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Ecology

Chapter 2 words

TermDefinition
abioticfactor Nonliving factor in the environment
biological community interacting populations that occupy the same area at the same time
biome large group of ecosystems that have a similar climate
biosphere portion of earth that supports life
bioticfactor Living factor in the environment
commensalism one benefits the other is unaffected
ecology study of interactions of organism and their environment
ecosystem biological community and all the abiotic factors that affect it
habitat area where an organism lives
mutualism both organisms benefit
niche role of an organism in its environment
parasitism one benefits the other is harmed
population organisms of one species that live in the same place at the same time
predation one organism consuming another
symbiosis two organisms living in a close relationship
autotroph organism that produces its own food
biomass total mass of living matter at each trophic level
carnivore eats only animals
detritivore eats fragments of dead matter, returning nutrients to ecosystem
foodchain simple model that shows how energy flows through an ecosystem
foodweb model representing interconnected food chains
herbivore eats only plants
heterotroph organism that gets energy from other organisms
omnivore eats plants and animals
trophic level step in a food chain
biogeochemical cycle exchange of matter through the biosphere
denitrification converting nitrogen compounds back into nitrogen gas
matter anything that takes up space
nitrogen fixation capturing and converting nitrogen into a useable form
nutrient chemical substance that an organism must obtain to sustain life
Created by: mrbstp
 

 



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