Water vole surveys

(England, Wales and Scotland only)

Any watercourse within a proposed development site should be assessed for its potential to support water voles. For water vole surveys, the habitat is generally recorded by mapping key features such as bank material, amount and type of marginal vegetation, amount of shading from trees and water depth and width. In addition, signs of water vole occupation and activity are recorded. These include burrows, droppings, runs in vegetation and signs of feeding.

From these two sets of information it is possible to estimate the actual and possible numbers of water voles living along the watercourse. Water vole surveys can be undertaken between mid-April and September. Recently published guidelines specify 2 visits; 1 from Mid-April to June, 1 from July to September.

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Water vole surveys

Thomson Ecology Handbook

This online version of the Thomson Ecology Handbook provides a general overview of current wildlife legislation* and is aimed at helping project managers understand and plan for ecology from the start.

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