TNFD vs GRI 101 Biodiversity: Key Differences and Practical Interoperability

Nature reporting teams often face one practical reality: the same sites, suppliers, ecosystems and business activities appear in several reporting systems. It is reasonable to want one controlled evidence base. The mistake is to assume that common evidence creates a common reporting conclusion.

The joint TNFD-GRI mapping describes a high level of alignment in language, definitions and many datapoints. It also identifies high-level differences that preparers must preserve. The right operating model is therefore shared evidence with framework-specific analysis, not two disconnected projects and not one blended checklist.

TNFD: decision-useful information on nature-related issues

TNFD uses four connected concepts: dependencies on nature, impacts on nature, nature-related risks and nature-related opportunities. Its 14 recommended disclosures follow the governance, strategy, risk and impact management, and metrics and targets pillars. The recommendations are designed to support capital providers and other users while remaining flexible enough for organisations that also report to broader stakeholders.

TNFD recommends the ISSB definition of material information as the baseline. An organisation may add an impact materiality definition where it chooses to do so or where another reporting requirement calls for it. This design allows TNFD to support investor-focused reporting, impact reporting or a double-materiality architecture, provided the approach is clearly stated and applied consistently.

GRI 101: reporting significant impacts on biodiversity

GRI 101 is a Topic Standard used within the GRI Standards architecture. When biodiversity is a material topic, the organisation reports relevant disclosures on how it manages biodiversity-related impacts and on the impacts themselves. Its eight disclosures cover policies, management actions, access and benefit-sharing, impact identification, locations, direct drivers of biodiversity loss, changes to the state of biodiversity and ecosystem services.

The GRI materiality process focuses on the organisation's most significant impacts on the economy, environment and people, including human rights. GRI 101 therefore does not become a financial-risk standard simply because some impact data can support a TNFD risk assessment.

Figure 1. TNFD and GRI 101 share many nature-data inputs but retain different reporting lenses and outputs.

The joint mapping reports that all GRI 101 disclosures are reflected in the TNFD Recommendations and that TNFD recommendations are reflected across the GRI Standards except disclosures that are exclusively about identifying and assessing nature-related risks and opportunities. This is a powerful interoperability signal, but it is not a statement that each datapoint has identical scope, wording or materiality.

The mapping also highlights several practical connections:

consistent use of nature-related concepts and the five direct drivers of biodiversity loss;

reference to the GRI impact-materiality approach within TNFD's flexible materiality model;

use of the TNFD LEAP approach in GRI 101 guidance for identifying where impacts are most likely to be present and significant;

shared emphasis on location-specific information and ecologically sensitive areas;

strong consistency between TNFD core global disclosure metrics and related GRI metrics; and

the ability for GRI reporters to reuse existing reporting and identify additional information needed for TNFD.

Nature is spatially explicit. A water withdrawal, land conversion or pollution release can have very different consequences depending on the ecosystem, basin condition, species, community rights and cumulative pressure at the location. Both frameworks therefore require more than a group-wide total.

TNFD priority locations

TNFD Strategy D asks for locations of assets or activities in direct operations and, where possible, the upstream and downstream value chain that meet the criteria for priority locations. Priority locations include locations where material nature-related issues have been identified and locations that are sensitive because of ecological characteristics or stakeholder considerations. The organisation should avoid aggregation that obscures materially different natural contexts.

GRI 101 locations with the most significant impacts

GRI 101 focuses much of its site-level reporting on locations with the most significant biodiversity impacts. It also asks whether those sites are in or near ecologically sensitive areas. A site can therefore be ecologically sensitive without necessarily becoming a reportable site under every GRI 101 disclosure if the organisation has not identified a significant impact there; that conclusion still needs a defensible impact assessment.

Practical control. Maintain one location master with coordinates, ecosystem and biome attributes, protected or sensitive-area flags, water-stress information, community and rights-holder context, business activity, source systems and data quality. Add separate TNFD priority-location and GRI significant-impact conclusions rather than one universal yes/no field.

Both systems extend beyond direct operations. TNFD expects the organisation to describe the scope assessed and disclosed, including exclusions and future expansion. GRI covers impacts linked through business relationships and includes specific supply-chain expectations within GRI 101.

A practical value-chain model should distinguish at least: supplier tier, product or commodity, geography, business relationship, traceability level, biodiversity interface, impact evidence, dependency evidence, risk pathway, data source, estimate method and remediation plan. The organisation should not describe the whole value chain as assessed merely because a high-level sector heatmap has been completed.

The most efficient approach is a controlled nature-data hub with reusable evidence fields and separate reporting views.

Figure 2. One controlled evidence base can feed separate TNFD and GRI decisions without collapsing their materiality lenses.

Step 1 - lock the reporting objectives and claims

State whether the organisation is preparing a TNFD-aligned disclosure, reporting in accordance with GRI, meeting a jurisdictional requirement or combining these objectives. Assign an owner for each claim.

Step 2 - build one complete activity and location universe

Map direct operations and relevant value-chain activities before filtering. Use stable identifiers so that sites, suppliers and products can be traced across systems and reporting periods.

