| A | B |
|---|
| population | all the organisms of a species in a given area at a specific time |
| closed | a population that does NOT experience immigration or emigration |
| open | a population that does experience immigration or emigration |
| abiotic | the nonliving portion of an environment (light, temp.,soil, water) |
| biotic | the living portion of an environment (plants, animals, fungi) |
| clumped | a type of distribution where the members of a population are clustered in small groups |
| random | the type of distribution where members of a population are scattered on the landscape with no pattern |
| distribution | the spacial arrangement of individuals of a population on the lancscape |
| uniform | the type of distribution where members of a population are spaced out evenly |
| stationary | the phase of population growth when natality and immigration = mortality and emigration |
| death | the end result phase when a population size exceeds the carrying capacity |
| carrying capacity | the maximum population that can be sustained by the available resources in a population's environment |
| limiting factor | an environmental condition that inhibits the maximum size of a population |
| density-dependent | a limiting factor that is related to the population's size, (water, food, space) |
| density-independent | a limiting factor that affects the population no matter what size (disease, tornado, fire) |
| lag | the phase of population growth that occurs when a species is becoming adjusted to an area |
| immigration | the movement of members of a population into a given area |
| emigration | the movement of members of a population out of a given area |
| natality | the number of births in a population |
| mortality | the number of deaths in a population |
| population density | the number of individuals in a population in a (per) given geographical area |
| r-selective | type of population that lives short life spans and reproduces rapidly |
| k-selective | type of population that reproduces slowly, nurtures young, and lives long life spans |
| dispersal | the movement of individuals from one area to another |
| census | an exact count of the # of individuals in a pop. in given area |
| mark-recapture | population counting by use of trapping and labeling individuals in a population |
| average sampling method | population counting method where a section of individuals are counted and then estimated for the whole area |
