Lend Lease RAF Lyneham, Chippenham, Wiltshire Dormouse
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Lend Lease RAF Lyneham, Chippenham, Wiltshire Dormouse Survey Report May 2013 Ropemaker Court, 11-12 Lower Park Row, Bristol BS1 5BN Tel: 0117 925 4393 Email:[email protected] www.wyg.com creative minds safe hands Document Control Project: RAF Lyneham, Chippenham, Wiltshire, Dormouse Survey Client: Lend Lease Job Number: A077957 File Origin: C: \WYG \RAF Lyneham \DIO drafts \Updated following DIO comments \Final send \A077957 Lyneham WiltshireDormouse_v1_DIO draft_Final.doc Document Checking: Prepared by: Sarah Dillon ACIEEM Signed: Consultant Ecologist Checked by: Chris Meddins MCIEEM Signed: Principal Ecologist Verified by: Chris Meddins MCIEEM Signed: Principal Ecologist On behalf of: Claire Wilmer CEnv, Regional Director Issue Date Status 1 26.09.12 DIO draft issue 2 03.10.12 DIO draft issue 3 15.10.12 DIO final issue v1 4 29.05.13 DIO final issue v2 www.wyg.com creative minds safe hands Contents Page Executive Summary .......................................................................................................................... 1 1.0 Introduction......................................................................................................................... 2 1.1 Background ......................................................................................................................... 2 1.2 Site location ......................................................................................................................... 2 1.3 Proposed development ......................................................................................................... 3 1.4 Legislation Applying to Dormice ............................................................................................ 3 2.0 Methods .............................................................................................................................. 4 2.1 The constraints report .......................................................................................................... 4 2.2 Site survey .......................................................................................................................... 4 2.3 Limitations ........................................................................................................................... 5 3.0 Results ................................................................................................................................ 6 3.1 Constraints report ................................................................................................................ 6 3.2 Site survey .......................................................................................................................... 6 4.0 Ecological Constraints and Impacts ....................................................................................... 7 5.0 References .......................................................................................................................... 8 Appendix A: ....................................................................................................................................... Plan 1 – Proposed Development Plan .................................................................................................. Plan 2 – Dormouse Nest Tube Location ............................................................................................... www.wyg.com creative minds safe hands RAF Lyneham, Chippenham Wiltshire: Dormice Survey Executive Summary Contents Summary Site location RAF Lyneham, nr Chippenham, Wiltshire (grid reference SU 005 786) Previous Ecological Development Constraints Report , AMEC, 2012 reports/surveys Reptile Presence / likely Absence Report, WYG, 2012 Great Crested Newt Survey, WYG, 2012 Bat Daytime Assessment, WYG, 2013 Bat Emergence/ Return and Activity Survey , WYG, 2013 WYG Survey Dormouse Survey Report Results No dormouse or obvious signs of dormouse were recorded on the site during the dormouse surveys carried out on site. Additional Survey None required Recommendations Mitigation and None required Enhancement Recommendations Lend Lease A077957 1 29/05/2013 RAF Lyneham, Chippenham Wiltshire: Dormice Survey 1.0 Introduction 1.1 Background WYG was commissioned by Lend Lease in March 2012 to undertake a dormouse survey of land at Royal Air Force (RAF) Lyneham (‘the site’) in Lyneham, near Chippenham, Wiltshire (see Figure 1). It is understood that the base will be converted from an airbase to training facilities. The previous AMEC Ecological Development Constraints Report (2012, ‘the constraints report’) identified the potential for dormice to occur on site, based on the presence of suitable habitat. The aims of the WYG survey work and the subsequent report presented herein were to: • Determine the presence or likely absence of dormice at the site; • Provide an appraisal of the implications created by the potential presence of dormice at the site; • Establish if any potential effects on dormice resulting from the development are permissible; • Ensure that the required level of survey work and information is present to inform a method statement, should one be necessary; and • Provide preliminary advice on mitigation strategies against any adverse affects on local dormouse population(s) which may arise as a result of the proposed development. 1.2 Site location RAF Lyneham covers approximately 460 ha and is located 9 km north-east of Chippenham. The central OS grid reference of the site is SU 005 786. As per the original constraints report by AMEC (2012), the habitat is mainly grassland (approximately half the area), and buildings and hard standing (over one-quarter of the area). The rest of the area consists of landscaping, woodland, bare ground, water bodies and hedgerows (over 7 km in length). At present the buildings are used as a mix of offices, accommodation, and catering, and many are currently unoccupied. The airfield area (i.e. the runways, airport terminal, hangers etc) is not presently in regular Lend Lease A077957 2 29/05/2013 RAF Lyneham, Chippenham Wiltshire: Dormice Survey use as the base is no longer used by aircraft however regular cutting occurs of the majority of airfield grassland. 1.3 Proposed development It is proposed that the RAF will maintain the site, switching the role from an airbase, to a training area. The training will require a mix of outdoor areas (mainly the airfield) and indoor (the main area of building in the north-east of the site). This will also require accommodation, catering buildings, security, etc. Many of these facilities are in place within the buildings currently on site, but some refurbishment may be required (see Plan 1, Appendix A). 1.4 Legislation Applying to Dormice The dormouse is protected under the Wildlife and Countryside Act and the Conservation of Habitats and Species (Amendment) Regulations 2012. Taken together, both levels of protection make it an offence to kill, capture, injure, possess or sell an individual. Furthermore, it is also an offence to deliberately disturb or destroy any site used for breeding by dormice. Additionally the dormouse is a species of high conservation concern nationally and as such is included as a priority species in the UKBAP. Lend Lease A077957 3 29/05/2013 RAF Lyneham, Chippenham Wiltshire: Dormice Survey 2.0 Methods 2.1 The constraints report A report identifying the likely ecological constraints to development was produced by AMEC in 2012. This constraints report identified habitats which could potentially support the dormouse i.e. hedgerows and woodland habitat on or around the boundaries. The report was consulted to provide an overall ecological background for the dormouse survey and to target the survey effort at identified suitable habitat on site. 2.2 Site survey Guidance on dormouse survey is provided in the Dormouse Conservation Handbook (Bright, Morris & Mitchell-Jones, 2006). It is recommended that a standard survey should use at least 50 nest tubes spaced at approximately 20m intervals and an index of probability of detecting dormice presence in each month of the survey season, as detailed in Table 1 below, is used to calculate a survey effort score. For example 50 nest tubes installed in March and left in situ until the end of November would score 25 (the sum of probability index figures for each month) and 100 tubes for the same period would score 50, i.e. double the search effort. A minimum search effort score of at least 20 should indicate a thorough survey. It should be noted that this is a targeted survey of suitable and accessible habitat areas rather than a survey providing comprehensive coverage of the entire woodland area. Table 1: Index of probability of detecting dormice in each month of their active season (Bright, Morris & Mitchell-Jones, 2006). Month Index of Probability April 1 May 4 June 2 July 2 August 5 September 7 October 2 November 2 Lend Lease A077957 4 29/05/2013 RAF Lyneham, Chippenham Wiltshire: Dormice Survey A total of 128 nest tubes were installed on 25 th July 2012, secured to trees or scrub vegetation using gardening wire at a height of 1m – 1.5m above ground level (see Plan 2, Appendix A for nest tube locations). Hedgerows with hazel, hawthorn, blackthorn and scrub along the boundaries of the site and within woodland areas were considered likely to provide the best quality habitat for dormice due to the availability of nesting materials as well as potential food sources such as catkins, nuts, berries and flowering plants. The survey was carried out between September