Identification

Title

2001 - 2003 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Irish Sea Plaice Distribution Project Plankton Survey

Abstract

Ichthyoplankton and beach surveys were undertaken in 2001, 2002 and 2003 by the Centre for Environment, Fisheries and Aquaculture Science to examine plaice spawning and settling juvenile distribution in the eastern Irish Sea. This data consists of: 1) Numbers of fish eggs and larvae identified from the main net plankton samples, along with associated positional and ancillary data and volumes filtered. 2) Numbers and lengths of 0-group plaice, shrimp (Crangon crangon), crabs and other species collected during sampling from the beach with a small beam trawl. 3) Micro-increment counts of prepared otoliths taken from juvenile plaice.

Resource type

dataset

Resource locator

Unique resource identifier

code

CEFAS25bf7120-6a89-4df7-ace6-49df23e10b03

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

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

Geographic location

West bounding longitude

-4.5

East bounding longitude

-2.5

North bounding latitude

55

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

2001-04-03

End position

2003-04-30

Dataset reference date

date type

publication

effective date

2019-10-29

Frequency of update

notPlanned

Quality and validity

Lineage

Ichthyoplankton and zooplankton samples collected from RV Prince Madog and charter MFV Resolute used Gulf VII 53cm un-encased body with 20cm main net opening and 270um mesh net and end-bag. Auxillary 'pup' sampler with 5cm diameter nose cone opening and 80um mesh net also used. FSI-m CTD, Valeport flowmeters with internal logging package. Sampling on Corystes used Gulf VII, 76cm un-encased body, 40cm diameter nosecone, 270 um mesh main net, auxillary un-encased pup net, 5cm nosecone, 80 um mesh net, guildline CTD, Valeport flowmeters with continuous logging. Beach sampling used 1.5 and 2 m beam trawls hauled perpendicular to shore for 100m (from sea to shore), nets 6 - 10 mm mesh( stretched) Zooplankton samples preserved onboard in 4% buffered formaldehyde and transferred to Cefas Lowestoft for analysis. Fish eggs and larvae picked out of the preserved samples from the main net using low power microscopy, sub-sampling undertaken as necessary. Ichthyoplankton identified using Cefas standard protocol. Egg diameter measured for all eggs. Fish eggs identified to species group/species where possible based on key features such as presence/absence of oil globules, size etc. All intact larvae identified to species or group level. Samples re-preserved and stored. Pup samples not analysed, in storage. Beach samples: catch sorted at collection and 0- and 1-group plaice wrapped in foil and immediately frozen in liquid nitrogen. Larger catch items i.e. Crabs or larger fish were counted, measured and put back into the sea. Measurements recorded in red logbooks. Rest of catch (mostly shrimps) preserved in 4% buffered formadehyde. All samples transferred to Cefas Lowestoft. Plaice were dried, weighed, and otoliths removed for age determination. Otoliths attached to glass cover slips using 'Crystalbond' resin, ground using fine milling paper and daily increments counted under high power microscope.

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

2019-10-29T10:09:44

Metadata language

eng