a species not native to a specific location

species is used to refer to a species that has a strong role in structuring a community. This species can occupy any trophic level in a food web.

a species of animal or plant that is seriously at risk of extinction

“only found in” species

A species that generally has a wide range of things in their diets as well as a pretty big are of habitat.

asian carp, burmese python, norway rat

Corals, Earth worms, beavers

a species likely, in the near future, to become an endangered species within all or much of its range

thrive under perfect conditions

require a very certain type of food or can only eat a very small range of things and usually has a very specific list of things needed in its habitat.

a species that serves as a measure of the environmental conditions that exist in a given locale.

Bison, prairie dog, otter

Black-footed Ferret, Tawny Nurse Shark, polar bear

mice or rats, think of them being EVERYWHERE

Omnivores animals, Cockroach, raccoon

Tubifex worms, greasewood, mosses

Fig trees, plants of the genus Ficus

Black rhino, Cross river gorilla, Amur leopard

dominant primary produce, kelp in kelp forest

Orchid mantis, sword-billed hummingbird, koala

They take food and habitat away from native species and have been known to prey on the eggs of other species.

Keystone species are those which have an extremely high impact on a particular ecosystem relative to its population .

Species are sometimes characterised by the population dynamics measure of critical depensation

Lack of wood storks in everglade ecosystems

They have good mechanisms for coping with “known” risks.