11.3 Scope
11.3.1 Study Area 5.
The principal study area for the assessment of fish and shellfish ecology is shown in Figure 14.1. The proposed East Anglia THREE project is located within International Council for the Exploration of the Sea (ICES) Division IVc (Southern North Sea). Pressure stocks1 are managed by ICES division and quota is also allocated at this scale. Both commercial fisheries data and data gathered from various national and international fish surveys are recorded, collated and analysed by ICES rectangles within each division. ICES rectangles are the smallest spatial unit available for the collation of fisheries data and have therefore been used to define the study area for the proposed East Anglia THREE project. The analysis areas are based on the following ICES rectangles:
• Windfarm (East Anglia THREE site) Analysis Area - ICES rectangle 34F2; • •
Offshore Cable Analysis Area - ICES rectangle 33F2; and Inshore Cable Analysis Area - ICES rectangle 33F1.
6.
A small percentage of the proposed East Anglia THREE project is located outside these analysis areas. The north-eastern corner of the East Anglia THREE site is located within ICES rectangle 34F3 and a small section of the offshore cable corridor, close to the landfall location, is located in ICES rectangle 32F1. Due to the small proportion of these rectangles occupied by the proposed East Anglia THREE project, annual and seasonal variation have not been described at the scale of individual ICES rectangles.
7. Where appropriate, broader geographic areas have been used for the purposes of the fish and shellfish environmental baseline and impact assessment. This has particular relevance to life history aspects such as the distribution of spawning grounds and migration.
11.3.2 Worst Case 8.
A realistic ‘worst case’ scenario for the potential impacts of the proposed East Anglia THREE project on fish and shellfish ecology has been identified by using the project design envelope parameters described in Chapter 5 Description of Development. The design parameters which constitute the worst case scenario for fish and shellfish ecology are presented by impact in Table 11.2.
1 Stocks identified as under pressure from fishing mortality (e.g. overfishing) and therefore requiring management at the EU level through a system of Total Allowable Catches (TACs) and Quota
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 11 Fish and Shellfish Page 11
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