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Succession after disturbance: a boreal forest one year (left) and two years (right) after a wildfire.. Ecological succession is the process of change in the species that make up an ecological community over time.
Connell, Joseph H. and Ralph O. Slatyer. “Mechanisms of succession in natural communities and their role in community stability and organization.” The American Naturalist 111 (982) (Nov. - Dec. 1977): 1119-1144. Moorcroft, Paul. “Terrestrial Succession.” Organismic and Evolutionary Biology 55. Maxwell Dworkin, Cambridge. 4 April 2011.
One example of primary succession takes place after a volcano has erupted. The lava flows into the ocean and hardens into new land. The resulting barren land is first colonized by pioneer organisms, like algae, which pave the way for later, less hardy plants, such as hardwood trees, by facilitating pedogenesis, especially through the biotic acceleration of weathering and the addition of ...
Secondary succession is the secondary ecological succession of a plant's life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting ...
In ecology, allogenic succession is succession driven by the abiotic components of an ecosystem. [1] In contrast, autogenic succession is driven by the biotic components of the ecosystem. [1] An allogenic succession can be initiated in a number of ways which can include: Volcanic eruptions; Meteor or comet strike; Flooding; Drought; Earthquakes
However, a disturbance, such as fire, may kill the climax species, allowing pioneer or earlier successional species to re-establish for a time. [4] They are the opposite of pioneer species , also known as ruderal , fugitive, opportunistic or R-selected species, in the sense that climax species are good competitors but poor colonizers, whereas ...
Cyclic succession is a pattern of vegetation change in which in a small number of species tend to replace each other over time in the absence of large-scale disturbance. Observations of cyclic replacement have provided evidence against traditional Clementsian views of an end-state climax community with stable species compositions .
Three-spined stickleback fish have been a frequently studied species in ecological speciation.. Ecological speciation is a form of speciation arising from reproductive isolation that occurs due to an ecological factor that reduces or eliminates gene flow between two populations of a species.