Identification

Title

2019 - 2019 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Nutrient data for autumn 2018 and spring 2019 in the Celtic Sea

Abstract

Nutrient concentration data collected on the RV Cefas Endeavour as part of CEND17_18, CEND03_19 and CEND04_19, including concentrations of nitrite, nitrate, ammonia, phosphate and silicate. Samples were collected for use in eutrophication assessments and to test the Ferrybox water sampler. Samples were collected using three different methods: ( 1.)Manually from the continuous flow (CF) with mercuric chloride added. ( 2.)Manually from the continuous flow then frozen. ( 3.)Automatically with a water sampler attached to the Ferrybox with mercuric chloride added.

Resource type

dataset

Resource locator

Unique resource identifier

code

CEFAS411ef843-7882-4931-9a70-c4c4cec51bd4

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

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Geographic location

West bounding longitude

1.73881

East bounding longitude

1.74086

North bounding latitude

52.4595

South bounding latitude

52.4581

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

2019-10-06T23:00:00.000Z

End position

2019-04-11T23:00:00.000Z

Dataset reference date

date type

publication

effective date

2021-07-08

Frequency of update

notPlanned

Quality and validity

Lineage

Sample collection methods ( 1.)Manual CF mercuric chloride. Samples were collected from the surface underway system into 1 litre polyethylene bottles. A subsample was filtered through a glass microfibre GF/F filter and the sample was preserved with mercuric chloride to give a final concentration of 20 mg/l. Samples were refrigerated until analysis. ( 2.)Manual CF frozen. Samples were collected directly from the surface underway system into polycarbonate sample bottles and frozen at -20 deg C until analysis. ( 3.)Water sampler mercuric chloride. 150ml water samples were collected from the surface underway system using an automated Cefas Technology Limited water sampler into polyethylene bags which had mercuric chloride added, to give a final concentration of 47 mg/l. Samples were refrigerated until analysis. Sample analysis methods. All samples were sent to the nutrients laboratory at the University of East Anglia for analysis of nutrient concentrations. Samples were analysed on a Skalar continuous flow analyser using the methods detailed by Skalar.

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

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

2021-07-08T13:24:56

Metadata language