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Understanding the effects of human disturbance on scorpion diversity in Brazilian tropical forests

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Abstract

The effects of land use conversion on the maintenance of biodiversity remains a major issue in conservation biology. With this as context, recent studies have successfully evaluated the potential of scorpions as bio-indicators of human disturbance. Here, we explored this assumption to identify the effects of landscape structure on scorpion assemblages distributed in two tropical environments in Brazil, with different levels of human disturbance. Scorpions were collected from 28 sampling localities across the Atlantic Forest (n = 12) and Caatinga dry forest (n = 16), resulting in 3,781 specimens from 13 species, 5 genera, and 2 families. We found that scorpion species composition and abundance were more sensitive to changes in landscape configuration than was species richness. Additionally, scorpion assemblage responses were quite different between the two environments. From this observation we highlighted three main findings: (i) the Atlantic Forest assemblage possesses an abundance-dependent response to landscape; (ii) variation in species composition of Atlantic Forest and Caatinga were affected by landscape diversity and presence of croplands, respectively; (iii) the Atlantic Forest is inhabited by assemblages that are more sensitive to landscape changes than that is Caatinga.

Implications for insect conservation

We argue that a site-dependent process may explain the effects of human activities on scorpion assemblages at local and regional scale. Moreover, we provide substantial information for decision-makers to support their conservation strategies for neglected ecosystems, such as those present in Caatinga and the Atlantic Forest.

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Acknowledgements

We are grateful to Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco for postdoctoral scholarship (BFP-0010-2.05/19) to AFAL. We are also grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior for granting a postdoctoral (PNPD PPG-Eco-INPA) to RPS. In addition, we thank Conselho Nacional de Desenvolvimento Científico e Tecnológico for a master scholarship to SIAF (CNPq 130756/2018-0).

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Correspondence to André F. A. Lira.

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The authors declare that they have no conflict of interest.

Research involving human and/or animal participants

This study does not contain any studies with human participants. All applicable international, national, and institutional guidelines for the care and use of animals were followed.

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Lira, A.F.A., Foerster, S.I.A., Salomão, R.P. et al. Understanding the effects of human disturbance on scorpion diversity in Brazilian tropical forests. J Insect Conserv 25, 147–158 (2021). https://doi.org/10.1007/s10841-020-00292-6

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  • DOI: https://doi.org/10.1007/s10841-020-00292-6

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