• Fish species recorded during deepwater trawl surveys on the continental shelf and the Porcupine Bank, 2006-2008

      Johnston, G.; O'Hea, B.; Dransfeld, L. (Marine Institute, 2012)
      The Marine Institute and the National University of Ireland, Galway conducted a deepwater survey each September from 2006-2008 from the RV Celtic Explorer using BT184 deepwater nets with type-D ground gear (ICES 2006). Fish, benthic and hydrographic data were collected. Two-hour fishing trawls (time on bottom) took place in three locations on the continental slope to the north and west of Ireland, and on the Porcupine Bank. The survey objectives were to collect biological data on the main deepwater fish species and invertebrates. In total 166 taxa were recorded over the three years, with a maximum of 129 in 2008.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2012

      Marine Institute, Institute for Marine Resources & Ecosystem Studies; Institute of Marine Research, PINRO; Faroe Marine Research Institute, Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut, Danish Institute for Fisheries Research (Marine Institute, 2012)
      Coordination of the survey was initiated in the meeting of the Working Group on Northeast Atlantic Pelagic Ecosystem Surveys (WGNAPES, ICES 2011) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice a day. The survey design used and described in ICES (2011) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Due to favourable weather conditions throughout the survey period and full vessel availability, the survey resulted in a high quality coverage of the stock. Transects of all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 2 weeks.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2013

      Marine Institute; Institute for Marine Resources & Ecosystem Studies; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Irish Whale and Dolphin Group; Galway and Mayo Institute of Technology (Marine Institute, 2013)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice daily. Norway did not participate in the survey this year. The survey design used and described in ICES (2012) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Due to acceptable - good weather conditions throughout the survey period, the survey resulted in a high quality coverage of the stock. Transects of all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 19 days.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2014

      Marine Institute; Institute for Marine Resources & Ecosystem Studies; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Birdwatch Ireland; Irish Parks and Wildlife Service (Marine Institute, 2014)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice daily. The survey design used and described in ICES (2014) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Due to acceptable - good weather conditions throughout the survey period, the survey resulted in a high quality coverage of the stock. Transects of all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 14 days.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2015

      Marine Institute; Institute for Marine Resources & Ecosystem Studies; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Birdwatch Ireland; Irish Whale and Dolphin Group (Marine Institute, 2015)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice daily. The survey design used and described in ICES (2014) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Considering weather conditions were by no means optimal during the survey period, good quality coverage of the stock was achieved. Transects of all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 14 days.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2016

      Marine Institute; Institute for Marine Resources & Ecosystem Studies; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Birdwatch Ireland; Galway/Mayo Institute of technology (Marine Institute, 2016)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice daily. The survey design used and described in ICES (2015) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Overall weather conditions were good during the survey with a total of 3 days weather down time recorded. Transects undertaken by all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 23 days.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2017

      Marine Institute; Wageningen Marine Research; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; BirdWatch Ireland; Irish Whale and Dolphin Group; et al. (Marine Institute, 2017)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey effort was refined and adjusted by the coordinator based on real time observations. The survey design applied followed methods described in ICES Survey design Manual (2015) and allowed for a flexible transect design and comprehensive coverage of the spawning aggregations. Overall weather conditions were mixed with periods of poor and good weather. All vessels, with the exception of Kings Bay experienced some downtime due to conditions with the Faroes experiencing the most prolonged period of bad weather at the end of the survey period. The entire survey was undertaken within 20 days and below the 21 day target threshold. The bulk of the survey was temporally consistent with the exception of one transect in the southern Rockall Trough.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2018

      Marine Institute; Wageningen Marine Research; Institute of Marine Research; PINRO; Faroese Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Galway/Mayo Institute of technology; Irish Parks and Wildlife Service (Marine Institute, 2018)
      Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) 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. The survey design was based on methods described in ICES Survey design Manual (2015). Overall weather conditions were mixed with periods of poor and good weather. All vessels experienced some downtime due to poor weather conditions. The entire survey was completed within 20 days, below the 21 day target threshold.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2019

