Suivi à moyen terme du peuplement piscicole sur le réseau hydrographique du vianon (19) en conditions naturelles

S. VERSANNE-JANODET, E. REMON, L. MOALLIC
2020
Following the end of trout restocking in a french watercrouse basin (Correze) in 1997, a multi-year study was carried out in order to assess the effect on trout population. Fish stands was estimated using the 'De Lury' removal data survey. The data underlines the role of srping hydrology (specially floods) on the common trout recruitment, and the induced effects on all other species through competition and predation relations. In doing so, it is important to keep an ecosystemic approach, taking
more » ... ic approach, taking into account all the species. This long term study confirmed the natural variability in freshwater fish populations and the need to take a step back to overcome annual specificities.
doi:10.25965/asl.1084 fatcat:voetcchqj5dhznv5zzop4ph4we