Extent of site-level ecosystem services assessments
Measurement answer
What this metric measures
Reports the proportion of priority sites that have completed a site-level ecosystem services assessment.
Specification
Metric specification
- Result format
- Single value
- Unit
- % — source-defined reporting unit
- Reporting basis
- Reporting period covered by the disclosure
- Aggregation
- Percentage of priority sites that have completed a site-level ecosystem services assessment
- Pillar
- Environmental
- Topic
- Ecosystem services assessment
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
Priority sites identified by the organization
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 sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Page 88, sector metric table, MM.A25.0
- Adopting DisclosureMM.A25.0
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2024
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 88, sector metric table, MM.A25.0
Value structure
Dimensions and units
- Unit
- % — source-defined reporting unit
- Reporting basis
- Reporting period covered by the disclosure
Unit meaning: Values use % under the disclosed TNFD sector-guidance method, reporting period and boundary.
Published dimensions
- priority-site category where used
- geography where used
- assessment-completion status
Calculation method
Formula information
- Status
- Specified
- Formula type
- Percentage
Formula
P = (N_assessed / N_priority) × 100Apply the source-defined TNFD sector-guidance method within the stated reporting boundary. The candidate is a directly reportable percentage with an explicit population, numerator and assessment-completion outcome. It is distinct from ecosystem extent and from site-level action-plan disclosures.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
P | Extent of completed site-level ecosystem services assessments | Percentage of priority sites with a completed site-level ecosystem services assessment. | % |
N_assessed | Priority sites assessed | Number of priority sites that have completed a site-level ecosystem services assessment. | sites |
N_priority | Priority sites | Total number of priority sites in the reporting boundary. | sites |
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 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Page 88, sector metric table, MM.A25.0
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Extent of site-level ecosystem services assessments”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Define the population of priority sites used as the denominator.
- Define the criteria used to determine that a site-level ecosystem services assessment has been completed.
- Disclose the assessment approach and any alignment with GRI 101 Biodiversity or ESRS 2 IRO-1(b).
- State the reporting-period basis for the assessment-completion status.
Record-specific limitations
- The result depends on the organization's identification of priority sites.
- The percentage indicates completion of an assessment and does not measure ecosystem-service condition, impacts or outcomes.
- Comparability depends on consistent definitions of priority sites and completed site-level assessment.
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.