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dc.contributor.authorAristegui, M.
dc.contributor.authorBlaszkowski, M.
dc.contributor.authorDoyle, J.
dc.contributor.authorHehir, I.
dc.contributor.authorLynch, D.
dc.contributor.authorRyan, G.
dc.contributor.authorLordan, C.
dc.date.accessioned2020-11-19T17:03:22Z
dc.date.available2020-11-19T17:03:22Z
dc.date.issued2020
dc.identifier.citationAristegui, M., Blaszkowski, M., Doyle, J., Hehir, I., Lynch, D., Ryan, G. and Lordan, C. (2020). Porcupine Bank Nephrops Grounds (FU16) 2020 UWTV Survey Report and catch scenarios for 2021. Marine Institute UWTV Survey report.en_US
dc.identifier.urihttp://hdl.handle.net/10793/1655
dc.description.abstractThis report provides the results of the eighth underwater television on the ‘Porcupine Bank Nephrops grounds’ ICES assessment area; Functional Unit 16. The survey was multi-disciplinary in nature collecting UWTV and other ecosystem data. In total 65 UWTV stations were successfully completed in a randomised 6 nautical mile isometric grid covering the full spatial extent of the stock. The mean burrow density observed in 2020, adjusted for edge effect, was 0.17 burrows/m². The final krigged abundance estimate was 1264 million burrows with a CV of 4% and an estimated stock area of 7,130 km2. The 2020 abundance estimate was 25% higher than in 2019. Using the 2020 estimate of abundance and updated stock data implies catches between 2653 and 3290 tonnes in 2021 that correspond to the F ranges in the EU multiannual plan for Western Waters (assuming that all catch is landed). Four species of sea-pen; Virgularia mirabilis, Funiculina quadrangularis, Pennatula phosphorea and the deepwater sea-pen Kophobelemnon stelliferum were observed during the survey. Trawl marks were also observed on 22% of the stations surveyed.en_US
dc.language.isoenen_US
dc.publisherMarine Instituteen_US
dc.relation.ispartofseriesMarine Institute UWTV Survey report;
dc.subjectNephrops norvegicusen_US
dc.subjectPorcupine Banken_US
dc.subjectstock assessmenten_US
dc.subjectgeostatisticsen_US
dc.subjectunderwater television (UWTV)en_US
dc.subjectsea-pensen_US
dc.subjectbenthosen_US
dc.titlePorcupine Bank Nephrops Grounds (FU16) 2020 UWTV Survey Report and catch scenarios for 2021en_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-11-19T17:03:23Z


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