Step 3 - identify dependencies and impacts

Use scientific, operational and stakeholder evidence. Record pathways and uncertainty, not only topic labels. Where LEAP is used, retain outputs from Locate and Evaluate as reusable evidence.

Step 4 - run separate materiality tests

Assess significant impacts under the GRI methodology. Separately assess which nature-related risks and opportunities could affect the organisation's prospects for the TNFD investor-oriented output. If double materiality applies, retain two decision records rather than blending them into one score.

Step 5 - map disclosures and metrics

Use the official mapping as a completeness tool. For each correspondence, record whether the existing evidence is an exact match, partial match, supporting evidence or a gap. Reconcile units, boundaries, periods, value-chain coverage and definitions.

Step 6 - draft framework-specific narratives

GRI wording should explain impacts and management. TNFD wording should connect dependencies and impacts to strategy, risk management, financial planning, metrics and targets. Shared facts can be cross-referenced, but the analytical conclusion should remain visible.

Step 7 - control claims and sign-off

Require technical review of every statement using words such as aligned, in accordance, complete, nature positive or double materiality. Retain the mapping, limitations, source versions, reviewers and board or management approvals.

Context. A food manufacturer operates three processing sites and sources fruit, dairy and packaging from multiple regions. Water availability, pollination, soil condition and land-use change are relevant nature interfaces.

Shared evidence. The company builds a supplier-and-site register with coordinates, basin condition, protected-area proximity, commodity volume, land-use-change screening, water data, ecosystem-service dependencies, community concerns and data-quality grades.

GRI output. The impact assessment identifies significant negative impacts from water abstraction in one stressed basin and potential land conversion in a priority commodity supply chain. The report explains policies, actions, affected locations, direct drivers, changes in the state of nature and ecosystem services.

TNFD output. The company uses the same evidence to identify production interruption, input-price volatility, licence-to-operate risk and an opportunity to secure resilient regenerative supply. It discloses priority locations, governance, strategy effects, risk-management processes and selected metrics.

Limitation. This is an illustrative scenario. It does not determine material topics, priority locations or metrics for a real organisation.

1. Treating the mapping as a certificate of equivalence

Risk: missing TNFD risk/opportunity disclosures or GRI impact requirements. Correction: use the mapping as a correspondence and gap-analysis tool, not as a blanket claim.

2. Using one blended materiality score

Risk: impact severity and investor relevance become indistinguishable. Correction: maintain separate tests, then present the relationship between the results.

3. Reporting only direct operations

Risk: significant supply-chain impacts and dependencies are missed. Correction: document value-chain scope, prioritisation, data limitations and expansion plans.

4. Aggregating locations with different ecological conditions

Risk: material site-level information disappears. Correction: define aggregation rules based on shared natural characteristics and material information.

5. Reusing metrics without reconciling definitions

Risk: identical labels hide different units, boundaries or periods. Correction: maintain a metric dictionary and reconciliation record.

6. Confusing activity with outcome

Risk: expenditure, hectares managed or supplier engagement is presented as proof of improved biodiversity. Correction: distinguish response, pressure and state-of-nature metrics and disclose limitations.

SRC-01 · Recommendations of the Taskforce on Nature-related Financial Disclosures - TNFD (Version 1.0, September 2023). https://tnfd.global/wp-content/uploads/2023/08/Recommendations_of_the_Taskforce_on_Nature-related_Financial_Disclosures_September_2023.pdf

SRC-03 · Guidance on the identification and assessment of nature-related issues: the LEAP approach - TNFD (Version 1.1, October 2023; webpage last updated June 2026). https://tnfd.global/publication/additional-guidance-on-assessment-of-nature-related-issues-the-leap-approach/

SRC-05 · Interoperability mapping between the GRI Standards and the TNFD Recommendations and metrics - accompanying guide - GRI and TNFD (July 2024). https://www.globalreporting.org/media/2bocmv0b/240729-accompanying-guide.pdf

SRC-06 · TNFD-GRI table of correspondences - GRI and TNFD (July 2024). https://www.globalreporting.org/media/2qblbhzw/240729_tnfd-gri-mapping.xlsx

SRC-07 · GRI 101: Biodiversity 2024 - Global Sustainability Standards Board / GRI (Published January 2024; effective 1 January 2026). https://www.globalreporting.org/pdf.ashx?id=24534

SRC-08 · GRI Topic Standard for Biodiversity project page - GRI (Current page checked 3 August 2026). https://www.globalreporting.org/standards/standards-development/topic-standard-for-biodiversity/

SRC-09 · GRI 101: Biodiversity 2024 FAQs - GRI (Updated October 2024). https://www.globalreporting.org/media/n5lf4o5x/faqs-biodiversity_external_final_updated-oct-2024.pdf

Publication status: Source-grounded publication-ready draft - human technical sign-off pending. This article is educational material and does not replace the official TNFD, GRI or IFRS sources, legal advice or assurance procedures.