Show simple item record

dc.contributor.authorDoyle, J.
dc.contributor.authorLordan, C.
dc.contributor.authorFitzgerald, R.
dc.contributor.authorO'Brien, S.
dc.contributor.authorAllsop, C.
dc.contributor.authorKelly, C.
dc.contributor.authorMcArdle, J.
dc.date.accessioned2017-01-24T12:54:23Z
dc.date.available2017-01-24T12:54:23Z
dc.date.issued2016
dc.identifier.citationDoyle, J., Lordan, C., Fitzgerald, R., O’ Brien, S., Allsop, C., Kelly, C., and McArdle, J. (2016). Porcupine Bank Nephrops Grounds (FU16) 2016 UWTV Survey Report and catch options for 2017. Marine Institute UWTV Survey report.en_GB
dc.identifier.urihttp://hdl.handle.net/10793/1185
dc.description.abstractThis report provides the results of the fourth underwater television on the ‘Porcupine Bank Nephrops grounds’ ICES assessment area; Functional Unit 16. The survey was multi-disciplinary in nature collecting UWTV, CTD 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 2016, adjusted for edge effect, was 0.13 burrows/m². The final krigged abundance estimate was 958 million burrows with a relative standard error of 4% and an estimated stock area of 7,108km2. The 2016 abundance estimate was 32% higher than in 2014. There was no UWTV survey in 2015 due to vessel breakdown prior to survey. Using the 2016 estimate of abundance and updated stock data implies catch of 3,100 tonnes and landings of 3,100 tonnes in 2017 when MSY approach is applied (assuming that all catch is landed). The three species of sea-pen; Virgularia mirabilis, Funiculina quadrangularis and Pennatula phosphorea, were all observed during the survey. The deepwater sea-pen Kophobelemnon stelliferum was also observed and its presence/absence mapped from the available time-series. Trawl marks were also observed on 30% of the stations surveyeden_GB
dc.language.isoenen_GB
dc.publisherMarine Instituteen_GB
dc.relation.ispartofseriesMarine Institute UWTV Survey report;2016
dc.subjectNephrops norvegicusen_GB
dc.subjectPorcupine Banken_GB
dc.subjectstock assessmenten_GB
dc.subjectgeostatisticsen_GB
dc.subjectunderwater television (UWTV)en_GB
dc.subjectsea-pensen_GB
dc.subjectbenthosen_GB
dc.subjectCV16022
dc.titlePorcupine Bank Nephrops Grounds (FU16) 2016 UWTV Survey Report and catch options for 2017en_GB
dc.title.alternativeCV16022en
dc.typeTechnical Reporten_GB
refterms.dateFOA2018-01-12T05:55:56Z


Files in this item

Thumbnail
Name:
Survey Report Porcupine UWTV ...
Size:
2.480Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record