Environmental issues

Pests and weeds

Determining the environmental assets at risk from lantana invasion

Prior to the development of the Plan to Protect Environmental Assets from Lantana, the native species and ecological communities at risk from lantana invasion were not known on a national scale. In order to abate the threat of lantana invasion to native biodiversity, the specific biodiversity at risk needed to be identified. Assessing the impact of weeds is notoriously difficult as there are few scientific studies which determine species at risk, given the lengthy time periods they take to complete, and the diversity and number of species at risk can be large.

The weed impact to native species (Asp13Downey.pdf, 85KB) (WINS) assessment process was used to assess the threat of lantana to biodiversity. This process enables the impacts and threats of weeds on biodiversity to be determined quickly, across large areas and across a range of different types of species and ecological communities.

The WINS process uses the following four steps:

  1. undertake a review of the existing literature of the invasive plant in question and known species at risk,
  2. collate and assess the knowledge held by land managers and botanists with specific knowledge of and involvement in the management of weeds or the native species within infested sites. This was achieved through 20 targeted workshops held throughout the distribution of lantana in Qld and NSW,
  3. rigorous examination and evaluation of an interim list that is derived from the workshops of species identified as being potentially at risk, and
  4. ranking a revised list to determine which native species and communities required urgent protection from lantana.

Page last updated: 26 February 2011