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Ecosystems

QuestionAnswer
Ecology study of relationships between living organisms and their environment
Abiotic factors non-living
Biotic factors living
Abiotic determines biotic
Specie group of organisms producing viable fertile offspring
Population organisms of the same species in a given area at a given time
Community populations living and interacting with each other in an area
Habitat physical area where a species is found
Ecosystem community and its abiotic environment
Autotroph producers, synthesize organic molecules from simple inorganic substances in the enviroment
Heterotroph consumers, obtain organic molecules from other organisms
Detritivores organism that ingests nonliving organic matter
Saprotroph secretes digestive enzyme and absorbs organic molecules
mesocosm small sealed experimental area for conducting ecological research on sustainability
food chain shows transfer of energy between organisms from feeding
arrows on food chain point in direction of energy flow
trophic level the position of an organism occupies in a food chain
food web diagram showing how food chains are linked together into complex feeding relationships, shows community relationships
movement of energy light is the initial source of energy, photosynthesis by autotroph, energy passed to consumers
how much energy ten percent
top predators fewer organisms at higher trophic levels due to inefficient energy/nutrient transfer
pyramids of energy graphical representation of the amount of energy of each trophic level
unit for energy jK m-2 year-1
movements of nutrients nutrients recycled from feeding (unlike energy), death of organism causes inorganic/organic nutrients to transfer back to soil
saprotrophs and nutrients assist with decomposition
Created by: luciepike
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