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Impacts of the implementation of silvopastoral systems on biodiversity of native plants in a traditional community in the Brazilian Savanna

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Abstract

Large-scale commercial cattle ranching is the main driver of deforestation in the world, with several negative environmental and social impacts. To meet the growing demand for animal products, silvopastoral systems (SPS) can be an alternative as they have greater biodiversity and offer more environmental services than conventional cattle ranching systems. This paper aims to describe the implementation of SPS by traditional farmers in a rural settlement in southeastern Brazil, and the impacts on biodiversity of native plants. SPS were implemented by farmers in three selected areas that were cleared with a tractor. The impacts on the community and populations of native plants were estimated through vegetation sampling before and after the implementation of the SPS. Direct observations and semi-structured interviews were conducted to describe the implementation of the system and to understand the criteria employed to spare species, to manage native plants and the advantages of these systems according to farmers’ perceptions. Before the implementation, 1038 trees from 50 species and 29 botanical families were surveyed in the three areas. The tractor cleared on average 72 % of the trees, decreasing the number of trees ha−1 from 692 to 180 and reducing tree richness in 43 %. On average, 89 % of the removed trees had diameter ranging from 5 to 10 cm, indicating farmers’ preference in sparing the thickest trees. Farmers also spare useful species that have socio-economic importance, such as timber, fruit trees, fodder and medicine. According to the farmers, the advantages of the SPS are the high concentration of useful species, the environmental services provided and the increase in livestock production. The system described has great potential to ensure food security, generating socio-economic benefits for farmers and contributing to biodiversity conservation.

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Acknowledgments

This research was supported by Funbio/TFCA, CNPq and CAPES grants and fellowships. Embrapa (Cenargen) provided technical and logistic support. Juarez P. Amaral, José M. Mendonça, Nilton F. Barbosa, João Benedito Pereira, Pedro Vasconcelos and Elisa Pereira helped with fieldwork. We acknowledge all farmers of the Americana Settlement, especially Maria Elei N. Souza, Aparecido A. Souza, João Altino Neto and Cristovino F. Neto. We appreciate the valuable contributions by Miguel Alexiades and the revision by Bruno Ubiali.

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Authors and Affiliations

  1. Departamento de Ecologia, Universidade de Brasília, Asa Norte, Brasília, DF, Brazil

    Isabela Lustz Portela Lima & Aelton Biasi Giroldo

  2. Laboratório de Ecologia e Conservação, Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Brasília, DF, Brazil

    Aldicir Scariot

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  1. Isabela Lustz Portela Lima
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Correspondence to Isabela Lustz Portela Lima.

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Lima, I.L.P., Scariot, A. & Giroldo, A.B. Impacts of the implementation of silvopastoral systems on biodiversity of native plants in a traditional community in the Brazilian Savanna. Agroforest Syst 91, 1069–1078 (2017). https://doi.org/10.1007/s10457-016-9981-4

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