Botanical Surveys

National Vegetation Classification and The Legal Requirement

Detailed vegetation surveys may be required where the vegetation communities on a site have been identified as being diverse and hence of ecological value. Typically, more detailed vegetation surveys are carried out using the National Vegetation Classification (NVC) methodology.

The NVC is a standardised method of classifying vegetation communities across the UK and is widely used by conservation organisations to assess vegetation for management and monitoring purposes. The species present within each vegetation community are identified and their abundance is assessed. This allows for the identification of the community to an NVC type. These NVC types are then mapped for a site using GIS (geographic information system). NVC surveys are generally employed on larger development sites, within areas of land subject to habitat management, or at sites of nature conservation.

Hedgerow Surveys

Hedgerow surveys are carried out to assess whether a particular hedgerow is protected under the Hedgerow Regulations 1997. The survey involves an assessment of plant species present within the hedgerows and the presence of historical features. These surveys are generally carried out where a development may result in the removal of a hedgerow which has been assessed as being species-rich during the Preliminary Ecological Appraisal (PEA).

Invasive Species Surveys

ECOSA carry out a range of surveys to assess the presence of non-native invasive species such as Japanese knotweed, Himalayan balsam and giant hogweed. Our surveyors are experienced in identifying these plants and will make recommendations for appropriate control measures.