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Landscape

Brown bat
Leislers bat roost in hollow branch

Landscape Surveys

Bats depend on the landscape for safe travel along linear landscape features to important feeding habitats. Bat Eco Services have the expertise to determine the bat usage of landscape and large matures trees.

All Irish bat species feed on insects and consequently bats are found in high densities where insects are most plentiful. Surveys of hunting bats have shown that waterways and woodland edges are particularly important for bats. To travel between roosting sites and important feeding areas bats will fly along linear features such as hedgerows, treelines, stonewalls and rivers in order to avoid flying across open spaces. Therefore, activities which sever these linear landscape features are likely to have impacts on bats. In addition, large mature trees offer elusive roosting sites for bats in tree cavities, spilt limbs and loose bark. Such important elements of the landscape require assessment in bat surveys.

To understand the bat usage of the landscape is an important component of all bat surveys. Bat Eco Services can provide this information and this is completed using extensive use of acoustic technology to ensure that the appropriate level of information is gathered to meet your bat ecological needs. This is combined with desk-top studies to gather all available information on local bat populations.

Bats are observed during the activity season by the following techniques:

  • Foot-based bat detector surveys of surrounding landscapes
  • Acoustic surveying of commuting routes adjacent to important foraging habitats

Bat Eco Services undertake surveys and guidance from the following documents:

  • The Bat Workers Manual, 3rd Edition 2004,
    (A. J. Mitchell-Jones & A. P. McLeish)
    JNCC.
  • A Conservation Plan for Irish Vesper Bats 2006. (Kate McAney)
    Irish Wildlife Manuals No. 24.
    NPWS, DoEHLG.
  • Bat Mitigation Guidelines for Ireland 2006
    (Conor Kelleher)
    Irish Wildlife Manuals No. 25.
    NPWS, DoEHLG.