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Anales del Instituto de la Patagonia

versión On-line ISSN 0718-686X

Resumen

REPETTO-GIAVELLI, Fiorella  y  TENEB B, Ernesto. Analysis of natural regeneration of vegetation on road slopes of Ruta Y-85, Karukinka Park, Tierra del Fuego, Chile. Anales Instituto Patagonia (Chile) [online]. 2012, vol.40, n.2, pp.55-65. ISSN 0718-686X.  http://dx.doi.org/10.4067/S0718-686X2012000200005.

In this study we analyzed the pattern of vegetal succession of 38 road slopes formed by the construction of the Route Y-85, which connects Estancia Vicuña with Yendegaia (54° 20 ‘S, 68° 45’ W) in Chilean Tierra del Fuego. Our results indicate that both coverage and species richness show significant differences between the degraded road slopes and the reference sites in the four studied ecosystems. Most of the species that established themselves on degraded road slopes came from the reference ecosystems, the most abundant species were Acaena magellanica, Deschampsia fexuosa and Nothofagus pumilio. The road slopes with greater vegetation cover of species were found in the forest ecosystem (less than 25%), followed by ecotone ecosystem. These results suggest that the natural restoration of road slopes in southern tierra del Fuego is an extremely slow process, making it necessary to start an "active" restoration process.

Palabras clave : Road slope; Passive restoration; Succession; Karukinka Park; Tierra del Fuego; Patagonia.

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