Identification

Title

1981 - 1981 Centre for Environment, Fisheries & Aquaculture Science (Cefas) 1981 Eastern Irish Sea Groundfish Survey Catch Data - Silver Star Time Series

Abstract

A series of groundfish surveys were carried out on the fishing vessel Silver Star from 1976 to 1991 in the eastern Irish Sea. Fishing took place using a Boris Goshawk trawl towed for an hour. This data is from the 3 surveys carried out during 1981. Numbers at length by centimetre of the main commercial fish species are recorded. Station positions by area are recorded. A summary table is included for cruises 02/81 and 03/81 containing catch data for all other species.

Resource type

series

Resource locator

http://data.cefas.co.uk/#/View/2585/

function: order

Unique resource identifier

code

CEFAS6c7784d4-d0fd-4b4a-8a93-af284c05963f

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

SeaDataNet P021 parameter discovery vocabulary

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

GEMET, version 1.0

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

GEMET - INSPIRE themes, version 1.0

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

-5

East bounding longitude

-2.5

North bounding latitude

54.5

South bounding latitude

53

Extent

Extent group

authority code

title

SeaVoX Vertical Co-ordinate Coverages

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Temporal reference

Temporal extent

Begin position

1981-03-14

End position

1981-10-31

Dataset reference date

date type

publication

effective date

2020-11-10

Frequency of update

notPlanned

Quality and validity

Lineage

Three cruises were carried out in 1981: - **Silver Star 01/81 (14th March - 03rd April)** Work commenced on the 14th March off the Welsh coast (Conwy) briefly stopping when southerly gales prevented work on the 15th, all stations were completed by the 20th. Standard trawling stations were worked in the Liverpool Bay on the 29th March, and a further two were carried out en route to Douglas, 12 more stations were then completed in this area over the period 31st March to 2nd April. 34 one-hour trawls were carried out in total, all commercial species were measured and otoliths were taken from 364 plaice, 194 whiting, 179 cod, 18 sole, 8 lemon sole, 9 brill. - **Silver Star 02/81 (11th June - 19th June)** Trawling commenced on 11th June off the Welsh coast (Conwy) and continued through to the 13th until strong north west winds kept the vessel in port. Further trawls were carried out on the 14th, until the wind increased again and halted work on the 15th. On 18th June the vessel travelled to the Liverpool Bay area, where all remaining trawls were completed by the end of the 19th. 20 one-hour trawls were carried out in total, all commercial species were measured and otoliths were taken from 282 plaice, 133 whiting, 38 cod, 7 sole. - **Silver Star 03/81 (19th October - 31st October)** Strong north westerly winds prevented work until the 22nd, after which the survey commenced for ten days, however three of those were lost to unsettled weather conditions. Towards the end of the period later tides restricted the amount of daylight working hours available, and extra time had to be used. 20 one-hour hauls were successfully completed, all commercial species were measured and otoliths were taken from 277 plaice, 153 whiting, 86 cod, 57 sole.

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

2020-11-10T14:58:01

Metadata language

eng