Article

Soil and climate properties, plant eommunities and population strueture were studied at the two exclusive loeations of the endemie Erodium paularense. Il was eoncluded that the affinity for rare dolomite and andesite outerops in silieeous landseape, the striet water requirements during the reproduetive period and seedling establishment, and the need for shallow soils affeeted by freezing-thawing climatie perturbations make this speeies highly vulnerable to ehanging elimatie eonditions.