Over 90% of active fishing vessels in the inshore fleet use pots and nets to target crustaceans. Non-retained by-catch in these fisheries are significant especially in the static net (tangle net and gill net) metier. Commercial and non-commercial finfish are also captured in pots and some of this may be retained for bait.
Through awareness of information collected on Marine Biodiversity this project will enable engagement with stakeholders with an interest in Ireland’s marine resource.
As part of the data collection framework, the Marine Institute conducts ten annual fisheries research surveys at sea to provide fisheries independent data for stock assessment.
Many of the stocks which are caught by the Irish commercial fishing fleets are considered to be data-limited or are not assessed at all. These include a number of key stone species (like sprat, gurnards, saithe, pollack, ling) and species sensitive to the impacts of fishing (like rays and skates, john dory, brill and turbot).
Several studies have indicated large accumulations of plastic microfibers in the gut of Dublin Bay prawns Nephrops norvegicus and in the sediments in which they live. The complicated gut system in this species is suggested to retain plastic fibers and places these stocks at potentially high risk of interference from marine microplastic pollution. Fibers which are too large or numerous to pass through the gut can form balls of aggregated material over time.
As part of the European Habitats Directive (EC 92/43/EEC), Member States need to take measures to avoid deterioration of protected habitats. Ireland is carrying out extensive mapping surveys of offshore reefs to evaluate status and introduce conservation and management measures in proportion to status and pressures from fishing. This study has been identified as high priority by the Department of Culture, Heritage and the Gaeltacht (DCHG) for the marine environment to fulfil Ireland’s obligations under the Habitats Directive.