Une première version d’un indice multimétrique poisson a été développée par modélisation pour évaluer le potentiel écologique des retenues artificielles françaises et tchèques, en application de la Directive Cadre européenne sur l’Eau. Ce rapport décrit les premières analyses réalisées, présente les métriques sélectionnées et décrit la relation obt...
Acoustic fixed telemetry monitoring allows to track aquatic animals over large areas during long periods Pikeperch (Sander lucioperca), Pike (Esox lucius) and Perch (Perca fluviatilis), 3 piscivorous species, are often together in the European reservoirs. Our objective was to study the activity patterns of these species and temporal variability of ...
La mise en place de la trame bleue nécessite le développement d’outils de modélisation de la continuité écologique des rivières pour les poissons. Comment fonctionnent ces outils et comment peuvent-ils contribuer à identifier les zones prioritaires à restaurer tout en tenant compte des usages antagonistes du milieu aquatique ? Quelques réponses ave...
Damming is one of the most widespread impairments of river systems around the world. The formula-tion of scientifically justified guidelines for restoration and remediation of impairments requires betterunderstanding of the relationships between alteration and stream condition. The present study examinesrelationships between the presence and densit...
In this paper, we will see that the symplectic creed by Weinstein 'everything is a Lagrangian submanifold' also holds for Hamilton-Poincare and Lagrange-Poincare reduction. In fact, we show that solutions of the Hamilton-Poincare equations and of the Lagrange-Poincare equations are in one-to-one correspondence with distinguished curves in a Lagrang...
Within the context of ongoing environmental changes, the life history of diadromous fish represents areal potential for exploring and colonizing new environments due to high potential dispersal abilities. Theuse of dynamic approaches to assess how these species will respond to climate change is a challenging issue and mechanistic models able to inc...
