Natalie Duffus

DPhil Candidate

  • Department of Biology

I am a DPhil student in the Department of Biology and Geography, studying Biodiversity Net Gain (BNG) and other methods for ecological compensation, and how they account for real world biodiversity. My DPhil project uses a range of scientific methods (pitfall trapping, emergence trapping, DNA metabarcoding) to address important policy questions, and hopefully prompt changes to how we address impacts on biodiversity.

Related podcasts

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Biodiversity Net Gain – Nat Duffus

In this episode we speak to Nat Duffus to find out the good and the bad about Biodiversity Net Gain which is a major driver of the UK’s policy to improve the state of biodiversity whilst still allowing for development. Some of the things mentioned in this podcast include: Kidbrooke Village Lye Valley and of […]

New housing development UK

What is Biodiversity Net Gain?

Nat Duffus and Sophus zu Ermgassen explain. On February 12th, England’s ambitious new environmental policy, Biodiversity Net Gain (BNG) went live. Underpinned by the Environment Act, this policy lays out the mandatory requirement for new developments to provide a 10% net gain in biodiversity, maintained for at least 30 years. For now, this applies to […]

Photo by Jeremy Waterhouse: https://www.pexels.com/photo/yellow-and-black-excavator-on-green-field-near-leafless-trees-12063807/

Early outcomes of England’s new biodiversity offset market

Natalie Duffus & the BNG team have conducted the first academic analysis of what’s actually happening in the off-site BNG market.

Our response to Defra’s consultation on improving the implementation of Biodiversity Net Gain for minor, medium and brownfield development

We raise concerns about the effect that the proposed changes will have on the demand for units on the off-site BNG market, based on research into the outcomes of the off-site market, & highlight the potential for worsening ecological outcomes from the changes proposed to the Small Sites Metric.

How to make sure the nature credits you buy are real – new research

How biodiversity markets shape nature recovery

Biodiversity markets are increasingly being used in conservation policy, but we still don’t fully understand how their design shapes who gets involved and what actually happens for nature on the ground

Related Outputs

Finance

Five rules for scientifically credible nature markets

Sophus O.S.E. zu Ermgassen, Tom Swinfield, Joseph W. Bull, Natalie E. Duffus, Andrew Macintosh, Martine Maron, Sebastian Theis, Thomas White & Megan C. Evans

Nature Ecology & Evolution (2026)

Systems Finance

Can Biodiversity Markets Deliver Inclusive and Collaborative Nature Recovery? Lessons From Different Habitat Banking Models in England

M. Troiano, S. O. S. E. zu Ermgassen, N. E. Duffus, I. Hawkins, S. Gall, R. Mascia, M. Whitney, H. Thomas, M. Hirons

Environmental Policy and Governance (2026)