The renovation of residential properties often involves various considerations, including ecological factors. This case study focuses on the ecological survey conducted during the renovation of a house that was identified as a potential bat roost. The integration of ecology surveys into renovation projects helps ensure the conservation of wildlife habitats, such as bat roosts, while meeting the needs of homeowners.
Background: The house in question, located in a suburban area, was scheduled for renovation to meet modern standards. An initial bat scoping survey found bat droppings in the loft suggesting the presence of bats roost and prompting the need for an in-depth ecology survey to evaluate the impact of the renovation on the bat roost.
Objectives:
- Identify bat species present in the roost.
- Assess the roost’s significance for bat conservation.
- Develop recommendations for renovation practices that minimize disturbance to the bat population.
Methodology:
- Bat scoping survey: A licenced bat worker from Crossman Ecology conducted an initial assessment to confirm presence or absence of bats. The survey identified bat droppings in the loft. This involved visual observations at dusk, the use of ultrasonic detectors, and a thorough
- Bat activity surveys: Crossman Ecology undertook an appropriate and proportionate number of bat surveys to identify the species of bat and how the bats were using the house. This step provided crucial information about the diversity of bat species utilising the roost. Crossman
Results: The survey confirmed the presence of two bat species – the Common Pipistrelle (Pipistrellus pipistrellus) and the Soprano Pipistrelle (Pipistrellus pygmaeus). The roost was found to be significant for both species, supporting a breeding colony of Common Pipistrelles.
Recommendations:
- Avoidance Measures: Renovation activities should be scheduled outside the bat maternity season (typically May to September) to minimise disturbance to breeding colonies.
- Roost Enhancement: Implement measures to enhance the bat roost, such as installing bat boxes in nearby trees or on the renovated property to provide alternative roosting sites.
Conclusion: Integrating ecology surveys into house renovation projects, particularly when bat roosts are identified, is essential for balancing human needs with ecological conservation. By following the recommendations provided, the renovation project successfully minimised disturbance to the bat roost, contributing to the long-term conservation of local bat populations and maintaining the ecological balance in the area. Crucially, the work facilitated the development so that there were no delays and minimal constraints on site.