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  Conferences > Cemagref 2003 > Scientific program
 
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Scientific program
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  Aquatic Ecosystem Health Management objectives depend on the scale of the environmental problem. At the local and national levels, the concept of sustainable development needs to be integrated with the reality of environmental management, legislation, and policy making. At the global level, other aspects, like socio-economic and political factors dominate the aquatic ecosystem management.
   
 

Our challenge there is to convince authorities that aquatic ecosystem health is a key element in the endeavour towards for sustainability, since water quality is an important prerequisite for both human health and development as well as healthy ecological status of aquatic ecosystems.
Depending on the questions raised and their relevant management objectives, “ecosystem health” assessments are designed at a range of scales, from the smallest (micro-habitat, or even particle) to the largest (catchment, region, or even larger).

Global / climate changes will better be addressed at continental / decades scales, while the impact of chemicals would rather be scrutinised at local / short term level. However, there is also a need for extrapolating from the spatial and temporal contexts at which the observations or experiments are done to larger or narrower “windows”. In other words, there is a need for approaches to address multiple scales, like:

  • Biological indicators: from genes to communities
  • Chemicals: from single substance to mixtures
  • Ecosystems: from local perturbations to global changes
  • Policy and management: from local and national issues to international conventions
  It seems probable that the accuracy of comprehension of occurring processes decreases increasing with the scale.
Therefore, this “scale issue” raises, among others, two types of questions related (a) to the appropriateness of investigative methods to the stakes, and (b) to the relevance of either the quality criteria or the remediation objectives.
   
 

Iterations between these levels, and then integration, are a necessity and we need to assume their consistency (complementarily) in order to produce relevant managerial approaches and to promote efficient remediation and preservation of aquatic ecosystems.

The Conference plans to focus on the main theme "Scaling from local to global perspectives", through different sessions, as follows:

     
   
  • Physical and chemical determinants of biological functioning
  • Advanced (bioassay) techniques and their management application
  • Scientific inputs to environmental policies and management
 

Each session invites oral or poster presentations dealing with the various scales discussed above. The conference language will be English only.

Poster size will be A0, title in upper-case letters (about 1 cm high or more)"

 

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