WFD Cycle2 TraC seagrass classification
This dataset is a subset of "WFD Classification Status Cycle 2" and contains classification data for the seagrass sub-element of the angiosperms element in transitional and coastal water bodies. Seagrasses are flowering plants that can provide habitats for a range of invertebrate and fish species and contribute to seafloor stability. Seagrass beds are sensitive to physical disturbance which can destroy the beds and increase the suspended sediment in coastal waters. They are also sensitive to secondary effects of elevated nutrients. As such, they can be used to indicate the ecological status of transitional and coastal water bodies. Metrics on seagrass diversity, density and the extent of meadows are run through the SAILOR classification tool. This tool is currently suitable for use only with intertidal seagrass beds. The actual (observed) scores for the three metrics are compared with a pre-defined reference score for each water body. The comparison of the observed to expected scores is known as an Ecological Quality Ratio (EQR). EQRs are used to produce a seagrass classification (High, Good, Moderate, Poor, Bad) of the water body for Water Framework Directive (WFD) purposes. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.
dataset
protocol: http
name: WFD_SW_Classification_Status_and_Objectives_Cycle2_v3.xlsx
description: WFD_SW_Classification_Status_and_Objectives_Cycle2_v3.xlsx download on Defra Data Services Platform
5687f3f3-d5f6-4a20-9c7b-a9f52b84f0d6
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
environment
EC directive
publication
2010-01-13
water quality
publication
2010-01-13
-6.236
2.072
55.816
49.943
2015-12-02
2099-12-31
creation
2015-12-09
annually
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.
Proprietary format | MS Excel (XLS)
Unknown
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
There are no public access constraints to this data. Use of this data is subject to the licence identified.
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2024-01-02