Arid
DOI10.1111/geb.12675
Shrub encroachment and vertebrate diversity: A global meta-analysis
Stanton, Richard A., Jr.1; Boone, Wesley W.2; Soto-Shoender, Jose2; Fletcher, Robert J., Jr.2; Blaum, Niels3; McCleery, Robert A.2
通讯作者Fletcher, Robert J., Jr.
来源期刊GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN1466-822X
EISSN1466-8238
出版年2018
卷号27期号:3页码:368-379
英文摘要

Aim: Across the planet, grass-dominated biomes are experiencing shrub encroachment driven by atmospheric CO2 enrichment and land-use change. By altering resource structure and availability, shrub encroachment may have important impacts on vertebrate communities. We sought to determine the magnitude and variability of these effects across climatic gradients, continents, and taxa, and to learn whether shrub thinning restores the structure of vertebrate communities.


Location: Worldwide.


Time period: Contemporary.


Major taxa studied: Terrestrial vertebrates.


Methods: We estimated relationships between percentage shrub cover and the structure of terrestrial vertebrate communities (species richness, Shannon diversity and community abundance) in experimentally thinned and unmanipulated shrub-encroached grass-dominated biomes using systematic review and meta-analyses of 43 studies published from 1978 to 2016. We modelled the effects of continent, biome, mean annual precipitation, net primary productivity and the normalized difference vegetation index (NDVI) on the relationship between shrub cover and vertebrate community structure.


Results: Species richness, Shannon diversity and total abundance had no consistent relationship with shrub encroachment and experimental thinning did not reverse encroachment effects on vertebrate communities. However, some effects of shrub encroachment on vertebrate communities differed with net primary productivity, amongst vertebrate groups, and across continents. Encroachment had negative effects on vertebrate diversity at low net primary productivity. Mammalian and herpetofaunal diversity decreased with shrub encroachment. Shrub encroachment also had negative effects on species richness and total abundance in Africa but positive effects in North America.


Main conclusions: Biodiversity conservation and mitigation efforts responding to shrub encroachment should focus on low-productivity locations, on mammals and herpetofauna, and in Africa. However, targeted research in neglected regions such as central Asia and India will be needed to fill important gaps in our knowledge of shrub encroachment effects on vertebrates. Additionally, our findings provide an impetus for determining the mechanisms associated with changes in vertebrate diversity and abundance in shrub-encroached grass-dominated biomes.


英文关键词biodiversity global change grasslands grazing pastoral abandonment savannas shrub encroachment shrub thinning species richness woody encroachment
类型Article
语种英语
国家USA ; Germany
收录类别SCI-E
WOS记录号WOS:000425083200009
WOS关键词KALAHARI SAVANNA RANGELANDS ; NORTHERN CHIHUAHUAN DESERT ; SOUTH-AFRICAN SAVANNA ; LAND-USE ; SPECIES RICHNESS ; COMMUNITY COMPOSITION ; VEGETATION STRUCTURE ; AUSTRALIAN SAVANNA ; HABITAT STRUCTURE ; BIRD COMMUNITY
WOS类目Ecology ; Geography, Physical
WOS研究方向Environmental Sciences & Ecology ; Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209757
作者单位1.Univ Florida, Sch Nat Resources & Environm, Intersdisciplinary Ecol Program, Gainesville, FL USA;
2.Univ Florida, Dept Wildlife Ecol & Conservat, 110 Newins Ziegler Hall, Gainesville, FL 32611 USA;
3.Univ Potsdam, Plant Ecol & Nat Conservat, Potsdam, Germany
推荐引用方式
GB/T 7714
Stanton, Richard A., Jr.,Boone, Wesley W.,Soto-Shoender, Jose,et al. Shrub encroachment and vertebrate diversity: A global meta-analysis[J],2018,27(3):368-379.
APA Stanton, Richard A., Jr.,Boone, Wesley W.,Soto-Shoender, Jose,Fletcher, Robert J., Jr.,Blaum, Niels,&McCleery, Robert A..(2018).Shrub encroachment and vertebrate diversity: A global meta-analysis.GLOBAL ECOLOGY AND BIOGEOGRAPHY,27(3),368-379.
MLA Stanton, Richard A., Jr.,et al."Shrub encroachment and vertebrate diversity: A global meta-analysis".GLOBAL ECOLOGY AND BIOGEOGRAPHY 27.3(2018):368-379.
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