How pervasive is biotic homogenization in human-modified tropical forest landscapes?

R de Castro Solar, Jos Barlow, Joice Ferreira, Erika Berenguer, Alexander Lees, Julio Louzada, M Maues, Nargila Moura, Victor Oliveira, Julio Chaul, J Schoereder, Ima Vieira, Ralph MAC NALLY, Toby Gardner

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    132 Citations (Scopus)


    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 ß-diversity appeared to attenuate species loss at larger scales. We found consistently high levels of ß-diversity among landscapes for all land cover classes, providing support for landscape-scale divergence in species composition. Our findings support concerns that ß-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.
    Original languageEnglish
    Pages (from-to)1108-1118
    Number of pages11
    JournalEcology Letters
    Issue number10
    Publication statusPublished - 1 Oct 2015

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    de Castro Solar, R., Barlow, J., Ferreira, J., Berenguer, E., Lees, A., Louzada, J., Maues, M., Moura, N., Oliveira, V., Chaul, J., Schoereder, J., Vieira, I., MAC NALLY, R., & Gardner, T. (2015). How pervasive is biotic homogenization in human-modified tropical forest landscapes? Ecology Letters, 18(10), 1108-1118.