DOI: 10.1016/j.foreco.2014.01.008
Scopus记录号: 2-s2.0-84893578817
论文题名: Refuges for birds in fire-prone landscapes: The influence of fire severity and fire history on the distribution of forest birds
作者: Robinson N.M. ; Leonard S.W.J. ; Bennett A.F. ; Clarke M.F.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 318 起始页码: 110
结束页码: 121
语种: 英语
英文关键词: Australia
; Biological legacies
; Black Saturday fire
; Fire skips
; Foothill forest
; Residual habitat
英文摘要: Unburnt patches within a fire boundary may act as refuges for fauna, facilitating their survival and persistence within fire-prone landscapes. Unburnt patches can arise due to various processes, including topographic variation, fire behaviour, and fuel reduction from recent burning. However, the value of unburnt patches of differing characteristics to the post-fire persistence of faunal communities has rarely been examined. In this study, we examined the relative importance of fire history and severity in predicting the occurrence of birds in a burnt forest landscape. We conducted surveys in mixed eucalypt forest of south-east Australia, 2-3. years after a high intensity, landscape-scale wildfire (>200,000. ha). Sites (n= 91) were selected to encompass fire severity ranging from unburnt patches to stands of crown-burnt forest. Fire history prior to the wildfire was defined as short (<3. years) or long (>20. years) time-since-fire. Unburnt patches of long time-since-fire were important avian refuges, harbouring 20-40% more species, up to 56% more individuals and an assemblage that was distinct from that at all sites burnt by the wildfire, including low severity ground fire. No difference in species richness or composition was detected between sites in unburnt patches of short or long time-since-fire; but bird abundance was ~20% lower in patches of short time-since-fire. Unburnt and ground-burnt patches of short time-since-fire provided habitat for more species and had distinct assemblages from that of severely burnt sites. For sites severely burnt in the wildfire, there was no difference in avifaunal richness, abundance or composition between those burnt twice in rapid succession and those not burnt for >20. years. Together, these results highlight: (1) the particular importance of unburnt vegetation remaining within fire-affected areas as faunal refuges, and (2) the potential for recent planned burns to contribute to refuge habitat if it avoids severe burning in a subsequent wildfire. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66051
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Zoology, La Trobe University, Melbourne, VIC 3086, Australia; School of Life and Environmental Sciences, Deakin University, Burwood, VIC 3125, Australia
Recommended Citation:
Robinson N.M.,Leonard S.W.J.,Bennett A.F.,et al. Refuges for birds in fire-prone landscapes: The influence of fire severity and fire history on the distribution of forest birds[J]. Forest Ecology and Management,2014-01-01,318