      Marine Institute; Wageningen Marine Research; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; Spanish Institute of Oceanography (Marine Institute, 2019)
      Coordination of the survey was initiated at the meeting of the Working Group on International Pelagic Surveys (WGIPS) in January 2019 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. The survey design was based on methods described in ICES Manual for International Pelagic Surveys (ICES, 2015). Overall weather conditions were mixed with periods of poor and good weather. All vessels experienced some downtime due to poor weather conditions. The entire survey was completed in 26 days, above the 21-day target threshold. However, the survey start was delayed by almost one week compared to 2018 and included additional effort by the Spanish survey in the Porcupine Sea bight.
    • International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2021

      Marine Institute; Wageningen Marine Research; PINRO; Faroe Marine Research Institute; Danish Institute for Fisheries Research; Spanish Institute of Oceanography; Institute of Marine Research (Marine Institute, 2021)
      Coordination of the survey was initiated at the meeting of the Working Group on International Pelagic Surveys (WGIPS) in January 2021 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. The survey design was based on methods described in ICES Manual for International Pelagic Surveys (ICES, 2015). Weather conditions were regarded as exceptionally poor and all vessels experienced multiple days of downtime, with the exception of the Spanish vessel working in the Porcupine Seabight. This considered, the stock was covered comprehensively and contained within the survey area. The entire survey was completed in 19 days, below 21-day target threshold.
    • International Blue Whiting Spawning Stock Survey Spring 2006

      Marine Institute; Institute of Marine Research; AtlantNIRO; PINRO; National University of Ireland, Galway; Faroese Fisheries Laboratory; Institute for Marine Resources & Ecosystem Studies; Danish Institute for Fisheries Research (Marine Institute, 2006)
      In spring 2006, five research vessels representing the Faroe Islands, Ireland, the Netherlands, Norway and Russia surveyed the spawning grounds of blue whiting west of the British Isles. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the second coordinated international blue whiting spawning stock survey since mid-1990s. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (Atlantniro: Shnar et al. 2006; Celtic Explorer: Mullins et al. 2006; G. O. Sars: Heino et al. 2006; M. Heinason: Jacobsen et al. 2006; Tridens: Ybema et al. 2006). This report is based on a workshop held after the international survey in Tórshavn, 20–21/4/2006, where the data were analysed and the report written. Parts of the document were worked out through correspondence during and after the workshop.
    • International Blue Whiting Spawning Stock Survey Spring 2007

      Marine Institute; Institute of Marine Research; National University of Ireland, Galway; Danish Institute for Fisheries Research; PINRO; AtlantNIRO; Faroese Fisheries Laboratory; Institute for Marine Resources & Ecosystem Studies; FRS Marine Laboratory; Federal Research Institute for Fisheries (Marine Institute, 2007)
      In spring 2007, five research vessels representing the Faroe Islands, Ireland, the Netherlands, Norway and Russia surveyed the spawning grounds of blue whiting west of the British Isles. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the fourth coordinated international blue whiting spawning stock survey since mid-1990s. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (Celtic Explorer: O’Donnell et al. 2007; Eros: Godø et al. 2007; M. Heinason: Jacobsen et al. 2007; Tridens: Ybema 2007). This report is based on a workshop held after the international survey in IJmuiden, 18-19/4/2007 where the data were analysed and the report written. Parts of the document were worked out through correspondence during the workshop and during a protracted period after the workshop.
    • International Blue Whiting Spawning Stock Survey Spring 2008

      Marine Institute; Institute of Marine Research; Danish Institute for Fisheries Research; PINRO; Faroese Fisheries Laboratory; Institute for Marine Resources & Ecosystem Studies; FRS Marine Laboratory; Federal Research Institute for Fisheries; Irish Whale and Dolphin Group (Marine Institute, 2008)
      In spring 2008, five research vessels representing the Faroe Islands, Ireland, the Netherlands, Norway and Russia surveyed the spawning grounds of blue whiting west of the British Isles. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the fifth coordinated international blue whiting spawning stock survey since mid-1990s. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (F. Nansen: Oganin et al. 2008; Celtic Explorer: O’Donnell et al. 2008; M. Heinason: Jacobsen et al. 2008; Tridens: Ybema et al. 2008). This report is based on a workshop held after the international survey in Kaliningrad, 23-25/4/2008 where the data were analysed and the report written. Parts of the document were worked out through correspondence during and after the workshop.
    • International Blue Whiting Spawning Stock Survey Spring 2009

