Cruise inventory

FRV Mara 7A/76

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier7A/76
Cruise period1976-05-29 — 1976-06-05
Port of departureSullom Voe, United Kingdom
Objectives1) To carry out a sampling of the benthic populations of Sullom Voe, with special attention to the distribution, density, diversity, and biomass of these populations. This survey, an extension of the 1975 preliminary survey, had as it's purpose the provision of a more detailed information on the benthic populations of certain 'sensitive' areas which are likely to reveal future interference with the environment
2) To collect samples of sediment and fauna for hydrocarbon and heavy metal analysis
3) To conduct a search for the recovery of a box corer lost during the April 1975 survey

An additional member of staff joined the crew in Sullom Voe on the 01/06/1976.
Chief scientistAnastasios Eleftheriou (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 7A/76 cruise report mara7a_76.pdf — access key 'C' (0.14 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificSullom Voe
Physical oceanography 
Water bottle stationsQuantity: number of stations = 93
Chemical oceanography 
OxygenQuantity: number of stations = 28
PhosphateQuantity: number of stations = 13
NitrateQuantity: number of stations = 13
Total - NQuantity: number of stations = 23
AmmoniaQuantity: number of stations = 13
SilicateQuantity: number of stations = 13
Trace metals
Chlorinated hydrocarbons
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 15
Particulate organic matter (inc POC, PON)Quantity: number of stations = 15
Description: sampled
PhytobenthosQuantity: number of stations = 15
Description: sampled
ZoobenthosQuantity: number of stations = 15
Description: sampled
Other biological/fisheries measurementQuantity: number of stations = 16
Description: surveyed for attached plants and algae studied using underwater TV