Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13614 |
Climatic warming strengthens a positive feedback between alpine shrubs and fire | |
Camac, James S.1,2; Williams, Richard J.2,3; Wahren, Carl-Henrik2; Hoffmann, Ary A.2,4; Vesk, Peter A.1 | |
2017-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Climate change is expected to increase fire activity and woody plant encroachment in arctic and alpine landscapes. However, the extent to which these increases interact to affect the structure, function and composition of alpine ecosystems is largely unknown. Here we use field surveys and experimental manipulations to examine how warming and fire affect recruitment, seedling growth and seedling survival in four dominant Australian alpine shrubs. We found that fire increased establishment of shrub seedlings by as much as 33-fold. Experimental warming also doubled growth rates of tall shrub seedlings and could potentially increase their survival. By contrast, warming had no effect on shrub recruitment, postfire tussock regeneration, or how tussock grass affected shrub seedling growth and survival. These findings indicate that warming, coupled with more frequent or severe fires, will likely result in an increase in the cover and abundance of evergreen shrubs. Given that shrubs are one of the most flammable components in alpine and tundra environments, warming is likely to strengthen an existing feedback between woody species abundance and fire in these ecosystems. |
英文关键词 | Bayesian models biotic interactions gap dynamics growth mortality recruitment |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404863300024 |
WOS关键词 | SOUTH-EASTERN AUSTRALIA ; PLANT COMMUNITY RESPONSES ; BOGONG HIGH-PLAINS ; VEGETATION CHANGE ; DISTURBANCE ; ECOSYSTEMS ; HEATHLAND ; DYNAMICS ; REGIMES ; ALASKA |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17569 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Melbourne, Ctr Excellence Environm Decis, Sch Biosci, Parkville, Vic 3010, Australia; 2.La Trobe Univ, Res Ctr Appl Alpine Ecol, Melbourne, Vic 3086, Australia; 3.Charles Darwin Univ, Res Inst Environm & Livelihoods, Darwin, NT 0909, Australia; 4.Univ Melbourne, Inst Bio21, Sch Biosci, Melbourne, Vic 3010, Australia |
推荐引用方式 GB/T 7714 | Camac, James S.,Williams, Richard J.,Wahren, Carl-Henrik,et al. Climatic warming strengthens a positive feedback between alpine shrubs and fire[J]. GLOBAL CHANGE BIOLOGY,2017,23(8). |
APA | Camac, James S.,Williams, Richard J.,Wahren, Carl-Henrik,Hoffmann, Ary A.,&Vesk, Peter A..(2017).Climatic warming strengthens a positive feedback between alpine shrubs and fire.GLOBAL CHANGE BIOLOGY,23(8). |
MLA | Camac, James S.,et al."Climatic warming strengthens a positive feedback between alpine shrubs and fire".GLOBAL CHANGE BIOLOGY 23.8(2017). |
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