HABITAT SURVEYS

EWS is a less in-depth survey in comparison to a PEA designed for smaller sites. This method involves an analytical 'walkover' of the site, recording dominant plant species, habitats and animal species of 'ecological value'. The data gathered on site informs the report recommendations of any future ecological surveys required in line with national and local planning regulations.

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PEA and EcIA both typically comprise a desk study and an extended Phase-1 habitat survey, but their purposes are slightly different.

A PEA is often the first stage in evaluating a site's ecological value. Where protected or notable species or habitats are recorded, or the potential presence of protected species is identified, recommendations are made for mitigation and for further surveys where necessary.

An EcIA is used to identify, quantify and evaluate the potential effects of a development or other proposed works on habitats, species and ecosystems within the impacted area. Increasingly, this is a prerequisite for larger developments, either independently or as part of a wider Environmental Impact Assessment (EIA) or Environmental Statement (ES).

PHASE 1 HABITAT SURVEYS (P1HS), NATIONAL VEGETATION CLASSIFICATION SURVEYS (NVC) & BOTANICAL SURVEYS

P1HS: This type of survey follows a standard methodology and involves systematically walking over a site and classifying each parcel of land on the basis of vegetation into one of over 90 habitats. Data is recorded on the structure and composition of habitats and a botanical species list is also recorded. Target notes are used to record any habitats or features of particular interest and any sightings or evidence of protected or notable flora or fauna. 

P1HS and the subsequent report is normally only suitable for small to medium-scale developments and similar schemes.

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NVC / Botanical Surveys: 

The National Vegetation Classification (NVC) is a standardised classification developed for

plant communities in the UK.

It uses the types of plant species present and the relative abundance of each to classify the habitat, which is then represented on a map.

This type of survey is sometimes required for larger infrastructure projects or housing developments.

NVC surveys can only be carried out during the plant growing season (April to September inclusively).

Methodology: Samples are recorded from a number of quadrats, deployed across each different habitat type.

All plant species and their relative abundance within each habitat will be recorded.

The data is used to classify each habitat within the site into their NVC communities.

Following the Survey a report will be produced detailing the survey results  and an evaluation of any potential ecological issues which may be associated with the site. The report will also include recommendations for any necessary mitigation measures.

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OTHER HABITAT SURVEYS