RV Cefas Endeavour 09/10
Cruise summary report
|Ship name (ship code)||RV Cefas Endeavour (74E9)|
|Cruise period||2010-04-12 — 2010-04-22|
|Port of departure||Swansea, United Kingdom|
|Port of return||Falmouth, United Kingdom|
1. To describe the size and species structure of epifaunal communities in the Celtic Sea to provide production and diversity estimates
2. To sample chlorophyll in the sediments and water column to assess the relationship between surface and sediment chlorophyll concentrations.
Both activities will support the validation of models of benthic production and diversity in the Celtic Sea (Defra MF1001).
The scientific staff joined CEFAS ENDEAVOUR at Swansea Docks, early evening (approx. 17:15 BST) on Monday 12 April. CEFAS ENDEAVOUR sailed from Swansea on the morning tide (06:56) of Tuesday 13 April.
Upon sailing, CEFAS ENDEAVOUR steamed southwestwards to reach the first grid station, C67. Sampling started at 10:31 working within a 100m bullring, which was drawn up around each target sampling station. Two five-minute 2 m beam trawl tows were successfully completed at station by 11:04. The catch was combined and the fauna removed from the debris and sediment. Individual animals were weighed into weight classes. Aggregated weights and numbers by species were recorded on paper. The electronic deck master system was also trialled successfully. On completion of the beam trawls, the NIOZ corer was deployed and sub samples of the sediment were collected for chlorophyll 'a', 2 porosity, sediment granulometry and meiofauna. CEFAS ENDEAVOUR then steamed southwest to station C58. Two 2m beam trawls and one NIOZ core were obtained before continuing on to a further 3 stations (C59, C69 and C107). At each station both the 2 m beam trawl and NIOZ corer were deployed to collect physical and biological data. At station C69, 5 deployments were made with the NIOZ corer and in addition to taking subsamples from the sediment, all five samples were sieved over a 1 mm sieve and the fauna picked off and preserved in 4% formaldehyde for later identification. CEFAS ENDEAVOUR then steamed southwest overnight to station C49, beginning work at
|Chief scientist||Tracy Ann Maxwell (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)|
|Cruise report||(0.04 MB)|
|Specific||Western English Channel and Celtic Sea|
|Track charts||(00 MB)|