| A | B |
|---|
| Population | a group of individuals of a single species that occupy the same general area. |
| Population size | The number of of individuals that it contains. |
| Population density | The number of individuals of a species per unit area or volume. |
| Dispersion Pattern | The way individuals are spaced within their area. |
| Birth rate | The number of births occuring in a period of time. |
| Death rate (Mortality rate) | The number of deaths in a period of time. |
| Life expectancy | How long, on average, and individual is expected to live. |
| Age structure | The proportion of individuals in different age-groups. |
| Survivorship curves | A graph showing the proportion of individuals alive at each age. |
| Growth rate | The amount by which a population's size changes in a given time. |
| Immigration | The movement of individuals into a population. |
| Emmigration | The movement of individuals out of a population. |
| Exponential Growth Model | Unregulated growth of a population. |
| Limiting factor | A factor that restrains the growth of a population. |
| Logistic Growth Model | Idealized population growth that is slowed by limiting factors as the population size increases. |
| Carrying capacity | The maximum population that an environment can support ("carry") at a particular time with no degradation to the habitat. |
| Density-independent (rates) factors | Factors that control the population size regardless of the number of individuals it includes. Ex. weather. |
| Density-dependent (rates) factors | Factors that control the population size like resources limitations that are triggered by increasing population density. |
| Inbreeding | Mating with relatives. |
| Population Ecology | Changes in the population size and the factors that regulate populations over time. |
| Mark-Recapture Method | A sampling technique used to estimate wildlife populations. |
| Clumped Dispersion | A pattern in which individuals are aggregated in patches. |
| Uniform (or Even) Dispersion | A pattern that often results from interactions among individuals of a population. |
| Random Dispersion | A pattern where individuals are spaced in a patternless, unpredictable way. |
| Intrinsic Rate of Increase | An organism's maximum capacity to reproduce. |
| Population-limiting factors | Environmental factors that restrict population growth. |
| Life Tables | A listing of survivals and deaths in a population in a particular time period and predictions of how long, on average, and individual of a given age will live. |
| Life History | The series of events from birth through reproduction to death. |
| R-Selection | Selection for life history traits that maximize reproductive success in uncrowded, unpredictable environments. |
| K-Selection | Organisms that mature and reproduce at a later age that produce few, well-cared-for, offspring. |
| Ecological Footprint | The amount of land needed to support our multiple demands on Earth's resources. |
| Demographic Transition | A shift from zero population growth in which birth rates and death rates are high to zero population growth characterized instead by low birth and death rates. |
| Renewable Resource Management | Harvesting the crop without damaging the resource. |
| Maximum Sustained Yield | Harvesting that should be done at a level that produces a consistent yield without forcing a population to decline. |
