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Anthropogenically physically changed habitats enable an easier propagation of invasive bivalve in neotropical headwater streams

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Abstract

Corbicula fluminea is one of the most successful invasive species in neotropical freshwater ecosystems. As alien species’ distribution in invaded regions is often facilitated by the presence of anthropogenic altered ecosystems, such as artificial channels and reservoirs. The present study is part of a larger joint scientific assessment of the ecological effects of a run-of-river dam in the Pandeiros River Basin, Brazil, aiming at supporting decision making regarding its possible decommissioning. Our focus was to determine which in-stream physical habitat metrics are most important for the distribution of C. fluminea in Pandeiros river basin, a Neotropical dammed Savanna-river basin. We found that its occurrence was linked positively with sheltered margins and pipes in the riparian zone, and negatively with the distance from the Pandeiros River dam. These results show that C. fluminea distribution is closely linked to anthropogenic alterations in the physical habitat and, due to the dam influence in enhancing this invasive species distribution, we could recommend the decommissioning of the Pandeiros River dam, built in 1957, but whose economic activities, including electrical power generation, have been totally deactivated since 2007.

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All data generated or analyzed during this study are included in this published article (and its supplementary information files).

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Acknowledgements

We are grateful for financial support from P&D Aneel-Cemig GT-599 and GT-611, the Fundação de Amparo à Pesquisa de Minas Gerais (FAPEMIG) through the APQ-01961-15 project and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)—Finance Code 001. MSL received a postdoctoral scholarship from P&D Aneel-Cemig GT-599. MC was awarded CNPq research productivity grant 304060/2020-8 and FAPEMIG research grant PPM 00104-18. DRM was awarded CNPq research productivity grant 309763/2020-7. Carlos B. M. Alves provided logistical support. Isabela Martins provided support with field sampling and design. JCM was supported by the Portuguese FCT through the project UIDB/04292/2020–MARE-Marine and Environmental Sciences Centre. Colleagues from the Universidade Federal de Minas Gerais (UFMG) and Universidade Federal de Lavras (UFLA) helped with field sampling. Several colleagues from the Laboratório de Ecologia de Bentos ICB/UFMG helped with sample processing. This project was authorized by the Instituto Estadual de Florestas (IEF—057/2016) and Sistema de Autorização e Informação em Biodiversidade (SISBIO—10365-2).

Funding

This work was supported by Aneel-Cemig (P&D GT-599 and GT-611), Fundação de Amparo à Pesquisa de Minas Gerais (FAPEMIG; APQ-01961-15) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES; Finance Code 001). Author MSL received a postdoctoral scholarship from P&D Aneel-Cemig GT-599. Author DRM was awarded CNPq research productivity grant 309763/2020-7. Author JCM was supported by the Portuguese FCT through the project UIDB/04292/2020–MARE-Marine and Environmental Sciences Centre. Author MC was awarded CNPq research productivity grant 304060/2020-8 and FAPEMIG research grant PPM 00104-18.

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All authors contributed to the study conception and design. Data collection and analysis were performed by Marden Seabra Linares and Diego Rodriges Macedo. The first draft of the manuscript was written by Marden Seabra Linares and all authors commented and contributed on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Marden Seabra Linares.

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Linares, M.S., Macedo, D.R., Marques, J.C. et al. Anthropogenically physically changed habitats enable an easier propagation of invasive bivalve in neotropical headwater streams. Biol Invasions 24, 3855–3863 (2022). https://doi.org/10.1007/s10530-022-02886-4

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