Fragmentation is the habitat fragmentation pressure component of MSA, measuring biodiversity loss due to landscape fragmentation and reduced ecological connectivity. MSA values range from 0 (complete biodiversity loss) to 1 (pristine, undisturbed ecosystem). The total MSA is the product of all pressure components.
Each pressure component is derived from peer-reviewed dose–response relationships calibrated on global biodiversity datasets (GLOBIO model framework).
Mini Bar Chart. A horizontal bar showing this pressure component's contribution to the overall MSA score.
Purpose: How much does fragmentation pressure reduce biodiversity at this site?
Description: A horizontal bar colored by quality level (green = low pressure, red = high pressure). The bar length represents the MSA value (0–1) for this specific pressure.
How it's calculated: The pressure value is derived from the GLOBIO dose–response model using site-specific input data (land cover, climate projections, infrastructure density, or landscape connectivity depending on the component).
Legend:
| Level | Range | Color | Meaning |
|---|---|---|---|
| A | 0.8 – 1.0 | ■ #00A67A | Low pressure; near-pristine |
| B | 0.6 – 0.8 | ■ #00DF80 | Moderate pressure |
| C | 0.4 – 0.6 | ■ #FFD21E | Significant pressure |
| D | 0.2 – 0.4 | ■ #FF8B16 | High pressure |
| E | 0 – 0.2 | ■ #FF367F | Severe pressure; major biodiversity loss |
Interpretation example:
If the bar shows 0.72 for Fragmentation, it means this pressure has reduced the expected species abundance to 72% of the pristine baseline — a moderate impact.
| Source | Provider | Coverage | Resolution | Period |
|---|---|---|---|---|
| GLOBIO Model Framework | PBL Netherlands | Global | ~10 km | Varies by component |
The MSA pressure component is computed from the GLOBIO dose–response relationships. Site-specific input data is processed through the geo pipeline to derive the pressure value for the site polygon and control area.