نتایج جستجو برای: water framework directive
تعداد نتایج: 1009400 فیلتر نتایج به سال:
The European water framework directive (WFD; Directive 2000/60/EC) develops the concept of ecological quality status (EcoQ) for the assessment of the quality of water masses. The EcoQ is based upon the status of biological, hydromorphological and physicochemical quality elements, with biological elements being especially important; and supported by the others. The physico-chemical elements incl...
Biotic indices, which reflect the quality of the environment, are widely used in the marine realm. Sometimes, key species or ecosystem engineers are selected for this purpose. This is the case of the Mediterranean seagrass Posidonia oceanica, widely used as a biological quality element in the context of the European Union Water Framework Directive (WFD). The good quality of a water body and the...
Assessing the ecological status, a concept implemented in the European Water Framework Directive [EC, 2000. Directive of the European Parliament and of the Council 2000/60/EC establishing a framework for community action in the field of water policy PE-CONS 3639/1/00, p. 72], requires the application of methods capable of distinguishing different levels of ecological quality. The Average Taxono...
The aim of this study was to test field relevance of the prospective methodology for the assessment of environmental risk described in the EU technical guidance document (TGD) [European Commission 2003. Technical guidance document in support of Commission Directive 93/67/EEC on Risk assessment for new notified substances and Commission Regulation (EC) No 1488/94 on Risk assessment for existing ...
Distributed geospatial data and services can be used to form Spatial Data Infrastructures (SDI). Current technological developments enable SDI to process large amounts of geospatial data. In this context, Web Processing Services (WPS) can be used as an open interface standard for accessing and executing geospatial processes. Since many SDI are based on Service-Oriented Architectures (SOA), the ...
Mercury (Hg) is still a focus of environmental research, since its levels in fish frequently exceed the Environmental Quality Standard (EQS) of 20 μg/kg for biota defined by the European Water Framework Directive (Directive 2008/105/EC). Current Hg levels in Abramis brama from German rivers are in the range of 73–346 μg/kg wet weight (2009) and exceed the EQS by a factor of 3.7–17.3. Therefore,...
Economic ideas and processes are becoming increasingly integrated with more traditional engineering and hydrologic models of water management problems. Combining economic management concepts and performance indicators with an engineering-level of understanding of a hydrologic system can provide results and insights more directly relevant for water management decisions and policies. When such mo...
Water is the sector most comprehensively covered in European Union’s environmental policy. An initial wave of directives accounting for public health protection and for harmonisation of environmental rules in the common market was followed by a call for a policy reform to address more properly realistic objectives, often conflicting in practical interpretation, such as environmental protection,...
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