Nonnative crayfish have been widely introduced and are a major threat to freshwater
biodiversity and ecosystem functioning. Despite documentation of the ecological effects of …

The concept of native range in invasion biology is difficult to define since, in many cases, this
type of range is unknown and cannot be determined. We investigate the uncertainties …

New species often invade ecosystems already dominated by previous invaders. Ornamental
freshwater crayfish, particularly parthenogenetic marbled crayfish (Procambarus virginalis) …

Despite the widespread introduction of nonnative species and the heterogeneity of
ecosystems in their sensitivity to ecological impacts, few studies have assessed ecosystem …

Habitat degradation has a major impact on freshwater ecosystems and also facilitates
biological invasions thus intensifying the problem. The survival of native species under …

Invasive species are proliferating globally and cause a range of impacts, necessitating risk
assessment and prioritization prior to management action. Experimentally derived estimates …

Invasive species are known to competitively displace native species via direct behavioural
interactions, or contests, which can result in limited access to valuable resources such as …

Relocation of threatened populations is a common method employed in conservation.
However, environmental differences in the new habitat may reduce the survival of relocated …

Invasive ecosystem engineers, such as dreissenid mussels, may facilitate subsequent
invaders. Despite their potential ecological importance, interactions between dreissenid …

Interference competition between native and invasive species can be an important driver of
the local extirpation of native species; however, extinctions resulting from competition are …