1990 - 1990 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Southern North Sea and English Channel Plankton Survey - RV Corystes 01/90
Analysis of plankton samples collected as part of the International Council for the Exploration of the Sea (ICES) coordinated herring larvae survey of ICES Regions IVc and VIId (Southern North Sea and Eastern English Channel). Plankton samples were collected at each site on a planned survey grid. Dataset consists of the numbers and lengths of herring, sprat and pilchard larvae, along with associated positional data and volumes filtered.
dataset
http://data.cefas.co.uk/#/View/2556/
function: order
CEFAScbe0f32a-a6d4-4e1f-a84e-acade4d01413
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
1990-01-04
1990-01-18
publication
2020-01-30
notPlanned
77 plankton samples were collected using a 53cm Gulf-type sampler with 20cm nosecone and MAFF MH82 electronics package for recording flow counts. Herring, sprat and pilchard were sorted and measured from these samples using standard identification techniques. Additional fine mesh (325um) 'pup' samples were also collected but not analysed. 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
2020-01-30T13:23:50