| 词条 | Ruderal species |
| 释义 |
A ruderal species is a plant species that is first to colonize disturbed lands. The disturbance may be natural{{spaced ndash}} for example, wildfires or avalanches{{spaced ndash}}or a consequence of human activity, such as construction (of roads, of buildings, mining, etc.) or agriculture (abandoned fields, irrigation, etc.). The word ruderal comes from the Latin rudus rubble. Ruderal species typically dominate the disturbed area for a few years, gradually losing the competition to other native species. However, in extreme disturbance circumstances, such as when the natural topsoil is covered with a foreign substance, a single-species ruderal community may become permanently established. In addition, some ruderal invasive species may have such a competitive advantage over the native species that they, too, may permanently prevent a disturbed area from returning to its original state despite natural topsoil. FeaturesFeatures contributing to a species' success as ruderal are:
QuantificationEcologists have proposed various scales for quantifying ruderality, which can be defined as the "ability to thrive where there is disturbance through partial or total destruction of plant biomass" (Grime, Hodgson & Hunt, 1988).[1] The ruderality scale of Grime presents values that are readily available, and it takes into account disturbance factors as well as other indicators such as the annual or perennial character of the plants. See also
References1. ^{{cite journal |author1=Hill, M.O. |author2=Roy, D.B. |author3=Thompson, K. |year=2002 |title=Hemeroby, urbanity and ruderality: bioindicators of disturbance and human impact |journal=Journal of Applied Ecology |volume=39 |issue=5 |pages=708–720 |doi=10.1046/j.1365-2664.2002.00746.x}} External links
4 : Ruderal species|Ecology terminology|Habitat|Botany |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。