Biodiversity & Nature
Biodiversity credit
A certificate representing a measured gain in biodiversity over a defined area and period — an emerging instrument for channelling private finance to conservation, with unresolved integrity questions.
Expert review openNo editor-accepted expert review yetDefinition
A tradable certificate issued when measurable positive outcomes for biodiversity are achieved over a defined period. Units are typically built from a combination of land area, measured ecological gains (through a suite of metrics) and the duration of the commitment. Definitions vary between schemes, and there is no single agreed standard — a key difference from carbon credits, which at least share a common unit (one tonne of CO₂e).
References
Working definition (area × measured gain × duration); market size today (~$8m) and projections ($0.8–2bn 2030; $6–69bn 2050); integrity conditions (science, governance, benefit-sharing); no-offset positioning.
Overview
What it means
Biodiversity credits are explicitly designed not to be offsets: most credible schemes reject the idea that a credit can "cancel out" damage elsewhere, positioning credits instead as positive contributions to nature. The market is embryonic — valued at roughly $8 million today, with projections ranging from $0.
8–2 billion annually by 2030 and wildly divergent estimates ($6–69 billion) by 2050 — reflecting genuine uncertainty about demand, measurement and governance.
How it is used
Pilots operate in Australia, Colombia, France and elsewhere, mostly voluntary; certification bodies and NGOs are developing integrity frameworks covering baseline-setting, additionality, permanence and benefit-sharing with indigenous peoples and local communities. Policy interest follows the Kunming-Montreal framework's finance targets.
Why it matters
The instrument could mobilise long-term finance for locally led conservation — or replicate carbon offsetting's integrity failures in a field where measurement is far harder. How "credit" is defined (outcome vs activity, offset vs contribution) will decide which.
Definitions and controversy
No consensus definition exists; offsetting-style use (biodiversity offsets traded as credits, for example under England's biodiversity net gain rules) is a related but distinct application with its own controversies.
Review
Public comments appear only after editor acceptance. Draft comments stay in the review queue.
Reviewers choose the definition or an overview paragraph, leave a comment or replacement, and attach evidence or a source link.
Editors compare reviewer cards side by side. AI may help find agreement, conflicts, unsupported claims and possible source issues.
Only an editor-accepted synthesis changes the public page. Reviewer identities are shown only with consent and verification.
Submitted reviews stay private until accepted.
Loading verified endorsements… Endorsements are not votes and never determine publication.
Endorse this definition
Endorse the exact version shown here. This is not a vote, and publication remains an editorial decision.
Review board
Comment on a specific line. Each reviewer stays separate until an editor accepts a merged draft.
Each person comments on the definition or overview in their own draft card, with role, evidence and suggested wording kept together.
AI can compare comments against the current text, flag conflicting claims, surface missing evidence and identify where reviewers agree.
An editor merges compatible suggestions into a draft change, checks sources, records disagreements and decides what can be published.