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Ecosystems

TermDefinition
Abiotic All of the non-living factors in an ecosystem
Biotic All of the living factors in an ecosystem
Ecosystem A community of living organisms interacting with living and non-living factors
Producers Living organisms that make their own food (plants)
Primary consumers Organisms that consume producers (herbivores)
Secondary consumers Organisms that consume primary consumers (omnivores or carnivores)
Tertiary consumers Organisms that consume secondary consumers (carnivores)
Trophic level The level an organism occupies in an energy pyramid/food chain/food web - each level receives 10% of the previous level's energy
Decomposers Organisms that break down other living matter
Primary succession When a new area of barren land is populated by a group of species for the first time.
Secondary succession When an ecosystem gradually recovers and repopulates after a disturbance
Ecological succession Process over time of organisms in an ecological community
Population A group of the same species
Community Many populations living together in a particular area
Climax community A community that reaches a stable state of maturity
Pioneer species The first organism to colonize a new or disturbed area
Disturbance A temporary change in the environment that can have a significant impact on an ecosystem
Arrow in a food web Points to the organism that is CONSUMING/EATING
Sustainable Ecosystem An ecosystem that can remain diverse and productive over time without outside influence or assistance
Food web/chain A model of energy transfer that can show how the food chains in a community are interconnected
Biodiversity The number and variety of organisms found in a specific region
Energy pyramid A model that shows the amount of energy available in each link of a food chain
Natural disaster An event caused by nature that results in widespread damage
Overfishing Catching too many fish at once, so the breeding population becomes too depleted to recover naturally
Created by: anjali.soni
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