Show simple item record

dc.contributor.authorAristegui, M.
dc.contributor.authorDoyle, J.
dc.contributor.authorO’ Brien, S.
dc.contributor.authorTully, D.
dc.contributor.authorMcAuliffe, M
dc.contributor.authorFitzgerald, R.
dc.contributor.authorFee, D.
dc.contributor.authorO'Connor, S.
dc.contributor.authorGalligan, S.
dc.contributor.authorBlaszkowski, M.
dc.contributor.authorButler, R.
dc.contributor.authorWhite, J.
dc.date.accessioned2020-11-19T17:01:15Z
dc.date.available2020-11-19T17:01:15Z
dc.date.issued2020
dc.identifier.citationAristegui, M., Doyle, J., O’Brien, S., Tully, D., McAuliffe, M., Fitzgerald, R., Fee, D., O’Connor, S., Galligan, S., Blaszkowski, M., Butler, R., and White., J. (2020). FU19 Nephrops Grounds (FU19) 2020 UWTV Survey Report and catch scenarios for 2021. Marine Institute UWTV Survey report.en_US
dc.identifier.urihttp://hdl.handle.net/10793/1654
dc.description.abstractThis report provides the main results of the eleventh underwater television survey of the various Nephrops patches in Functional Unit 19. The survey was multi-disciplinary in nature collecting UWTV, multi-beam and other ecosystem data. In 2020 a total 42 UWTV stations were successfully completed. The mean density estimates varied considerably across the different patches. The 2020 raised abundance estimate was a 20% decrease from the 2019 estimate and at 320 million burrows is below the MSY Btrigger reference point (430 million). Using the 2020 estimate of abundance and updated stock data implies catch in 2021 that correspond to the F ranges in the EU multi annual plan for Western Waters are between 531 and 595 tonnes (assuming that discard rates and fishery selection patterns do not change from the average of 2017–2019). Two species of sea pen were observed; Virgularia mirabilis and Pennatula phosphorea which have been observed on previous surveys of FU19. Trawl marks were observed at 26% 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.subjectstock assessmenten_US
dc.subjectgeostatisticsen_US
dc.subjectbenthosen_US
dc.subjectunderwater television (UWTV)en_US
dc.titleFU19 Nephrops g rounds 20 20 UWTV s urvey r eport and catch scenarios for 2021en_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-11-19T17:01:19Z


Files in this item

Thumbnail
Name:
FU19 Survey Report UWTV 2020.pdf
Size:
1.803Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record