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Impacts of domestic cattle on forest and woody ecosystems in southern South America

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Abstract

There is a long lasting debate on the effects of domestic cattle grazing on natural ecosystems worldwide. Cattle are generally assumed to have negative effects on forest conservation; however, several studies also report positive and neutral effects. We aimed to investigate the available evidence for positive, negative and neutral effects of cattle grazing on forest and woody ecosystems of southern South America. We conducted a peer-review literature search using the ISI Web of Knowledge and Scopus databases to identify studies dealing with cattle impacts for nature conservation. We compiled a database of 211 cases from 126 original publications. A reduced number of forest ecosystems (Patagonian forest, Chaco and Monte) concentrated ~ 85% of the reported study cases. The hierarchical cluster analysis to group cases based on cattle effects, ecological variables and ecosystems reported that negative effects (~ 66% of cases) were mostly informed for vegetation variables and mainly occur in Patagonian forest and Chaco; positive effects (~ 16%) were mostly informed for Monte (no particular variable associated), while neutral effects (~ 18%) were mostly informed for fauna-related variables and Uruguayan savanna. Our study suggests that grazing effects by cattle on southern South America forests are not homogeneous and depend on the particular forest ecosystem considered as well as on the forest attribute measured. Different cattle effects found can be partially explained by differences in grazing history and different ecosystems productivity. It is vital to improve our understanding of cattle–forest interactions to guide synergies between sustainable management and forest conservation.

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Acknowledgments

We thank two anonymous reviewers for their comments that significantly improved the manuscript. Dr. C. Tellaeche helped with the map and Dr. S. R. Moyano assisted with the cluster analysis figure. This study was supported by a doctoral fellowship from Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina (CONICET) to F.M.; a research grant from the Unit for Rural Change, Ministry of Agroindustry (UCAR-PIA 14037-2015) to L.R.M. and F.M.; and a Rufford Small Grant from the Rufford Foundation to F.M.

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Correspondence to F. Mazzini.

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Communicated by Martin Nunez.

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Mazzini, F., Relva, M.A. & Malizia, L.R. Impacts of domestic cattle on forest and woody ecosystems in southern South America. Plant Ecol 219, 913–925 (2018). https://doi.org/10.1007/s11258-018-0846-y

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  • DOI: https://doi.org/10.1007/s11258-018-0846-y

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