10.2 Ecology Flashcards
ecosystem
all organisms in a community and abiotic factors
four major systems
atmosphere, hydrosphere, lithosphere, biosphere
autotroph
producer Ex: grass, feed themselves
heterotroph
tertiary consumer, need others for nutrients
decomposers vs consumers
both heterotrophs and decomposers break down for nutrients
food web
producers, primary, secondary, tertiary, quaternary
producer
autotroph
consumers
heterotroph
herbivores
c1 or primary consumer
omnivores
c1+c2 primary and secondary
carnivores
c2+ secondary and up
food web example
wood rat
rattlesnake
hawk
primary consumer-herbivore
secondary consumer-omnivore
tertiary consumer-carnivore
pyramid of energy
of energy passing through each level offers over a period of time
pyramid of biomass
compares the mass of biological material at each level
pyramid of #’s
compares #’s of organisms at each level