Affected species population state
Measurement answer
What this metric measures
Baseline and current population observation for a named affected or potentially affected species in a fixed area, using an explicit biological measure and repeatable survey method.
Specification
Metric specification
- Result format
- Structured table
- Unit
- Structured table — see field-level units
- Reporting basis
- Paired baseline and current observation in a fixed area
- Aggregation
- Compare only compatible taxon, area, method, season, measure, and unit
- Pillar
- Environmental
- Topic
- Biodiversity, ecosystems and land
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
One named taxon and fixed local assessment area with comparable baseline and current observations using the same biological measure, unit, season, survey method, and assessment scope.
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
GRI Standards
- Publisher
- Global Reporting Initiative
- Edition
- Published 2024; effective for reporting from 1 January 2026
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Effective-date notice and Disclosures 101-2, 101-5, 101-6, and 101-7, PDF pages 1–2 and 9–30
- Adopting Disclosure37cf27efcfc9d69872f8
TNFD Recommendations
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- September 2023
- Requirement
- Not Specified
- Relationship
- Reuses Canonical Metric
- Mapping outcome
- Reused
- Source locator
- Page 32, bullet list and Figure 13: Components of state of nature measurement
- Adopting Disclosure9c0bb9faa693dd3b46a7
TNFD Recommendations
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- September 2023
- Requirement
- Not Specified
- Relationship
- Reuses Canonical Metric
- Mapping outcome
- Reused
- Source locator
- Page 92, metric A5.4
Value structure
Dimensions and units
- Unit
- Structured table — see field-level units
- Reporting basis
- Paired baseline and current observation in a fixed area
Unit meaning: This metric is reported as a structured table; each field carries the unit stated in the table fields below.
Table fields and units
- Taxon, site, fixed assessment area, and actual or potential relationship
- Baseline year and value (named biological measure and unit)
- Current observation date and value (same biological measure and unit)
- Measure (individuals, mature individuals, breeding pairs, named index, or habitat area)
- Survey method, effort, season, detection correction, proxy state, source, uncertainty, and scope
Published dimensions
- Taxon, fixed area, relationship state, baseline, current observation, biological measure, and survey method
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaPopulate the structured fields from qualifying source observations and retain each field-level unit, boundary, status, and method; do not collapse the disclosure into one calculated value.
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 15 August 2026
GRI 101: Biodiversity 2024
- Publisher
- Global Reporting Initiative
- Edition
- Published 2024; effective for reporting from 1 January 2026
- Locator
- Effective-date notice and Disclosures 101-2, 101-5, 101-6, and 101-7, PDF pages 1–2 and 9–30
Supports: Official publisher reference linked specifically to the Sustopedia metric “Affected species population state”; interpret it with the source-edition basis and limitations shown on this page.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: Effective GRI 101: Biodiversity 2024 species-state guidance and binding ESRS E4-5 under Regulation (EU) 2023/2772.
- Name taxon, site, fixed assessment area, and actual or potential relationship.
- State baseline year and value, current observation date and value, biological measure, and unit.
- Use one compatible series: individuals, mature individuals, breeding pairs, a named relative-abundance index, or hectares of species habitat.
- State survey method, sampling effort, season, detection correction, proxy state, data source, and uncertainty.
- Keep local, regional, and global populations and different species non-additive.
Record-specific limitations
- Detectability, sampling effort, season, migration, and natural variability can change observed population values.
- Habitat area is a proxy and cannot be substituted for an individual count or relative-abundance index.
- Observed change is local and is not automatic attribution to the reporting organization.
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.