Report: LAWA: Structure Matrix Water Types WRRL North Sea – Weser and Elbe. Final Report (2006)»
Description
“With the publication of the Water Framework Directive (WFD) in the Official Journal of the European Union on 22 November, In December 2000 (EU 2000), the basis for an ecological water protection policy in Europe was established. One of the objectives of the Directive is to establish a framework for the protection of waters in order to avoid further deterioration and to protect and improve the status of aquatic ecosystems and the land ecosystems and wetlands directly dependent on them. Among many other objectives, sustainable water use is to be ensured on the basis of long-term conservation of resources. The Directive applies both to groundwater and inland surface waters, as well as to transitional and coastal waters. In order to implement the Water Framework Directive in Lower Saxony, the Lower Saxony Regulation on the regulatory framework for water law was adopted on 27 July 2004 (LAND NIEDERSACHSEN 2004). A basic prerequisite for the implementation of the WFD is procedures for assessing the status of the waters. This requires information on the qualitative and quantitative characteristics of certain quality components in the largely natural state of the water type concerned. This “anthropogenic largely unaffected state” corresponds to the reference conditions, the “very good condition”. On the basis of this, a five-stage classification of the waters is carried out. The ‘good status’ corresponds to the target state to be achieved by 2015 for all water types. The waters which do not have this status shall be classified as “moderate”, “unsatisfactory” or “bad” according to the degree of their deviation from the reference conditions. For the ecological assessment of transition and coastal waters according to the WFD, the biological quality components phytoplankton, macrophytes and macrozoobenthos are used. In the transitional waters, fish fauna is also assessed. Chemical components that can have an impact on the biological components are essentially the nutrient ratios and pollutant contents. They are used as supporting components for the assessment of water bodies. The aim of this project is to present draft classification systems for the assessment of ecological status in accordance with the European Community Water Framework Directive for water types in the coastal area of the North Sea. For this purpose, existing evaluation parameters for the different quality components were described and reviewed within the framework of this project. The results were presented in three interim reports (JAKLIN et al. 2005a, JAKLIN et al. 2005b, JAKLIN & PETERSEN 2006). Further aspects of the parameters and reference conditions at national and international level were discussed and revised for the present work. In addition, further evaluation criteria were developed and examined. Finally, if the data were sufficient, reference conditions and class limits were proposed for the different water types or bodies respectively. The results of this work are the evaluation systems for the waters of the processing area presented below. In the German North Sea area, five types of coastal waters are characterised as well as one type of transitional water. In addition to the own research and development work, this thesis also collects in particular the results of project-related studies, which dealt with specific sub-questions on individual quality components or areas of water during short durations, and is used for the development of reference states and for the assessment of the types of waters of the North Sea transition and coastal waters. In this final report, for the biological quality components, Phytoplank_CUTABSTRACT_
Resources
| Name |
Format |
Description |
Link |
Tags
- weser
- charakterisierung-wrrl-wasserrahmenrichtlinie-lawa-nlwkn-referenzbedingungen-übergangsgewässer-küstengewässer-qualitätskomponenten-länderfinanzierungsprogramm-„wasser,-boden-und-abfall“-ökologisch