The effects of illuminating the roost entrance on the emergence behaviour of Pipistrellus pygmaeus


Material Information

The effects of illuminating the roost entrance on the emergence behaviour of Pipistrellus pygmaeus
Series Title:
Biological Conservation
Downs, N.C.
Beaton, V.
Guest, J.
Polanski, J.
Robinson, S.L.
Racey, P.A.
Publication Date:


Subjects / Keywords:
Pipistrelle, Pipistrellus Pygmaeus ( local )
Light Intensity ( local )
Light Colour ( local )
Roost Emergence ( local )
Bats ( local )
serial ( sobekcm )


In an attempt to increase the accuracy of roost emergence counts for a monitoring programme, the exits of two Pipistrellus pygmaeus roosts were illuminated with light of different colours and intensities. Light intensityaffected bat emergence more than light colour. At one roost there was no significant difference in the bat emergence pattern between when the roost exit received no illumination and when it was illuminated with red light. The use of the latter is proposed to increase the accuracy of bat roost emergence counts.
Original Version:
Biological Conservation, Vol. 111, no. 2 (2003-06).

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