Ecology Vocabulary set 4
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13 terms
Terms | Definitions |
|---|---|
 Population density | The number of organisms per unit area. |
| Dispersion | The pattern of spacing of a population within an area. The 3 main types are uniformed, clumped, and random. |
| Limiting factors | An environmental factor that tends to limit population size. |
| Density independent factors | Any factor that is not dependent on popultion density. Usually this factor is abiotic such as a rock. |
| Density dependent factors | Any factor that is dependent on population density. This factor is usually biotic. |
| Population growth rate | How fast a given population grows. |
| Natality | Birth rate |
| Mortality | Death rate |
| Emigration | People leave any specific area. |
| Immigration | People moving into any specific area. |
| Exponential growth | A constant rat of growth. |
| Logistic growth | Populations can not grow exponentially forever. |
| Carrying capacity | The amount of organisms that one place can hold. |
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