WFD Cycle 2: Fish Classification for Transitional Waterbodies

European transitional waterbodies are assessed using fish classification data pooled over six-year periods. The dataset contains ten metrics on species composition and abundance, used to calculate Ecological Quality Ratios (EQRs) for WFD status classification (High to Bad). It is a subset of the WFD Classification Status Cycle 2, attributed to the Environment Agency.

Use Cases

• Classifying ecological status of transitional waterbodies based on observed fish metrics compared to reference scores.
• Calculating Ecological Quality Ratios (EQRs) for fish communities using the ten described metrics.
• Monitoring long-term trends in waterbody health by analyzing data pooled over six-year periods.
• Assessing the impact of environmental pressures on fish species diversity and abundance in transitional waters.

Strengths

• Data is pooled over six-year periods, providing a multi-year assessment of ecological status.
• Classification is based on ten specific metrics designed to explore different components of species diversity.
• Includes a defined reference period (2006-2011) for calculating expected scores.

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Environment Agency, provided via Government Digital Service on eu_open_data.

Collection Method

Fish are caught using a variety of techniques throughout each classified waterbody, with data pooled over six years.

Time Range

Reference scores derived from data collected between 2006 and 2011. Observation period is the most recent six years prior to dataset creation.

Geography

Transitional waterbodies, likely within the scope of the European Water Framework Directive.