eDNA testing

At Thomson, we offer eDNA (environmental DNA) testing to our clients as a cost effective solution to inform ecological assessments such as EcIA and EIA’s.

What is eDNA testing?

Environmental DNA  testing is a pioneering method which is used to evaluate the presence or absence of a certain protected species, such as great crested newt (GCN), in water bodies on your site.

Whilst currently mainly used to verify the presence or absence of great crested newts, survey collection of eDNA data involves taking water samples from ponds or ditches, which are then tested for residual DNA.

Advantages of eDNA testing

Fully approved by Natural England, this methodology has the following advantages over traditional techniques:

  • It requires only one visit to each pond – making it a very cost effective solution
  • Visits can be made up until the end of June, later than traditional survey methods.

Innovation and eDNA

eDNA can be uses in the analysis of other plant and animal material to support species identification, for example, using droppings and hairs of bats and other small mammals. New applications for other species are anticipated in the near future.

Thomson Ecology is involved with the very latest development of this technology, working in collaboration with Imperial College London.

To talk to us about using eDNA on your project, or discuss traditional methods of great crested newt surveying, get in touch today.

Key Contact

Richard Arnold


Guildford Office

Compass House
60 Priestley Road
Surrey Research Park

+44(0)1483 466 000

Further reading and related articles

Thomson’s ecology handbook

This online version of the Thomson’s ecology handbook provides a general overview of current wildlife legislation* and is aimed at helping project managers understand and plan for ecology from the start.

Find out more

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