1. To complete the cockle survey of Barnhourie and Mershead Sand using suction dredging and to sample the areas inaccessible to the land based quadrat survey in August.
2. To survey other commercially exploited cockle grounds in the Solway Firth including the Wigtown Bay area.
3. To locate suction dredge tracks in Wigtown Bay when exposed to low tide and estimate the number of damaged cockles left in the tracks.
4. Estimate discard survival.
Trevor R W Howell (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Biology and fisheries
Quantity: number of stations = 146 Description: sampled using a suction dredge