Logistic growth ap biology essay

population growth exponential growth logistic growth density independent density dependent abiotic biotic When scientists are studying a population that is a group of individuals of a particular species that are in a specific area, one of the things that they are interested in looking at is Logistic growth ap biology essay population growth.

In logistic growth, a population's per capita growth rate gets smaller and smaller as population size approaches a maximum imposed by limited resources in the environment, known as the carrying capacity (K K K K). Many populations exhibit the following growth curve: (a) Describe what is occurring in the population during phase A. (b) Discuss THREE factors that might cause the fluctuations shown in phase B. (c) Organisms demonstrate exponential (r) or logistic (K) reproductive strategies.

Explain these two strategies and discuss how they affect population size Paul Andersen explains how populations eventually reach a carrying capacity in logistic growth.

He begins with a brief discussion of population size ( N ), growth rate ( r ) and exponential growth. He then explains how density dependent limiting factors eventually decrease the growth rate until a population reaches a carrying capacity ( K ). Its growth levels off as the population depletes the nutrients that are necessary for its growth. In the real world, however, there are variations to this idealized curve. Examples in wild populations include sheep and harbor seals (Figure 19.

6). In both examples, the population size exceeds the carrying capacity for short periods of time and then falls Learn essays 4 biology with free interactive flashcards. Choose from 500 different sets of essays 4 biology flashcards on Quizlet.

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