Chapter 10

Chapter 10 - Chapter 10- Distribution and Spatial Structure...

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Chapter 10- Distribution and Spatial Structure of Populations Population- individuals of a species within a given area o Subpopulations- individuals move less frequently than they would if the habitat were homogeneous o Distribution- geographic area occupied by pop o Population structure- density, spacing of individuals, proportions of individuals of each sex and in each age class Limited to suitable habitats o Fundamental niche- range of physical conditions over which species can persist o Realized niche- actual occupied space due to limitations of conditions, predators, pathogens, and competition Ties populations to their environments o Dispersal limitation- absence of a population from suitable habitats because of barriers…mountains, oceans… Overcome by humans carrying them, knowingly and unknowingly o Migration Due to seasons Response to depletion of resources Distribution of species o Ecological niche modeling- maps known occurences of a species in a
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Chapter 10 - Chapter 10- Distribution and Spatial Structure...

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