Biological
Impacts
•Degradation of host
environment
–Water quality
•Temperature, DO, pH,
turbidity, eutrophication
•Displacement of native
animals and plants
–Competition for food and
space (aggression)
•Extinction of natives
–Introduction of new
diseases and parasites to natives
–Predation by new
invader
•Hybridization w/natives
–dilutes gene pool