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1.1 Background Data Search This ecological background data search is a desk-based study for records of internationally, nationally and locally important species and sites within 2 km (extending to 5 km for bats) of the Preferred Onshore Cable Corridor and Converter Station Refined Area of Search for the East Anglia ONE project. This document forms Appendix 24.1 to Volume 3, Chapter 24: Ecology and Ornithology of the Environmental Statement.
This information can identify potential constraints to developments at an early stage and can be used in the assessment of the significance and magnitude of potential ecological impacts.
Background data searches provide valuable information for assessment, but have some limitations.
For example, the reliability of biological record archives is unknown
because factors such as recorder expertise, accuracy of species identification and accuracy of recorded location cannot be verified. It is important to note that the records do not provide a comprehensive list of all species in the search area. A lack of records for a defined geographical area does not necessarily mean that there is a lack of species; the area may simply be under-recorded.
1.2 Structure of the Report
The remainder of the report is set out as follows: • Section 2 describes the methodology of a background data search, including initial research information, organisations contacted for background data, and selection criteria for the information that was requested;
• Section 3 presents summaries of the data received and researched; • Section 4 lists the references used in the report;
• Section 5 is an appendix containing details of designated sites within a search area;
• Section 6 is an appendix listing notable species within a search area; and
• Section 7 is an appendix containing descriptions of protected species legislation and lists abbreviations used in this report.