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Density-Dependent Limiting Factor

Density-Dependent Limiting Factor. Limiting Factor that Depends on Population Size. Competition. Organisms compete with one another for available food, water, space, sunlight etc… Example: Puffins compete for limited nesting sites. Predation. Predator-Prey Relationships

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Density-Dependent Limiting Factor

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  1. Density-Dependent Limiting Factor • Limiting Factor that Depends on Population Size

  2. Competition • Organisms compete with one another for available food, water, space, sunlight etc… • Example: Puffins compete for limited nesting sites

  3. Predation • Predator-Prey Relationships • Regulation of a population by predation. • Ex: Sea otters and killer whales regulate each others growth.

  4. Parasitism • Organisms that take nourishment at the expense of their host, weakening or killing them

  5. Density-Independent Factor • Affect all populations in similar ways, regardless of population size. • Usually are: • Weather • Natural Disasters • Seasonal Cycles • Human Activities

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