Identification

Title

2010 - 2010 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Northern Thames Estuary Sole Selectivity Trails 2010/11 - Fisheries Science Partnership

Alternative title(s)

FSP Square-mesh panels trials on twin/multi-rig-working inshore grounds in the northern Thames estuary

Abstract

To investigate the potential of more selective/environmentally friendly fishing methods by fitting square-mesh panels to 80mm otter trawls (i.e. modified trawl design) to reduce discard rates of fish and benthos in the northern Thames estuary.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/641/

function: order

Unique resource identifier

code

CEFASae9d7254-ce91-4db8-86e3-3f5778995a35

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

Geographic location

West bounding longitude

-0.5

East bounding longitude

1.5

North bounding latitude

51.75

South bounding latitude

51

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

2010-09-01T00:00:00.000Z

End position

2010-09-30T00:00:00.000Z

Dataset reference date

date type

publication

effective date

2017-01-12

Frequency of update

notPlanned

Quality and validity

Lineage

This work was part of the UK’s Fisheries Science Partnership (FSP). Trawlermen working in the Thames Estuary in the southern North Sea had suggested that square-mesh panels fitted to the underside of trawls used to catch Dover sole could reduce the catch and hence the discarding of unwanted benthos (e.g. urchins, crabs and starfish). A trawl was modified to incorporate a square-mesh section and was tested against a standard trawl on the MFV "Harvester". In September 2010, 34 hauls were conducted and the catches were sampled by Cefas scientists. Two experiments were conducted with the square-mesh panel in two different positions. A trawl fitted with a square-mesh panel near the footrope was the most successful design. It reduced the catch of unwanted benthos by 21% by volume, including 37% less volume of starfish, 27% less urchins and 23% less algae compared with a standard trawl. This design did not lose any marketable Dover sole, but caught significantly fewer Dover sole below the legal minimum landing size.

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

2017-01-12T13:23:57

Metadata language