Unit 3 Study Guide (2)

Unit 3 Study Guide (2) - Click to edit Master subtitle...

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Unformatted text preview: Click to edit Master subtitle style 12/16/10 Unit three review 12/16/10 Population Structure (Ch. 13)  Terms: Population- individuals of the same species in a given area. Density- number of individuals per unit area. Geographic range- over all distribution of a population. Dispersion- spacing of individuals within a population. Dispersal- movements of individuals between subpopulations of a population. 12/16/10 Understand the following:  The geographic range of a species is dependent upon? Presence of suitable habitat.  Do species occur in ever habitat throughout their geographic range? no  Name two reasons for the existence of patches of suitable habitat. Barriers to dispersal-cliffs and competition.  Understand the 3 patterns of dispersion and what causes the patterns to occur. 1. 12/16/10 Understand the following:  Be able to recognize the patterns of dispersion (Figure 13.5)  Understand the reasons for dispersal. Crowding, increase in competition, change in food supply, temperature changes, light.  Know the three models of populations and the difference between each. Meta- population model- a population that consists of a set of subpopulations that occupy patches of a particular habitat type. Source-sink model- density of subpopulations differ among habitat patches. Landscape model-may take one or 12/16/10 Population Growth (Ch. 14)  Terms: Birth rate-the proportion of births in a population in a given time. Death rate-the proportion of deaths in a population in a given time. Natural rate of increase-the difference in birth rates and death rates. Natality-the number of births in a population....
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Unit 3 Study Guide (2) - Click to edit Master subtitle...

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