Week 4-Ecology Summer

Can make their own food, also called a producer

• autotroph

• heterotroph

cannot make their own food; also called consumer

• autotroph

• heterotroph

pertains to a position in a food chain or ecological pyramid occupied by a group of organisms with similar feeding

• food web

• food chain

• trophic level

a close, long term association between organism of different species

• symbiosis

• predation

• competition

ecological proces in which an animal (or an organism) kills and feeds on another animal (or an organism)

• competition

• predation

same or different members of species fight for limited resources

• predation

• competition

both benefit (+,+)

• mutualism

• parasitism

• commensalism

one benefits from harming another (+, -)

• mutualism

• commensalism

• parasitism

one benefits and the other is unaffected (+,0)

• mutualism

• parasitism

• commensalism

the increasing concentration of a particular substance such as a toxin as it moves up across the trophic levels in a food chain

• biological magnification

• biological reduction