Gold
production in Victoria is estimated to significantly increase
over the next few years due to higher outputs from current
mining activity as well as the opening of new mines. The
major impact of these mining operations on the disturbed
landscape is the creation of repositories for the fine
tailings once the gold has been extracted. The tailings
storage facilities cover approximately 100 hectares which
will require strategies to create landforms which support
self perpetuating ecosystems.
The Applied Ecology Research Group and Environmental Chemistry
in partnership with Stawell Gold Mine are involved in
research to understand the various aspects of plant establishment
on these hostile substrates and subsequently provide 'green'
prescriptive solutions as part of the major aims to render
these structures safe and stable.
We are investigating the feasibility of utilizing native
grass species as a major component for the phytostabilization
of tailings impoundment surfaces. This work will be in
collaboration with a native grass seed producing company.
The focus of the study will be the tolerance of various
grass species to various stressors e.g. exposure to arsenic,
salinity from the oxidation of the mine tailings, as well
as to other environmental conditions such as drought and
waterlogging which affect the resiliency of developing
vegetation communities on these sites.