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Ecological succession

Chapter 51 American Pagent

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Ecology Study Guide Chapter 51 Animal behavior is anything to do with animals and they way they function and reproduce. Proximate cause is the immediate trigger for a behavior. For example, if a zebra is drinking at a water hole, and all of a sudden it hears another zebra nearby make an alarm call, it may stop drinking immediately and start running away instead. The proximate cause of the zebra running away would be the alarm call. But the ultimate cause, or real reason why the zebra is running is survival. It is running away because it wants to survive. The alarm call is not the source of danger, but the alarm call alerts the zebra that danger, such as a lion, may be nearby and the lion can threaten the zebra's chance to survive.

Living in the Environment 16th Ed. : Ch.5 Key Terms

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Chapter 5 age structure A population?s age structure?the proportions of individuals at various ages?can have a strong effect on how rapidly it increases or decreases in size. biotic potential Species vary in their biotic potential or capacity for population growth under ideal conditions. carrying capacity (K) Together, biotic potential and environmental resistance determine the carrying capacity (K): the maximum population of a given species that a particular habitat can sustain indefinitely without being degraded. coevolution

succession

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7.1 Succession Ecological succession is the directional change in the composition of species that occupy a given area through time: it involves initial colonization and establishment of pioneer plant species, followed by their replacement with other species until a relatively stable community is formed. Ecosystems are made up of all the interacting biotic (food availability, competition and predation)and abiotic (non-biological environment ? pH, temperature, rainfall and humidity)factors in a particular area within which there are a number of communities of organisms. Ecosystems constantly change, Succession is the term used to describe these changes, over time, in the species that occupy a particular area. A sere (seral stage) is the series of stages in succession.

AP Biology Notes on Ecology

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UNIT 15 - ECOLOGY List of Terms Ecology: study of interactions of organisms with their environment and with each other Population: group of individuals of one species in one area that can breed and interact with one another Community: all the organisms in one area Ecosystem: All the organisms in an area and abiotic factors in that area Abiotic factors: nonliving, include temperature, water, sunlight, wind, rocks, etc. Biosphere: global ecosystem Biotic potential: max rate at which a population can increase under ideal conditions Influenced by factors like age at which reproduction begins, lifespan during which you can reproduce, # of reproductive periods in lifetime, and the max # of offspring the organism can produce
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