INVESTIGADORES
TABENI Maria Solana
artículos
Título:
Assessing mammal responses to perturbations in temperate aridlands of Argentina
Autor/es:
TABENI, S; OJEDA, R. A.
Revista:
JOURNAL OF ARID ENVIRONMENTS
Editorial:
Elsevier
Referencias:
Año: 2003 vol. 55 p. 715 - 726
ISSN:
0140-1963
Resumen:
Loss of species richness and reduced abundance have been the main
responses to perturbations of small- and medium-sized mammals in arid
and semi-arid areas. Nonetheless, some mammal species whose habitat
requirements are met in disturbed patches may benefit from structural
changes in the environment brought about by perturbations.
In
desert areas of Argentina different mammal responses are attributable
to both a lower complexity of disturbed patches and a decrease in
sheltered places. Therefore, species associated with high plant cover
either decrease in number or become locally extinct at sites affected
by fire or grazing, whereas species using open areas are favored by
these events.
The negative effects historically assigned to
different disturbances may be mitigated by adopting a hierarchical
approach that considers patch diversity in different successional
stages as well as the multiple opportunities of patch occupation by
mammal species.