ICES Advice 2007, Book 7 - Bay of Biscay and Atlantic Iberian Waters

7 BAY OF BISCAY AND IBERIAN SEAS 1

7.1 Ecosystem Overview 1

7.1.1 Ecosystem Components 1

7.1.2 Major environmental influences on ecosystem dynamics 9

7.2 The human impacts on the ecosystem 9

7.2.1 The major effects of fishing on the ecosystem 9

7.2.2 Other effects of human useof the ecosystem 10

7.2.2.1 Impact of oil spills 10

7.2.2.2 Incidental catch of cetaceans 10

7.3 Assessments and Advice 15

7.3.1 Assessment and advice regarding protection of biota and habitats 15

7.3.2 Assessments and advice regarding fisheries 15

7.4 Stock summaries. 25

7.4.1 Hake-Southern stock (Division VIIIc and IXa excluding the Gulf of Cadiz) 25

7.4.2 Megrim (L. boscii and L. whiffiagonis) in Divisions VIIIc and IXa 37

7.4.3 Anglerfish in Divisions VIIIc and IXa (L. piscatorius and L. budegassa) 51

7.4.4 Southern horse mackerel (Trachurus trachurus) (Division IXa) 59

7.4.5 Sardine in Division VIIIc and IXa 64

7.4.6 Anchovy in Subarea VIII (Bay of Biscay) 72

7.4.7 Anchovy in Division IXa 79

7.4.8-7.4.9 Nephrops Advice – Please refer to ICES Advice 2006 – Book 7. 83

7.4.11 Sole in Divisions VIIIa,b (Bay of Biscay) 84