FRV Alba Na Mara 0922A
Cruise plan
| Cruise Info. | |
| Ship name (ship code) | FRV Alba Na Mara (74NM) |
| Cruise identifier | 0922A |
| Cruise period | 2022-06-23 — 2022-07-11 |
| Status | Completed |
| Port of departure | Fraserburgh, United Kingdom |
| Port of return | Fraserburgh, United Kingdom |
| Purpose | Research |
| Objectives | Objectives
1. To conduct a fisheries acoustic survey to assess the distribution and abundance of pelagic fish in: 1.1 Moray Firth OWF development sites To undertake an acoustic survey of sandeels and clupeid fish in the water column using 38 and 120 kHz. Concentrations of fish will be sampled using the pelagic trawl, but not within established farms. Species composition and length frequency distributions of fish caught will be determined. Subsamples will be weighed and their otoliths removed to establish length-weight relationships and age composition. 1.2 Forth and Tay OWF development sites To undertake an acoustic survey of sandeels and clupeid fish in the water column using 38 and 120 kHz. Concentrations of fish will be sampled using the pelagic trawl, but not within established farms. Species composition and length frequency distributions of fish caught will be determined. Subsamples will be weighed and their otoliths removed to establish length-weight relationships and age composition. 2. To conduct RoxAnn survey of the substrate along the acoustic survey track. 3. To conduct a demersal fishing survey in the Forth and Tay region 3.1 Demersal fishing To assess abundance, length-frequency-distribution, and weight-at-length of demersal fish at 26 fixed stations in the Forth and Tay region by demersal trawl survey. Samples will be retained for energy content analysis at a later date. 3.2 CTD and FLNTU To sample variation in water temperature, conductivity, turbidity and chlorophyll-a through the water column using a Seabird CTD sampler and FLNTU at all demersal trawl stations and 2 additional sites within OWFs. |
| Chief scientist | Thomas Regnier (Marine Scotland Aberdeen Marine Laboratory) |
| Cruise programme |  (0.30 MB) |
| Ocean/sea areas | |
| General | North Sea Unknown |
| Specific | Moray Firth, Firth of Forth, Firth of Tay |
