Hydrologic alteration is a major threat to freshwater biota, and particularly fish, in many river courses around the world. We analyzed and compared the effects of water abstraction on two threatened cyprinid fishes of contrasting ecology (the Mediterranean barbel Barbus meridionalis and the Catalan chub Squalius laietanus) in a Mediterranean stream. We compared abundance, size-structure, growt...

The FishProtector, an Electric Flexible Fish Fence is investigated in ethohydraulic experiments. protection potential tested using outdoor, experimental channel. To find optimum parameter settings, cable clearance, approach flow angle, and the size of electric field vary within predefined limits. Due to combination both, physical barrier (tensioned steel cables) behavioral (pulsed low voltage r...

Bar racks are commonly installed to divert fish away from water intakes, such as those at hydropower stations or other abstraction points. In temperate regions their effectiveness has predominantly been assessed in relation diadromous species, salmon and eel. This study compared the efficacy of horizontally vertically oriented (5 mm diameter 10 spacing) guide downstream moving groups five chub ...

In the context of River Rhône restoration programme, objective this study was to assess dispersal and population connectivity European chub, Squalius cephalus (Linnaeus, 1758) in a section natural, free-flowing part lower Rhône. The elemental water signatures for Sr:Ca Ba:Ca were measured at seven stations within river section, including its tributaries backwaters, determine whether they could ...

Predictions of species responses to climate change often focus on distribution shifts, although responses can also include shifts in body sizes and population demographics. Here, shifts in the distributional ranges ('climate space'), body sizes (as maximum theoretical body sizes, L∞) and growth rates (as rate at which L∞ is reached, K) were predicted for five fishes of the Cyprinidae family in ...

The main objective of this study was to collect new data on the occurrence, levels of priority and emerging organic compounds in freshwater fish sampled in the Rhone River. The 34 studied contaminants included alkylphenols, bisphenol A, polybromodiphenylethers (PBDE), perfluorinated compounds, hexabromocyclododecanes (HBCD), hexachlorobenzene and hexachlorobutadiene (HCBD). About 50 fish sample...