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Diaspore Removal by Ants Does Not Reflect the Same Patterns of Ant Assemblages in Mining and Rehabilitation Areas

  • Ecology, Behavior and Bionomics
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Abstract

Mining is responsible for drastic ecosystem changes and rehabilitation is used to promote the return of functions after these impacts. In this scenario, we investigated the responses of ant assemblages and diaspore removal by ants to the transformations caused by mining and rehabilitation predicting that (a) the increase in plant density (a proxy for mining intensity) led to an increase in ant richness, percentage of diaspores removed, and changes in species composition that in turn are correlated with changes in environmental variables; (b) the increase in vegetation structure (a proxy for rehabilitation ages) led to an increase in ant richness, percentage of diaspores removed, and changes in species composition that in turn are correlated with changes in environmental variables. Additionally, we also verified which functional groups were primarily responsible for diaspore removal. We sampled arboreal and epigeic ants, diaspore removal by ants, and environmental variables. We found that ant richness and diaspore removal in mining intensity gradient are positively correlated to plant density. Although vegetation structure is positively correlated with ant richness, we found no changes in diaspore removal in rehabilitation gradient. Epigeic omnivore and epigeic generalist predator ants were the most responsible for diaspore removal. Then, we observed that mining decreases ant richness, altering ant assemblages and their functions, and rehabilitation with exotic plants is ineffective to promote the colonization by the main diaspore-removing ants.

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Acknowledgements

We are thankful to Vale S.A. for allowing us to sample ants in its mining and rehabilitation sites, and to R. Braga, C. Mendanha, and A. Matos for helping us at the mining sites. We thank E. Fontes, H. Vasconcelos, and two anonymous referees by the valuable comments in the manuscript. We thank “Laboratório de Química, Bioquímica e Análises de Alimentos, DEA, UFLA” for helping us with the production of artificial fruits. We are grateful to our colleagues E.A. Silva, T. Moretti, D. Braga, and F. Tanure for help during this work and to C. Bottcher, R. Campos, J. Louzada, and P. Pompeu, for the suggestions in previous versions of this paper. We also thank L. Prado and R. Feitosa (MZUSP) for verifying ant species identification.

Funding

This work resulted from the research project FAPEMIG-CRA-RDP-00123-10—“Biodiversidade e funções ecológicas de formigas — bioindicação de impactos ambientais e de recuperação de áreas degradadas.” The authors received grants from CAPES, CNPq, and FAPEMIG.

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Contributions

ACMQ, AMR, and CRR conceived and designed the research; all authors performed the field and lab work; ACMQ analyzed the data and wrote the original draft; all authors wrote and edited the manuscript. ACMQ received a postdoctoral fellowship from CEMIG - Companhia Energética de Minas Gerais S.A. (P&D 611).

Corresponding author

Correspondence to Antônio C. M. Queiroz.

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This data was collected under CRR’s permanent license for collection of zoological material (ICMBIO-MMA-Brasil).

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All authors cited in the title page meet the criteria for authorship. All authors certify that they have participated to assume public responsibility for the content in all stages of the work reported in the manuscript and detailed at Author Contribution.

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The authors declare no competing interests.

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Edited by Heraldo Vasconcelos

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Queiroz, A.C.M., Rabello, A.M., Lasmar, C.J. et al. Diaspore Removal by Ants Does Not Reflect the Same Patterns of Ant Assemblages in Mining and Rehabilitation Areas. Neotrop Entomol 50, 335–348 (2021). https://doi.org/10.1007/s13744-021-00861-7

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  • DOI: https://doi.org/10.1007/s13744-021-00861-7

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