1987 - 1987 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Southern North Sea And English Channel Plankton Survey - RV Cirolana 01/87
This survey was carried out in January 1987 as part of the International Council for the Exploration of the Sea (ICES) co-ordinated herring larval survey of regions IVc and VIId (southern North Sea and eastern English Channel). Plankton samples were collected at each site on a planned survey grid. Clupeid larvae were identified and enumerated. Associated positional data and volumes filtered also included.
dataset
http://data.cefas.co.uk/#/View/2538/
function: order
CEFAS249652aa-656e-47a4-85d4-aa371d07b1cf
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4326
biota
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
-2
5
53
49
revision
2010-05-18
1987-01-03
1987-01-16
publication
2016-07-14
notPlanned
The Methot/Isaacs Kidd midwater trawl was used to sample large herring larvae. Additionally, auxilliary net samples with the 35 micron mesh on the standard sampler were taken at each larvae station. Data storage: The raw data were stored in an Access database. The various data files were stored on the database in a series of tables linked by having the content of certain fields in common. All routine calculations, calibration changes and conversions were carried out on the database. The data tables (but not queries) have now been extracted into text files. Plankton data are normally expressed as either number of organisms per m3 or per m2. The number per m3 is obtained by dividing the numbers per sample by the volume filtered, calculated from the sampler flowmeters. Number per m2 is obtained by multiplying the number per m3 by the mean sampled depth during a deployment.
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
2016-07-14T12:28:23