"Are the foundational structures required to support life present, accessible and maintained?"
Structural Integrity refers to the shape, distribution and governance architecture of a bioregion's tangible and intangible infrastructure: the spatial arrangement of habitats and settlements, the connectivity of landscapes and waterways, the distribution of critical infrastructure, and the governance structures through which collective decisions are made.
It's less concerned with what exists than with how it's organised. A bioregion may hold abundant ecological or economic assets and still show low structural integrity if those assets are fragmented, centralised, poorly connected, or governed through brittle institutions. Well-connected habitats, distributed infrastructure and polycentric governance raise a bioregion's capacity to absorb disturbance, coordinate across scales, and sustain resilience over time.
Factors
- Geospatial mapping (habitat corridors, fragmentation indices): overlay land-cover and habitat layers in GIS, trace corridor continuity between patches, and calculate fragmentation metrics such as patch size and edge density.
- Habitat types & relative sizes: classify the distinct habitat types present and measure the area each occupies relative to the whole.
- Edge-to-core ratio: measure the share of each habitat patch sitting in edge zones versus undisturbed core, from patch geometry in land-cover maps.
- Power-concentration heatmaps: map which bodies hold formal decision rights over which resources or territories, and visualise where that authority clusters or disperses.
- Spatial accessibility: measure travel time or distance from each settlement to essential infrastructure (water, energy, healthcare, etc.) to map coverage gaps.
- Redundancy of essential infrastructure: inventory backup or alternative provision for each critical service and record how many independent pathways exist if one fails.