An area of land which share similar environmental, physical and climatic conditions and contain characteristic ecosystems of plants and animals. Tasmania is divided into nine land bioregions and nine coastal and marine bioregions. Bioregions represent broad landscape patterns that are the result of the interplay between a range of factors including geology, climate and biota. Subregions represent more homogenous geomorphic units at a finer scale that often closely relate to historical and current land-use and therefore, reflect differing pressures on the landscape (Gouldthorpe & Gilfedder 2002).