INVESTIGADORES
GHERMANDI Luciana
artículos
Título:
Spatial dynamics of Fabiana imbricata shrublands in northwestern Patagonia in relation to natural fires.
Autor/es:
ODDI F., N. DUDINSZKY & L. GHERMANDI
Revista:
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
Editorial:
Copernicus Publications
Referencias:
Año: 2010 vol. 10 p. 957 - 966
ISSN:
1684-9981
Resumen:
Abstract. Fire is a critical disturbance in the structuring and
functioning of most Mediterranean ecosystems. In northwestern
Patagonia, vegetation patterns are strongly influenced
by fire and environmental heterogeneity. Dendroecology,
together with satellite imagery and GIS, have been
demonstrated to be useful tools in studies that relate to fire
effects with patches, patterns and species dynamics at landscape
scale. Such studies can be approached from landscape
ecology, which has evolved in the last years supported by the
development of remote sensing and GIS technologies. This
study evaluates the spatial dynamic of F. imbricata in response
to fire using remote sensing, GIS and dendrochronology
techniques, at landscape scale. Two sites were evaluated
and one of them was affected by fire in the year 1999. The
digital processing images (using the NBR spectral index) and
the dendroecological analysis verified this. A fire, occurring
in 1978, was also detected by the analysis of F. imbricataFire is a critical disturbance in the structuring and
functioning of most Mediterranean ecosystems. In northwestern
Patagonia, vegetation patterns are strongly influenced
by fire and environmental heterogeneity. Dendroecology,
together with satellite imagery and GIS, have been
demonstrated to be useful tools in studies that relate to fire
effects with patches, patterns and species dynamics at landscape
scale. Such studies can be approached from landscape
ecology, which has evolved in the last years supported by the
development of remote sensing and GIS technologies. This
study evaluates the spatial dynamic of F. imbricata in response
to fire using remote sensing, GIS and dendrochronology
techniques, at landscape scale. Two sites were evaluated
and one of them was affected by fire in the year 1999. The
digital processing images (using the NBR spectral index) and
the dendroecological analysis verified this. A fire, occurring
in 1978, was also detected by the analysis of F. imbricataF. imbricata in response
to fire using remote sensing, GIS and dendrochronology
techniques, at landscape scale. Two sites were evaluated
and one of them was affected by fire in the year 1999. The
digital processing images (using the NBR spectral index) and
the dendroecological analysis verified this. A fire, occurring
in 1978, was also detected by the analysis of F. imbricataF. imbricata
growth rings. The relation between F. imbricata shrubland
dynamics and spatial configuration with fire, land topography
and hydrography was established in the study area.F. imbricata shrubland
dynamics and spatial configuration with fire, land topography
and hydrography was established in the study area.