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    • Cruise report: Irish Anglerfish & Megrim Survey 2023

      Kelly, Eoghan; Moore, S.J.; Coleman, Paul; Aristegui Ezquibela; Stokes, David; Ni Chonchuir, G. (Marine Institute, 2023)
      The 2023 Irish Anglerfish and Megrim Survey (IAMS) took place from 11th February to 7th March in ICES (International Council Exploration of the Sea) Divisions 7.b-c and 7.j-k, and 14th to 23rd April in ICES Division 6.a on-board the Research Vessel Celtic Explorer. The main objective of the survey was to obtain biomass and abundance indices for anglerfish (Lophius piscatorius and Lophius budegassa) and megrim (Lepidorhombus whiffiagonis and Lepidorhombus boscii) in ICES Division 6.a (south of 58°N) and Subarea 7 (west of 8°W). Secondary objectives were to collect data on the distribution, relative abundance and biology of other commercially exploited species. For the fifth year, additional sampling took place in deep water (up to 1,500m) in order to monitor the recovery of exploited deep-water species following the decline of the deep-water fisheries in Irish waters since early 2000s (Kelly and Gerritsen, 2022). This work was funded under Marine Biodiversity Schemes of the European Maritime and Fisheries Fund (EMFF) from 2019 to 2021 and European Maritime, Fisheries and Aquaculture Fund (EMFAF) since 2022. The IAMS survey is coordinated with the Scottish Anglerfish and Megrim Survey (SIAMISS) as part of ICES International Bottom Trawl Survey Working Group (IBTSWG) and uses the same gear and fishing practices.
    • Atlantic Herring in 6aS/7b, Industry Acoustic Survey Cruise Report, November-December 2022

      O’Malley, M.; Mullins, Eugene; Nolan, Cormac (Marine Institute, 2023)
      An acoustic survey of Atlantic herring Clupea harengus was conducted in ICES areas 6aS/7b in November/December 2022 and January 2023. The 2022 survey was conducted using five vessels; MFVs Crystal Dawn WD201, Ros Ard SO745, Girl Kate SO427, Johnny G S653 (d) and Conquest SO852. The 6aS/7b survey design in 2022 focused on 6 core areas with prior knowledge of herring distribution from previous surveys and the monitoring fishery were targeted for surveying. The change in survey design since 2020 was largely based on the results from ICES WKHASS (ICES 2020) and from lessons learned in the previous surveys in this area from 2016-2019. This design resulted in a much reduced survey area compared to previous years, but with better coverage of most of the important inshore bays where the monitoring fishery takes place. The survey design objective remained the same; to capture the distribution of winter spawning herring in the 6aS/7b area, but this design was not expected to achieve overall stock containment. The timing of surveys in the core areas was flexible from the outset by design. The greater flexibility allows for a targeted spatial and temporal approach which avoided the inevitable poor weather that can happen in this area during this time of the year and which led to reduced survey effort in some previous years. Using smaller vessels allowed surveys to be conducted in shallow inshore areas where herring are known to aggregate during this time of the year. This survey is the seventh consecutive annual acoustic survey for pre-spawning herring in this area at this time of the year. A pole-mounted system with a combi 38 kHz (split) 200 kHz (single) transducer was used successfully for the survey on small vessels (<18m) in 2022. Herring were again distributed inshore in shallow areas, and the improved survey design and use of small vessels for the survey resulted in a good measure of uncertainty (CV =0.25). The stock was not overall contained in 2022, particularly in the Donegal Bay area (Malin Beg, etc.) and more effort is required to target surveys earlier and later than December and January when herring tend to show up in these areas in difficult to predict patterns. Very strong herring marks were evident in Lough Foyle and Lough Swilly in the channel in marks that extended for many miles in some cases. This was in areas where smaller boats in the fishery were concentrating effort. Herring had left the Swilly and Foyle by mid-February. There was also a series of strong herring marks in Bruckless Bay, Fintra Bay and Inver Bay in discreet areas, particularly in December. The monitoring fishery was being conducted on smaller boats in the same areas and close to the same time as the survey and biological samples from some of these vessels were used. There was a fairly tight distribution of length classes in all hauls, with most hauls dominated by larger (> 22 cm) mature fish. The 2- and 3-wr age class of herring accounted for 72% of the overall numbers in 2022. The total stock biomass (TSB) estimate of 54,046 tonnes is considered to be a minimum estimate of herring in the 6aS/7b survey area at the time of the survey. The 2022 estimate is the highest estimate in the time series. The flexible survey design and focusing on discreet areas was generally successful and is providing a good template for future survey designs.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2023

      Marine Institute; Wageningen Marine Research; Institute of Marine Research; Faroe Marine Research Institute; Danish Institute for Fisheries Research; Spanish Institute of Oceanography (Marine Institute, 2023)
      Coordination of the survey was initiated at the meeting of the Working Group on International Pelagic Surveys (WGIPS) in January 2023 and continued by correspondence until the start of the survey. During the survey, effort was refined and adjusted by the survey coordinator (Norway) using real time observations.
    • National Survey Of Sea Lice (Lepeophtheirus salmonis Krøyer and Caligus elongatus Nordmann) on Fish Farms in Ireland – 2022

