CV17021 Nephrops Underwater TV (UWTV) Celtic Sea Survey - Leg 2

Annual second leg underwater television (UWTV) survey of abundance and distribution of Nephrops in the Celtic Sea Nephrops Grounds. The prawn (Nephrops norvegicus) are common in the Celtic Sea occurring in geographically distinct sandy/muddy areas where the sediment is suitable for them to construct their burrows. The Celtic Sea area supports a large multi-national targeted Nephrops fishery mainly using otter trawls. This survey was carried out by the Marine Institute on board the R.V. Celtic Voyager in August 2017 in the Celtic Sea. A total of 40 UWTV stations were surveyed successfully (good quality video footage), carried out over an isometric grid at 4.5nmi or 8.3km intervals. Mean density was calculated by dividing the total number of burrow systems by the survey area observed. Ten beam trawl tows were conducted providing important data on the benthic communities and size structure of the Nephrops population. All Nephrops caught were sorted by sex and maturity category, weighed and measured using the NEMESYS electronic measuring system. The fish catch was identified to species level and sampled by weight (kgs) only. The benthic catch was identified and weighed (g) and counted. No Conductivity, Temperature and Depth (CTD) data was collected during this survey due to technical problems. 1. To complete randomised fixed isometric survey grid of 40 UWTV with 4.5 nautical mile (nmi) spacing stations on the “Smalls” Nephrops ground (FU22). 2. To obtain 2017 quality assured estimates of Nephrops burrow distribution and abundance on the "Smalls” Nephrops ground 3. To collect ancillary information from the UWTV footage collected at each station such as the occurrence of sea-pens, other macro benthos and fish species and trawl marks on the sea bed. 4. To sample Nephrops and macro benthos using a 4 m beam trawl deployed at ~10 stations.

Simple

Date (Publication)
2018-01-15
Date (Revision)
2023-06-01
Date (Creation)
2018-01-15
Citation identifier
ie.marine.data:dataset.1939
Point of contact
Organisation name Individual name Electronic mail address Role

Marine Institute

datarequests@marine.ie

Originator
Maintenance and update frequency
As needed
SeaVoX Device Catalogue
SeaDataNet device categories
ICES Platform Categories
OGC Simple Feature Types
SeaVoX Platform Categories
Marine Strategy Framework Directive indicators 2010/477/EU
SeaDataNet Parameter Discovery Vocabulary
Marine Institute Dataset Communities
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While every effort is made in preparing the dataset no responsibility is accepted by or on behalf of the Marine Institute for any errors, omissions or misleading information. The Marine Institute accepts no responsibility for loss or damage occasioned or claimed to have been occasioned, in part or in full, as a consequence of any person acting, or refraining from acting as a result of a matter contained in this datasets or as a consequence of using this dataset for any purpose whatsoever.

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A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted work. A CC license is used when an author wants to give people the right to share, use, and build upon a work that they have created. Under Creative Commons CC BY 4.0 the following is granted: Rights Share — copy and redistribute the material in any medium or format; Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Requirements Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

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CC%20BY%204.0
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Association Type
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Aggregate Datasetindentifier
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Association Type
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Initiative Type
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Aggregate Datasetindentifier
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Association Type
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Association Type
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Aggregate Datasetindentifier
ie.marine.data:dataset.848
Association Type
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Initiative Type
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Spatial representation type
Grid
Language
English
Begin date
2017-08-09
End date
2017-08-18
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Reference system identifier
INSPIRE RS registry / http://www.opengis.net/def/crs/EPSG/0/3857
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://www.marine.ie
Hierarchy level
Dataset

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Explanation

See the referenced specification
Pass
Yes
Statement

Data supplied by Marine Institute.

Metadata

File identifier
ie.marine.data:dataset.1939 XML
Metadata language
English
Hierarchy level
Collection session
Date stamp
2025-02-21T18:23:14.647799Z
Metadata standard name

ISDI Metadata Profile
Metadata standard version

1.2
Metadata author
Organisation name Individual name Electronic mail address Role

Marine Institute

datarequests@marine.ie

Point of contact
 
 

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