      Marine Institute; Institute of Marine Research; University College Cork; PINRO; Faroese Marine Research Institute; Institute for Marine Resources & Ecosystem Studies; FRS Marine Laboratory; Federal Research Institute for Fisheries; Irish Whale and Dolphin Group; Sea Mammal Research Unit, Scotland; et al. (Marine Institute, 2009)
      In spring 2009, five research vessels representing the Faroe Islands, Ireland, the Netherlands, Norway and Russia surveyed the spawning grounds of blue whiting west of the British Isles. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the sixth coordinated international blue whiting spawning stock survey since 2004. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (F. Nansen: Oganin et al. 2009; Celtic Explorer: O’Donnell et al. 2009; M. Heinason: Jacobsen et al. 2009; Tridens: Ybema et al. 2009; Holst et al. 2009). This report is based on a workshop held after the international survey in Galway, 22-24/4/2009 where the data were analysed and the report written.
    • International Blue Whiting Spawning Stock Survey Spring 2010

      Marine Institute; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Institute for Marine Resources & Ecosystem Studies; FRS Marine Laboratory; Federal Research Institute for Fisheries; Danish Institute for Fisheries Research (Marine Institute, 2010)
      In spring 2010, five research vessels representing the Faroe Islands, Ireland, the Netherlands, Norway and Russia surveyed the blue whiting spawning grounds to the west of the UK and Ireland. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the seventh coordinated international blue whiting spawning stock survey since 2004. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (F. Nansen: Rybakov et al. 2010; C. Explorer: O’Donnell et al. 2010; M. Heinason: Jacobsen et al. 2010; Tridens: Couperus et al. 2010) This report is based on correspondence undertaken after the International survey by all participants and during the post cruise meeting held in Bergen from May 3-4 with participation from Ireland and Norway.
    • International Blue Whiting Spawning Stock Survey Spring 2011

      Marine Institute; Institute for Marine Resources & Ecosystem Studies; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research (Marine Institute, 2011)
      In spring 2011, five research vessels representing the Faroe Islands, European Union (Ireland and the Netherlands), Norway and Russia surveyed the blue whiting spawning grounds to the west of the UK and Ireland. International co-operation allows for wider and more synoptic coverage of the stock and more rational utilisation of resources than uncoordinated national surveys. The survey was the eighth coordinated international blue whiting spawning stock survey since 2004. The primary purpose of the survey was to obtain estimates of blue whiting stock abundance in the main spawning grounds using acoustic methods as well as to collect hydrographic information. Results of all the surveys are also presented in national reports (F. Nansen: Rybakov et al. 2011; C. Explorer: O’Donnell et al. 2011; M. Heinason: Jacobsen et al. 2011; Tridens: Fässler et al. 2011). This report is based on correspondence undertaken after the international survey by all participants and during the post cruise meeting held in Copenhagen from April 27-29, with representatives from all participating nations present.
    • Northwest Herring Acoustic Survey Cruise Report and Abundance Estimate, 2007

      O'Donnell, C; Egan, A; Lynch, D; Boyd, J; Wall, D; Goddjin, L (Marine Institute, 2007)
      The northwest and west coast herring acoustic survey programme was first implemented in 1994, with the current winter spawning survey representing the 9th in the time series. The stock in this area is composed of 2 spawning components (autumn and winter), covering a large geographical area. Spawning occurs over a protracted period of over 4-months from late September through to late March. The age profile of the survey stock as generated from trawl samples indicated ages ranging from 1-7 years. Maturity samples indicate the largest proportion of the stock to be in a pre-spawning, spawning or spent state, with small amounts of immature fish, as would be expected at this time. The 2007 survey estimate generated a TSB (total stock biomass) of 14,200 t relating to a SSB (spawning stock biomass) of 13,974 t. Poor weather dominated the survey with almost 25% lost in downtime. As a result the survey area and track lines had to be reduced to compensate and hydrographic stations had to be sacrificed. The poor weather experienced no doubt had an impact on herring schooling behaviour and our detection ability.
    • Northwest Herring Acoustic Survey Report 18 June – 07 July, 2011

