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bio hwk completed

bio hwk completed - Yasmine Karimi Bio102-Perrier April 5...

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Yasmine Karimi Bio102-Perrier April 5, 2008 Chapter 52 – Population Ecology Contrast the three patterns of dispersion (clumped, uniform, and random) and explain what species are found in each pattern. (pg 1138) Clumped: living in groups increases effectiveness of hunting, spreads the work of protecting and caring for the young, and helps exclude other individuals from their territory (ex: wolves) Uniform: maintained by aggressive interactions between neighbors (ex: birds) Random: landing at random, no set structure, just go with the wind blown (ex: dandelions) How does a life table allow us to develop survivorship curves? (pg 1139) using a general synopsis to give us points to place on the survivorship curve What two rates control most of the change in population size over time? (pg 1140) Reproductive and death What is carrying capacity (K)? (pg 1145) The maximum population size that a particular environment can support Contrast density dependent and density independent controls on population growth. (pg 1148) Density dependent: a birth rate or death rate that changes with the population density Density independent: a birth rate or death rate that does not change with population density
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