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Ecology unit 2

TermDefinition
ecology the study of interactions between living things
community collection of different populations that live in a large area
hetertroph obtains energy by consuming others
mutualism ecological relationship between two species when each benifit
trophic level level of nourishment in a food chain
density independent factor environmental resistance that affects a population
r-selected species rapid reproduction and short life spans
specialist a consumer who eats only one type of organism
biotic factor a living factor in an ecosystem
ecosystem collection of living and nonliving things in an area
decomposer breaks down dead stuff into simpler components
parasitism relationship where one organism benefits and one is harmed
carrying cappacity the number of individuals that the environment can support
habitat combined abiotic and biotic factors found in an area
abiotic factor a nonliving thing in an ecosystem
producer obtains energy from abiotic factors
commensalism relationship where one benefits and one is not effected
food chain model that links organisms by energy flow
density dependent factor enviornmental resistance that effects a population that is crowded
exponential growth dramatic increase of population in a short period of time
k-selected species few offspring, long life span
niche any organisms place/role in an ecosystem
species any individual kind of species
competition relationship when two organisms attempt to get the same thing
food web model that shows complex feeding relationships
age structure graphs showing population by age
demography the study of human population growth
symbiosis ecological relationship between two species that
Autotroph Obtains energy from abiotic resources
Biome Regional/global community of abiotic and biotic factors
Death rate The number of deaths in an area
Birthrate Number of births in an area
Generalist A species that does not rely on only one prey species
Population All of the individuals of a species that live in the same area
Created by: 18verheb
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