2 - Ecology Ecology the study of the interactions between...

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Ecology Ecology - the study of the interactions between organisms and their environment. Fields of ecological research Organismal Ecology - Image Population Ecology - Image Community Ecology - Image Ecosystem Ecology - Image Population ecology - the study of all the individuals of a species within a given area at a given time. Density and Dispersion (of populations) Population density - Image number of individuals that occur in a unit area. Patterns of dispersion - Image and Fig. 38.1 scatter of individuals clumped dispersion - Image fishes uniform dispersion - Image penguins random dispersion - Image trees Population Growth: Fig 38.2 Exponential growth curve - Image Reduction of r with increase in N - Image because as pop grow, resources decrease Logistic growth curve - Image and Fig 38.3 N = number of individual s in population t = elapsed time b = average birth rate/individual in the population d = average death rate/individual in the population r = b- d = the intrinsic rate of increase r
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This note was uploaded on 03/21/2008 for the course BIO 301M taught by Professor Jasper during the Spring '08 term at University of Texas.

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2 - Ecology Ecology the study of the interactions between...

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