Les plans d'eau concentrent une biodiversité importante, notamment au niveau de leurs zones littorales, indispensables à un moment donné du cycle de vie de nombreuses espèces. Ils sont associés à divers usages1 (industriels, domestiques, hydroélectriques, agricoles, socio-économiques et de loisirs) les soumettant à des pressions multiples2. Ces der...
Les plans d'eau sont des écosystèmes caractérisés par une zone littorale présentant des habitats diversifiés concentrant une forte biodiversité. Ces milieux, qui assurent de nombreux services écosystémiques, subissent des perturbations physiques d'origine anthropique, particulièrement au niveau de leurs zones littorales, induisant de fortes pressio...
Présentation des principes du Suivi scientifique minimal, de sa mise en oeuvre, des montages possibles multi-partenaires, état des lieux et perspectives.
Aquatic ecosystems facing multiple stressors lead to challenging conditions for their management, as stressors can have additive, but also interactive effects on organisms, populations and communities. Accounting for these interactions is important in the assessment of the stressor’s impacts and to implement good restoration measures. Using a compa...
Ce rapport a pour objectif d’identifier les critères nécessaires pour caractériser la qualité hydromorphologique des plans d’eau en France. Le premier chapitre rappelle la définition de l’hydromorphologie au sens de la DCE et fournit un cadre conceptuel pour mieux appréhender les relations entre pressions et altérations hydromorphologiques. Le seco...
An analysis of the long term morphological evolution of the Génissiat reservoir (France) is provided. First, a methodology for bathymetric data processing and reservoir sediment volume budget calculation is described. An estimation of global uncertainties in volume calculation is proposed. The reservoir bathymetric budget for several dam flushing e...
Connectivity may be structural, based on adjacency of landscape features, or functional, based on howthat adjacency translates to movement of organisms. We present a modelling approach that elucidatesboth aspects of connectivity to identify vital corridors and conservation priorities in a river network.For the dendritic network structure of river s...
Published in Landscape Ecology
Existing methods for connectivity analysis still encounter difficulties in explaining functional relationships between network structure and ecological patterns over larger territories or complex structures like dendritic river networks. We propose a method that addresses the problem of scale and resolution in the connectivity analysis of dendritic...
Published in Hydrobiologia
Data on phytoplankton, macrophytes, benthic invertebrates and fish from more than 2000 lakes in 22 European countries were used to develop and test metrics for assessing the ecological status of European lakes as required by the Water Framework Directive. The strongest and most sensitive of the 11 metrics responding to eutrophication pressure were ...
1. We aimed to distinguish the relative contributions of natural and anthropogenic local factors on patterns of fish diversity in European lakes at different geographical scales. 2. We compiled data from standardised fish monitoring using multimesh benthic gill nets, information on lake morphometry and on geographical, climatic and anthropogenic pr...