      Saunders, Ryan; O'Donnell, Ciaran; Campbell, Andrew; Mullins, Eugene; Sullivan, Mairead; McKeogh, Enda (Marine Institute, 2011)
      The northwest and west coast (ICES Divisions VIaS & VIIb, c) herring acoustic survey programme was first established in 1994. Prior to acoustic estimation, a larval survey programme was conducted from 1981-1986. In the early 1990s, the ICES herring working group (HAWG) identified the need for a dedicated herring acoustic survey in this area (Anon, 1994). From 1994 to 1996 surveys were carried out on this stock during the summer feeding phase. In 1997 a two-survey spawning survey was established covering both autumn and winter components. In 2004, this was modified into single spawning stock survey was carried out early in quarter 1 which continued until 2007. In 2008, it was decided that this survey should be incorporated into the larger coordinated Malin shelf survey on recommendation from SGHERWAY and WGHAWG. The summer 2011 survey represents the forth in the new time series (est. in 2008). The Irish component was carried out to cover, 1) the regions around western Ireland 2) the regions west of Scotland that are usually covered Marine Scotland and 3) northern sector of the Irish Sea survey (AFBI). The survey was coordinated through the ICES Working Group of International Pelagic Surveys (WGIPS). Combined survey data on herring distribution, abundance and age are used to provide a measure of the relative abundance of herring within the Malin shelf stock complex. Survey data on stock numbers at age are submitted to the ICES Herring Assessment Working Group (HAWG) and used in the annual stock assessment process. The northwest and west coast (ICES Divisions VIaS & VIIb) herring stock is composed of 2 of spawning components, autumn and winter spawners. Spawning covers a large geographical area and extends over a 4-month period from late September through to late March (Molloy et al, 2000). Traditionally fishing effort has been concentrated on spawning and pre-spawning aggregations. The autumn spawning component, which mostly occurs within VIIb and VIaS, feeds along the shelf break area to the west of the spawning grounds. The winter spawning component is found further north in VIaS. In VIaS, summer distribution extends from close inshore to the shelf break. Components of the winter spawning fish are known to undertake northward feeding migration into VIaN before returning in the winter to spawn along the Irish coast.
    • Northwest Herring Acoustic Survey Report 2004

      O'Donnell, Ciaran; Mullins, Eugene; Egan, Afra; Smith, Turloch; Bunn, Robert; Griffin, Karen; O’Driscol, Patrick; Bicknell, Simon; O’Driscol, Deirdre; Cross, Marcus; et al. (Marine Institute, 2004)
      The objectives of this survey were to: 1). To assess the size of the herring stock in VIaS and VIIb using an EK60 scientific sounder and a 38 kHz mounted within the vessels drop keel. Observe fish marks along the survey track using 18, 120 and 200 kHz; 2). Collect biological data from herring samples within this area and determine composition of marks using a single pelagic mid-water trawl.
    • Northwest Herring Acoustic Survey Report 2005

      O'Donnell, Ciaran; Mullins, Eugene; Johnston, Graham; Power, Ayesha; Beatie, Susan (Marine Institute, 2005)
      The northwest and west coast herring acoustic survey programme was first implemented in 1994. Prior to this a larval survey programme was carried out between 1981 and 1986. The ICES herring working group (HAWG) identified the need for a dedicated herring acoustic survey in this area (Anon, 1993). The stock in this area is composed of a number of spawning components and spawning may extend from September through to March (Molloy et al, 2000). Commercial fishing has targeted the fish during spawning times, no summer matje fishery exists in this area. In VIaS, fishing has traditionally taken place in late December and continues until late February (winter spawners). Traditionally in VIIb, fishing is mainly concentrated on the later months of the year and would be concluded by the early part of the new year (Autumn spawners). The protracted spawning period of herring and the overlap between the two spawning socks in this area (October to February) means that it is difficult to design a survey that covers all spawning fish in one specific survey. A project is currently underway to describe stock structure and discrimination of herring around Ireland. The results of this project may have implications for the design of this survey and for the stock assessment. However, since 1994, acoustic surveys have been carried out, and currently are the only tuning indices available. The current survey makes up the 11th in the time series. The design and execution of this survey has evolved from summer feeding phase surveys, in the mid 1990s until its present winter spawning state.