Camilty Wind Farm - Partnerships for Renewables

Camilty Wind Farm - Partnerships for Renewables Camilty Wind Farm - Partnerships for Renewables

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Camilty Wind Farm Index (HSI) developed by Oldham et al. (2000) and as described in ARG UK Advice Note 5 (2010). Each criterion is scored according to its suitability and the resulting HSI scores, which are between 0 and 1 3 , provide an indication as to the likelihood of a pond’s potential to support great crested newts. In general, ponds with high scores are more likely to support great crested newts than those with low scores. UK Protected Species Water Vole (Arvicola aquaticus) 11.2.30 Water vole surveys were undertaken on 23 April 2012 within the protected mammal survey area (Figure 11.1). 11.2.31 Field signs of water vole were searched for using standard methodology, as described in Strachan and Moorhouse (2010), in areas of potential water vole habitat, e.g. watercourses. Badger (Meles meles) 11.2.32 Badger surveys were carried out on 4 May 2012 within all accessible areas of suitable habitat (e.g. woodland, scrub and field margins) within the protected mammal survey area (Figure 11.1). 11.2.33 Badger field signs were searched for systematically within these areas. Field signs of badgers are described in Neal and Cheeseman (1996), Bang and Dahlstrøm (2001) and SNH (2001). Reptiles 11.2.34 The Extended Phase 1 Habitat Survey considered reptile habitat potential in the application site and 250 m buffer. Although no targeted surveys for these species groups were undertaken, surveyors were instructed to record all incidental observations during other surveys. Limitations of Assessment 11.2.35 The Extended Phase 1 Habitat Survey was conducted on 4 October 2011 which is relatively late in the season and when most flowering plants are dying back. As such, many plant species only displayed a limited presence of key identifying features such as leaves or flowers. However, the timing of the survey was sufficient for enabling the identification of the dominant habitat types within the survey area (one of the main aims of the survey), and consequently these timings are not considered to have posed a significant constraint to the objectives of the survey. 11.2.36 The baseline ecological surveys used to identify relevant Valued Ecological Receptors (VERs) and to inform the impact assessment are considered to be of an appropriate level of detail to allow the undertaking of a robust assessment. All seasonally dependent surveys were undertaken at appropriate times of the year. 2 Bing Maps website (www.bing.com/maps). 3 HSI scores are calculated as the geometric mean of the ten individual habitat suitability scores. March 2013 11-9 ES Chapter 11 Terrestrial Ecology Copyright Partnerships for Renewables Development Co. Ltd 2013 ©

Camilty Wind Farm The Assessment Process Valued Ecological Receptors (VERs) 11.2.37 This section details how the significance of effects on ecological receptors is assessed. This is a staged process based on the IEEM guidelines (IEEM 2006). Although these guidelines do not provide a matrix to aid the determination of effect significance, a standard matrix designed for this purpose has been produced by RPS and is presented in Table 11.5. This is for reasons of clarity and does not prevent the use of the 2006 guidelines to determine significance through reasoned argument. 11.2.38 The choice of VERs for the site is described in the Evaluation of VERs section (Section 11.5) and in consideration of the baseline conditions. Evaluating Biodiversity Assets 11.2.39 Determining the sensitivity of ecological receptors within the study area is undertaken in a systematic way using criteria that determine their significance. The term used for the flora and fauna of ecological importance that are affected at the site is ‘Valued Ecological Receptor’. The approach to determining the nature conservation level of each ecological receptor is outlined in Table 11.3. 11.2.40 In accordance with the IEEM guidelines (2006), the value of habitats is also measured against published selection criteria. These include size (extent), diversity, naturalness, rarity, fragility, recorded history, position in an ecological or geographical unit, current condition and potential value. 11.2.41 When assigning a level of value to a species or habitat, its distribution and status, including a consideration of trends based on available historical records, are considered. Rarity is considered because of its relationship with threat and vulnerability, although rarity in itself is not necessarily an indicator of value. A species that is rare and declining will be assigned a higher level of importance than one that is rare but known to be stable. Table 11.3 Approach to Evaluating Ecological Receptor Sensitivity Conservation Sensitivity High Geographic Frame of Reference International National Examples Habitats or species that form part of the cited interest within an internationally protected site, such as those designated under the Habitats Directive (e.g. SACs) or other international convention (e.g. Ramsar site). A feature (e.g. habitat or population) which is either unique or sufficiently unusual to be considered as being one of the highest quality examples in an international / national context, such that the site is likely to be designated as a site of European importance (e.g. SAC). Habitats or species that form part of the cited interest within a nationally designated site, such as a SSSI, or a National Nature Reserve (NNR). A feature (e.g. habitat or population) which is either unique or sufficiently unusual to be considered as being one of the highest quality examples in a national / regional context for which the site could potentially be designated as a SSSI. March 2013 11-10 ES Chapter 11 Terrestrial Ecology Copyright Partnerships for Renewables Development Co. Ltd 2013 ©

