RV Cefas Endeavour 14/07
Cruise summary report
|Ship name (ship code)||RV Cefas Endeavour (74E9)|
|Cruise period||2007-07-10 — 2007-07-18|
|Port of departure||Portland Harbour, United Kingdom|
|Port of return||Portland Harbour, United Kingdom|
This is the second in a series of cruises over the next four years in the South-Western Approaches, in support of MF101. The results of this work will aim to describe the effects of fishing and the environment on production and food web structures. The specific objective of this cruise was:
To sample infaunal and epifaunal invertebrates and fish at a series of sites subject to different levels of trawling disturbance for production studies.
a. To sample the microbial community at a series of stations in the South-Western Approaches to provide data on the distribution patterns of bacterial and archaeal communities within different depths of the sediment in relation to abiotic and biotic parameters.
b. To collect gastrointestinal tracts and blood samples from crustaceans and teleosts to help determine the transition pathways of Brucella
CEFAS ENDEAVOUR sailed from Portland at 21:00 GMT on 10 July and steamed westwards to the first study area for the survey, a shell gravel habitat at South Eddystone (E1). Sampling started at 05:00 the following day, with seven replicate deployments made with the mini Hamon grab. Further samples were collected with a 2m-beam trawl (two hauls), large Hamon grab (5 deployments) and 4m-beam trawl (one tow) at the same site. Sampling continued until 20:30, with a further two sampling stations (E2 and E3) being completed and benthic samples collected from the 2-m beam, and the large and mini Hamon grab. One successful 4-m beam tow was also deployed at E2, but darkness prevented completion of a final 4m-beam tow at E3. With daylight fading CEFAS ENDEAVOUR steamed overnight to the fourth South Eddystone station (E5).
Work at this site was due to start at 05:00 on 12 July, however, at 04:45 CEFAS ENDEAVOUR suffered a failure of the propulsion system when powering up to two engines, and didn't regain full control again until after 07:00. When power had been restored,
|Chief scientist||Tracy Ann Maxwell (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)|
|Cruise report||(0.05 MB)|
|Track charts||(00 MB)|