Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1461-0248.2011.01630.x |
Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis | |
Eldridge, David J.1,2; Bowker, Matthew A.3; Maestre, Fernando T.3; Roger, Erin4; Reynolds, James F.5,6; Whitford, Walter G.7 | |
通讯作者 | Eldridge, David J. |
来源期刊 | ECOLOGY LETTERS |
ISSN | 1461-023X |
出版年 | 2011 |
卷号 | 14期号:7页码:709-722 |
英文摘要 | Encroachment of woody plants into grasslands has generated considerable interest among ecologists. Syntheses of encroachment effects on ecosystem processes have been limited in extent and confined largely to pastoral land uses or particular geographical regions. We used univariate analyses, meta-analysis and structural equation modelling to test the propositions that (1) shrub encroachment does not necessarily lead to declines in ecosystem functions and (2) shrub traits influence the functional outcome of encroachment. Analyses of 43 ecosystem attributes from 244 case studies worldwide showed that some attributes consistently increased with encroachment (e. g. soil C, N), and others declined (e. g. grass cover, pH), but most exhibited variable responses. Traits of shrubs were associated with significant, though weak, structural and functional outcomes of encroachment. Our review revealed that encroachment had mixed effects on ecosystem structure and functioning at global scales, and that shrub traits influence the functional outcome of encroachment. Thus, a simple designation of encroachment as a process leading to functionally, structurally or contextually degraded ecosystems is not supported by a critical analysis of existing literature. Our results highlight that the commonly established link between shrub encroachment and degradation is not universal. |
英文关键词 | Encroachment shrubland ecosystem processes thickening shrub woody degradation desertification invasion |
类型 | Review |
语种 | 英语 |
国家 | Australia ; Spain ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000292865200010 |
WOS关键词 | WOODY PLANT ENCROACHMENT ; SEMIARID MEDITERRANEAN GRASSLANDS ; NORTH-AMERICAN GRASSLANDS ; SPATIAL HETEROGENEITY ; SEMIDESERT GRASSLAND ; SOUTHERN ETHIOPIA ; BUSH ENCROACHMENT ; CHIHUAHUAN DESERT ; SPECIES RICHNESS ; AFRICAN SAVANNA |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/167850 |
作者单位 | 1.Univ New S Wales, Sch Biol Earth & Environm Sci, Dept Environm Climate Change & Water Evolut C, Sydney, NSW 2052, Australia; 2.Univ New S Wales, Sch Biol Earth & Environm Sci, Ecol Res Ctr, Sydney, NSW 2052, Australia; 3.Univ Rey Juan Carlos, ESCET, Area Biodiversidad & Conservac, Dept Biol & Geol, Mostoles 28933, Spain; 4.Univ New S Wales, Sch Biol Earth & Environm Sci, Australian Wetlands & Rivers Ctr, Sydney, NSW 2052, Australia; 5.Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA; 6.Duke Univ, Dept Biol, Durham, NC 27708 USA; 7.New Mexico State Univ, USDA ARS Jornada Expt Range, Las Cruces, NM 88003 USA |
推荐引用方式 GB/T 7714 | Eldridge, David J.,Bowker, Matthew A.,Maestre, Fernando T.,et al. Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis[J]. New Mexico State University,2011,14(7):709-722. |
APA | Eldridge, David J.,Bowker, Matthew A.,Maestre, Fernando T.,Roger, Erin,Reynolds, James F.,&Whitford, Walter G..(2011).Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis.ECOLOGY LETTERS,14(7),709-722. |
MLA | Eldridge, David J.,et al."Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis".ECOLOGY LETTERS 14.7(2011):709-722. |
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