0103C-West coast lochs, small pelagics acoustic survey-Clupea cruise 0103 dataset https://portal.medin.org.uk/portal/start.php?tpc=012_Marine_Scotland_FishDAC_1745 Paper records of: EK500 echogram print outs. Haul summary sheets with biological data for each of 9 pelagic, 17 demersal and 8 beam trawls. Excel biological data for 9 pelagic hauls. Sampling Gear and Equipment Modified PT154 with 6 mm codend BT158 demersal trawl with 1O mm codend 2.8 m beam trawl with spare beam Scanmar (Height and spread units) 2 Day grabs Simrad EK500 /RoxAnn CTD Objectives Part 1 1. To carry out detailed acoustic surveys in selected lochs, and the Sound of Sleat, using the EK 500 and RoxAnn to determine the distribution of herring and sprat. Concentrations of pelagic fish will be sampled using the PT154. Species composition and length-frequency distributions of the fish caught will be determined. Sub-samples will be weighed and otolithed to establish length-weight relationships and age structure. Herring samples will be analysed for sex, maturity and lchthyophonus infection. Stomachs, DNA samples and photographs will also be taken from selected samples for the EU projects AQCESS, HERGEN and WESTHER. ,. Part 2 2. To carry out demersal trawls in each of the sea lochs to determine the abundance, distribution and variation of fish species and any epibenthic mega-fauna using the BT158 trawls and the 2.8 m beam trawl where appropriate. At each trawl station the length-frequency of all species will be taken and sub-samples of the major commercial species will be weighed and otolithed. Stomach contents will be removed from selected species for trophic studies. 3. Five grab samples will be taken before trawling, at each of the demersal trawl stations. A CTD will also be done at both pelagic and demersal trawl positions. 20160505