FRV Alba Na Mara 0923A
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Alba Na Mara (74NM) |
| Cruise identifier | 0923A |
| Cruise period | 2023-06-19 — 2023-07-05 |
| 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 the Forth and Tay. 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. 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. If weather allows, conduct a simultaneous seabird at sea survey by collecting data on seabird diversity and abundance on the water and in flight, according to the protocol used in past historic surveys in the region. 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 a. Demersal fishing. To assess abundance, length-frequency-distribution, and weight-at-length of demersal fish at 23 fixed stations in the Forth and Tay region by demersal trawl survey. Samples will be retained for energy content analysis at a later date. b. 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 one additional site within Seagreen OWF. Narrative in attached cruise report. |
| Chief scientist | Thomas Regnier (Marine Scotland Aberdeen Marine Laboratory) |
| Cruise programme |  (0.24 MB) |
| Cruise report | (0.12 MB) |
| Ocean/sea areas | |
| General | North Sea Unknown |
| Specific | Forth and Tay Offshore Wind Farms (Seagreen, Inch Cape, Berwick Bank) |
