An open cut mine is planned at the Hinge location by Karara Mining Ltd. Astron was contracted to undertake a Level 2 vegetation and flora survey which would encompass a variety of different mapping products created by Astron’s Geospatial team. Numerous field staff using a range of different Global Positioning System (GPS) units were able to gather a significant amount of spatial data on priority flora and invasive species.
One of the challenges that faced the Geospatial team was the volume of spatial data that came in from the field. Over a dozen GPS units gathered floristic data such as location, species and density. All incoming data had to be quality assured and fit for use in the mapping component of the project. From this extensive data, maps such as: vegetation maps; priority flora maps; invasive species maps; and tracklog maps were able to be compiled and drafted.
Systematic coverage of the survey area was completed using the GIS mapping component. Actual GPS tracklogs combined with inferred tracks helped the field teams to organise the targeted effort for particular days, as well as calculate the expected distance to cover.
Combining the skills of the Biodiversity and Geospatial teams, population density for selected priority flora was able to be calculated and drafted to maps. These maps show how the species vary in density across the survey area and their locality in relation to other priority species. Using historical satellite imagery, incidents of fires in the area were able to be mapped as to show the influence the fire events have on the areas floristic communities.