A fp7 Project: Management and Monitoring of Deep-sea Fisheries and Stocks wp2 – Template for Case Study Reports Case study 2 demersal deep-water mixed fishery Pascal Lorance, Ifremer, Nantes (coord.)

Population trends: U unknown, D decreasing ,S stable , I increasing

The OSPAR commission listed the Threatened and/or Declining Species and Habitats in the OSPAR area (OSPAR List of Threatened and/or Declining Species and Habitats (Reference Number: 2008-6). The list includes invertebrates, birds, fish, reptiles, mammals and habitats. The listed invertebrates are coastal and are not impacted by deep-water fisheries and they are therefore not given here. A number of seabird are liste das endangered (Table 4.15.10b), none is known to be impacted by the demersal deep-water mixed fishery. Deep-water trawl fisheries are not none to have significant negative impact on threatened seabird, the situation is different with longlines fisheries where accidental catches of seabirds may occur and have significant impact (Nel et al. 2002; Arnold et al. 2006) although mitigation devices exist (Ryan and Watkins 2002).

The OSPAR Regions are:

• 
  I - the Arctic: the OSPAR maritime area north of latitude 62°N, but also including Iceland and the Færoes;
  
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  II - the Greater North Sea: the North Sea, the English Channel, the Skagerrak and the Kattegat to the limits of the OSPAR maritime area, bounded on the north by latitude 62°N, on the west by longitude 5°W and the east coast of Great Britain, and on the south by latitude 48°N;
  
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  III - the Celtic Seas: the area bounded by, on the east, longitude 5°W and the west coast of Great Britain and on the west by the 200 metre isobath (depth contour) to the west of 6°W along the west coasts of Scotland and Ireland;
  
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  IV - the Bay of Biscay/Golfe de Gascogne and Iberian coasts: the area south of latitude 48°N, east of 11°W and north of latitude 36°N (the southern boundary of the OSPAR maritime area);
  
• 
  V - the Wider Atlantic: the remainder of the OSPAR maritime area
  

The OPSAR list of threatened fish species include a number a deep-water species (Table 4.15.10c), those, which have been caught by deep-water fishing and that occur in region I and V where the demersal deep-water mixed fishery operates are highlighted in yellow.

(1) Centrophorus granulosus does not occur to the North of the Bay of Biscay) and is therefore not caught by the demersal deep-water mixed fishery

The OPSAR list of threatened marine mammals and reptile does not include species known to be caught by the demersal deep-water mixed fishery (Table 4.15.10d). Sea turtle rarely occur to the North of 50°North and large marine mammals are not caught in trawls.
Table 4.15.10d. Marine reptiles and mammalshabitats threatened or declining according to OSPAR.

Scientific name	Common name	OSPAR Regions where the species occurs	OSPAR Regions where the species is under threat and/or in decline
REPTILES
Caretta caretta	Loggerhead turtle	IV, V	All where it occurs
Dermochelys coriacea	Leatherback turtle	All	All where it occurs
MAMMALS
Balaena mysticetus	Bowhead whale	I	All where it occurs
Balaenoptera musculus	Blue whale	All	All where it occurs
Eubalaena glacialis	Northern right whale	All	All where it occurs
Phocoena phocoena	Harbour porpoise	All	II, III