"Wyoming’s Natural Resources" script
By Zola Ryan
Title:Succession
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A king’s successor is the person who will inherit the kingdom when the king is gone. In ecology, succession is the process of one plant community after another inheriting a particular spot of land. |
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There are two types of succession – primary and secondary. Primary succession starts from scratch as living things such as lichens begin to grow on bare rock. |
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Secondary succession is much more common. It occurs after an existing plant community has been removed or altered by a disturbance, such as fire. This site was burned last summer and nearly all the existing plant material was removed. |
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Here we can see the earliest stage of secondary succession as annual grasses and forbs are establishing on the site. |
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Soon, perennial grasses such as western wheatgrass and Indian ricegrass will inherit this site. The plants we see today will become less and less common. |
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And eventually, shrubs such as sagebrush and rabbit brush will inherit the spot. |
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On this site, brush will be king until a new round of disturbance boots him off the throne, and the successional process starts again. |
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From the University of Wyoming Cooperative Extension Service, I’m Zola Ryan |
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