Phase 1 habitat survey
This survey technique is used to identify and classify habitats. Phase 1 habitat surveys can be completed throughout the year, but surveys during the spring and summer allow more detailed species lists to be put together which can aid the classification of habitats.
Extended Phase 1 habitat survey
A Phase 1 habitat survey (see above) which is ‘extended’ to include an assessment of a site’s potential to support protected species (such as bats, great crested newts, badgers, reptiles and nesting birds). The findings of an extended phase 1 habitat survey can be used to determine whether further detailed survey is likely to be required (such as further botanical survey (NVC survey) or more detailed protected species survey).
As above, an extended phase 1 survey can be carried out at any time of year although there may sometimes be good reasons to target particular seasons (for example, to help identify the likelihood of bats being present, or to visit and evaluate a pond in advance of the survey period for great crested newts).
National Vegetation Classification (NVC) survey is a detailed botanical survey technique that is required where habitats of ecological value require more in depth evaluation. NVC survey is best carried out during spring and summer months. The optimum period for survey varies depending on the habitat type under consideration, and advice should be sought from an ecologist.