Table 1 Frequency of occurrence, mean abundance and contribution to similarity within the Boxes of the five dominant species in Boxes A, B, C, D, L and M

Box A

63/62

Asterias rubens

100

132

15/24

Liocarcinus holsatus

100

42

13/13

Ophiura albida

94

672

13/18

Astropecten irregularis

94

27

13/13

Pagurus bernhardus

94

5

13/9

Corystes cassivelaunus

85

13

9/8

All species

–

929

Box B

50/52

Pagurus bernhardus

97

8

10/17

Asterias rubens

97

6

10/16

Epizoanthus incrustatus*

96

–

9/–

Astropecten irregularis

88

3

8/10

Anapagurus laevis

87

2

8/10

Neptunea antiqua

82

2

7/8

All species

–

40

Box C

61/62

Astropecten irregularis

100

44

7/14

Asterias rubens

100

7

7/9

Buccinum undatum

100

13

7/9

Pagurus bernhardus

100

13

7/10

Colus gracilis

88

7

5/6

Luidia sarsi

86

7

5/6

All species

–

142

Box D

49/52

Crangon allmanni

98

64

9/22

Anapagurus laevis

95

9

9/15

Pagurus bernhardus

92

8

8/14

Pagurus prideaux

91

10

8/11

Epizoanthus incrustatussp.*

96

–

8/–

Adamsia carciniopados*sp.*

89

–

8/–

All species

–

116

Box L

52/53

Echinus elegans

100

484

8/20

Astropecten irregularis

100

44

8/15

Ascidiellasp.*

100

5

6/–

Anapagurus laevis

97

7

8/9

Pagurus pubescens

90

3

7/7

Thelepus cincinnatus

85

2

6/6

All species

–

602

Box M

63/60

Anapagurus laevis

100

30

5/10

Pagurus pubescens

100

28

5/10

Pagurus prideaux

100

12

5/8

Ascidiella sp.*

100

5

3/–

Adamsia carciniopadus*

98

11

5/–

Suberites ficus*

93

–

5/–

All species

–

177