Identification

Title

West Gabbard zooplankton abundance time series monitoring using ZooScan from 2016 to 2022

Abstract

Estimates of zooplankton taxa abundances identified and analysed using semi-automated methods with the ZooScan instrument and EcoTaxa web application. Data are obtained from opportunistic ringnet sampling at the West Gabbard sampling location as part of a time series. The dataset currently contains the results from zooplankton samples obtained from 30/06/2016 - 28/02/2022, although the time series is ongoing. After subsequent image analysis, the sampling information and results are analysed to provide abundance estimates for zooplankton taxa in m3.

Resource type

series

Resource locator

https://data.cefas.co.uk/view/20561

name: Cefas Data Portal

description: The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: CSV, ESRI Shapefile. The data can also be accessed via the WFS and WMS protocols.

function: download

Unique resource identifier

code

CEFAS20561

codeSpace

https://data.cefas.co.uk

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

biota

Keywords

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

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

revision

effective date

2010-05-18

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2012-01-11

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2012-01-11

Geographic location

West bounding longitude

2.00

East bounding longitude

2.50

North bounding latitude

52.00

South bounding latitude

51.75

Temporal reference

Temporal extent

Begin position

2016-06-29

End position

2022-02-28

Dataset reference date

date type

publication

effective date

2021-04-12

date type

revision

effective date

2024-07-24

date type

creation

effective date

2020-05-12

Frequency of update

notPlanned

Quality and validity

Lineage

Since 30th June 2016, opportunistic sampling has been undertaken by the RV Cefas Endeavour throughout the year by vertically deploying 0.5m 200µm mesh ringnets at the West Gabbard sampling location. Samples are sent back to the Plankton Lab at the Lowestoft laboratory. These are then prepped and scanned for image analysis using ZooScan, with the obtained images subsequently being imported into the EcoTaxa project library. Once uploaded into EcoTaxa, sample scan images are predicted into taxa categories with the provision of a learning set to aid automatic image sorting using Random Forest algorithms. These predicted classifications are validated afterward by an experienced taxonomist and the metadata downloaded. Objects captured in images are separated into zooplankton taxa and detritus groups and abundances are estimated (per meter cubed) using counts and sample fraction calculations. An agreed subset of the data may be selected for QC checks by a second analyst.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2013-12-10

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

true

explanation

See the referenced specification

Data format

name of format

Unknown

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Responsible organisations

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

custodian

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

distributor

Responsible party

organisation name

Department for Environment, Food and Rural Affairs (DEFRA)

email address

defra.helpline@defra.gov.uk

responsible party role

owner

Metadata on metadata

Metadata point of contact

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2024-07-24T11:41:40

Metadata language