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How pervasive is biotic homogenization in human-modified tropical forest landscapes?
Stockholm University, Stockholm Environment Institute. International Institute for Sustainability, Rio de Janeiro, Brasil.
Number of Authors: 15
2015 (English)In: Ecology Letters, ISSN 1461-023X, E-ISSN 1461-0248, Vol. 18, no 10, 1108-1118 p.Article in journal (Refereed) Published
Abstract [en]

Land-cover change and ecosystem degradation may lead to biotic homogenization, yet our understanding of this phenomenon over large spatial scales and different biotic groups remains weak. We used a multi-taxa dataset from 335 sites and 36 heterogeneous landscapes in the Brazilian Amazon to examine the potential for landscape-scale processes to modulate the cumulative effects of local disturbances. Biotic homogenization was high in production areas but much less in disturbed and regenerating forests, where high levels of among-site and among-landscape β-diversity appeared to attenuate species loss at larger scales. We found consistently high levels of β-diversity among landscapes for all land cover classes, providing support for landscape-scale divergence in species composition. Our findings support concerns that β-diversity has been underestimated as a driver of biodiversity change and underscore the importance of maintaining a distributed network of reserves, including remaining areas of undisturbed primary forest, but also disturbed and regenerating forests, to conserve regional biota

Place, publisher, year, edition, pages
2015. Vol. 18, no 10, 1108-1118 p.
Keyword [en]
Amazon forest, diversity partitioning, land-cover change, landscape divergence, multi-taxa, nestedness, turnover
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-124862DOI: 10.1111/ele.12494ISI: 000361009000014OAI: oai:DiVA.org:su-124862DiVA: diva2:891009
Available from: 2016-01-05 Created: 2016-01-05 Last updated: 2016-01-18Bibliographically approved

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