Crossing borders – the spread of the lesser horseshoe bat between Thuringia and Upper Franconia

Challenge 

The rare lesser horseshoe bat population has stabilized in Thuringia in recent years, with sightings in Upper Franconia in the European Green Belt area. Once thought extinct in northern Upper Franconia, their return is vital for genetic exchange and population stability. To aid reintroduction, monitoring, public education, and habitat creation including steppingstones are key measures for species protection and expansion.

Objective

We aim to optimize structures along the European Green Belt for the lesser horseshoe bat and other bat species. By project’s end, knowledge of their distribution will have grown. Our approach: 1) Field research with volunteers to survey 75% of key sites, 2) Public outreach to inform municipalities on bat conservation, and 3) Structural measures to enhance habitats, ensuring protection and expansion.

Approach

The project’s goals will be achieved through:

1. Field Research: Volunteers from both federal states collaborate to exchange data, with support in equipment and expertise. Cross-border data collection aids coordinated actions.
2. Public Relations: Events inform decision-makers, with a final brochure for municipalities. At least five events raise youth awareness of bats and the Green Belt.
3. Structural Measures: Targeted building modifications, like attic darkening and winter quarter protection, improve habitats with measurable long-term effects.

Expected Results

At the end of the project the following results will have been achieved:

1) Field research with volunteers to survey 75% of key sites.

2) Public outreach to inform municipalities on bat conservation and capacity building in conservation measures.

3) Structural measures to enhance habitats, ensuring protection and expansion in the European Green Belt area.

4) Collected data will guide conservation efforts and structural measures for the lesser horseshoe bat. Additionally, collaboration between conservation groups will be strengthened for future bat protection projects.