<strong>Camilty</strong> <strong>Wind</strong> <strong>Farm</strong><br />

The Assessment Process<br />

Valued Ecological Receptors (VERs)<br />

11.2.37 This section details how the significance of effects on ecological receptors is assessed. This<br />

is a staged process based on the IEEM guidelines (IEEM 2006). Although these guidelines<br />

do not provide a matrix to aid the determination of effect significance, a standard matrix<br />

designed <strong>for</strong> this purpose has been produced by RPS and is presented in Table 11.5. This<br />

is <strong>for</strong> reasons of clarity and does not prevent the use of the 2006 guidelines to determine<br />

significance through reasoned argument.<br />

11.2.38 The choice of VERs <strong>for</strong> the site is described in the Evaluation of VERs section (Section 11.5)<br />

and in consideration of the baseline conditions.<br />

Evaluating Biodiversity Assets<br />

11.2.39 Determining the sensitivity of ecological receptors within the study area is undertaken in a<br />

systematic way using criteria that determine their significance. The term used <strong>for</strong> the flora<br />

and fauna of ecological importance that are affected at the site is ‘Valued Ecological<br />

Receptor’. The approach to determining the nature conservation level of each ecological<br />

receptor is outlined in Table 11.3.<br />

11.2.40 In accordance with the IEEM guidelines (2006), the value of habitats is also measured<br />

against published selection criteria. These include size (extent), diversity, naturalness, rarity,<br />

fragility, recorded history, position in an ecological or geographical unit, current condition and<br />

potential value.<br />

11.2.41 When assigning a level of value to a species or habitat, its distribution and status, including a<br />

consideration of trends based on available historical records, are considered. Rarity is<br />

considered because of its relationship with threat and vulnerability, although rarity in itself is<br />

not necessarily an indicator of value. A species that is rare and declining will be assigned a<br />

higher level of importance than one that is rare but known to be stable.<br />

Table 11.3 Approach to Evaluating Ecological Receptor Sensitivity<br />

Conservation<br />

Sensitivity<br />

High<br />

Geographic<br />

Frame of<br />

Reference<br />

International<br />

National<br />

Examples<br />

Habitats or species that <strong>for</strong>m part of the cited interest within an<br />

internationally protected site, such as those designated under the<br />

Habitats Directive (e.g. SACs) or other international convention (e.g.<br />

Ramsar site).<br />

A feature (e.g. habitat or population) which is either unique or<br />

sufficiently unusual to be considered as being one of the highest<br />

quality examples in an international / national context, such that the<br />

site is likely to be designated as a site of European importance (e.g.<br />

SAC).<br />

Habitats or species that <strong>for</strong>m part of the cited interest within a<br />

nationally designated site, such as a SSSI, or a National Nature<br />

Reserve (NNR).<br />

A feature (e.g. habitat or population) which is either unique or<br />

sufficiently unusual to be considered as being one of the highest<br />

quality examples in a national / regional context <strong>for</strong> which the site<br />

could potentially be designated as a SSSI.<br />

March 2013 11-10 ES Chapter 11<br />

Terrestrial Ecology<br />

Copyright <strong>Partnerships</strong> <strong>for</strong> <strong>Renewables</strong> Development Co. Ltd 2013 ©

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