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Fisheries
Fisheries

Marine Scotland manages quota for fish stocks and all inshore fisheries within the 12 nautical mile territorial water limit. It is also responsible for controlling the activities of fishing vessels and fishing effort (days spent at sea) in the North Sea, west of Scotland and Faroese waters.
In this section, citable data and reports relevant to fishing activities will be added.

License

UK Open Government Licence (OGL)

Other Access

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Greater North Sea English Beam Trawl Quarter 3 Groundfish Survey Monitoring and Assessment Data Products

The Greater North Sea English Quarter 3 Beam Trawl Groundfish Survey Monitoring and Assessment Data resource contains both biological and sampling information. There are two sampling areas a “Full” data set, this includes rectangles that have a poor temporal sampling record. The “SSA” or “Standard Survey Area” sampling area only contains rectangles that have consistent temporal sampling and meet the criteria set out in Moriarty et al, (2017).
The “sampling information” contains all the technical information required to describe each individual haul. The “biological information” contains all of the biological information required to describe the species length and weight distributions in each haul. Biological information is further classified by “baseline” data. This data contains a mix of species, genus, and family classifications, with a tag to say if it required further assessment and “null” length values, with a tag to say a length frequency distribution needs to be assigned. The “k-NN” or “k” number of nearest neighbours data has reconciled all of the taxonomic data to the highest resolution possible, and assigned an appropriate length distribution to the sample in question.

Product type:
• This product is the Standard Survey Area - Standard Monitoring Programme this is the recommended product for all analyses.
• This product is the knn/resolved product which is recommended for all analyses.

Acknowledgements
Gary Burt, CEFAS
Vaishav Soni, ICES Data Centre
Internatioanl Council for the Exploration of the Sea (ICES)

doi: 
10.7489/1966-1
Citation: 
Moriarty, M., Greenstreet, S. 2017. Greater North Sea English Beam Trawl Quarter 3 Groundfish Survey Monitoring and Assessment Data Products. doi: 10.7489/1966-1
fisheries
fish abundance
fish biomass
FieldValue
Publisher
Fisheries
Modified
2020-01-07
Release Date
2017-10-10
Identifier
c91f7b6b-c97c-4b3f-b5e6-971283613b63
Spatial / Geographical Coverage Location
Greater North Sea
Temporal Coverage
1990-01-01 to 2016-12-31
Language
English (United Kingdom)
License
UK Open Government Licence (OGL)
Data Dictionary

Data quality statement:
This data product has undergone rigorous quality checking, as outlined in the supporting documentation (Moriarty et al, 2017; Greenstreet et al 2017). It is suitable for supporting OSPAR fish community assessments and additional indicator research and development.

Data source:
Data was sourced on the Database of Trawl Surveys (DATRAS) housed by ICES, this data is traditionally used for stock assessments and fish community studies by the ICES community and public users. The ICES data have to pass an extensive quality check.

Collection methods:
The data was collected by CEFAS during their North Sea Beam Trawl Survey (BTS) coordinated by the Beam Trawl Survey Working Group.

Data processing methods:
While DATRAS has an integrated quality check, it was necessary to do a more extensive quality check and estimate certain values when data was not originally collected. The processing methods are fully outlined in Moriarty et al (2017).
Contact Name
Marine Scotland Science
Contact Email
marinescotland@gov.scot
Public Access Level
Public
Related Content: 
ICES DATRAS
Manual for Version 3 of the Groundfish Survey Monitoring and Assessment Data Product
Derivation of Groundfish Survey Monitoring and Assessment Data Product for the Northeast Atlantic Area