Identification

Title

1994 - 1994 Centre for Environment, Fisheries & Aquaculture Science (Cefas) English Channel and North Sea Plankton Survey - RV Cirolana 01/94

Abstract

This survey was carried out in January 1994 in the Eastern English Channel and Southern North Sea to study the transport, feeding and condition of herring larvae. Plankton samples were collected at each site on the survey grid. This data consists of the numbers of herring larvae and other zooplankton, along with associated positional data and volumes filtered.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/2561/

function: order

Unique resource identifier

code

CEFAS374d428d-cf4b-4c0e-98ec-e7c6e9a573fe

codeSpace

http://www.cefas.co.uk/

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4326

Classification of spatial data and services

Topic category

biota

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

-5.5

East bounding longitude

5

North bounding latitude

53.75

South bounding latitude

49

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Temporal reference

Temporal extent

Begin position

1994-01-06

End position

1994-01-19

Dataset reference date

date type

publication

effective date

2020-01-28

Frequency of update

notPlanned

Quality and validity

Lineage

A fine mesh (35 micron) auxiliary net was fitted to the 76cm plankton sampler and was used to take 31 samples for analysis of potential food organisms for herring larvae - the sampler was later lost on 9th January so future samples were taken using the dual Longhurst-Hardy Plankton Recorder system (270/20 micron aperture mesh) A Focus Instruments Optical Plankton Counter was fitted on the Longhurst-Hardy Plankton Recorder body in place of the fine mesh sampling system for trials and was also fitted with the coarse mesh system for comparison for sampling in the herring larvae patches. Data storage: The raw data were stored on 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.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Constraint set

Limitations on public access

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Responsible organisations

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2020-01-28T09:35:40

Metadata language