Our complex is considered to be an important bio-geographic site because it is located at the western and eastern edges of two (2) major regions – the coastal Sydney Basin and the inland south western slopes. The area is also at the edge of two (2) large river catchments – being the Goulburn River flowing east and the Talbragar River flowing west. Because of the proximity of the eastern and western fall of the Great Dividing Range (the summit runs through the Bobadeen area), Ulan represents a good example of a broad wildlife corridor, where fauna can travel along the Talbragar and Goulburn Rivers to and from inland and coastal NSW. The biodiversity of fauna reflects these influences as well as the influences from the variety of habitats in the area.
Within our land holdings, there are several sites which are considered to have a significant conservation value. These sites include:
- The valley formed by the headwaters of Ulan Creek;
- A length of cliff-line within the Brokenback area;
- Rock shelters North east of "Walkerville" property;
- Cliff-lines along the northern side of Spring Gully Creek;
- Cliff-lines to the north of the main mine administration buildings; and
- A steep cliff line to the North of Woodbury, next to a tributary of Mona Creek.
Important Vegetation Communities found within our land holdings are:
Yellow Box Woodland
Alluvial, deep colluvial and granite derived soils in broad open valleys support Yellow Box Woodlands. The dominant tree species is the Yellow Box (E. melliodora) and Blakely's Red Gum (E. blakelyi). Associated tree species include the Rough Bark Apple (Angophora floribunda), Kurrajong (Brachychiton populneum) and Long-leaved Box (E. gonicalyx)
Western Scribbly Gum Woodland
Broad flats with sandy soils support a Woodland community dominated by Western Scribbly Gum (E. rossi). Associated tree species include Blakely's Red Gum (E. blakelyi) and Parramatta Red Gum (E. parramattensis).
Both the Yellow Box Woodland and Western Scribbly Gum Woodland are considered to have conservation importance, because of their limited distribution and the relatively high levels of clearing associated with the communities in the area. It is unlikely that either of these communities will be affected by our activities, as care will taken not to locate any future infrastructure inside the areas identified to contain these species.