What biodiversity and nature assessments actually involve

A biodiversity and nature assessment evaluates the impact a company's operations, supply chain or development activities have on ecosystems, species and natural habitats. For corporate teams, this increasingly means baseline ecological surveys of owned or leased land, dependency and impact mapping across the value chain using tools like ENCORE or TNFD's LEAP approach, and integration of nature risk into financial and strategic planning. It is distinct from carbon accounting, biodiversity loss and climate change are related but require different measurement methodologies.

Why it's harder in practice than it looks

Nature-related data is site-specific and often unavailable at scale

Unlike carbon emissions, which can be modelled from activity data, biodiversity impact requires site-level ecological information that frequently does not exist in corporate datasets. Building this picture across a complex value chain requires both specialist ecological surveys and significant data collection from suppliers.

Methodology is still being standardised

TNFD published its final recommendations in 2023, but corporate adoption is early-stage and practice varies considerably. Companies attempting nature assessments without specialist support often produce outputs that are inconsistent with evolving reporting expectations, creating rework risk as standards consolidate.

Financial materiality of nature risk is difficult to quantify

Translating biodiversity dependencies, pollination, water regulation, soil health, into financial exposure figures requires specialist modelling that most internal sustainability teams do not have the tools or training to deliver.

Stakeholder expectations are rising faster than internal capability

Investors and lenders are increasingly asking for nature risk disclosures alongside climate risk. Companies that cannot provide substantive answers face credibility gaps in capital markets conversations, even when their nature impact is genuinely low.

What good looks like

A credible nature assessment identifies the company's most significant locations of operation and sourcing relative to sensitive ecosystems, quantifies dependencies on key ecosystem services, assesses potential impacts from operational activities, and sets out a management plan with measurable commitments. Output should be structured to align with TNFD's four pillars, governance, strategy, risk management, and metrics and targets, so that it can feed directly into investor and regulatory disclosures.

When to bring in external support

Most corporate sustainability teams lack the ecological expertise required to conduct or commission credible biodiversity assessments. The technical requirements, species surveys, habitat mapping, ecosystem service valuation, sit firmly in specialist territory. Leafr's network includes ecologists, TNFD-experienced consultants and nature risk specialists who have delivered assessments for real estate, food and beverage, and infrastructure clients, providing outputs that are disclosure-ready and investor-grade.

Frequently asked questions

What is a biodiversity assessment and when is it required?

A biodiversity assessment evaluates the impact of a project, operation or supply chain on natural habitats and species. It is required by planning authorities in many jurisdictions before development approval and increasingly expected by investors and lenders under frameworks like TNFD. For companies with significant land use or agricultural supply chains, it is becoming a standard component of ESG disclosure.

What is TNFD and how does it relate to biodiversity assessments?

The Taskforce on Nature-related Financial Disclosures (TNFD) is a framework that guides companies and financial institutions in assessing, disclosing and managing nature-related dependencies, impacts, risks and opportunities. It uses a four-step LEAP approach (Locate, Evaluate, Assess, Prepare) and its recommendations are structured to align with TCFD, making adoption familiar for companies already disclosing climate risk.

How is biodiversity risk different from climate risk?

Climate risk focuses on greenhouse gas emissions and the physical and transition risks associated with climate change. Biodiversity risk focuses on the loss of ecosystems, species and natural processes. The two are related, climate change is a major driver of biodiversity loss, but they require different metrics, data sources and management responses. A company can have low carbon emissions but high biodiversity impact if it sources from sensitive ecosystems.

What tools are used for corporate nature assessments?

Common tools include ENCORE (Exploring Natural Capital Opportunities, Risks and Exposure) for mapping sector dependencies on ecosystem services, IBAT (Integrated Biodiversity Assessment Tool) for site-level analysis, and the TNFD LEAP approach for structuring the overall assessment. Many organisations also use GIS mapping to overlay operational and sourcing locations against biodiversity sensitivity data.

Are biodiversity assessments legally required for businesses?

Legal requirements vary by jurisdiction and sector. In England, Biodiversity Net Gain is now mandatory for most new developments under the Environment Act 2021. The EU Nature Restoration Law is expanding requirements across member states. While general corporate nature disclosures are currently voluntary in most markets, regulatory direction is firmly towards mandatory reporting, and companies that establish assessment capability now will be ahead of the curve.