FOUR survey and one outlier which is also from the East Anglia THREE / FOUR survey (Figure 10.6).


86. These groups are described in the East Anglia Zone survey report (Appendix 10.2) as


 Group E: Brittlestars (ophuroidea), ribbon worms (nemertea) and the bristleworm Spiophanes bombyx;


 Group H: S. bombyx, the catworm Nephtys cirrosa, necklace shell Polinices (Euspira) pulchellus and the bristleworm Scoloplos armiger; and


 Group J: N. cirrosa, S. bombyx and nemertea. 87. 88. 89.


And these correspond to groups Q, N and M respectively in Table 10.11 and Figure 10.6


These groups are all closely related with overlap of characterising fauna in many of the faunal groups.


The most common community within the East Anglia THREE site is N (equivalent to group H in the ZEA report Appendix 10.2) and was identified at 29 of the 43 sample stations (Table 10.11).


90.


In addition to the grab samples used for the sea bed characterisation a further 77 samples were included in the East Anglia Zone surveys. These stations were targeted towards features of interest as identified using the Geophysical survey data (see Appendix 10.2 for further detail) to provide EAOW with robust information on potential Annex I habitats in the form of either Mytilus mussel beds or Sabellaria reefs.


91.


Five of these samples (Figure 10.7) were targeted on a feature of interest in the East Anglia THREE site. When included in the multivatriate analysis all fitted with the existing groups E and H, which are equivalent to Q and N in Table 10.11.


10.5.2.3 Infaunal communities in the Offshore Cable Corridor 92. Many of the same species groups dominate the infaunal communities within the offshore cable corridor as the East Anglia Zone (Diagram 10.5). Polychaetes are the most numerous group followed by Bivalvia, Malacostraca Ophiuroidea, Echinoidea and Nemertea, albeit in a slightly different order. Bivalves are more dominant in the offshore cable corridor than in the East Anglia Zone.


93.


An average of 56.7 individuals per sample were identified across the offshore able corridor, which is below the average of 67.5 individuals across the East Anglia Zone,


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 1 Introduction Page 42


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