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Published byCharles Ménard Modified over 6 years ago
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Limiting Factors Environmental factors that affect an organism’s ability to survive in its environment Can be biotic or abiotic EX: food availability, predators, and temperature
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Factors that limit one population in a community may have an indirect effect on another population
EX: lack of water limits growth of grass, which will reduce the population of mice, and then reduce the population of hawks
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Ranges of Tolerance The ability of an organism to withstand fluctuation in biotic and abiotic tolerance for environmental change EX: Catfish can live in warm water with decreased oxygen, whereas bass cannot.
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Density DEPENDENT Factors
As population increases so do these factors Disease, competition, parasites, and food
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Density INDEPENDENT Factors
affect all populations regardless of their density Temperature, storms, floods, and drought
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Video Clips TD VI VOL RV
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Discussion Questions What happened to the wolf population as the necessary components (food, water, shelter) decreased? Can you brainstorm some ways to stop the wolf population from crashing as the limiting factors change?
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