1902 - 1970 Centre for Environment, Fisheries & Aquaculture Science (Cefas) CEFAS Historic surveys - 1902 to 1970
Station and biological data collected during research surveys carried out by Cefas (formerly Directorate of Fisheries) in seas around the UK, mostly in the North Sea, since 1902. The survey hauls are not laid out systematically as a grid, as in current International Bottom Trawl Surveys (IBTS) and are widely distributed over (especially) southern and central North Sea areas. Gears and protocols were not standardised throughout, due to the long term nature of the series. Surveys took place in each season. Data are lacking for the periods of both World Wars. In some periods (e.g. the early 1900s), all species caught were recorded, whereas in other periods (e.g. 1920s-30s), only the key commercial species (e.g., Plaice, Sole and Cod) were recorded systematically. Note that some surveys targeted particular species (notably Plaice).
series
CEFAS053ae9c1-e65c-415a-91c8-cc61a6f611c6
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4030
`http://data.cefas.co.uk/#/View/3930`_ .. _`http://data.cefas.co.uk/#/view/3930`: http://data.cefas.co.uk/#/View/3930
biota
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
-70
80
90
10
revision
2010-05-18
1902
1970-01-01T00:00:00.000Z
publication
2020-08-05
notPlanned
Surveys range from 1902 until the 1970s. Over the decades, at least 11 different Research Vessels (RVs) carried out surveys using different gear deployments and catch sampling protocols over time. Early, steam-powered vessels towed the trawl at a speed of approximately 2 knots, whereas in current, diesel-powered vessels this is standardised at 4 knots. The data constitute a highly valuable information source, however, owing to the above, data analysis and interpretation requires caution. Species and Gear code lists are available via the additional information source field.
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
originator
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
custodian
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
pointOfContact
2020-08-05T10:40:15