1992 - 1996 Centre for Environment, Fisheries & Aquaculture Science (Cefas) A comparison of benthic biodiversity in the North Sea, English Channel and Celtic Seas. Epifauna trawl sampling 1992-1996
<span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> Samples were obtained by MAFF research vessels from 69 stations between 1992-1996. A 2-m Lowestoft beam trawl with a 3 mm cod-end liner was deployed for 5–10 min across each station at a speed of about 0.5 m/s. Data includes information of the species found at each station. The start and end of the haul positions were recorded. Tow length averaged about 400 m, but varied substantially (s.d.=290) depending on tidal current velocity and wind strength at the time of sampling. On retrieval of the trawl, an estimate of sample volume was made, along with a summary of the contents, noting especially the presence of stones, rock, etc. The sample was then sorted on deck over a 5 mm mesh sieve.
dataset
http://data.cefas.co.uk/#/View/20628/
function: order
CEFAS6be9866e-dc0a-4e57-9f6c-de7bff72793c
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4326
<span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span>
biota
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
-8
4
58.5
49
revision
2010-05-18
revision
2010-05-18
revision
2010-05-18
1992-05-11T23:00:00.000Z
1996-07-08T23:00:00.000Z
publication
2020-08-11
notPlanned
Most specimens were identified and enumerated at sea. Any problematic specimens were preserved in formalin for identification on land. The presence of infaunal organisms arising from the fouling of soft sediments, and pelagic species such as jellyfish were noted. However, these records were excluded from the final compilation of the data. Motile taxa not dealt with at sea were identified to species level, as far as possible, using a range of standard taxonomic keys. Nomenclature followed that of Howson (1987). A ranked descriptor of the predominant substratum type along trawl tows was derived from a combination of records of trawl contents, particle size analyses of sediments from grabs where available, and information from Admiralty Charts.
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
2020-08-11T13:33:46