Cruise inventory

FV Joanna J. Young Fish Survey 1986

Cruise summary report

Cruise Info. 
Ship nameFV Joanna J.
Cruise identifierYoung Fish Survey 1986
Cruise period1986-09-02 — 1986-09-05
StatusCompleted
Port of departureWest Mersea, United Kingdom
Port of returnWest Mersea, United Kingdom
PurposeResearch
ObjectivesBeam trawling in the North Thames area. Push net sites sampled throughout.

Young Fish Survey 1986 with: FV Alvic, FV Avon Valley, FV Challenge, FV Jo's Boys, FV Serenity, FV St Richard, FV Joanna J., FV Kimbill of Eden and FV Sharowna.

1. To carry out an inshore beam trawl and push net survey of part of the North Sea and English Channel coasts of young demersal fish in relation to the environment. To include collecting data for juvenile flatfish yearclass size estimation.

Results:
1. In total in the Young Fish Survey. 313 hauls made using the standard 2m beam trawl and 52 push net sites using the standard 1.5m push net sampled. All fish caught identified and measured. Salinity and sediment samples collected and surface temperature, benthos, shrimp by-catch and dissolved oxygen (River Thames) observed at each station.
Chief scientistColin L Whiting (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportFV Joanna J. Young Fish Survey 1986 cruise report commercial_vessels_aug86.pdf — access key 'C' (0.09 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificScottish Border-Swanage Bay North Thames
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: observations made at every station
Chemical oceanography 
OxygenDescription: observations made at every station
Biology and fisheries 
PhytobenthosDescription: observations made at every station
ZoobenthosDescription: observations made at every station
Demersal fishQuantity: number of hauls = 313
Description: (in total throughout Young Fish Survey) beam trawl survey in the North Thames area
Demersal fishQuantity: number of surveys = 52
Description: (in total throughout Young Fish Survey) push net sites in the North Thames area
CrustaceansDescription: by-catch of shrimp recorded at each station
Geology and geophysics 
GrabDescription: observations made at every station