Click through the different typologies to see why including anthropogenic systems
such as land-use or non-remnant ecosystems can be problematic.
Choose Typology Layer
Legend
Click a polygon to inspect
Click any polygon on the map for details.
Different methods of measuring ecosystem state yield very different results.
Click through each to see how modelled-pressure state indices (MSA, BII),
remotely sensed indicator (EVI), and a manual expert classification (MESA) vary.
Select Biodiversity Method
Avg Condition
1.61 / 6
MESA score (2024)
Present Biodiversity
515 ha eq
PBF (paper value)
PBF Comparison — All Methods
Legend
Click a polygon to inspect
Select a method, then click any polygon on the map.
Our Manual Ecosystem State Assessment (MESA) is a simple approach to provide a consistent
and transparent means of estimating ecosystem state across large areas using available
field-data and/or imagery analysis to assess state with varying confidence levels.
Click through here to see how we used field data for the offset site but imagery for the remainder.
Statement of Position
| 2020 | 2024 | Net change | |
|---|---|---|---|
| TBF (ha) | 1,962.47 100.00% | 1,962.47 100.00% | 0.00 0.00% |
| PBF (ha eq.) Positive impacts |
515.53 26.27% | 515.71 26.28% | +0.19 +0.04% |
| NBF (ha eq.) Negative impacts |
1,446.94 73.73% | 1,446.75 73.72% | −0.19 −0.01% |
MESA Map Style
Legend
Assessment Confidence
Best 31%
Better 1%
Fair 68%
Click a polygon to inspect
Click any MESA polygon for details.
Takeaway: MESA delivers a +0.19 ha eq net biodiversity
improvement 2020–2024. 31% of polygons are assessed at Best confidence (transformation),
with 68% at Fair — indicating strong data quality for a corporate biodiversity footprint.
Importantly, the full biodiversity accounts allow the auditable tracking of NNL/NPI per ecosystem.
See downloads for more.