DOI: 10.1111/gcb.13259
论文题名: Trade-offs between savanna woody plant diversity and carbon storage in the Brazilian Cerrado
作者: Pellegrini A.F.A. ; Socolar J.B. ; Elsen P.R. ; Giam X.
刊名: Global Change Biology
出版年: 2016
卷: 22, 期: 10 起始页码: 3373
结束页码: 3382
语种: 英语
英文关键词: biodiversity
; carbon sequestration
; carbon-biodiversity cobenefits
; cerrado
; forest
; savanna
; woody encroachment
Scopus关键词: biodiversity
; carbon sequestration
; cerrado
; climate change
; habitat management
; savanna
; species richness
; trade-off
; woody plant
; Brazil
英文摘要: Incentivizing carbon storage can be a win-win pathway to conserving biodiversity and mitigating climate change. In savannas, however, the situation is more complex. Promoting carbon storage through woody encroachment may reduce plant diversity of savanna endemics, even as the diversity of encroaching forest species increases. This trade-off has important implications for the management of biodiversity and carbon in savanna habitats, but has rarely been evaluated empirically. We quantified the nature of carbon-diversity relationships in the Brazilian Cerrado by analyzing how woody plant species richness changed with carbon storage in 206 sites across the 2.2 million km2 region at two spatial scales. We show that total woody plant species diversity increases with carbon storage, as expected, but that the richness of endemic savanna woody plant species declines with carbon storage both at the local scale, as woody biomass accumulates within plots, and at the landscape scale, as forest replaces savanna. The sharpest trade-offs between carbon storage and savanna diversity occurred at the early stages of carbon accumulation at the local scale but the final stages of forest encroachment at the landscape scale. Furthermore, the loss of savanna species quickens in the final stages of forest encroachment, and beyond a point, savanna species losses outpace forest species gains with increasing carbon accumulation. Our results suggest that although woody encroachment in savanna ecosystems may provide substantial carbon benefits, it comes at the rapidly accruing cost of woody plant species adapted to the open savanna environment. Moreover, the dependence of carbon-diversity trade-offs on the amount of savanna area remaining requires land managers to carefully consider local conditions. Widespread woody encroachment in both Australian and African savannas and grasslands may present similar threats to biodiversity. © 2016 John Wiley & Sons Ltd 资助项目: Pellegrini, A.F.A.
; Department of Ecology and Evolutionary Biology, Princeton UniversityUnited States
; 电子邮件: apellegr@princeton.edu
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61288
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, United States; School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Pellegrini A.F.A.,Socolar J.B.,Elsen P.R.,et al. Trade-offs between savanna woody plant diversity and carbon storage in the Brazilian Cerrado[J]. Global Change Biology,2016-01-01,22(10)