Identification

Title

2001 - 2001 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Environmental correlates of large-scale spatial variation in the Delta13C of marine animals

Abstract

Carbon stable isotopes can be used to trace the sources of energy supporting food chains and to estimate the contribution of different sources to a consumer's diet. However, the δ13C signature of a consumer is not sufficient to infer source without an appropriate isotopic baseline, because there is no way to determine if differences in consumer δ13C reflect source changes or baseline variation. Describing isotopic baselines is a considerable challenge when applying stable isotope techniques at large spatial scales and/or to interconnected food chains in open marine environments. One approach is to use filter-feeding consumers to integrate the high frequency and small-scale variation in the isotopic signature of phytoplankton and provide a surrogate baseline, but it can be difficult to sample a single consumer species at large spatial scales owing to rarity and/or discontinuous distribution. Here, we use the isotopic signature of a widely distributed filter-feeder the queen scallop ( *Aequipecten opercularis* ) in the north-eastern Atlantic to develop a model linking base δ13C to environmental variables. Data includes catch data, isotope analysis data, environmental data and associated positional data.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/2989/

function: order

Unique resource identifier

code

CEFASb35fae1f-7398-4394-ab34-6be28efb0492

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

-7

East bounding longitude

9

North bounding latitude

61.5

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

Temporal reference

Temporal extent

Begin position

2001-07-26

End position

2001-09-29

Dataset reference date

date type

publication

effective date

2018-09-06

Frequency of update

notPlanned

Quality and validity

Lineage

Scallops, dab ( *Limanda limanda* ) and whiting ( *Merlangus merlangius* ) were caught with a Grande Ouverture Verticale (GOV) demersal trawl and 2m or 4m beam trawls. Stations in the North Sea, Celtic Sea and English Channel were fished using the standard protocols for fisheries surveys. The GOV and 4m beam trawls were fitted wih a cod-end of 20mm stretched mesh and the 2m beam trawl was fitted with a cod-end of 4mm stretched mesh. At each site, up to 7 scallops were selected at random from all individuals with a shell height of 50-60mm. They were weighed to 0.1g and immediatedly frozen to -30°C. Up to 3 dab and 3 whiting were also retained: dab were selected between 190 and 210mm and whiting between 240 and 260mm. Each fish was weighed to the nearest g and measured to the nearest mm.

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

2018-09-06T14:59:53

Metadata language