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FRV Clupea 0702C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0702C
Cruise period2002-04-26 — 2002-05-09
StatusCompleted
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
PurposeResearch
ObjectivesTo conduct a 'spring' survey of a suite of sea lochs impacted to varying degrees by nutrient releases from fish farming activity. This survey will form part of a programme of work to assess the potential for eutrophication arising from nutrient 'hotspots' linked to aquaculture. This will be undertaken by measuring the following parameters at multiple stations in each loch:
1. CTD
2. Nutrients and silicates
3. Chlorophyll
4. Phytoplankton
These determinands will be assessed against criteria as defined by the OSPAR Eutrophication Task Group.
Chief scientistMatt Gubbins (Fisheries Research Services Aberdeen Marine Laboratory)
ProjectSurvey of nutrient enhancement effects
Coordinating bodyFRS Marine Laboratory
Cruise reportFRV Clupea 0702C cruise report 0702c.pdf (1.21 MB) 
Ocean/sea areas 
GeneralNorth Sea
Inner Seas off the West Coast of Scotland
Specific12 Lochs: Ewe, Torridon, Snizort Beg, Uig Bay, Kilerivagh, Grimshader, Olna Firth, Aith Voe, Vaila Sound, Sandsound Voe, Swining Voe, Collafirth Voe
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of profiles = 89
Description: 1-6 depth water sampling stations, by 12 bottle rosette sampler
CTD stationsQuantity: number of profiles = 89
Description: Sealogger CTD profiles
Chemical oceanography 
PhosphateQuantity: number of samples = 550
Description: o-phosphate measurements from water bottle samples
Total - NQuantity: number of samples = 550
Description: ToxN measurements from water bottle samples
AmmoniaQuantity: number of samples = 550
Description: Ammonia measurements from water bottle samples
SilicateQuantity: number of samples = 550
Description: Silicate measurements from water bottle samples
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 200
Description: Direct chlorophyll measurements from discrete depths for CTD calibration
PhytoplanktonQuantity: number of samples = 80
Description: 10 m, integrated depth, hose samples for phytoplankton abundance