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Exotic pastureland is better than Eucalyptus monoculture: β-diversity responses of flower chafer beetles to Brazilian Atlantic Forest conversion

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International Journal of Tropical Insect Science Aims and scope Submit manuscript

Abstract

Human activities, such as conversion and degradation of habitats, are modifying the natural ecosystems, causing biodiversity declines globally. However, the responses of many understudied biological groups are less clear. Here, we explore how spatial components of β-diversity (incidence- and abundance-based) of flower chafer beetles are influenced by land use changes. We sampled the insects using aerial fruit-baited traps weekly from September to December 2012, in five sites of Brazilian Atlantic Forest, Eucalyptus plantations and pasturelands (Urochloa spp.). We find that compositional changes of beetle assemblages are completely represented by nestedness patterns, either among or within habitats. When accounting for abundance, except for Eucalyptus sites, there are a similar contribution of change and loss of individuals among and within habitats. Within Eucalyptus sites, assemblages are completely nested in terms of species and individuals. Eucalyptus sites are a poor-homogenized subset of some disturbance-tolerant flower chafer beetle species also found in forest and open habitats (such as pastures). When resources are available, these beetles can inhabit both forest and open habitats and appear to be ‘guests’ in Eucalyptus sites, using them only when moving through space. Finally, conversion of Atlantic Forest sites into Eucalyptus causes poor-homogenized assemblages of flower chafer beetles.

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Acknowledgements

We thank José Henrique Schoereder for providing space and equipment of the Laboratory of Community Ecology (Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil) for screening and identification of the flower chafer beetles, and Mrs. Eduardo Morici Ladeira and Marcos Francisco Simões de Almeida for allowing the execution of this study on their properties. CMAC received a PhD scholarschip from the Conselho Nacional de Desenvolvimento Científico Tecnológico (CNPq, Brazil) (140741/2015-1) from the Entomology Graduate Program, Universidade Federal de Lavras, and PhD sandwich scholarship from the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil) (88881.134292/2016-01). PGdS thanks Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for post-doctoral grant (Process 88882.316025/2019-01, Code 001).

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CMAC, PGdS, AP and HLA contributed equally to the manuscript.

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Correspondence to César M. A. Correa.

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The experimentation was no invasive and complied with Brazilian law. At the end of the experiment, the specimens were deposited in the “Entomological Collection at the IFMT” following standard procedures.

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CMAC, PGdS, AP and HLA declare that they have no conflict of interest.

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Correa, C.M.A., da Silva, P.G., Puker, A. et al. Exotic pastureland is better than Eucalyptus monoculture: β-diversity responses of flower chafer beetles to Brazilian Atlantic Forest conversion. Int J Trop Insect Sci 41, 137–144 (2021). https://doi.org/10.1007/s42690-020-00186-9

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  • DOI: https://doi.org/10.1007/s42690-020-00186-9

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