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Bat Mitigation covers(3884) - Warwickshire Bat Group

Bat Mitigation guidelines working today for nature tomorrow Bat Mitigation guidelines Version: January 2004. A. J. Mitchell-Jones ISBN 1 85716 781 3. English Nature 2004. Key messages for developers Bats and their roosts are protected by law because all species have declined and some are threatened or endangered. There are 16 species of bats in England, each with its own lifestyle and habitat requirements. They use a wide variety of roosts, including buildings of all sorts, trees and underground places. Many bat roosts are used only seasonally as bats have different roosting requirements at different times of the year. During the summer, females of all species gather in colonies to give birth and rear their young; these maternity roosts are often in places warmed by the sun.

2 Bat mitigation guidelines, Jan 2004 Key messages for developers • Bats and their roosts are protected by law because all species have declined and some are threatened or endangered.

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Transcription of Bat Mitigation covers(3884) - Warwickshire Bat Group

1 Bat Mitigation guidelines working today for nature tomorrow Bat Mitigation guidelines Version: January 2004. A. J. Mitchell-Jones ISBN 1 85716 781 3. English Nature 2004. Key messages for developers Bats and their roosts are protected by law because all species have declined and some are threatened or endangered. There are 16 species of bats in England, each with its own lifestyle and habitat requirements. They use a wide variety of roosts, including buildings of all sorts, trees and underground places. Many bat roosts are used only seasonally as bats have different roosting requirements at different times of the year. During the summer, females of all species gather in colonies to give birth and rear their young; these maternity roosts are often in places warmed by the sun.

2 During the winter bats hibernate, often in places that are sheltered from extremes of temperature. When planning a development it is advisable to check for the presence of bats as early as possible so that any planning and licensing issues can be addressed before resources are committed. Planning authorities are required to take account of the presence of protected species, including bats, when considering applications for planning permission and may refuse applications on the grounds of adverse effects on these species or if an assessment of the impact of the development on protected species is inadequate. Planning conditions or agreements may be used to ensure the conservation status of protected species is maintained.

3 In some circumstances, licences are available from Defra to permit actions affecting bats or their roosts that would normally be prohibited by law. Licences are available for actions that are to preserve public health or safety or for imperative reasons of overriding public interest. The applicant must demonstrate that there is no satisfactory alternative and that the action will not adversely affect the favourable conservation status of the bats. Mitigation to reduce or compensate for any impact of development is likely to be a condition of the licence and must be proportionate to the impact. Mitigation may require particular timing of operations, protection of existing roosts or the creation of new roosts to replace ones being lost.

4 In some cases, a considerable period of time may be required to carry out this work. Monitoring of the effect of the Mitigation is usually required. The protected species legislation applies independently of planning permission, so licences may be necessary for operations that affect bats but do not require planning permission. English Nature strongly advises developers to seek the services of a professional environmental consultant with appropriate experience when contemplating a development proposal that would affect bats or their roosts. This document gives generic technical advice on assessing impacts and developing Mitigation plans.

5 It does not give a comprehensive explanation of the legislation and developers may wish to seek their own legal advice. 2 Bat Mitigation guidelines , Jan 2004. Figure 1 Main steps involved in ensuring that bat issues are properly considered in developments requiring planning permission DEVELOPMENT PROPOSAL. USE EXISTING INFORMATION TO. ASSESS PROBABILITY OF BATS BEING. PRESENT. SEE 4. & 5. PRESENT OR ABSENT OR HIGHLY. LIKELY TO BE UNLIKELY TO BE. PRESENT PRESENT. COMMISSION DESK/FIELD CONTINUE WITH DEVELOPMENT; CONSULT. SURVEY BY ECOLOGICAL NO EVIDENCE OF ENGLISH NATURE/DEFRA IF BATS. CONSULTANT. SEE 5. BATS DESPITE DISCOVERED DURING WORKS.

