Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1654-1103.2009.01067.x |
Positive effects of shrubs on herbaceous species richness across several spatial scales: evidence from the semiarid Andean subtropics | |
Lopez, Ramiro Pablo1,2; Larrea-Alcazar, Daniel M.1; Teresa, Ortuno2,3 | |
通讯作者 | Lopez, Ramiro Pablo |
来源期刊 | JOURNAL OF VEGETATION SCIENCE
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ISSN | 1100-9233 |
EISSN | 1654-1103 |
出版年 | 2009 |
卷号 | 20期号:4页码:728-734 |
英文摘要 | Question What is the effect of shrubs on herbaceous species richness at three spatial scales: quadrat, site, and region? Location Prepuna, subtropical semi-arid Andes. Methods At eight sites, we recorded the presence of herbaceous species in spaces beneath shrubs/small trees and in open areas. At the quadrat scale, the average species number per quadrat was calculated and compared between the two microhabitats (shrubs/open). At the local (site) scale, all quadrats of each site were pooled according to microhabitat, and all sites were then combined for the regional analysis. Results and conclusions We found greater herbaceous species richness below shrubs at all three spatial scales considered. Several species were found exclusively associated with the shrub undercanopy. This effect seems to depend more on greater inventory diversity at the different scales than on greater differentiation diversity in the herbaceous communities associated with shrubs. Facilitation seems to be responsible for the increase of species richness beneath shrubs, but further experimental study is needed to obtain insight into the underlying mechanisms. |
英文关键词 | Arid and semiarid regions Facilitation Herbaceous species richness Shrubs Small trees Spatial scale |
类型 | Article |
语种 | 英语 |
国家 | Bolivia |
收录类别 | SCI-E |
WOS记录号 | WOS:000267755000016 |
WOS关键词 | NURSE-PLANTS ; ARID ECOSYSTEM ; CUSHION PLANT ; FACILITATION ; COMMUNITIES ; VEGETATION ; DYNAMICS ; GRADIENT ; STRESS ; DESERT |
WOS类目 | Plant Sciences ; Ecology ; Forestry |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/161830 |
作者单位 | 1.Univ Mayor San Andres, Inst Ecol, Ctr Anal Espacial, La Paz, Bolivia; 2.Herbario Nacl Bolivia, La Paz, Bolivia; 3.Museo Nacl Hist Nat, La Paz, Bolivia |
推荐引用方式 GB/T 7714 | Lopez, Ramiro Pablo,Larrea-Alcazar, Daniel M.,Teresa, Ortuno. Positive effects of shrubs on herbaceous species richness across several spatial scales: evidence from the semiarid Andean subtropics[J],2009,20(4):728-734. |
APA | Lopez, Ramiro Pablo,Larrea-Alcazar, Daniel M.,&Teresa, Ortuno.(2009).Positive effects of shrubs on herbaceous species richness across several spatial scales: evidence from the semiarid Andean subtropics.JOURNAL OF VEGETATION SCIENCE,20(4),728-734. |
MLA | Lopez, Ramiro Pablo,et al."Positive effects of shrubs on herbaceous species richness across several spatial scales: evidence from the semiarid Andean subtropics".JOURNAL OF VEGETATION SCIENCE 20.4(2009):728-734. |
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