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2 results on '"Stroffek S"'

1. To build pressure-impact models for a better spatial extrapolation of the ecological status

Author

Villeneuve, Bertrand, Stroffek, S., Reyjol, Yorick, Irstea Publications, Migration, Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Agence de l'eau Rhône Méditérranée Corse, and Agence Française pour la Biodiversité (AFB)

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences
Abstract

International audience; National monitoring networks cannot be used to assess the status of all water bodies, as they were usually not explicitely designed for that purpose. Consequently, another approach than direct monitoring is needed to assess the status of water bodies which are not surveyed. A solution has previously been attempted that consisted in using expert judgment or in grouping water bodies. However, this option may lead to a heterogeneous assessment across member states within Europe. For this reason a solution might be to associate both extrapolation models based on pressure/impacts knowledge and expert judgment is probably a promising way to achieve that goal. While the use of a model is an objective approach, it may have bias and be inappropriate to specific local conditions not taken into account in learning dataset used to build the model. Taking into account expert expert judgment could correct for this bias, but can not be considered alone.

Published
2012

2. Assessing the ecological status in the context of the European Water Framework Directive: where do we go now?

Author

Reyjol Y, Argillier C, Bonne W, Borja A, Buijse AD, Cardoso AC, Daufresne M, Kernan M, Ferreira MT, Poikane S, Prat N, Solheim AL, Stroffek S, Usseglio-Polatera P, Villeneuve B, and van de Bund W

Subjects
Biodiversity, Conservation of Natural Resources methods, Ecosystem, Environmental Monitoring, Europe, Water Pollution, Conservation of Natural Resources legislation & jurisprudence, Ecology, Environmental Policy
Abstract

The Water Framework Directive (WFD) is now well established as the key management imperative in river basins across Europe. However, there remain significant concerns with the way WFD is implemented and there is now a need for water managers and scientists to communicate better in order to find solutions to these concerns. To address this, a Science-Policy Interface (SPI) activity was launched in 2010 led by Directorate-General for Research and Innovation and Onema (the French national agency for water and aquatic ecosystems), which provided an interactive forum to connect scientists and WFD end-users. One major aim of the SPI activity was to establish a list of the most crucial research and development needs for enhancing WFD implementation. This paper synthesises the recommendations from this event highlighting 10 priority issues relating to ecological status. For lakes, temporary streams and transitional and coastal waters, WFD implementation still suffers from a lack of WFD-compliant bioassessment methods. For rivers, special attention is required to assess the ecological impacts of hydromorphological alterations on biological communities, notably those affecting river continuity and riparian covering. Spatial extrapolation tools are needed in order to evaluate ecological status for water bodies for which no data are available. The need for more functional bioassessment tools as complements to usual WFD-compliant tools, and to connect clearly good ecological state, biodiversity and ecosystem services when implementing WFD were also identified as crucial issues., (Copyright © 2014 Elsevier B.V. All rights reserved.)

Published
2014
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