Les introductions d'espèces de poissons d'eau douce : distribution spatiale, déterminants et impacts sur les espèces natives

1) To asses climate change through the change of sea surface temperature (SST). 2) To count the change of number of studied species per ecosystem over decadal periods. 3)

To define the major biogeographical regions and transition zones for freshwater fish

The species status distinguishes ‘native’ from ‘exotic’ species (i.e. non-native species introduced in the Amazon Basin) 5 and the occurrence species status is divided in

glanis (W-sites) exhibited significantly lower total species richness, native species richness, diversity, evenness, biomass or density than sites where environ- mental conditions

Only pairs of barred flagtail (small Group Size) maintained a high cohesion (Φ = 0.79 on average) and a medium Speed (0.36 m s -1 ), but both values decreased dramatically

Son travail photographique a fait l’objet d’expositions individuelles et collectives, notamment à L’Espace VOX (2002), à la galerie René Blouin et à la TPW Gallery de Toronto

In this study we investigated the interrelations between the invasive amphipod Dikerogammarus vil- losus and the invasive fish species Neogobius melanostomus in their effects on