click below
click below
Normal Size Small Size show me how
Population Dynamics
Population Dynamics Vocab
Term | Definition |
---|---|
Carrying Capasity | The largest population that an environment can support at any given time. |
Climax community | a stable, mature community that undergoes little or no change in species over time |
Density-dependent factor | A variable affected by the number of organisms present in a given area |
Density-independent factor | a variable that affects a population regardless of the population density, such as climate |
Emigration | The movement of individuals out of a population. |
Exponential Growth Model | The pattern for population increase under ideal conditions. J-shaped growth curve is characteristic. The model assumes resources are unlimited. equation: dN/dt= RmaxN |
Immigration | Movement of individuals into an area occupied by an existing population |
Limiting Factors | any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms |
Logistic Growth Model | a description of idealized population growth that is slowed by limiting factors as the population size increases nad carrying capacity. (S shaped Curve) |
Mortality | The ratio of deaths in an area to the population of that area |
Natality | The ratio of live births in an area to the population of that area |
Population Density | the number of individuals of the same species that live in a given unit of area. |
Primary Succession | succession that begins in an area that previously did not support life |
Secondary Succession | the process by which one community replaces another community that has been partially or totally destroyed |