Journal article

Threatened species impact assessments: survey effort requirements based on criteria for cumulative impacts

Gurutzeta Guillera-Arroita, Jose J Lahoz-Monfort, Michael A McCarthy, Brendan A Wintle



Aim: Environmental impact assessments (EIAs) often involve establishing whether a species of concern is present at the site considered for development. When surveys falsely conclude that sites are unoccupied, species prevalence in the region is cumulatively reduced. We argue that setting an acceptable level of induced decline in species occurrence provides a defensible strategy to determine minimum survey effort requirements. We investigate methods for setting such requirements. Location: Eastern Australia, although we demonstrate methods applicable wherever species detection data are available to inform survey design. Methods: We use probability theory to investigate required survey effort ..

View full abstract


Funding Acknowledgements

This work was supported by the Australian Research Council (ARC) Centre of Excellence for Environmental Decisions, the National Environment Research Program (NERP) Decisions Hub, and ARC Future Fellowships to MM and BW. Survey data were provided by the Victorian Biodiversity Atlas, the Atlas of New South Wales Wildlife and the Queensland Government's Wildlife Online database. The authors thank Cindy Hauser, Geoff Heard, Jane Elith, the editor and three anonymous referees for useful comments.