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RV Lough Foyle LF/18/99
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RV Lough Foyle (74LG) |
Cruise identifier | LF/18/99 |
Cruise period | 1999-05-02 — 1999-05-07 |
Status | Completed |
Port of departure | Belfast, United Kingdom |
Port of return | Belfast, United Kingdom |
Purpose | Fisheries |
Objectives | Small clupeoids survey
1. To quantify food selection and intake of sprat and juvenile herring in the western Irish Sea, with particular reference to predation on eggs and larvae of commercial fish species. 2. To estimate the biomass amd population structure of sprat and juvenile herring in the study area. 3. To investigate competition for resources between sprat and juvenile herring. 4. To investigate reproductive parameters of sprat. |
Chief scientist | Mike Armstrong (Department of Agriculture for Northern Ireland) |
Cruise report | (0.18 MB) |
Ocean/sea areas | |
General | Irish Sea and St. George's Channel |
Specific | NW Irish Sea |
Track charts | (0.02 MB) |
Moorings, landers, buoys | |
Biology and fisheries | |
Eggs and larvae | 53° 35' 6" N 5° 52' 12" W — Tow 5. Time 08.11. Mean depth 55m. Catch 31kg. |
Eggs and larvae | 53° 51' 41" N 5° 39' 41" W — Tow 9. Time 21.26. Mean depth 91m. Catch 88kg. |
Eggs and larvae | 53° 44' 11" N 5° 52' 12" W — Tow 10. Time 16.39. Mean depth 54m. Catch 0kg. |
Eggs and larvae | 53° 43' 41" N 5° 50' 35" W — Tow 11. Time 17.15. Mean depth 57m. Catch 15kg. |
Eggs and larvae | 53° 47' 11" N 5° 43' 53" W — Tow 16. Time 21.13. Mean depth 66m. Catch 52kg. |
Eggs and larvae | 53° 47' 59" N 5° 43' 5" W — Tow 15. Time 15.58. Mean depth 84m. Catch 26kg. |
Eggs and larvae | 53° 46' 59" N 5° 45' 29" W — Tow 14. Time 08.54. Mean depth 70m. Catch 49kg. |
Eggs and larvae | 53° 44' 41" N 5° 50' 35" W — Tow 13. Time 03.53. Mean depth 58m. Catch 17kg. |
Eggs and larvae | 53° 43' 53" N 5° 51' 5" W — Tow 12. Time 21.22. Mean depth 56m. Catch 2kg. |
Eggs and larvae | 53° 43' 41" N 5° 56' 6" W — Tow 7. Time 14.03. Mean depth 47m. Catch 151kg. |
Eggs and larvae | 53° 35' 24" N 5° 40' 53" W — Tow 6. Time 09.49. Mean depth 91m. Catch 94kg. |
Eggs and larvae | 53° 51' 23" N 5° 38' 29" W — Tow 4. Time 20.16. Mean depth 93m. Catch 160kg. |
Eggs and larvae | 54° 7' 5" N 5° 32' 59" W — Tow 2. Time 11.20. Mean depth 57m. Catch 87kg. |
Eggs and larvae | 54° 10' 59" N 5° 44' 17" W — To investigate the food selection and intake of sprat and herring with reference to predetationon eggs and larvae and competition for resources. Tow 1. Time 08.57. Mean depth 25m. Catch 0kg. |
Eggs and larvae | 54° 4' 47" N 5° 28' 23" W — Tow 3. Time 13.27. Mean depth 86m. Catch 200kg. |
Demersal fish | 53° 44' 11" N 5° 52' 12" W — Tow 10. Time 16.39. Mean depth 54m. Catch 0kg. |
Demersal fish | 53° 35' 6" N 5° 52' 12" W — Tow 5. Time 08.11. Mean depth 55m. Catch 31kg. |
Demersal fish | 53° 43' 35" N 5° 48' 41" W — Tow 8. Time 15.28. Mean depth 63m. Catch 35kg. |
Demersal fish | 53° 43' 41" N 5° 56' 6" W — Tow 7. Time 14.03. Mean depth 47m. Catch 151kg. |
Demersal fish | 53° 46' 59" N 5° 45' 29" W — Tow 14. Time 08.54. Mean depth 70m. Catch 49kg. |
Demersal fish | 53° 35' 24" N 5° 40' 53" W — Tow 6. Time 09.49. Mean depth 91m. Catch 94kg. |
Demersal fish | 53° 43' 41" N 5° 50' 35" W — Tow 11. Time 17.15. Mean depth 57m. Catch 15kg. |
Demersal fish | 53° 51' 23" N 5° 38' 29" W — Tow 4. Time 20.16. Mean depth 93m. Catch 160kg. |
Demersal fish | 53° 44' 41" N 5° 50' 35" W — Tow 13. Time 03.53. Mean depth 58m. Catch 17kg. |
Demersal fish | 54° 7' 5" N 5° 32' 59" W — Tow 2. Time 11.20. Mean depth 57m. Catch 87kg. |
Demersal fish | 53° 47' 59" N 5° 43' 5" W — Tow 15. Time 15.58. Mean depth 84m. Catch 26kg. |
Demersal fish | 54° 10' 59" N 5° 44' 17" W — To investigate the food selection and intake of sprat and herring with reference to predetationon eggs and larvae and competition for resources. Tow 1. Time 08.57. Mean depth 25m. Catch 0kg. |
Demersal fish | 53° 43' 53" N 5° 51' 5" W — Tow 12. Time 21.22. Mean depth 56m. Catch 2kg. |
Demersal fish | 54° 4' 47" N 5° 28' 23" W — Tow 3. Time 13.27. Mean depth 86m. Catch 200kg. |
Demersal fish | 53° 47' 11" N 5° 43' 53" W — Tow 16. Time 21.13. Mean depth 66m. Catch 52kg. |
Demersal fish | 53° 51' 41" N 5° 39' 41" W — Tow 9. Time 21.26. Mean depth 91m. Catch 88kg. |