Identification

Title

Kent and Essex IFCA whelk pot hole size pilot study 2012

Abstract

In response to a dramatic increase in the number of whelk pots being set in the district in 2011, KEIFCA introduced an emergency byelaw limiting the number of pots per vessel to 300. As part of the research into other potential management methods the industry suggested exploring the possibility of the drain hole in a pot being used as an escape hole to reduce the number of undersized whelks caught by the gear. Commercial Whelk pots with varying sizes of drain hole were shot in strings of ten and left to soak for 48 hours, then hauled and redeployed for a second period of 48 hours. The resulting whelks from each pot were measured along their widest and shortest axis', the results were then inputted into a spreadsheet and statistical analyses carried out on the data. The results showed a small positive correlation between hole size and the shell height of the whelks in that pot. This research is currently being expanded via a joint CEFAS/KEIFCA/Sussex IFCA project.

Resource type

dataset

Resource locator

Unique resource identifier

code

KEIFCA000003

codeSpace

http://www.kentandessex-ifca.gov.uk

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4326

Classification of spatial data and services

Topic category

oceans

biota

Keywords

Keyword set

keyword value

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2008-01-06

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2009-11-16

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2012-04-02

Geographic location

West bounding longitude

0.6042

East bounding longitude

1.4722

North bounding latitude

51.8833

South bounding latitude

50.9792

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

31F1

Temporal reference

Temporal extent

Begin position

2012-05-28

End position

2012-06-01

Dataset reference date

date type

publication

effective date

2012-10-22

date type

creation

effective date

2012-06-01

date type

revision

effective date

2012-10-22

Frequency of update

notPlanned

Quality and validity

Lineage

Ability of varying drain hole sizes in whelk pots to release undersized whelks was assessed by a pilot project consisting of five strings of ten commercial whelk each soaked for 2 x 48 hours. Data was recorded to a standard CEFAS recording form and then inputted into a spreadsheet where further statistical analyses could be carried out.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced.

Constraint set

Limitations on public access

Additional access information - No restrictions to public access

Responsible organisations

Responsible party

organisation name

Kent and Essex Inshore Fisheries and Conservation Authority

email address

dominic.bailey@kentandessex-ifca.gov.uk

responsible party role

originator

Responsible party

organisation name

Kent and Essex Inshore Fisheries and Conservation Authority

email address

dominic.bailey@kentandessex-ifca.gov.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

Kent and Essex Inshore Fisheries and Conservation Authority

email address

dominic.bailey@kentandessex-ifca.gov.uk

responsible party role

pointOfContact

Metadata date

2021-02-09

Metadata language