Warming mediates intraspecific multiple predator effects from an invasive crustacean

Abstract Invasive alien species impacts might be mediated by environmental factors such as climatic warming. For invasive predators, multiple predator interactions could also exacerbate or dampen ecological impacts. These effects may especially pronounced in highly diverse coastal ecosystems that are prone to profound and rapid regime shifts. We examine emergent of warming on the strength intraspecific from a successful gammarid Gammarus tigrinus , using functional response approach towards larval chironomids (feeding rates under different prey densities). Single maximum feeding were three-times higher at 24 °C compared 18 overall, with potentially destabilising type II responses exhibited. However, pairs gammarids exhibited turn temperature regime, whereby synergisms found lower (i.e. positive non-trophic interactions) antagonisms detected negative high densities. Accordingly, scenarios worsen impact this species, yet implications change dependent predator–predator interactions. Emergent between abiotic biotic should considered predictions across habitat types for species.