Identification
Title
Exe Estuary Cockle Stock Assessment 2010 to 2022
Abstract
Since 2012 Devon and Severn IFCA has carried out stock assessments on the public mussel beds on the Exe Estuary, south Devon. These surveys determine the area of each bed, the density of mussels, the percentage cover, and the estimated stock (in tonnes), and marketable stock (mussels greater than 50mm in length) for each bed, and are used to assess the condition of the bed and whether the bed could support a viable mussel fishery. The surveys were annual between 2010â2020 and every 2 years since.
Resource type
dataset
Resource locator
http://www.devonandsevernifca.gov.uk
name:
Devon and Severn IFCA
description:
A link to the web service or dataset
http://https://www.devonandsevernifca.gov.uk/Resource-library/H-Environment-and-Research
description:
A link to the general host site
Unique resource identifier
code
DSIFCASD082017
codeSpace
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
biota
biota
Keywords
Keyword set
keyword value
Keyword set
keyword value
Keyword set
keyword value
originating controlled vocabulary
title
GEMET - INSPIRE themes, version 1.0reference date
date type
revision
effective date
2008-01-06
Keyword set
keyword value
originating controlled vocabulary
title
SeaDataNet P021 parameter discovery vocabularyreference date
date type
revision
effective date
2009-11-16
Keyword set
keyword value
originating controlled vocabulary
title
Bivalvesreference date
date type
creation
effective date
2015-04-07
Geographic location
West bounding longitude
-3.4836
East bounding longitude
-3.3782
North bounding latitude
50.6796
South bounding latitude
50.6023
Extent
Extent group
authority code
title
Charting Progress 2 Sea Areasreference date
date type
creation
effective date
2009-06-18
code identifying the extent
Western Channel and Celtic Sea
Extent group
authority code
title
ICES Rectanglesreference date
date type
creation
effective date
2009-05-01
code identifying the extent
30E6
Extent group
authority code
title
International Hydrographic Bureau, Limits of Oceans and Seasreference date
date type
creation
effective date
1954-01-01
code identifying the extent
English Channel
Extent group
authority code
title
SeaDataNet vertical extent keywordsreference date
date type
revision
effective date
2010-01-01
code identifying the extent
littoral
Temporal reference
Temporal extent
Begin position
2012-04-01
End position
2022-11-30
Dataset reference date
date type
publication
effective date
2023-03-31
date type
creation
effective date
2010-10-31
date type
revision
effective date
2022-11-30
Frequency of update
annually
Quality and validity
Lineage
Data is collected by Devon and Severn IFCA, during March or April each year. Transects are walked across each mussel bed using the Dutch Wand method of surveying, data on the extent of each bed was also used to create GIS layers of the area of the beds. Results are compared to those from previous years.
Conformity
Data format
name of format
version of format
Constraints related to access and use
Constraint set
Use constraints
Full data available on request
Constraint set
Limitations on public access
Full data available on request
Responsible organisations
Responsible party
organisation name
Devon and Severn Inshore Fisheries and Conservation Authority
email address
office@devonandsevernifca.gov.uk
responsible party role
originator
Responsible party
organisation name
Devon and Severn Inshore Fisheries and Conservation Authority
email address
office@devonandsevernifca.gov.uk
responsible party role
custodian
Metadata on metadata
Metadata point of contact
organisation name
Devon and Severn Inshore Fisheries and Conservation Authority
email address
office@devonandsevernifca.gov.uk
responsible party role
pointOfContact
Metadata date
2023-03-23
Metadata language
eng