Porcupine Bank Nephrops Grounds (FU16) 2020 UWTV Survey Report and catch scenarios for 2021
dc.contributor.author | Aristegui, M. | |
dc.contributor.author | Blaszkowski, M. | |
dc.contributor.author | Doyle, J. | |
dc.contributor.author | Hehir, I. | |
dc.contributor.author | Lynch, D. | |
dc.contributor.author | Ryan, G. | |
dc.contributor.author | Lordan, C. | |
dc.date.accessioned | 2020-11-19T17:03:22Z | |
dc.date.available | 2020-11-19T17:03:22Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Aristegui, 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.uri | http://hdl.handle.net/10793/1655 | |
dc.description.abstract | This 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.iso | en | en_US |
dc.publisher | Marine Institute | en_US |
dc.relation.ispartofseries | Marine Institute UWTV Survey report; | |
dc.subject | Nephrops norvegicus | en_US |
dc.subject | Porcupine Bank | en_US |
dc.subject | stock assessment | en_US |
dc.subject | geostatistics | en_US |
dc.subject | underwater television (UWTV) | en_US |
dc.subject | sea-pens | en_US |
dc.subject | benthos | en_US |
dc.subject | CV20017 | en |
dc.title | Porcupine Bank Nephrops Grounds (FU16) 2020 UWTV Survey Report and catch scenarios for 2021 | en_US |
dc.title.alternative | CV20017 | en |
dc.type | Technical Report | en_US |
refterms.dateFOA | 2020-11-19T17:03:23Z |