Bat Surveys and Mitigation Monitoring
17th May 2015
As part of the development of the Aberdeen Western Peripheral Route over two hundred bat boxes were erected as part of Scheme wide mitigation to offset impacts to the local bat population.
To comply with the Environmental Statement, Practecology was appointed to undertake a survey of all bat boxes to determine the species present and inform the construction team of any constraints. Practecology has tree climbers qualified in aerial assessment and rescue techniques (NPTC 206 and 306) who can undertake bat box inspections.
In addition it was also a requirement to assess trees for their potential to support bats before they were felled and where this was not possible due to the size of the canopy, trees were felled under the supervision of a licensed bat worker and inspected on the ground.
In 2014, Practecology with the support of a licensed bat worker, climbed and inspected 238 bat boxes and assessed over 30 trees for the presence of bats. Additionally, Practecology was requested to determine the presence of bats in a custom built mitigation structure, in buildings which were to be demolished and complete transects surveys to assess the value of some field boundaries which were to be affected by the Scheme.
Interestingly a large proportion of the bat boxes assessed showed evidence of use by bats although this was dependent on the box type.