Great Crested Newt survey
eDNA Sampling. For the field sampling, a trained and liscenced great crested newt surveyor identifies where twenty water sub-samples are to be extracted. Particular focus is given to areas with suitable egg-laying vegetation and open water, which may be utilised for mating displays. Specialist kits are used to collect the samples following strict guidelines and then sent to our professional lab for analysis. As eDNA persists in waterbodies (excluding sedimentary deposits) for a relatively short period of time, collected samples should contain the DNA fragments of great crested newts that were recently present within the waterbody. This technique has been supported by Natural England and, where negative results are returned following analysis, the requirement of further survey using the standard bottle trapping, egg search and torchlight methods can be omitted, saving clients time and money. A study published by DEFRA (Department for Environment, Food and Rural Affairs) and conducted by the Freshwater Habitats Trust, showed that eDNA sampling used to determine the presence of GCN had an accuracy level of 99.3%, compared to only 76% via the standard bottle trapping technique.
Find out more about our Species and Habitat surveys