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Definition of Primary succession

Primary succession Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
The development of plant and animal communities in a land area that does not contain topsoil, for example in an area covered by lava that has solidified. This type of succession depends on the slow weathering of rock through weathering or biological processes. Compare with Secondary Succession.
Primary succession Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period.

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