Sustopedia

Search Sustopedia

Results stay grouped by content type. A future collection joins Search as its own labelled group when its public index is ready.

MetricInvasive alien species

Invasive alien species extent, effective management and clearance

Measurement answer

What this metric measures

Structured disclosure of invasive alien species extent on organizational land, the proportion effectively managed, and area successfully cleared during the reporting period as part of ecological-impact mitigation.

Specification

Metric specification

Result format
Multi-field profile
Unit
Structured table — see field-level units
Reporting basis
reporting period
Aggregation
Report each field for owned, controlled, managed or leased land; retain the area, percentage and clearance fields separately rather than combining them into one total.
Pillar
Environmental
Topic
Invasive alien species
Controlled domain
Nature, biodiversity and land
Entity type
Metric

Reporting boundary

Owned, controlled, managed or leased land within the organization's ecological-impact mitigation boundary.

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 Disclosure

    TNFD sector guidance

    Source evidence
    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
    Additional sector guidance, section 3.3, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric EH.A23.1 / RE.A23.1, p. 80. | Page 80, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric no. EH.A23.1 / RE.A23.1
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    EH.A23.1
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, January 2025
    Requirement
    Recommended
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 80, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric no. EH.A23.1 / RE.A23.1
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    RE.A23.1
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, January 2025
    Requirement
    Recommended
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 80, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric no. EH.A23.1 / RE.A23.1
    Open official framework source

Value structure

Dimensions and units

Unit
Structured table — see field-level units
Reporting basis
reporting period

Unit meaning: Each field uses its stated unit and retains the applicable sector, reporting boundary, period and method.

Table fields and units

  • land relationship
  • area with invasive alien species present
  • share effectively managed (%)
  • area successfully cleared during the reporting period
  • management and clearance assessment basis

Published dimensions

  • land relationship: owned, controlled, managed or leased
  • invasive alien species management status
  • reporting-period clearance outcome

Disclosure method

Formula information

Status
Not applicable
Formula type
Structured Disclosure

Disclosure form

No single formula

Report the source-defined result with its stated fields and method disclosures. The candidate is a reportable structured family containing distinct extent, management-performance and clearance-outcome fields. It should remain distinct from CM.A2.0 because its land boundary and fields include presence, effective management and clearance. No shortlisted metric has the same complete construct, fields, boundary and value shape.

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
    Additional sector guidance, section 3.3, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric EH.A23.1 / RE.A23.1, p. 80. | Page 80, Response > Dependency, impact, risk and opportunity management: Changes to nature (dependency and impact): mitigation hierarchy steps, metric no. EH.A23.1 / RE.A23.1

    Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Invasive alien species extent, effective management and clearance”.

    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 basis for identifying land on which invasive alien species are present.
  • Define the criteria used to determine that invasive alien species are effectively managed.
  • Describe the basis for determining that an area was successfully cleared during the reporting period.
  • State which owned, controlled, managed and leased land is included in the disclosure.

Record-specific limitations

  • The source describes three distinct fields with different units and outcome meanings; they must not be aggregated into a single area or percentage.
  • The reported share effectively managed depends on the organization's definition and assessment of effective management.
  • The source excerpt does not specify whether areas containing multiple invasive alien species may be counted more than once.

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.