primary succession
Life from nothing
Primary succession is the ecological process by which life colonizes a barren environment where no soil exists—bare rock, cooled lava, or land exposed by a retreating glacier.
Pioneer species like lichens and mosses break down rock into soil, enabling grasses and eventually trees to establish.
The process unfolds over centuries: The volcanic island is undergoing primary succession.
- pioneer speciesFirst life establishing somewhere
- lichenSymbiotic rock dweller
- bare rockExposed stone surface
- colonizationForeign territorial takeover
- mossSpore-bearing ground cover
glacier · new land · soil formation · thin soil · lava · volcanic · barren · ecosystem · weathering · nutrients · organic matter · seedlings · hardy · sterile · lifeless · from scratch · gradual · hardy plants
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