Resources

RV Cefas Endeavour 06/21

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier06/21
Cruise period2021-04-22 — 2021-05-01
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesPrimary Aims
1. To collect samples of demersal fish for chemical analysis from the North Sea, and English Channel in support of the Clean Seas Environmental Monitoring Programme (CSEMP) (OSPAR Common indicator and UK specific Indicator assessments).
2. To collect fish samples at CSEMP sites for fish disease biochemical markers (e.g. EROD and bile metabolites analysis and AChE) (UK specific Indicator Assessments).
3. To sample representative CSEMP stations using day grab, for polycyclic aromatic hydrocarbons (PAHs), trace metal contaminants, organic contaminants (PCBs, PBDEs and HBCD), sediment particle size analysis (PSA) and marine litter (OSPAR Common indicator and UK specific Indicator assessments).
4. To conduct marine litter surveys (OSPAR Common indicator and UK specific Indicator assessments) by collecting benthic litter information from the trawls and collecting sediment samples for litter analysis.
5. To sample representative stations using a Shipek or a Day grab from 11 stations within and around the Inner Tees dredged material disposal site. Samples will be assessed for sediment contaminants concentrations (organohalogens) and carbon. This is funded by the MMO and the results will be reported in a report which is publicly available on the Defra.gov.uk site and via the MMO. The results are used by the MMO to aid decisions regarding dredged material disposal applications and the suitability of the screening process for contaminants concentrations.

Secondary Aims
1. To collect water conductivity, temperature, nutrient, and depth information, and Plankton community information to provide additional knowledge on Eutrophication levels (OSPAR Common indicator and UK specific Indicator assessments). Calibration exercise at West Gabbard (51.95458333, 2.1096) smart Buoy location, using CTD Rosette. Daily chlorophyll sample (night time hours of dark forGiA03).
2. To collect additional fish for the Environment Agency (EA) for a comparison study of whole fish, and fish muscle (mercury) and liver (other contaminants) in the quantity of contaminants. EA require 9 fish from stations 244, 294, 377, 387, 486, and 494.

Tertiary Aims
1. To collect sediment samples using a day grab to detect rapid toxicity within sediments samples using the Microtox® rapid test methodology.
2. To collect sediment samples using the Day grab for the Defra R&D projects Advancing integrated understanding of the seabed (C8116, C8335) and NCEA carbon sequestration service observations (C8357).

Narrative in attached cruise report.
Chief scientistFreya Goodsir (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise programmeRV Cefas Endeavour 06/21 cruise programme endeavour06_21.pdf  (0.25 MB) 
Cruise reportRV Cefas Endeavour 06/21 cruise report endeavour06_21.pdf (4.05 MB) 
Ocean/sea areas 
GeneralEnglish Channel
North Sea
SpecificNorth Sea and eastern English Channel