Joint Nutrient Study (Jonus) II Plankton Survey
The Jonus II programme was run to examine impacts of nutrients on the coastal pelagic community and consisted of a series of 7 individual cruises using RV Cirolana and the charter vessel Lough Voyager. The survey was conducted in the southern North Sea, the Thames Estuary, The Wash, the Irish and Celtic Sea, the South-Western Approaches and the western English Channel. As part of the survey aims phytoplankton and zooplankton samples were collected. This data consists of the numbers of microzooplankton, along with associated positional data and volumes filtered.
dataset
https://data.cefas.co.uk/view/2637
name: Cefas Data Portal
description: The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: CSV, ESRI Shapefile. The data can also be accessed via the WFS and WMS protocols.
function: download
CEFAS2637
https://data.cefas.co.uk
eng
biota
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
revision
2010-05-18
publication
2012-01-11
publication
2012-01-11
-12.00
5.00
55.25
47.00
1996-07-26
1997-08-13
publication
2013-12-10
revision
2023-10-31
creation
2013-07-25
notPlanned
Samples were collected using a ring net with a 50 cm diameter opening, and an unencased high speed plankton sampler with a 270 um mesh net. 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.
publication
2013-12-10
false
See the referenced specification
publication
2010-12-08
true
See the referenced specification
Unknown
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
originator
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
custodian
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
distributor
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
owner
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
pointOfContact
2023-10-31T12:19:44