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  3. WFD Cycle 2 TraC Fish Classification

WFD Cycle 2 TraC Fish Classification

Summary

This dataset is a subset of "WFD Classification Status Cycle 2" and contains classification data for fish in transitional waterbodies. Fish are caught using a variety of techniques throughout each waterbody classified and the data is pooled over the most recent six year period. The pooled datasets can be used to indicate the ecological status of a transitional waterbody. There are ten metrics on various facets of composition and abundance designed to explore different components of species diversity in order to determine the health and quality of a transitional waterbody. The actual (observed) scores for these metrics are compared with a reference score derived from data collected in a similar way between 2006 and 2011. The comparison of the observed to expected scores is known as an Ecological Quality Ratio (EQR). EQRs are used to produce a classification (High, Good, Moderate, Poor, Bad) of the water body for Water Framework Directive (WFD) purposes.

Categories

Use limitation statement

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Attribution statement

© Environment Agency copyright and/or database right 2016. All rights reserved.

Technical information

Update frequency

annually

Lineage

The Water Framework Directive classification system is risk based and focuses on where there is likely to be a problem. It uses a principle known as "one out, all out", which means the poorest individual results drive the overall classification for a water body. It reports on over 30 quality elements, grouped into ecological status and chemical status. Ecological status includes physico-chem (e.g. nutrients, pH, dissolved oxygen, ammonia) , biological elements (e.g. phytoplankton, macroalgae, fish, invertebrates) , specific pollutants (e.g. metals and compounds, organic compounds) , hydromorphology (e.g. depth, width, flow, structure). Chemical status is assessed using priority substances, priority hazardous substances and other pollutants that present a significant risk to the water environment.

Spatial information

Geographic extent

  • Latitude from: 49.943 to 55.816
  • Longitude from: -6.236 to 2.072
Metadata information

Language

English

Metadata identifier

0e4f8b97-9b99-4ad8-872f-3e2dcb061f7b


Published by

Environment Agency

Contact publisher

Defra Data Services Forum

Dataset reference dates

Creation date

09 December 2015

Revision date

N/A

Publication date

N/A

Period

  • From: 02 December 2015

Search

Data and Supporting Information
Data services and download by area of interestLinkAction
Full downloads and supporting documentationFormatAction
WFD_SW_Classification_Status_and_Objectives_Cycle2_v3.xlsxXLSXDownload