but the average number of species identified per sample was similar (14.9 and 14.8 respectively).
2% 1% 1% 1% 1% 6% 7% 49% 7% 5%
Polychaeta Bivalvia Malacostraca Ophiuroidea Echinoidea Nemertea Clitellata Nemotoda Anthozoa Gastropoda Other
20%
Diagram 10.5 Infaunal breakdown for the offshore cable corridor (including data from the East Anglia Zone Survey, East Anglia ONE export cable corridor survey and East Anglia THREE / FOUR survey): Number of individuals by class. Where species identification to class is not possible, species are displayed by phylum (for example Nemertea and Nemotoda).
94.
Polychaetes, bivalves and crustaceans of the class Malacostraca dominate the offshore cable corridor in terms of number of species identified which is in line with the pattern observed in the East Anglia Zone. However, in the offshore cable corridor 15 species of Gymnolaemata, a class of bryozoan, were identified making it the fourth most significant category in terms of number of species identified (Diagram10.6).
95.
The Species compositions of the offshore cable corridor differ slightly from that of the East Anglia Zone. Within the dominant class, the polychaete S. spinulosa is far less abundant with 350 individuals found across 25 sample stations. Other polychaetes such as Spiophanes bombyx (573 individuals found across 55 stations) Nephtys cirrosa (157 individuals identified across 67 stations) and Ophelia borealis (188 individuals identified across 88 stations) were more widespread.
96.
The most abundant bivalves which make up almost double the proportion in the offshore cable corridor than they do in the East Anglia Zone (Diagram10.5 and 10.1) were from the family Mytilidae (442 individuals identified across 21 sample stations).
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 1 Introduction Page 43
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