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Soil Erosion Induced by the Introduction of New Pasture Species in a Faxinal Farm of Southern Brazil

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Soil Erosion Induced by the Introduction of New Pasture Species in a Faxinal Farm of Southern Brazil

dc.contributor.author	Antoneli, V.
dc.contributor.author	Rebinski, E. A.
dc.contributor.author	Bednarz, J. A.
dc.contributor.author	Rodrigo-Comino, J.
dc.contributor.author	Keesstra, S. D.
dc.contributor.author	Cerdà Bolinches, Artemi
dc.contributor.author	Pulido Fernández, M.
dc.date.accessioned	2020-02-04T09:10:27Z
dc.date.available	2020-02-04T09:10:27Z
dc.date.issued	2018
dc.identifier.citation	Antoneli, V. Rebinski, E. A. Bednarz, J. A. Rodrigo-Comino, J. Keesstra, S. D. Cerdà Bolinches, Artemi Pulido Fernández, M. 2018 Soil Erosion Induced by the Introduction of New Pasture Species in a Faxinal Farm of Southern Brazil Geosciences (Switzerland) 166 8 1 12
dc.identifier.uri	https://hdl.handle.net/10550/72844
dc.description.abstract	The faxinal management system is an endangered agro-silvopastoral system which forms part of the local traditional management in the Paraná federal state (Brazil). Significant changes in land management since the 1970s caused farmers to look for alternatives to increase the productivity of their farms. The introduction of new pasture species is causing land degradation problems, of which soil erosion is the most important challenge. Therefore, in this study, we assessed the environmental consequences of introducing exotic pasture species, such as Brachiaria decumbens. To achieve this goal, ten erosion plots were installed with exotic and native pastures (Paspalum notatum Flüggé) to quantify soil and water losses in paired plots. Total rainfall per event, soil properties (soil cover, texture, organic matter, bulk density, porosity, and soil penetration resistance), and pasture production were also estimated. Our results showed a decrease in organic matter and porosity and an increase of the bulk density in the exotic pasture plots. Soil erosion monitoring showed higher soil losses for the exotic cultivated plots (359.8 g m−2 or 3.6 mg ha−1) than for the native plots (90.7 g m−2 or 0.91 mg ha−1). The highest percentage of bare soil surfaces and compaction coincided with the highest soil erosion rates measured in the exotic pastures. However, the mean fodder production in the exotic plots was almost five times higher (987 kg DM ha−1) than in the native ones (204 kg DM ha−1). These findings confirm that farmers have an internal conflict. They want to optimize the production of fodder, but this leads to high soil erosion rates and reduces soil fertility in the medium- and long-term. The traditional, less productive pastoral system is more sustainable from an environmental and cultural point of view. However, this system may not be sustainable from an economic point of view.
dc.language.iso	eng
dc.relation.ispartof	Geosciences (Switzerland), 2018, vol. 166, num. 8, p. 1-12
dc.subject	Sòls Erosió
dc.title	Soil Erosion Induced by the Introduction of New Pasture Species in a Faxinal Farm of Southern Brazil
dc.type	journal article	es_ES
dc.date.updated	2020-02-04T09:10:27Z
dc.identifier.doi	10.3390/geosciences8050166
dc.identifier.idgrec	136050
dc.rights.accessRights	open access	es_ES