Ecosystems
Ecosystems: Populations and Succession- in May and June of 1988, after an extended drought, Yellowstone National Park was covered with a large number of fire because of lightning. Although the fires were devastating, nature had started its process of vegetation all over again within two weeks. As time progressed, so did vegetation. I. Populations Dynamics- each species in an ecosystem exists as a population * population equilibrium- a state of balance between births and deaths in a population A. Population Growth Curves- when the size of a population is plotted over time. Two basic kinds of curve can be seen: s-curves and j-curves. B. Biotic Potential versus Environmental Resistance- see definitions below * biotic potential- the inherent capacity of an organism or species to reproduce and survive * recruitment- the process of adding new individuals to a population or subpopulation (as of breeding individuals) by growth, reproduction, immigration, and stocking * reproductive strategies- to produce massive numbers of young, but then leave survival to the whims of nature is the first reproductive strategy, the second strategy is to have a much lower reproductive rate, but then care for and protect the young to enhance recru
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Some common words found in the essay are:
Plant-Herbivore Dynamics-, Environmental Resistance-, Nonequilibrium Systems-, Americas Committees, Critical Numbers-, Predation Animals-, Succession- Fire, Pressures Population-, Ecological Succession-, National Park, below *, population growth, * population, competition- competition species, population population, species *, natural ecosystems, population *, definition below, principle ecosystem, definition below *, principle ecosystem sustainability-, definitions below *, ecosystem sustainability-,
Approximate Word count = 1109
Approximate Pages = 4 (250 words per page double spaced)
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