Combining food web theory and population dynamics to assess the impact of invasive species

The impacts of invasive species on resident communities are driven by a tangle ecological interactions difficult to quantify empirically. Combining niche model with population dynamic model, both allometrically parametrized, may represent consistent framework investigate in food web context when empirical data scarce. We used this assess the consequences an apex predator ( Silurus glanis ) peri-Alpine lake webs. Both increases and decreases abundances were highlighted differed accounting for different S. body sizes. Complementarily, prominence indirect effects, such as trophic cascades, suggested that common approaches only capture restricted fraction invasion through direct predation or competition. By leveraging widely available biodiversity data, our approach provide relevant insights comprehensive assessment management aquatic ecosystems.