RV Corella 4/73
Cruise summary report
|Ship name (ship code)||RV Corella (74CX)|
|Cruise period||1973-02-20 — 1973-03-05|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
|Objectives||1. To carry out an inshore survey of the English East Coast for fish eggs
and larvae using a 20" naked High Speed Tow Net.
2. To collect stomachs of all species of fish found on the plaice spawning grounds of the Southern Bight using an Engel 800 midwater trawl with headline transducer.
3. To sample a small grid of plankton stations using a high speed plankton
sampler in the same area as Aim 2.
4. To measure escape of copepod nauplii using paired 200 and 400 meshes per inch nets mounted on a 3O" Sampler.
5. To test a new 30" unenclosed net.
6. To collect live copepods for laboratory use.
7. To sample plaice larvae by means of fast and slow hauls in daylight
and darkness for nutrition studies (Ehrlich).
8. To collect samples of dab and plaice for histological studies.
9. To make a transect to the Dutch Coast using a fluororneter to
measure phytoplankton densities.
10. To collect plaice eggs for hatchery use.
|Chief scientist||John D Riley (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.16 MB)|
|Surface measurements underway (T,S)||Description: S only|
|Water bottle stations||Quantity: number of stations = 51|
Description: 3 with S only
|Transparency (eg transmissometer)||Description: turbidity|
|Biology and fisheries|
|Phytoplankton pigs (eg chlorophyll, fluorescence)|
|Zooplankton||Quantity: number of stations = 100|
|Eggs and larvae||Quantity: number of stations = 100|
|Pelagic bacteria/micro-organisms||Quantity: number of stations = 40|
|Occasional standard measurements|
|Other meteorological measurements||Description: sea and swell|