Skip to content

Wherever and whenever possible we work to ensure we are protecting WA’s native flora and fauna across the SWIS.

From minimising the chance of spreading damaging diseases like dieback (see our WA-first internal Green Card certification program) to protecting existing wildlife or re-locating when essential, protecting WA's unique landscapes within and during the operation of the south- west electricity network is vitally important.

We are committed to protecting and enhancing the environment, heritage and social values across the SWIS and this includes undertaking rigorous environmental impact assessments.

One of the ways we are working to minimise our impact on the environment is through informing our assessments through biological surveying to identify flora and fauna values.

How flora and fauna are considered 

We proactively work across our operations to minimise any potential negative impacts on natural habitat, particularly that of threatened or endangered species. 

When a potential project is identified, Western Power’s Environmental, Safety and Planning Assessment Team undertake preliminary desktop assessments for any environment, heritage and planning values associated with the program of works. 

The early assessment assists the project team to narrow down options by identifying areas with high environmental values to enable design changes to avoid key locations and reduce environmental impact where possible. 

Once preliminary investigations are complete, the team engages environmental consultants to undertake flora, fauna and vegetation surveys.

Flora and fauna surveys

The preliminary investigations identify areas to survey that potentially contain significant flora and ecological communities and fauna habitat of significance. Flora and fauna surveying is the process of collecting data about the variety of naturally occurring native plant life and all living organisms, including diversity within species, between species, and of ecosystems.

They play an important role in identifying areas of high environmental values and rich biodiversity to provide and ensure guidance for environmental management planning and/or environmental impact assessments and approvals for significant development projects.

Usually zoologists or biologists, these experts collaborate with us to move through the area, looking for signs of significant fauna or flora species and threatened ecological communities, and map areas based on their ecological significance (e.g. whether they are cleared and degraded and likely to attract non-native or feral/pest species, or contain high-quality vegetation with suitable habitat for native species).

In Western Australia, in accordance with the States EPA technical guidance, there are three main types of survey, these are:

  1. Reconnaissance or Basic survey: Low intensity survey that gathers broad information about the area being surveyed. Often used to identify future detailed or targeted survey locations or when flora, vegetation and fauna values are already well known, or if the area is degraded.
  2. Targeted survey: Gathers comprehensive information about the presence, size and extent of significant flora, vegetation and fauna populations.
  3. Detailed survey: Used to gather condition, location and extent of habitats and when the area supports a high diversity (not just threatened species) of flora, vegetation and fauna.

Timing is key, surveys should be undertaken during seasons of maximum fauna activity and techniques should be selected to maximise the likelihood that the survey will detect most of the species that occur.

Flora surveys generally take place in spring to identify notable plants and habitats more easily in their growth phase. Fauna surveys can occur into the summer months to provide the greatest possible chance of locating key species like the Forest Red-tailed Black Cockatoo, Baudin’s Cockatoo and Carnaby’s Cockatoo, and any potential nesting trees while the species are most active.

The experts also look out for high-quality foraging habitat, breeding trees and hollows suitable to support key fauna species.

FAQs