(iv) Little data on habitat requirements of virtually all invertebrate species, most ephemeral plants and uncommon vertebrate and plant species

(ix) Poor understanding of the long term impact of mining below water tables, particularly with respect to leaving flooded voids subject to salination.

(v) No quantitative data on the affect of exotic predators, weed colonisation.

(vii) No quantitative data on the impact of exotic herbivores on aquatic systems, or other communities, especially effects on invertebrate and non-vascular plant communities.

(viii) No quantitative data impact of weed colonisation on riverine and other grassland and consequent effects on invertebrate and vertebrate communities.

(x) Poor understanding of sub-regional troglofaunas, particularly stygofaunas associated with palaeo-drainage calcretes

. There are no data to provide a regional context on life-history (including population-trend) of any species, even goats, foxes and rabbits.

(iii) Floristic data is sparse, quadrats positioned on widespread surface-types as well as some of the localised substrates of particular interest

Wetland survey has been minimal.

(vi) No quantitative data on the affect of mineral extraction, pastoralism on landscape processes.

(ii) No systematic fauna survey data except for Toolonga Nature Reserve in the north western periphery of the subregion (Burbidge et al., 1980) and the White Wells area in the southern periphery (Burbidge et al., 1989).

Reserves don?t have long-term survey data on species p/a even for vertebrates. Wetland survey has been minimal.

(i) No regolith mapping available. Regional ecosystem mapping has occurred at the broad scale; 1:1 000 000 for Beard's vegetation types and 1:500 000 for land systems by Department of Agriculture (Payne et al., 1998).