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Population Limiting Factors Mrs. Sandy Gomez
Population Limiting Factors • Are factors that may cause population’s size to decrease. • Under ideal conditions with unlimited resources, a population will grow exponentially
Population Limiting Factors • As resources become less available, the growth of a population slows or stops.
Population Limiting Factors • The two types of population limiting factors are: • Density-dependent limiting factors • Density-independent limiting factors
Density-Dependent Factors • Are limiting factors that depends on population size • Some of these limiting factors are: • Competition – organisms compete for resources • Parasitism and disease • Predation
Density-Dependent Factors • Competition – organisms compete for resources • Between members of the same species • Between members of different species
Density-Dependent Factors • Predation – when one species feeds on another • Predator – the organism that feeds on the prey • Prey – the organism being eaten
Density-Independent Factors • Affects all populations, regardless of the population size • Some of these factors are: • Unusual weather – heavy storms • Natural disasters – tornado, volcanic eruption • Seasonal cycles – insects die during winter • Human activities – clear-cutting forests