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Mitigation Case Studies Forum 2017

Tuesday 24th January 2017

Arup - 8 Fitzroy Street, London W1T 4BQ

(proceedings on Twitter using #batmitforum)

The Bat Conservation Trust's Bats and the Built Environment Project, in partnership with Arup ran a one day Mitigation Case Studies Forum on 24th January 2017 at the Arup headquarters in London.

The key aim was to promote the importance of monitoring in ensuring success in mitigation schemes by sharing best practice and lessons learnt. This event focussed on bat mitigation, given that the majority of case studies received were bat related.

As with previous built environment symposia, we were looking for attendance from a wide audience representing a cross section of the industries that may involve mitigation monitoring: ecologists, LPAs, SNCBs, NGOs, developers etc. and we succeeded! This was so we could collect as much feedback and discussion on the issues as possible, to aid us we even used live polling data on the day! 


All case studies listed below were structured to cover:

  • The ecological receptor
  • The predicted impacts
  • The mitigation measures applied
  • The monitoring regime

The main discussion section of the case study emphasised:

  • What worked / went as expected?
  • What didn’t work / was unexpected?
  • What lessons were learnt / did the monitoring reveal?


The chosen case studies were separated into relevant topics during the day (with ample time for networking between sessions), there was also a review at the end of the day of next steps, discussing the upcoming projects and research relating to bat mitigation.

Intro: 9.45am

Key note speaker: 9.50am Dr. Claire Wordley, Conservation Evidence

Session 1 intro. 10.05am

Topic 1 – RESIDENTIAL and PUBLIC BUILDINGS: 10.15 – 11.15 am

Talk 1 - [Dr Charlotte Packman, Wild Frontier Ecology] Mitigation to Reduce the Impact of Bats on Churches

Talk 2 – [Paola Reason, Arcadis] ‘Training’ bats to use a new access point – and humans how to design one

Talk 3 – [Nick Jones, EDP] Bat Cave Linking to Grade II Listed House


BREAK: 11.15am – 11.45am

Topic 2 – OTHER STRUCTURES: 11.45am – 12.45pm

Talk 1 - [Victoria Burrows, ERAP Ltd] Replacement Common Pipistrelle Maternity Roost

Talk 2 – [Rachel Bover, Jacobs] Enhanced Concrete Pipe as Replacement Roost for Horseshoe Bats

Talk 3 – [Dr Stephanie Murphy, Arbeco] Diversion of River Culm to Undertake Demolition of Culvert Containing Daubenton’s Bat Maternity Roost


LUNCH: 12.45pm – 1.45pm

Intro: 1.45pm – Session 2

Topic 3 – ROADS: 1.55 – 2.55pm

Talk 1 – [Chris Kerfoot, Jacobs] Badger and Bat Mitigation Duplex

Talk 2 – [Hattie Spray, WSP & Sam Bower, Balfour Beatty] Lessons Learnt from Monitoring Bat Mitigation on a Road Widening Scheme

Talk 3 – [John Davies, Arcadis] Monitoring the effectiveness of mitigation for horseshoe bats associated with a new road in Wales


BREAK: 2.55pm – 3.15pm

Topic 4 - An international perspective on bat mitigation with the Dutch Mammal Society 3.15pm - 3.40pm [Marcel Schillemans and Eric Jansen]

Topic 5 – Research and upcoming mitigation projects: 3.40 – 4.20pm

Talk 1 – [Lisa Worledge, BCT] European Bat Box database

Talk 2 – [Jan Collins, BCT] Bearing Witness for Wildlife: BCT’s new investigations and mitigation project

Talk 3 - [Paul Lintott, University of Exeter] CIEEM project to review the evidence on mitigation strategies for bats


RECAP and END: 4.20 – 4.30pm

Further information

If you have any questions about the day please contact Jo Ferguson: or 0207 820 7172.





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