RV Corystes COR4/91
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Corystes (74RY) |
| Cruise identifier | COR4/91 |
| Cruise period | 1991-04-12 — 1991-04-20 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | South Shields, United Kingdom |
| Purpose | Research |
| Objectives | 1. To carry out a plankton survey using a 76cm high speed tow net to determine:
(a) The distribution, abundance and production of sole (Solea solea) eggs as part of the ICES coordinated programme to estimate the female sole spawning stock biomass in divisions IV b and c and VIId and e (b) The distribution and abundance of the planktonic stages of crab (Cancer pagurus), spider crab (Maia squinado) and bass (Dicentrarchus labrax), and other ichthyoplankton as time allows. 2. To take discrete sub-surface sea water samples for salinity determination at each plankton station and to monitor continuously the chlorophyll 'a' fluorescence, salinity and temperature of sub-surface sea water. 3. To study the vertical distribution of crab larvae using the LHPR sampler. There was insufficient time to attempt this aim on this cruise. |
| Chief scientist | Brenda M Thompson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Cruise report |  (0.06 MB) |
| Ocean/sea areas | |
| General | English Channel North Sea |
| Specific | English Channel |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: activity duration in days = 7 |
| Water bottle stations | Quantity: number of stations = 69 Description: top & bottom t |
| CTD stations | Quantity: number of stations = 69 Description: surface S only |
| Optics (eg underwater light levels) | Quantity: number of stations = 69 Description: light levels |
| Biology and fisheries | |
| Phytobenthos | Quantity: number of stations = 69 Description: sampled using a 76cm high speed tow net. |
| Zoobenthos | Quantity: number of stations = 69 Description: sampled using a 76cm high speed tow net. |
