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Ecología austral

versión On-line ISSN 1667-782X


PEROSA, Mariana et al. Distribución potencial de los bosques de Prosopis fexuosa en la Provincia Biogeográfica del Monte (Argentina). Ecol. austral [online]. 2014, vol.24, n.2, pp.238-248. ISSN 1667-782X.

Potential distribution of Prosopis fexuosa woodland in the Monte desert (Argentina): In arid areas of Argentina, Prosopis flexuosa woodlands are of foremost importance since they are thought to protect the soil against erosion in a region with a high risk of desertification, and because they offer several resources to local inhabitants, such as firewood, forage for cattle, and food products derived from its fruit. These woodlands have been strongly impacted by human activities, mainly during the first half of the XIXth century. Knowledge about their potential distribution, as well as a comparison between potential and actual distributions, would allow priority areas for conservation and possible areas for reforestation to be defined. The aim of this work was to generate a model of the potential distribution of P. flexuosa woodland within a region of arid shrublands in central Argentina, known as the Monte desert. Maxent software was used to generate the distribution models. The software uses as input a set of georeferenced data of the presence of P. flexuosa woodland, and of those relevant for the distribution of species (e.g., climatic, altitude, slope, aspect, soil and water table depth). The resulting potential distribution model generally coincided with the main valleys, depressions and plains of the region, where P. flexuosa woodland are known to exist currently. However, area and limits of observed and estimated woodland patches differ in some cases, which could be related with anthropogenic disturbances in some of the patches or with variables not included in the model, such as the probability of wildfires.

Palabras clave : Models; Biogeography; Algarrobal; Arid lands.

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