Ecosystem connectivity measurement
Measurement answer
What this metric measures
Method-selected quantitative measurement of ecosystem connectivity for a stated ecosystem and geographic assessment boundary.
Specification
Metric specification
- Result format
- Structured table
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting period
- Aggregation
- Report connectivity measurements separately by ecosystem, location, and selected method; do not aggregate locations with materially different natural characteristics without retaining disaggregated results.
- Pillar
- Environmental
- Topic
- Ecosystem connectivity
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
Each ecosystem, landscape, seascape, site, priority location, or other stated geographic area to which the selected ecosystem-connectivity method is applied.
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD Recommendations
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- September 2023
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- TNFD Recommendations, September 2023, PDF page 92, Annex 2 additional metric A5.2.
- Adopting Disclosure1b45069fa518fc136f86
TNFD Recommendations
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- September 2023
- Requirement
- Not Specified
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 92, metric A5.2 | TNFD Recommendations, September 2023, PDF page 92, Annex 2 additional metric A5.2.
Value structure
Dimensions and units
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting period
Unit meaning: Each field uses its source-defined unit and retains the applicable location, ecosystem type, value-chain position, status and method.
Table fields and units
- ecosystem or biome
- geography
- assessment area or boundary
- connectivity type
- selected metric or index
- connectivity value
- unit or scale
- direction of performance
- reference condition or comparator
- spatial resolution
- data source
- direct, modelled, or proxy method
- reporting period
- limitations
Published dimensions
- ecosystem or biome
- geography
- site or priority location
- assessment area or boundary
- connectivity type: structural or functional, where applicable
- selected method or index
- measurement value
- measurement unit or scale
- reference condition or comparator, where applicable
- reporting period
- direct versus proxy method
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. A5.2 requests a quantitative measure of ecosystem connectivity but supplies examples rather than a universal metric specification. It is therefore publishable only as a method-selected, location-specific structured metric; the selected index, unit, and calculation approach must be disclosed rather than inferred from TNFD guidance.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 27 August 2026
Recommendations of the Taskforce on Nature-related Financial Disclosures
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- September 2023
- Locator
- TNFD Recommendations, September 2023, PDF page 92, Annex 2 additional metric A5.2.
Supports: The official TNFD Recommendations source supports the identity, boundary and method basis of “Ecosystem connectivity measurement”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: Recommendations of the Taskforce on Nature-related Financial Disclosures, September 2023.
- Name and describe the selected ecosystem-connectivity metric, index, or method.
- State whether the measure concerns structural connectivity, functional connectivity, or another defined connectivity concept.
- Disclose the geographic assessment boundary, ecosystem or biome, spatial resolution, and reporting period.
- State the measurement unit, scale, direction of desired performance, calculation inputs, assumptions, and any reference condition or comparator.
- Disclose data sources and whether the result is directly measured, modelled, or derived through a proxy.
- Explain material limitations and comparability constraints.
Record-specific limitations
- TNFD does not prescribe one universal connectivity index, unit, reference condition, or calculation method.
- Connectivity values generated by different indices, spatial resolutions, ecological assumptions, or assessment boundaries may not be comparable.
- A connectivity measure is not interchangeable with ecosystem condition, habitat area, or species population state.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.