CADIC   02618
CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Biodiversity conservation maps using environmental niche factor analysis in Nothofagus forests of Tierra del Fuego (Argentina)
Autor/es:
MARTÍNEZ PASTUR, GUILLERMO; LENCINAS, MARIA VANESSA; SOLER ESTEBAN, ROSINA MATILDE; KREPS, GASTÓN; SCHINDLER, STEFAN; PERI, PABLO LUIS
Lugar:
Concepción
Reunión:
Congreso; IUFRO Landscape Ecology Conference; 2012
Resumen:
Biodiversity conservation strategies are missing in traditional agriculture and forest management schemes in Argentina. For this reason, a national legislation (26331/07) promotes forest conservation, but its implementation avoids biodiversity values regarding the protection to marginal or upper catchment forests. In this study, we propose the use of biodiversity conservation maps using environmental niche factor analysis of understory plants in Nothofagus forests of Tierra del Fuego (Argentina) to promote better conservation strategies at regional level. We used surveys of vascular plants based on fieldwork (2000-2012) of 535 sampling plots, and an index based on its cover and occurrence in N. pumilio and N. antarctica forests were obtained. Using environmental niche factor analysis (software Biomapper 4.0), we produced a series of spatially explicit habitat suitability models for 28 vascular plants based on ten climatic and topographical maps. We choose these maps among 29 available maps based on a correlation matrix. Further, we produced maps (software Arcview 3.0) for each forest type based on the 20 most important vascular plant species. Maps showed different qualities along the Tierra del Fuego, e.g. N. pumilio forests presented higher values in the central-northeast areas, while N. antarctica presented higher values in the west, south and east areas. Potential conflicts with past and present timber and cattle production were discussed. Habitat suitability models for selected plant species were found very effective to develop a decision support system to improve the conservation strategies at different landscape levels (e.g. natural reserves at regional level and local reserves during forest management planning).