Invasive Species Presence
Benchmark Value
Scoring Curve
The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.
Evidence & Context
Upper Detrimental Threshold: This is clearly exceeded when invasive species dominate the landscape, causing substantial loss of native biodiversity, and fundamental changes to ecosystem structure and function (e.g., >60-80% Lantana camara cover leading to significant native species loss; dense Gamba grass stands transforming savannas into monocultures with altered fire regimes leading to tree mortality).
Invasive species cover beyond which severe ecological degradation occurs.
This benchmark marks the upper detrimental threshold of invasive species cover in tropical monsoonal savannas under conservation management, beyond which severe ecological degradation occurs.
Threshold based on observed severe impacts at high invasive species cover levels.
Sources (1)
(PDF) Defining and Measuring the Health of Savanna Landscapes ..., accessed May 20, 2025
View SourceSupporting Sources (16)
Additional references from the underlying research that informed this benchmark.
'This is a crisis': The Territory's peak environment groups respond to State of the Environment Report - NationBuilder, accessed May 20, 2025
View Source
'This is a crisis': The Territory's peak environment groups respond to State of the Environment Report, accessed May 20, 2025
View Source(PDF) Biogeography of the Australian monsoon tropics - ResearchGate, accessed May 20, 2025
View SourceA national‐scale dataset for threats impacting Australia's imperiled flora and fauna - PMC, accessed May 20, 2025
View SourceAustralia's Fight to Stop Invasive Gamba Grass Is Noble—But Not ..., accessed May 20, 2025
View SourceBest Management Practices for Invasive Plants - Mayors' Monarch Pledge, accessed May 20, 2025
View Source
Quantifying interception associated with large-scale plantation forestry in the Northern Territory - Resilient Landscapes Hub
View SourceHow researchers are mapping an invasive species advancing ..., accessed May 20, 2025
View SourceSerrated tussock (Nassella trichotoma) - Australian Association of Bush Regenerators
View Source
IR532 - Kakadu National Park Landscape Symposia Series 2007–2009. Symposium 1 - DCCEEW, accessed May 20, 2025
View SourceThe impacts of invasive plant species on biodiversity of Australian rangelands, accessed August 12, 2025
View SourceThe threats to Australia's imperilled species and implications for a national conservation response - CSIRO Publishing, accessed July 19, 2025,
View Source
www.sprep.org, accessed May 20, 2025
www.sprep.org, accessed May 20, 2025
www.sprep.org, accessed May 20, 2025
www.sprep.org, accessed May 20, 2025,