Marine

2019 Nephrops norvegicus UWTV Survey – Last weblog


2019 Nephrops norvegicus UWTV Survey 

CV19022

twenty first – twenty eighth August  

Determine 1. Nephrops norvegicus in burrows.

Day 7 and the crew proceed to steam from station to station recording UWTV footage alongside the Labadie N. norvegicus grounds. At this stage, we’re approaching the ultimate few stations, and anticipating to achieve our remaining station on Tuesday, early am.  

At current, a number of the work is changing into closely oriented in direction of reviewing the footage and counting burrows. As talked about within the first weblog, Nephrops burrows within the UWTV footage have to be recognized accurately and counted precisely to find out the abundance calculation. There are high quality management and assurance procedures on how and what to rely, and the minimal variety of counters required. The scientists rely in isolation and independently of one another. After counts have been accomplished, there are extra impartial counts, which have to be carried out, to account for any discrepancies between counts. Lin’s Concordance Correlation is used to confirm which stations will wanted to be re-counted, and if a 3rd or fourth scientist will probably be required to re-count these stations. For consensus counting, scientists agree on a threshold of distinction in burrows. 
Determine 2. Nephrops norvegicus on the seafloor.

In between steaming from station to station and burrow counting, the crew at occasions, attempt to get exterior for some contemporary air and solar. Immediately, we have been fortunate, and had the possibility to watch a pod of Dolphins bow driving alongside the RV Celtic Voyager. On this survey, I’ve noticed dolphins swim alongside the vessel most afternoons and evenings, and it may be fairly hypnotising to observe them, and their behaviours. In addition to dolphins, there have been alternatives to watch different marine megafauna, with sea birds, specifically Northern Gannets, Fulmars, Storm Petrels and Manx Shearwaters, following us for a lot of the journey.
Determine 3a. Marcin, John and I 

Determine 3b. John and Dermot 
Determine 3c. Marcin out on deck.

Determine 4. Pod of frequent dolphins’ bow driving the Celtic Voyager.

Determine 5. Dolphin and fowl watching: John 

 

Determine 5. Dolphin and fowl watching: me

We at the moment are on the finish, and what an journey this has been. By Day 8, the crew collectively, have managed to seize over 16 hours of HD video footage, cowl a distance of roughly 250 metres (0.13 nm) of seabed, representing an space of roughly 10,014 km2. Depths have ranged from 70 to 140 meters. We’ve got seen some great footage from the 100 stations across the Labadie Nephropsgrounds within the Celtic sea. 
Determine 6. Fish swimming alongside the seafloor.
Determine 7. A solid of Hermit crabs on the seafloor.
Determine 7. A solid of Hermit crabs on the seafloor.
Determine 8. Conger eels on the seafloor
Determine 8. Conger eels on the seafloor
Determine 9. Monkfish (left) and anemone (proper) on the seafloor.
Determine 10. Monkfish on the seafloor.

 

Determine 11. Megrim on the seafloor.

Determine 12. Nephrops norvegicus on the seafloor.

I wish to thank the Marine Institute and SMART Sea College for offering me with the chance to participate within the UWTV survey. An enormous because of Dr. Jonathan White and John Boyd (SMART) for accepting my utility and welcoming me to affix the survey. I might additionally wish to thank Jonathan, for permitting me to work alongside him on the UWTV footage shifts. I realized reams of data from Jonathan and I very a lot loved my time working with him. Additionally, thanks for offering the ice-cream to the crew, at intervals all through the cruise, it added a really good contact to the general expertise.

Thanks to Marcin for being a wonderful cabin mate, who on day one, when he realised this was my first survey, he instantly supplied the underside bunk, and knowledgeable me that it will be much less rocky out at sea, than the highest. This meant lots to me, because it was my first time on an 8-day cruise and I used to be unsure what to anticipate, however fortunately, I discovered my sea legs fairly quick. 

Thanks to Mikel for demonstrating the usage of the UWTV and counting software program and serving to me get the UWTV pictures from the server, to my laptop computer. Thanks to John for serving to me determine among the marine species noticed in footage and to Dermot for answering any questions I had and for stating among the marine animals he got here throughout when reviewing the footage. 

Thanks all, for enthusiastically answering any questions I had alongside the best way. There are a lot of extra causes to thank the crew and I’ve been fortunate to have the chance to work alongside them, and I’ve gained an immense quantity of data and information on this analysis journey.

Lastly, thanks to the P&O crew who assisted the scientific crew all through, with crusing, sediment grabs, deploying and retrieving UWTV, aiding with any technical points that occurred, in addition to feeding us. Thanks very a lot.

The sheer quantity of labor that should go in to organising these surveys, how the UWTV surveys function and why these surveys are essential, in addition to, the significance of Nephrops and how you can determine their burrows from UWTV footage, are just some of the various issues I’ll take away with me from this survey. It has been an exquisite expertise, and I hope to have extra comparable alternatives sooner or later.

Determine 13. Sundown on the Celtic Sea


Weblog by Dean Anthony Notaro

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