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BISC 111/113:Lab 11: Population Growth 2: Difference between revisions
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BISC 111/113:Lab 11: Population Growth 2 (view source)
Revision as of 16:52, 26 February 2015
, 26 February 2015→Population regulation
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'''Density-dependent factors''' such as predators, quality of cover, parasites, diseases, and amount of food determine K, and therefore, may regulate populations by maintaining or restoring them to some equilibrium size. | '''Density-dependent factors''' such as predators, quality of cover, parasites, diseases, and amount of food determine K, and therefore, may regulate populations by maintaining or restoring them to some equilibrium size.<BR> | ||
'''Logistic Growth is a model of density dependent population growth that considers carrying capacity as a factor.'''<BR> | |||
A third model, the logistic population growth model, tends to be more realistic because it takes into account “environmental resistance” (K) or carrying capacity. K is the maximum, or equilibrium, population size that can be sustained theoretically by the environment. When K is reached the population growth rate is zero due to a balance of births and deaths. K is influenced by resource availability, waste accumulation, and other density-dependent factors (see below). | A third model, the logistic population growth model, tends to be more realistic because it takes into account “environmental resistance” (K) or carrying capacity. K is the maximum, or equilibrium, population size that can be sustained theoretically by the environment. When K is reached the population growth rate is zero due to a balance of births and deaths. K is influenced by resource availability, waste accumulation, and other density-dependent factors (see below). | ||
