Identification

Title

1992 - 1994 Centre for Environment, Fisheries & Aquaculture Science (Cefas) A comparison of benthic biodiversity in the North Sea, English Channel and Celtic Seas. Infauna grab sampling 1992-1994

Abstract

Samples of the benthic macrofauna were collected from MAFF research vessels at each of 25 intermediate and offshore stations around the English and Welsh coastlines between 1992 and 1994. This dataset details the infauna present at each sampling station. At each location, five sediment samples for macrofaunal analysis were collected using a 0.1m ^... Day grab from the central point of a 500 m grid of 9 stations, the latter being sampled for contaminant analyses only. The five replicates were collected from within a 100 m range ring, using SEXTANT software and DGPS position-fixing.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/20629/

function: order

Unique resource identifier

code

CEFAS81115dc9-b8e2-43ff-a7a0-e591a0a05ee1

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

Additional information source

Cefas publications relating to this dataset include: <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span>

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

3

North bounding latitude

55

South bounding latitude

49.5

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the 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

1992-12-01T00:00:00.000Z

End position

1994-03-31T23:00:00.000Z

Dataset reference date

date type

publication

effective date

2020-08-11

Frequency of update

notPlanned

Quality and validity

Lineage

A visual description of the sediment type was recorded, plus location and times of sample collection, depth and sea state. A sub-sample for sediment particle size analysis was removed using a 2 cm diameter perspex corer inserted to a depth of about 5 cm. The contents of the grab were transferred to a hopper, and gently washed over a 1 mm mesh brass sieve. The retained material was preserved for analysis in 5% formaldehyde in seawater with added Rose Bengal. The macrofauna was identified to species level, as far as possible, with the use of a range of standard taxonomic keys. All animals were enumerated, with the exception of colonial organisms which were recorded on a presence/absence basis. Biomass of each taxon was determined as wet blotted weight, and then expressed as ash-free dry weight using conversion factors, mainly from Rumohr et al. (1987). For particle size analyses, sediment subsamples were first wet sieved at 500 microns. The >500 micron fraction was then dry-sieved at half-phi intervals, and the <500 fraction analysed using a Coulter LS130 laser sizer. Percentage organic carbon and nitrogen were determined sing a CHN analyser, following exposure of sediment samples to fumes of concentrated HCl in order to dissolve carbonates. Cefas quality control procedures followed for processing of macrofaunal and sediment samples.

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

2020-08-11T13:31:04

Metadata language