Habitat and Microhabitat Distributions in Relation to Ecological Overlap in Two Species of Ranidella (Anura)

Abstract

The geographic distributions of two species of anuran amphibians, Ranidella signifera and R. parinsignifera, were examined. The physiognomies of more than 200 sites in south central Victoria were recorded. R. signifera is ubiquitous but R. parinsigngem is restricted to low-elevation sites (<380 m) that are not underlain by quaternary volcanic soils. There is no microhabitat differentiation at sites where both species occur. These results are discussed in relation to the overall ecological relationships of these species in this region of Australia.