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Succession Review

Ecological succession terms and concepts.

TermDefinition
equilibrium the population of each species of the community is in balance with one another
disturbance catastrophic event occurring within an ecosystem such as wildfire, hurricane, flood, extreme drought, volcanic eruption, human habitat destruction and glacial action.
succession a series of predictable changes to a community that occur over time until a new climax community is established
primary succession succession beginning with exposed solid rock, with no layer of soil in which plants can start growing
secondary succession succession beginning with an existing layer of soil in place
primary succession disturbances volcanic eruptions with lava flows, receding glaciers leaving bare rock, and newly uncovered land caused by tectonic uplift or dropping sea levels.
secondary succession disturbances wild fires, human habitat destruction such as the clear-cutting of a forest, extended droughts or floods
pioneer species the first species of plants to grow in the succession process
thousands of years the length of time possibly needed to go from pioneer species to climax community in primary succession
10 - 200 years the length of time possibly needed to go from pioneer species to climax community in secondary succession
lichen small plants that have the ability to grow on rocks and slowly break-down the rocks to produce soil
climax community A stable group of plants and animals that is the end result of the succession process
Created by: jfcason
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