37 returned results for 'nephrops'

  • Camera Trials and Nephrops Trawls – An Update

    After a timely departure from Fraserburgh on Saturday the 5th of January, Alba na Mara sailed for the west coast to carry out underwater TV work on Nephrops grounds. The first task involved deploying a time lapse camera, attached to a large frame, in Upper Loch Torridon.  This was followed by a short steam to…

    21st January 2019

  • Camera Trials and Nephrops Trawls

    Survey: 0119A Alba na Mara Programme Duration: 05 – 21 January 2019 Objectives: Calibrate the RoxAnn Acoustic Seabed Mapping System. Obtain video footage to estimate Nephrops burrow entrance size. Compare two different methodologies to establish Nephrops burrow abundance using the sledge and drop frame underwater TV (UWTV) systems. Monitor burrow reconstruction following trawl activity. Trial…

    16th January 2019

  • A Tall Ship Amongst the Nephrops

    Survey: 1318A MRV Alba na Mara Duration: 25th August – 10th September 2018 Another busy week of TV deployments aboard Alba na Mara for the Nephrops Underwater TV (UWTV) Survey. This weeks efforts were concentrated in the Firth of Forth where we managed a total of 56 TV stations and two fishing operations. Poor visibility…

    14th September 2018

  • How Mature are Nephrops?

    Survey : 1318A MRV Alba na Mara Duration: 25 August – 10 September 2018 Objectives: Obtain estimates of the distribution and abundance of Nephrops burrows in the Firth of Forth and the Moray Firth using underwater cameras. Use the TV footage to record the occurrence of other benthic fauna and evidence of commercial trawling activity….

    4th September 2018

  • So, how were the nephrops?

    At the beginning of January, we blogged about the research adventures of the Alba na Mara as she went off in search of nephrops. The Scientist in Charge of that survey got back in touch with us to let us know how they’d got on: The west coast TV survey abroad Alba na Mara spent…

    19th January 2018

  • Watching nephrops on TV

    Duration: 6 – 22 January 2018 Gear Large TV drop frame TV sledge 1 x 600m umbilical towing cable 1 x armoured cable Video cameras and associated equipment (plus backup) Four lasers and 60cm bracket for the drop frame 1 x BT201 prawn trawl (plus minimal spares) Day grab and table Prawn sorting table Go…

    5th January 2018

  • Report of Fishing Industry Science Alliance (FISA) Project: Effects of Codend Mesh Size and Twine Number on Nephrops Selectivity

    Experimental fishing trials carried out on the West Coast have shown that the selectivity of Nephrops improves as the mesh size increases from 80 to 100 and to 120 mm. Similarly, more juvenile whiting and haddock also escape as the mesh size increases. The results provide more information on the selectivity of Nephrops in towed fishing…

    18th March 2015

  • MRV Scotia; Survey 0714S – Nephrops Television Survey Update

    It’s been over a week since we left Aberdeen on a grey, foggy day. Normally, at this time of year, these conditions would not be warmly welcomed. However a) we sailed from Aberdeen so didn’t expect much better, and b) these features meant there would be very little wind, which is ideal for the annual…

    17th June 2014

  • MRV Scotia; Survey 0714S – Nephrops Television Survey

    The MRV Scotia began her annual North Sea and West coast Nephrops Television Survey last week.  The main areas in which the survey will take place are shown in the figure below.  A combination of two approaches will be used to derive the survey positions.  The majority of stations will be generated by employing the…

    13th June 2014

  • Reality TV at its Best

    Survey: 1318A MRV Alba na Mara Duration: 25th August – 10th September 2018 MRV Alba na Mara left Fraserburgh on Sunday the 26th of August, a day later than planned due to poor weather, to begin survey 1318A – the ‘Annual Nephrops Underwater TV (UWTV) Survey’. The areas to be covered are Moray Firth and…

    6th September 2018