Dissolved oxygen as a physico-chemical supporting element in the Water Framework Directive
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
Ook verschenen in:Devlin, M.; Best, M.; Haynes, D. (Ed.) (2007). Implementation of the Water Framework Directive in European marine waters. Marine Pollution Bulletin, 55(Spec. Issue 1-6). Elsevier: Amsterdam. 297 pp., meer
|  |
| Trefwoorden |
Chemical elements > Nonmetals > Atmospheric gases > Oxygen > Dissolved gases > Dissolved oxygen
Environmental effects > Salinity effects
Environmental effects > Temperature effects
Properties > Physicochemical properties
Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
Marien/Kust |
| Author keywords |
Water Framework Directive; dissolved oxygen; classification schemes;estuaries; transitional and coastal waters |
| Auteurs | | Top |
- Best, M.
- Wither, A.W.
- Coates, S.
|
|
|
| Abstract |
For transitional and coastal waters the Water Framework Directive identifies 5 "General chemical and physiochemical elements supporting the biological elements". The five elements are transparency, thermal conditions, oxygenation conditions, salinity and nutrient conditions. "Supporting" in the context of the directive means that the values of the physicochemical quality elements are such as to support a biological community of a certain ecological status, recognising the fact that biological communities are products of their physical and chemical environment. Physicochemical and hydromophological aspects fundamentally determine the type of water body and habitat, and hence the type specific biological community. The directive does not intended that these supporting elements should be used as surrogates for the biological elements in monitoring. The monitoring and assessment of the physical and physicochemical quality elements will support the interpretation, assessment and classification of the results arising from the monitoring of the biological quality elements. This paper considers the challenges involved in the development of oxygen standards for the directive, their relationship to the biological elements and normative conditions of the directive and to regulatory requirements. |
|
