Identification

Title

1911 - Ongoing Marine Biological Association of the United Kingdom (MBA) Western English Channel inshore haul demersal fish time series survey data

Abstract

The inshore haul time series has been undertaken using seven research vessels over sampling period to date, each using comparable gear i.e. a small (~15m headline) otter trawl with a small mesh cod-end or a cod end cover of 5mm. For each trawl, vertebrates are identified to species level. Demersal fish abundance is recorded; fish are recorded by number of individuals and/or total biomass of common species. Between 1911 and 1986 only the total length of individuals and disc width in rays was, intermittently on sub-samples, recorded. From 2001 to ongoing the total abundance and biomass for each species is recorded in addition to length, weight and disk width (if applicable) measurements of individuals. Since 2001 there has been consistent sex data for elasmobranchs. Invertebrate abundance data was also collected on these surveys and is available on request to MBASepia@mba.ac.uk. These data include high confidence cephalopod, scallop and large crab abundance as well as counts of other invertebrates including other crustaceans and echinoderms. Sensitive species as published by the National Biodiversity Network Trust (available: https://docs.nbnatlas.org/sensitive-species-list/ correct as of 03/02/2021) have been removed from the dataset but can be made available on request.

Resource type

series

Resource locator

http://www.dassh.ac.uk/

name: DASSH homepage - general website

description: http://www.dassh.ac.uk

Unique resource identifier

code

MBA_InshoreHaul_SE01

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

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

Additional information source

Genner, M.J., Sims, D.W., Wearmouth, V.J., Southall, E.J., Southward, A.J., Henderson, P.A., Hawkins, S.J. (2004) Regional climate warming drives long-term community changes of British marine fish. Proc. R. Soc. B 271, 655-661.

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

2011-07-06

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2012-02-14

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2012-03-16

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2012-04-28

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2006-08-31

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2017-05-12

Geographic location

West bounding longitude

-4.3000

East bounding longitude

-3.8000

North bounding latitude

50.3800

South bounding latitude

50.2000

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Western Channel and Celtic Sea

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

29E5

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

29E6

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

water column

Vertical extent information

Minimum value

-10.0000

Maximum value

-50.0000

Coordinate reference system

authority code

code identifying the coordinate reference system

urn:ogc:def:crs:EPSG::5861

Temporal reference

Temporal extent

Begin position

1911-03-15

End position

2021-02-03

Dataset reference date

date type

publication

effective date

2021-01-27

date type

creation

effective date

1911-03-15

date type

revision

effective date

2021-01-27

Frequency of update

annually

Quality and validity

Lineage

The inshore haul has been undertaken using seven research vessels over the time series, each using comparable gear i.e. an ~15m headline small otter trawl with a small mesh cod-end or a cod end cover of mesh size 5mm. Gear descriptions for the time period 2004 - present are comprehensive. Gear specifications from historical data are less well described. There is high confidence in any dataset available for public download within this data series. There is high confidence in vertebrate species identification throughout the time series in the majority of species. Since 2004 data is subject to quality checking of 10% of digitised data against paper records. Since 2018, taxonomic identification has been validated through the NMBAQC scheme. If there is any question of confidence of taxonomic identification of a species then a more general taxonomic level is used to describe these specimens (typically genus). There are less records of quality control procedures and gear specifications for historic data. These data are available through request to MBASepia@mba.ac.uk where specialist advice on data confidence and methodology can be provided in addition to the dataset. Invertebrate abundance data is available through request to MBASepia@mba.ac.uk. There is high confidence in species identification of some species (e.g. cephalopods). Species recorded and confidence in identification within this dataset can be discussed via a data request.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011-02-02

degree

true

explanation

See the referenced specification

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Published data to be used under a CC-BY license. Unpublished data available for use via data request to MBASepia@mba.ac.uk

Constraint set

Limitations on public access

Published data to be used under a CC-BY license. Unpublished data available for use via data request to MBASepia@mba.ac.uk

Responsible organisations

Responsible party

contact position

Sea-going team

organisation name

Marine Biological Association of the United Kingdom

email address

MBASepia@mba.ac.uk

responsible party role

originator

Responsible party

contact position

Research Vessel Manager

organisation name

Marine Biological Association of the United Kingdom

email address

racbri@mba.ac.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Sea-going team

organisation name

Marine Biological Association of the United Kingdom

email address

MBASepia@mba.ac.uk

responsible party role

pointOfContact

Metadata date

2021-02-03

Metadata language