood
; frog
; geographical variation
; population decline
; regional climate
; species occurrence
; species richness
; Australia
; Amphibia
; Anura
英文摘要: We measured changes in the occurrence, abundances and evidence of breeding of frogs to a sequence of severe drought–extreme wet–drought in south-eastern Australia, which is projected to characterize the regional climate in the coming decades. We collected data on anuran abundances, species richness and breeding by using aural surveys and visual searches in 80 waterbodies in 10 landscapes. We surveyed six times during the austral winter-springs of 2006 and 2007 (9–10 years into the 13-year ‘Big Dry’ drought), six times in the corresponding seasons of 2011 and 2012 (the ‘Big Wet’) and another six times in 2014 and 2015, which had lapsed into another intense dry period (‘post-Big Wet’). The relatively small gains in species occupancy rates and evidence of breeding achieved during the Big Wet following the Big Dry were eroded and reversed in the years after the Big Wet period, with several biotic measures falling substantially below the values for the Big Dry. The global prognosis is for long-term drying and warming, notwithstanding much geographic variation in the degree and temporal patterns of drying. Longer droughts with short periods of wet/benign conditions are projected for many parts of the world. For water-dependent fauna such as most amphibians, our results signal widespread declines in lowland regions experiencing such patterns. If droughts exceed lifespans of frogs, then resistance to drought will be so low that populations will plunge to levels from which the short periods of more benign conditions will be insufficient to enable substantial recovery. © 2017, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84081
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Institute for Applied Ecology, The University of Canberra, Bruce, ACT, Australia
Recommended Citation:
Mac Nally R.,Horrocks G.F.B.,Lada H.. Anuran responses to pressures from high-amplitude drought–flood–drought sequences under climate change[J]. Climatic Change,2017-01-01,141(2)