Invasive species are a present and growing concern for conservation scientists. Invasive species are generally non-indigenous species with large, expanding populations that are causing significant (usually detrimental) effects in this new region. While many organisms and species are introduced to new habitats naturally, deliberately, and/or inadvertently, relatively few reach “invasive” status. There are numerous factors that determine the success or failure of a particular species to become established, including the attributes of the invaders and community vulnerability. Successful invasions can inflict profound ecological and economic costs. In response, there are a variety of methods used to prevent and control invasive species, such as eradication and restoration.
View this module in other languages:
Invasive Species and Mechanisms of Invasions (Ukrainian)
Invasions Biologiques et Contrôle des Espèces Envahissantes (French)
Great Lakes Under Stress: Invasive Species as Agents of Ecosystem Change
Story of an Invasion: A Case Study of the Rusty Crayfish in the Great Lakes
Applying Critical Thinking to an Invasive Species Problem