Invasive Species Presence
Benchmark Value
Evidence & Context
"Under these requirements, the minimum accepted threshold used to consider a grassland as being native vegetation is the requirement that greater than 50% of the groundlayer cover is of native species."
Total ground layer cover composed of native species. Conversely, if more than of the ground layer cover consists of exotic perennial species, the community is categorized as non-native or 'Low Conservation Value'.
Widely adopted regulatory threshold used across the Southern Tablelands of NSW and ACT to determine native grassland conservation value.
The cited source explicitly identifies the value as a binding statutory threshold for conservation target grasslands in the temperate dry grassland biome of Australia.
Sources (1)
Revised Floristic Value Scoring Method for grassland condition
View SourceSupporting Sources (4)
Additional references from the underlying research that informed this benchmark.
Final Prescription for Natural Temperate Grassland of the Victorian Volcanic Plain
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Grassy Eucalypt Woodland of the Victorian Volcanic Plain Conservation Advice
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Vegetation Quality Assessment Manual: Guidelines for applying the habitat hectares scoring method
View Source
White Box-Yellow Box-Blakely's Red Gum Grassy Woodlands and Derived Grasslands
View Source