1 1 INTRODUCTION This paper has been prepared to support a ...

Berücksichtigung von Fledermäusen bei der Straßenplanung
Fachgespräch am 24. Juni 2010 in Köln
Erfahrungen mit dem Fledermausschutz im Zuge von
Straßenbaumaßnahmen im Vereinigten Königreich
Experiences of Dealing with Lesser Horseshoe Bats (Rhinolophus hipposideros / Kleine Hufeisennase)
in Wales, United Kingdom, Len Wyatt, Welsh Assembly Government
Photograph: Excavating
shallow pond. Jacobs
Case Study 2: A465 Heads of Valley Section 1 Abergavenny to Hirwaun
Potential Impact
Context of the project
Context for bats
Description of measure
undertaken
Damage to flight lines between roosting/feeding
areas (construction) and Wildlife Vehicle Collisions
(operation).
Widening of existing road from 2 lanes (single carriageway)
to 4 lanes (dual carriageway). Road above
open to traffic throughout construction period.
Maternity roost of c90 individual bats within 300m of
project. Bats regularly used the existing vehicular underpass
at Hopyard (4.2m high, 3.5m wide, 18.5m
long) – c 120 - 200 individual movements recorded
over one night. Roost believed to be connected to
Natura 2000 site 2km away.
Extension of existing Underpass which was being
used by Lesser Horseshoe Bats, during the construction
period. Extended culvert 2.4m by 2.4m,
with existing culvert total length 67m.
Construction of extension phased to be carried out
during winter seasons when bats not flying and
when other flight paths under the road were not being
altered.
Plastic guide fencing applied to ensure that bats
were able to find the underpass.
Work period between 2006 and 2008.
(see also Case study 3)
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