transitional & coastal water
The working paper outlining the impact classification of alien species has been updated (05/02/2014) following the completion of additional risk assessments by GBNNSS and Phase 3 of the review of Environmental Standards.
The alarm list contains species thought to pose a risk to surface waters and their ecological status under the EC Water Framework Directive, but whose presence has not yet been recorded in Great Britain.
This method statement describes a system for assessing and classifying surface water bodies (rivers, lakes, transitional and coastal) based on the presence of high impact alien species.
Estuarine fish communities are good indicators of a range of man-made disturbances. They are mobile, relatively long lived, found near to the top of the food chain (so are affected by other parts of the chain and prone to bioaccumulation effects) and are easy to identify and return to the water: all of these characteristics make them ideal for the monitoring of estuaries. This method is based on the principle that the abundance of fish and the number of individual species found can change depending on the pressures on the estuary.
Dogwhelks are a good indicator of the contamination of the hazardous substance called tributyltin (TBT) which used to be used in anti-fouling paints on the hulls of large ships.
Saltmarshes hold great ecological value due to their range of associated plants and animals. The diversity of flora and fauna reflects the interactions between the marine and terrestrial environment.
Following a consultation that ended on 28th February 2013, UKTAG has finalised its recommendations on 1) biological standards for rivers, lakes, coastal and estuaries and 2) phosphorus standards for rivers.
The Final Recommendations on Environmental Standards following phase 3 of the review have been published (November 2013). This report includes zinc standards.
Phytoplankton utilise sunlight energy and dissolved nutrients converting these into organic materials which are often consumed by higher life forms such as fish.
The UK Technical Advisory Group (UKTAG) has commissioned a programme of work to derive Environmental Quality Standards (EQSs) for substances falling under Annex VIII of the Water Framework Directive (WFD).