Marine Institute Open Access Repository

Welcome to the Marine Institute Open Access Repository

The Marine Institute Open Access Repository facilitates full text access to the publications of the Marine Institute in accordance with copyright permissions. The aim of the Repository is to collect, preserve and provide open access to the publications of the Marine Institute, including the research publications supported by National and European funded marine research programmes.



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  • Atlas of Commercial Fisheries around Ireland, fourth edition

    Gerritsen, Hans D (Marine Institute, 2024)
    This atlas provides a series of detailed maps of commercial fishing activity around Ireland with the aim of providing insights into fishing activities and fisheries resources. The atlas contains maps of: <br><br> * Fishing effort of vessels of all nationalities by gear type inside the Irish Exclusive Economic Zone (EEZ); <br><br> * Fishing effort of Irish vessels by gear type in all areas where they operate; <br><br> * Landings taken by Irish vessels for the main commercially exploited species.<br><br> The atlas is the fourth of its kind and is based on data from fishing vessels of ≥12m in length over the period 2018-2022.<br><br> The maps are available for download in geotiff format from: As new data becomes available these online datasets will be updated
  • Year in Review 2023

    Marine Institute (Marine Institute, 2024)
    The Year in Review 2023 is a snapshot of some of the Marine Institute’s many highlights and achievements during a busy and productive year.
  • Correlation Between Reef Terrain Variables and Species Diversity in Spiny Lobster Habitat

    O'Keeffe, Eimear; Scally, L.; Clarke, S.; Pfeiffer, N.; Smith, Brian; Tully, Oliver (Marine Institute, 2024)
    Crayfish or spiny lobster occur in physically complex reef habitat in shallow waters off the west coast of Ireland. These habitats provide shelter for larvae that are settling out from the overlying water column and for juvenile and adult lobsters that use these areas to shelter and forage. Fisheries for spiny lobster occur in these areas and remove lobsters from the reef. The consequence of this for the structure and function of reef habitat is unknown. In this study the distribution of reef habitat was estimated from multibeam acoustic data collected in previous campaigns by the INFOMAR programme. Sub-sets of this area were re-mapped at higher resolution to provide further detail of the topography of the reef from which terrain variables were derived. Underwater video and SCUBA methods were used to identify the flora and fauna in areas with different topographies. Weak correlations between the terrain variables and the biological data were found. This was used to model the distribution of areas of high and low biodiversity over broader areas where only terrain data were available. Capacity to model the distribution of biological communities and crayfish over broad areas using physical terrain data remains difficult. Other physical variables that may be important in regulating the biology of reef need to be included and the association of crayfish with particular types of reef terrain needs to be established by higher resolution sampling. The benefits of the work reported here include increased capacity to monitor the distribution of biodiversity in marine reef habitats, to detect change that may be brought about by sector activities such as fishing or climate change, to estimate the population size of exploited reef species for fisheries management and to identify positive changes to biodiversity and lobster abundance that may occur through spatial management of reef habitat.
  • Celtic Sea Herring Acoustic Survey Cruise Report 2023, 09 - 29 October, 2023

    O'Donnell, Ciaran; O’Malley, M.; Mullins, Eugene; Daly, Eoghan; Keogh, Niall; McBride, Lauren (Marine Institute, 2024)
    The primary objectives of this survey were: <br><br> *Carry out a two phase survey cruise track covering the core survey area <br><br> *Carry out additional adaptive surveys as required in areas of interest <br><br> *Collect biological samples from directed trawling on insonified fish echotraces <br><br> * Collect biological data on the age, length and maturity of herring and sprat <br><br> *Determine an age stratified estimate of relative abundance of herring within the survey area (ICES Divisions VIIj, VIIg and VIIaS) <br><br> *Determine an estimate of relative abundance of sprat, anchovy and sardine within the survey area (ICES Divisions VIIj, VIIg and VIIaS) <br><br> *Collect physical oceanography data from vertical profiles from a deployed sensor array <br><br> * Collect biological samples of sprat and herring for genetic analysis on stock origin studies. <br><br> * Visual surveys to determine the distribution and abundance of apex predators (marine mammals, tuna and seabirds)
  • Shellfish Stocks and Fisheries Review 2023: an assessment of selected stocks

    Marine Institute; Bord Iascaigh Mhara (Marine Institute, 2023)
    This review presents updated information on the status of selected shellfish stocks in Ireland for 2023. In addition, data on the fleet and landings of shellfish species (excluding Nephrops) are presented. The intention of this annual review is to present stock assessment and management advice for shellfisheries that may be subject to new management proposals or where scientific advice is required in relation to assessing the environmental impact of shellfish fisheries especially in areas designated under European Directives. The review reflects the recent work of the Marine Institute (MI) in the biological assessment of shellfish fisheries and their interaction with the environment.

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