10.3 Transfer and Trophic Levels Flashcards
Trophic levels
producers primary consumers, secondary consumers, tertiary consumers, quaternary consumers; where a species is on a food chain
autotroph
producers
heterotroph
consumers
herbivore
only eats plants
carnivore
only eats animals
omnivore
eats plants and animals
detrivore
eats dead matter
keystone species
a species that has an influential ecological role and increases biodiversity
invasive species
a non-native species that out-competes native species and decrease biodiversity
food web: producers
at the bottom; don’t eat anything
food web: primary consumers
anything that eats a producer
food web: secondary consumers
anything that eats a primary consumer
food web: tertiary consumers
anything that eats a secondary consumer
food web: quaternary consumers
anything that eats a tertiary consumer
Trophic Cascade: direct effect
affects the Trophic levels directly above or directly below
Trophic Cascade: indirect effect
affects the trophic levels not directly above or directly below
Trophic Cascade: solid arrow
direct effect
Trophic Cascade: dashed arrow
indirect effect
Trophic Cascade: plus sign
positive effect
Trophic Cascade: minus sign
negative effect
food web vs Trophic Cascade model
food web: what eats what
Trophic Cascade: the effects of what eats what on the ecosystem