Habitat relationships for two poorly known mammal species Pseudomys calabyi and Sminlhopsis sp. from the wet-dry tropics of the Northern Territory.

Abstract

Most records of Sminthopsis sp. and all records of Pseudomys calabyi are from gravelly hills with Eucalyplus dichromophloia and E. tintinnans woodland in Stage III of Kakadu National Park, Northern Territory. This habitat is distinct from that used by other small dasyurids and pseudomyine rodents of this region. For P. calabyi it may offer the attraction of prolonged availability of fallen grass seeds. Both taxa have vicariants in the Kimberley, a pattern resembling that for many vertebrate species pairs of the more isolated sandstone massifs of the Kimberley and Arnhem Land area.