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ecological succession : ウィキペディア英語版
ecological succession

Ecological succession is the observed process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction.
The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. The ʺengineʺ of succession, the cause of ecosystem change, is the impact of established species upon their own environments. A consequence of living is the sometimes subtle and sometimes overt alteration of one's own environment.〔(【引用サイトリンク】url=http://www.psu.edu/dept/nkbiology/naturetrail/succession.htm )
It is a phenomenon or process by which an ecological community undergoes more or less orderly and predictable changes following a disturbance or the initial colonization of a new habitat. Succession may be initiated either by formation of new, unoccupied habitat, such as from a lava flow or a severe landslide, or by some form of disturbance of a community, such as from a fire, severe windthrow, or logging. Succession that begins in new habitats, uninfluenced by pre-existing communities is called primary succession, whereas succession that follows disruption of a pre-existing community is called secondary succession.
Succession was among the first theories advanced in ecology. The study of succession remains at the core of ecological science. Ecological succession was first documented in the Indiana Dunes of Northwest Indiana〔Smith, S. & Mark, S. (2009). The Historical Roots of the Nature Conservancy in the Northwest Indiana/Chicagoland Region: From Science to Preservation. The South Shore Journal, 3. http://www.southshorejournal.org/index.php/issues/volume-3-2009/83-journals/vol-3-2009/75-the-historical-roots-of-the-nature-conservancy-in-the-northwest-indianachicagoland-region-from-science-to-preservation〕 which led to efforts to preserve the Indiana Dunes.〔〔Smith, S. & Mark, S. (2006). Alice Gray, Dorothy Buell, and Naomi Svihla: Preservationists of Ogden Dunes. The South Shore Journal, 1. http://www.southshorejournal.org/index.php/issues/volume-1-2006/78-journals/vol-1-2006/117-alice-gray-dorothy-buell-and-naomi-svihla-preservationists-of-ogden-dunes〕 Exhibits on ecological succession are displayed in the Hour Glass, a museum in Ogden Dunes.〔Smith, S. & Mark, S. (2007). The cultural impact of a museum in a small community: The Hour Glass of Ogden Dunes. The South Shore Journal, 2. http://www.southshorejournal.org/index.php/issues/volume-2-2007/82-journals/vol-2-2007/104-the-cultural-impact-of-a-museum-in-a-small-community-the-hour-glass-in-ogden-dunes〕
==History==
Precursors of the idea of ecological succession go back to the beginning of the 19th century. The French naturalist Adolphe Dureau de la Malle was the first to make use of the word ''succession'' concerning the vegetation development after forest clear-cutting. In 1859 Henry David Thoreau wrote an address called "The Succession of Forest Trees" 〔(The succession of forest trees, and wild apples ). Archive.org. Retrieved on 2014-04-12.〕 in which he described succession in an oak-pine forest. "It has long been known to observers that squirrels bury nuts in the ground, but I am not aware that any one has thus accounted for the regular succession of forests." 〔Thoreau, H. D. (2013). Essays: A Fully Annotated Edition (J. S. Cramer, Ed.). New Haven, Connecticut: Yale University Press.〕 The Austrian botanist Anton Kerner published a study about the succession of plants in the Danube river basin in 1863.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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