Scope - This is a project-scale assessment based on a targeted assessment of native vegetation condition within the Environmental Account area. As such, the condition of this Asset is expected to be representative within the Environmental Account area only (16,744 ha being 64% of the 26,308 ha Property) and not the entire property.

Stratification - Vegetation Classes were delineated using the mapping product and were not ground-truthed, validated or modified.

Data Collection - Non-native cover was not directly assessed in the field during the baseline survey (i.e. 2018). Presence of non-native species during baseline survey could be validated using visual inspection of photographs at photopoints but cover could not be reliably estimated. Instead, non-native cover for all plots in baseline survey was assumed to be the same as assessed in the field during the subsequent monitoring survey (i.e. 2022).

Site context was derived using the most recent available Regional Ecosystem mapping (version 12, Queensland Herbarium and Biodiversity Science 2021a) which is based on 2019 data. Updated mapping needed to quantify change in site context over time is not currently available. Instead, we take the conservative approach and assume that site context has been static over the monitoring period (2018 to 2022).

Two of the assessment units contained non-matching plots between the baseline survey and monitoring survey (AU2 and AU3). For AU2, two additional plots were added in the monitoring survey to meet minimum sample size requirements (i.e. plots 19010, 19017). The sample site shortfall for the 2018 survey is due to the data being collected prior to the Accreditation of the GreenCollar Native Vegetation Condition Monitoring Method. For AU3, plot 18992 was sampled in the baseline but not repeated in the monitoring survey. However, a neighbouring plot 18999 was surveyed in the monitoring survey and was used as a substitute for the purposes of the environmental account. These two plots are separated by a distance of approximately 113m. Reanalysis of the environmental account excluding the non-matching plots did not materially change the estimated Econd® scores or estimated change in Econd® score (i.e. 15.6 Econd® score for 2018; 18.7 Econd® score for 2022; or, a 3.1 increase in Econd® score between 2018 and 2022). Exclusion of non-matching plots did however reduce the apparent negative change in Econd® score for assessment unit 2 between 2015 and 2022 (i.e. 24.6 Econd® score for 2018; 23.7 Econd® score for 2022; or, a 1.1 decrease in Econd® score between 2018 and 2022).