Scottish Seamounts - MASTS

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Presentation by Dr Lea-Anne Henry at the 2nd Annual Science Meeting of the Marine Alliance for Science and Technology Scotland.

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Scottish Seamounts - MASTS

  1. 1. An offshore resource of biologicaldiversity, ecosystem processes and servicesLea-Anne Henry, Heriot-Watt UniversityPeter Chaniotis, Joint Nature Conservation CommitteeJ. Murray Roberts, Heriot-Watt University www.cmbb.hw.ac.uk
  2. 2.  OSPAR list of threatened and/or declining species and habitats Rosemary Bank Anton Dohrn Rockall Hebrides Trough Terrace
  3. 3. Biophysical Fish Marine mammals Benthos1. Do components support Priority Marine Features (PMFs)?2. Does one component enhance another?
  4. 4. Roberts et al. 1974; Xing & Davies 1998; Burrows & Thorpe 1999; New & Smythe-Wright 2001; Hall & Davies 2005; Neat et al.2008  Topography & internal waves ↑ surface circulation (AD, HT)  Anti-cyclonic circulation (AD) could ‘focus’ food at the summit  Internal waves and Taylor columns ↑ vertical mixing downstream (AD)  Eddies (AD, RB)  Downwelling (AD)  Current-shaped sedimentary patterns (all)
  5. 5. accelerated current speeds JNCC retention mechanisms Orange roughy (all) Coral gardens (AD/all?) hydrodynamic control of food CRRUJNCCEmbling 2007; ICES 2007 Atlantic white-sided dolphin (RB)
  6. 6. High diversity/lack of endemism JNCC/JC073 Jacobs et al. 2006; Howell et al. 2010
  7. 7. Cold-water coral reefs JNCC/JC073
  8. 8. Deep-sea sponge aggregationsJNCC/JC073
  9. 9. Coral gardens JNCC/JC073
  10. 10. Orange roughy Leafscale gulper shark JNCC Oceanlab Reefs important to life history (all) Gravid sharks caught with corals: poss. nursery? (RB) Blue lingGrehan et al. 2004; DEFRA 2007; Large et al. 2010 NMS Spawning habitat (RB)
  11. 11.  spawning of mesopelagic and PMF fish species ▪ blue whiting, orange roughy, blue ling, mackerel, leafscale gulper shark, others JNCC/ JC073 Changing Oceans Expedition Dransfield et al. 2005; DEFRA 2007; Neat et al. 2008; Howell et al. 2009; ICES 2010; Large et al. 2010
  12. 12. Blue whiting Fisheries.no Sowerby’s beaked whale Blue ling Long-finned pilot whale NMS CRRUICES 2007; Spitz et al. 2011 Oceanlab
  13. 13. Faroe-Shetland Channel  Topographic RB interactions are key  Migration route to AD FSC HT  Mating/calving  MPA network and conservation Rockall ‘corridors’ TroughEvans et al. 1997; Pollock et al. 2000; Charif et al. 2001; Weir et al. 2001; Swift et al. 2002; Hastie et al. 2003; Macleod et al.2003; Reid et al. 2003; Embling 2007; Boisseau et al. 2011; MCR 2011
  14. 14. e.g. Taranto et al. 2012(PLoS One)
  15. 15.  Captain/crew and scientists on board the James Cook Cruise 073 ‘Changing Oceans Expedition’ Holland I crew Richard McLanaghan (MCR) Laura Robson (JNCC) Kerry Howell (Plymouth) ICES WGDEC discussions

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