Population ecology - Logistic Growth, Carrying Capacity, Density-Dependent Factors
Population ecology - Logistic Growth, Carrying Capacity, Density-Dependent Factors: The geometric or exponential growth of all populations is eventually curtailed by food availability, competition for other resources, predation, disease, or some other ecological factor. If growth is limited by resources such as food, the exponential growth of the population begins to slow as competition for those resources increases. The growth of the population eventually slows nearly to zero as the population reaches the carrying capacity (K) for the environment. The result is an S-shaped curve of population growth known as the logistic curve. It is determined by the equation As stated above, populations rarely grow smoothly up to the
Population ecology, study of the processes that affect the distribution and abundance of animal and plant populations. Interbreeding and long-term survival often depend on connectedness between populations, closed populations being more isolated and having less contact with one another than more open populations.
Introduction to Population Ecology
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Consider a population undergoing logistic growth : 1. At first, growth rate approximates r and the number of individuals increases rapidly. 2. As the population size N approaches the carrying capacity K
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