Resumen

DIEZ, Paula; VAZQUEZ, Mirian  y  GRIMA, Daniel. Environmental degradation in Coy Aike endorheic basin, Austral Patagonia-Argentina, and its economic implication in farms. Perspectiva Geográfica [online]. 2013, vol.18, n.2, pp.195-216.  Epub 08-Jun-2024. ISSN 0123-3769.

This work determines the degradation processes of the ecological unit of Mata Negra scrub and decreasing load produced by transformation of the landscape in Coy Aike endorheic basin. Visual interpretation using several satellite images, characterizing four sectors in the basin: Lagoon of Mata Negra, Sub scrub vegetation and without vegetation, the last mentioned with the highest erosion evidence. The dynamics of the lagoon showed a spatial and temporal variation directly related to weather conditions, but the lagoon does not contain variability associated with erosion. The last ones affect natural vegetation decreasing availability of land suitable for grazing and losses in the commercial value of the wool for textile. The estimates of economic costs that cause soil erosion was determined taking into account the average per ovine hectare receptivity to the ecological area. In establishing the 211 hectares of Coy Aike unproductive lands must represent an economic loss to the producer of USD 1,925.00 per year, however the economic gravity will coincide with the amount of basin and with the erosive potential that exist in agricultural establishments.

Palabras clave : endorheic basin-degradation-landscape-Patagonia Argentina.

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