IADIZA   20886
INSTITUTO ARGENTINO DE INVESTIGACIONES DE LAS ZONAS ARIDAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Biodiversity responses as ecological indicators of landscape degradation processes in the Argentinean Monte Desert
Autor/es:
TABENI S.; OJEDA, R. A
Lugar:
Buenos Aires
Reunión:
Conferencia; International Scientific Conference and Consultation - UNCCD Conference of Parties COP9; 2009
Institución organizadora:
United Nations Convention to Combat Desertification (UNCCD), Committee on Science and Technology (CST), Dryland Science for Development Consortium (DSD)
Resumen:
The semi-arid regions of Argentina have been subjected to accelerated desertification because of numerous human activities such as grazing, deforestation or agriculture. These activities produce changes in the spatial pattern of the landscape by altering a variety of ecological processes due to loss of natural habitats and reduced native species diversity. The central Monte Desert has an inherent natural heterogeneity, increased further by the diverse pressures of land use, since the time of colonization, and by land recovery for conservation. These complex scenarios of habitats recovered and under degradation processes can be monitored to disentangle the transitions to different conditions. Using different scales of analysis and organisms as a model of ecological change, our research shows how the structure of this disturbed matrix may affect biodiversity, and how the feedback from the local extinction or formation of new assemblages may have implications for biotic integrity in this semiarid landsca