      D'Arcy, J.; Kelly, Suzanne; McDermott, Tom; Kane, F.; Casserly, Joanne; Power, Ayesha; O'Donohoe, P.; Ruane, Neil M. (Marine Institute, 2023)
      Farmed stocks of Atlantic salmon in Ireland are inspected on 14 occasions throughout the year to monitor sea lice levels as part of a national programme. Sea lice are a naturally occurring parasite found on marine fish, including salmonids. They are small ecto-parasitic copepod crustaceans and there are approximately 559 species. The objectives of the National Sea Lice Monitoring Programme are: *To provide an objective measurement of infestation levels on farms. * To investigate the nature of infestations. * To provide management information to drive the implementation of control and management strategies. * To facilitate further development and refinement of this strategy. The sea lice control and management strategy has five principal components: * Separation of generations. * Annual fallowing of sites. * Early harvest of two-sea-winter fish. * Targeted treatment regimes, including synchronous treatments. * Agreed husbandry practices.
    • Fish Health Unit Report of Activities Undertaken in 2022

      Doré, B.; Kenny, E.; Bradley, F.; O’ Kane, Patricia; Clancy, Joshua; Farragher, E.; Cheslett, D.; White, S.; Griffin, Bogna (Marine Institute, 2023)
      This report summarises the activities undertaken by the Fish Health Unit of the Marine Institute in 2022. Regulation (EU) 2016/429 lays down the rules for the prevention and control of animal diseases which are transmissible to animal or humans and the Marine Institute is the Competent Authority responsible for implementation of this regulation in Ireland. The purpose of this report is to provide all stakeholders with an improved understanding of the operations of the Marine Institute in fish health, and the findings encountered by the Fish Health Unit in 2022.
    • Chapter 10: Marine Infrastructures & Programmes for Essential Ocean Variables Monitoring

      Berry, Alan; Donnelly, Felicity; Cusack, Caroline K.; Fitzhenry, Deirdre; Nolan, Glenn (Marine Institute, 2023)
    • Chapter 09: Regional and Local Downscaled Models

      Dabrowski, Tomasz; Nagy, Hazem; McGovern, Joseph; Gallagher, Sarah; Nic Guidhir, Méabh; Olbert, Agnieszka I. (Marine Institute, 2023)
    • Chapter 08: Land Ocean Aquatic Continuum

      DeEyto, Elvira; Murphy, Conor; Broderick, C.; Penk, Marcin R.; Poole, Russell; Kelly, Sean; McGrath, Triona; Wilkes, Robert; Doyle, Brian; McDermott, Georgina (Marine Institute, 2023)
    • Chapter 07: Seabirds

      Power, Andrew; Newton, Stephen; Burke, Brian; Tierney, D.; O'Connor, Ian (Marine Institute, 2023)
    • Chapter 06: Commercial Fisheries

      Vaughan, Louise; Minto, Cóilín; Reid, David G.; Cusack, Caroline K.; Poole, Russell; Lordan, Colm; Brophy, Deirdre (Marine Institute, 2023)
    • Chapter 05: Phytoplankton

      Clarke, Dave; Yamanaka, Tsuyuko; Cusack, C. (Marine Institute, 2023)
    • Chapter 04: Ocean Chemistry

      Büscher, Janina V.; Cave, Rachel R.; O'Donnell, Garvan; Cronin, Margot; McGovern, Evin (Marine Institute, 2023)
    • Chapter 03: Physical Oceanography

      McCarthy, G. D.; Caesar, Levke; Ulthaman, Ashly; Daly, Eoghan (Marine Institute, 2023)
    • Chapter 02: Atmospheric Drivers of Marine Climate

      Hanley, John (Marine Institute, 2023)
    • Chapter 01: Introduction

      Nolan, Glenn (Marine Institute, 2023)
    • Irish Ocean Climate and Ecosystem Status Report

      Nolan, Glenn; Cusack, C.; Fitzhenry, Deirdre (Marine Institute, 2023)
      This report is intended to summarise the current trends in Ireland’s ocean climate. Use has been made of archived marine data held by a range of organisations to elucidate some of the key trends observed in phenomena such as atmospheric changes, ocean warming, sea level rise, acidification, plankton and fish distributions and abundance, and seabirds. The report aims to summarise the key findings and recommendations in each of these areas as a guide to climate adaptation policy and for the public. It builds on the previous Ocean Climate & Ecosystem Status Report published in 2010. The report examines the recently published literature in each of the topic areas and combines this in many cases with analysis of new data sets including long-term time series to identify trends in essential ocean variables in Irish waters. In some cases, model projections of the likely future state of the atmosphere and ocean are presented under different climate emission scenarios.
    • Year in Review 2022

      Marine Institute (Marine Institute, 2023)
      The Year in Review 2022 is a snapshot of some of the Marine Institute’s many highlights and achievements during a busy and productive year
    • Explorers Engagement and Impact Report 2022

      The Camden Education Trust (Marine Institute, 2023)
      The Explorers Engagement and Impact Report 2022 provides the highlights of the Marine Institute’s Explorers Education Programme activities including outreach in schools, teachers training, workshops, as well as the resources developed for online teaching.
    • Explorers Ocean Literacy Principle #6 The Ocean and Humans are Inextricably Linked Presentation

      Dromgool-Regan, Cushla; Crowley, Danielle (Marine Institute, 2023)
      The Explorers Ocean Literacy Principle #6 Presentation introduces you to the sixth principle of ocean literacy: the ocean and humans are inextricably linked, and the concepts behind this principle. Slides can be used as a presentation or printed to display in the class. This PowerPoint may be used for educational purposes and the images must retain all of their image copyright detail