RRS Discovery D168
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D168 |
| Cruise period | 1987-06-23 — 1987-08-07 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Falmouth, United Kingdom |
| Purpose | Research |
| Objectives | 1. To investigate the distribution of demersal fishes and their larvae on the West African slope.
2. To study the distribution of echinoderms, particuarly holothurians, at selected sites on the West African slope. 3. To study the effects of lights on the capture efficiency of midwater nets. 4. To investigate the physiology of oceanic animals, with particular reference to vision and bioluminescence. 5. To investigate microbial interactions in near surface waters. 6. To carry out horizontal and vertical profiles of bioluminescence and microzooplankton distributions. 7. To make initial trials of the RMT 25 system. |
| Chief scientist | Peter J Herring (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (1.20 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | N.W. African slope/ Eastern N. Atlantic |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of stations = 14 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | |
| Phytoplankton | |
| Zooplankton | |
| Nekton | |
| Pelagic bacteria/micro-organisms | |
| Zoobenthos | Description: survey:distribution,energy transfers,physiology |
| Gear research | |
| Other biological/fisheries measurement | Description: bioluminescence |