6 SEE ADEQUATE. EVIDENCE SURVEY. OF USE. BY BATS. ASSESS IMPACTS, PLAN. Mitigation (SEE 6., 7. & 8.). AND ADDRESS THE THREE KEY. LICENCE CRITERIA: ENGLISH NATURE AREA. - PURPOSE TEAMS PROVIDE GENERIC. - ALTERNATIVES ADVICE ON SURVEYS, - EFFECT ON FAVOURABLE IMPACTS AND Mitigation . CONSERVATION STATUS. REJECT THE PROPOSAL. UNLESS ALL CRITERIA ARE ENGLISH NATURE PROVIDES. MET. SEE FOR DETAILS SITE-SPECIFIC ADVICE TO. LPA AND Defra LICENCE. GRANTED DEVELOPMENT. SUBMIT PLANNING SUBMIT LICENCE. APPLICATION (INCLUDING APPLICATION TO PROCEEDS, WITH. Mitigation PLAN, SEE 10.) TO DEFRA Mitigation . LOCAL PLANNING AUTHORITY. PLANNING. PLANNING PERMISSION Defra MINDED TO.

7 PERMISSION GRANTED REFUSE LICENCE. REFUSED. REVISE & REVISE &. RESUBMIT, RESUBMIT, OR. APPEAL, OR ABANDON. ABANDON. Bat Mitigation guidelines , Jan 2004 3. Contents 1 Introduction .. 7. Background .. 7. Conservation status of 7. Legal status and its implications for developers .. 7. Development, Mitigation and 8. Responsibility for achieving successful 8. 2 Legislation and 10. 10. Exceptions and 10. When is a licence required? .. 12. Interpretation and enforcement .. 12. Other legislation .. 13. 3 Roles and 14. Introduction .. 14. English 14. The Department for Environment, Food and Rural Affairs .. 14. Office of the Deputy Prime 15.

8 Developers and environmental 15. Local Planning 15. Other organisations .. 16. 4 An introduction to bats .. 17. General .. 17. Roost 18. Habitat 20. 5 Survey objectives, methods and standards .. 21. The importance of a good 21. Some general points on surveys .. 21. Setting survey 23. Survey 23. Desk study .. 24. Field survey methods .. 24. Inspection of buildings or other 24. Inspection of trees .. 26. Use of bat detectors .. 26. Netting and harp-trapping .. 27. Radiotracking .. 27. Timing of 28. Survey standards .. 29. Presence/absence 29. Extent and pattern of usage .. 31. Interpreting and evaluating survey results .. 31. Low numbers and absence.

9 31. Site, colony or population size class 32. Factors influencing survey 32. Site status 33. 4 Bat Mitigation guidelines , Jan 2004. Sub-optimal 33. 6 Predicting the impact of 34. Introduction .. 34. Major types of impact and their effects on populations .. 34. Short-term impacts: 34. Long-term impacts: Roost modification .. 34. Long-term impacts: Roost 35. Long-term impacts: Fragmentation and isolation .. 35. Post-development interference impacts .. 35. Temporal and spatial considerations .. 35. Poor data situations and last-minute' 36. Summarising the scale of site level 36. 7 Planning Mitigation and compensation .. 38. Why mitigate?

10 38. Key principles of 38. Main components of Mitigation .. 41. 8 Mitigation and compensation methods .. 42. Introduction .. 42. Avoidance of disturbance, killing and injury .. 42. Remedial timber treatment .. 43. Avoiding damage to existing roosts .. 44. Incorporating existing roosts into refurbished 44. Roost size .. 44. Roost entrances .. 45. Incorporating new roosts into 46. Providing new 46. Bat boxes .. 46. Bat houses or bat barns'.. 48. Post-development site maintenance and population 53. Site maintenance .. 53. Population and usage 53. 9 Model examples .. 55. Introduction .. 55. Case Study 1: Building 56. Summary .. 56. Background.


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