AP®︎ Environmental Science: Topic 2.3 Flashcards

The study of organisms’ distribution, ecological relationships, and community structure on islands

The number of different species present in an area

Which species are present in a community and the ecological relationships among them

The successful establishment of a population by a species arriving from elsewhere

The disappearance of a species from an island or other area while it continues to exist elsewhere

The collection of species in a mainland or other source area that could potentially reach an island

A species native to and naturally found only in a particular geographic area

The continuing replacement of some species by others through colonization and local extinction

A model in which island species richness tends to stabilize where the colonization and local-extinction rates are equal

The predicted number of island species at the intersection of the colonization and extinction curves

Immigration that reinforces a declining population or restores it after a decline, reducing local-extinction risk

Physical separation that reduces gene flow and allows populations to diverge over generations

The evolution of multiple species from one ancestral population as descendants adapt to different ecological roles

A species with a narrow ecological niche that uses limited resources, habitats, or environmental conditions

A species with a broad ecological niche that can use varied resources or tolerate a wide range of conditions

A species moved by people, intentionally or accidentally, outside its native range

An introduced species that establishes, spreads, and causes ecological, economic, or other harm