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The ECN bats protocol (BA)


Protocol file


Site types that use this protocol


There are 15 species of bat, the only flying mammal, which are considered native to Britain where they are ubiquitous predators of insects.  Bats are known to be sensitive to changes in the environment, their numbers having declined significantly during the present century through a combination of loss of habitats, roost sites and food supply, and by increased frequency of disturbance.  Bats are therefore believed to be useful indicators of environmental change.

Species are mapped and their behaviour recorded on transects.


Our field activities


Now that autumn has arrived the ECN fieldwork calendar begins to quieten down. We cease monitoring most terrestrial invertebrates apart from spiders. In rivers and lakes we make the last freshwater invertebrate survey of the year.

See all this month's field measurements...

Wytham in the autumn (fall). Photo: Denise Pallett