Population Size

all members of one species that live together in the same habitat

biotic and abiotic factors

food water shelter weather/climate temperature

tolerance range carrying capacity competitive exclusion

range of abiotic factors an organism can tolerate

total number of organisms that can be supported by an ecosystem

prevents the overall population of an ecosystem from becoming too large

habitat destruction of rainforests and wetlands

remediation wildlife refuge creation wetland conservation

birth/death rate animal migration immigration/emigration available niches resource supply

number of births that occur in relation to the overall population

number of deaths that occur in relation to the overall population per year

birth rate-death rate

short life span produce large number of offspring in a short period of time

algae and fruitflies

long life span produce few offspring

elephants, giant tortoise

seasonal movement of organisms between locations

change in food or water supply change in climate reproduction

permanent movement of organisms from a native location to a foreign location

distribution of age groups within a population

how an where organisms are located can be even, clumped, or random distribution

amount of organisms per unit of an area

number of members of a species in a given population