DOI: 10.1007/s10531-019-01888-4
论文题名: Assessing the effects of land use on biodiversity in the world’s drylands and Mediterranean environments
作者: García-Vega D. ; Newbold T.
刊名: Biodiversity and Conservation
ISSN: 9603115
出版年: 2020
卷: 29, 期: 2 语种: 英语
英文关键词: Biodiversity
; Drylands
; Land use
; Mediterranean
; Synthetic model
Scopus关键词: biome
; community composition
; conservation planning
; database
; dryland farming
; ecosystem function
; endangered species
; endemism
; Mediterranean environment
; species richness
英文摘要: Biodiversity models make an important contribution to our understanding of global biodiversity changes. The effects of different land uses vary across ecosystem types, yet most broad-scale models have failed to account for this variation. The effects of land use may be different in systems characterized by low water availability because of the unusual conditions within these systems. Drylands are expanding, currently occupying over 40% of the terrestrial land, while Mediterranean systems are highly endangered biodiversity hotspots. However, the impact of land use on biodiversity in these biomes is yet to be assessed. Using a database of local biodiversity surveys, we assess the effects of land use on biodiversity in the world’s drylands and Mediterranean ecosystems. We compare the average species richness, total abundance, species diversity, ecological dominance, endemism rates, and compositional turnover across different land uses. In drylands, there was a strong turnover in species composition in disturbed land uses compared with undisturbed natural habitat (primary vegetation), but other measures of biodiversity did not respond significantly. However, it is important to note that the sample size for drylands was very low, a gap which should be filled promptly. Mediterranean environments showed a very high sensitivity of biodiversity to land uses. In this biome, even habitat recovering after past disturbance (secondary vegetation) had substantially reduced biodiversity and altered community composition compared with primary vegetation. In an effort to maintain original biodiversity and the ecosystem functions it supports within Mediterranean biomes, conservation measures should therefore prioritize the preservation of remaining primary vegetation. © 2019, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159864
Appears in Collections: 气候变化与战略
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作者单位: Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, Gower Street, London, WC1E 6BT, United Kingdom
Recommended Citation:
García-Vega D.,Newbold T.. Assessing the effects of land use on biodiversity in the world’s drylands and Mediterranean environments[J]. Biodiversity and Conservation,2020-01-01,29(2)