scottish seamounts - masts
DESCRIPTION
Presentation by Dr Lea-Anne Henry at the 2nd Annual Science Meeting of the Marine Alliance for Science and Technology Scotland.TRANSCRIPT
An offshore resource of biological diversity, ecosystem processes and services
Lea-Anne Henry, Heriot-Watt UniversityPeter Chaniotis, Joint Nature Conservation CommitteeJ. Murray Roberts, Heriot-Watt University
Scottish seamounts
www.cmbb.hw.ac.uk
Scottish seamounts OSPAR list of threatened and/or declining species and
habitats
Rosemary Bank
Anton Dohrn
Hebrides Terrace
RockallTrough
1. Do components support Priority Marine Features (PMFs)?2. Does one component enhance another?
Ecosystem ‘synergies’
Biophysical
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)
Roberts et al. 1974; Xing & Davies 1998; Burrows & Thorpe 1999; New & Smythe-Wright 2001; Hall & Davies 2005; Neat et al. 2008
Biophysical
Coral gardens (AD/all?)
Orange roughy (all)
Atlantic white-sided dolphin (RB)
JNCC
JNCC
CRRU
hydrodynamic control of food
accelerated current speeds
retention mechanisms
Embling 2007; ICES 2007
Benthos
JNCC/JC073
High diversity/lack of endemism
Jacobs et al. 2006; Howell et al. 2010
BenthosCold-water coral reefs
JNCC/JC073
BenthosDeep-sea sponge aggregations
JNCC/JC073
BenthosCoral gardens
JNCC/JC073
BenthosLeafscale gulper shark
Oceanlab
Gravid sharks caught with corals: poss. nursery? (RB)
Orange roughy
JNCC
Reefs important to life history (all)
Blue ling
NMS
Spawning habitat (RB)
Grehan et al. 2004; DEFRA 2007; Large et al. 2010
Fish 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
FishBlue whiting
Blue ling
NMS
Fisheries.no
Long-finned pilot whale
Oceanlab
Sowerby’s beaked whale
CRRU
ICES 2007; Spitz et al. 2011
Marine Mammals
Topographic interactions are key
Migration route to FSC
Mating/calving MPA network and
conservation ‘corridors’
Evans 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
Faroe-Shetland Channel
RB
AD
HT
Rockall Trough
Conservation prioritiese.g. Taranto et al. 2012(PLoS One)
Thank you 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