The sand fauna of Lake Pedder: a unique example of colonization by the Phreatoicidea (Crustacea: Isopoda).

Abstract

The larger invertebrates were quantitatively removed from a quadrat of sand 0.5 m² in area on the shore of Lake Pedder (Tasmania) shortly before it was artificially flooded. The numerically dominant animal was Colubotelson (Phreatoicidea). Phreatoicids have not been recorded from freshwater psammon elsewhere. Five species of nematode are recorded from Australia for the first time. Two of these are presently known only from the southern hemisphere.