Crayfish Surveys and Services

Why do I need a crayfish survey?

Our native white-clawed crayfish has seen a substantial reduction in the extent of their distribution, due to a number of factors, including reduced quality and pollution of watercourses; competition and disease transmitted by introduced crayfish such as the American Signal Crayfish; and through habitat modifications such as canalisation along many rivers and streams. The species is protected on a UK level in an attempt to halt and reverse this decline - therefore where a development proposal may impact upon white-clawed crayfish and their habitats, an assessment is likely to be required to support a successful Planning Application.

 

How can LSC help?

Our team are experienced in undertaking surveys of white-clawed crayfish in a wide range of different habitats in the UK. If commissioned to undertake a Phase 1 and Protected Species Scoping Survey, we would use this opportunity to assess the potential of your site to support white-clawed crayfish. We take into account a range of factors such as substrate and underlying geology, geographical location and the presence of suitable refuges.

Where an initial survey indicates white-clawed crayfish may be present, the next step is to undertake a presence/absence surveyusing one of several specialist techniques such as activity searching, netting, torch surveys or trapping. If white-clawed crayfish are confirmed, we would provide advice and guidance on how to avoid or minimise impacts to these species in the first instance. Where this is not possible, we would help to design and undertake a mitigation and translocation strategy and apply for a licence in order to protect the population both during construction and in the long term. This allows your project to move forwards whilst ensuring that your contractors stay on the right side of the law.

Find out more about the survey types below, or contact us for advice on what surveys you would need to support your project.


Habitat Suitability Assessments

The baseline survey to assess whether suitable habitat for white-clawed crayfish exists on site.

Crayfish Surveys

A survey designed to identify signs and usage of a site by white-clawed crayfish.

Advice

Contact our experienced Ecologists for advice regarding white-clawed crayfish.