…However, a gradient can also be seen when a mutation spreads due to migration or other factors, regardless of natural selection. When a clear gradient exists in ecological factors such as soil moisture or salt concentration in a slightly smaller area than a geographical gradient, and a certain trait shows continuous variation along this gradient, it is called an ecological gradient. [Omi Onishi]. … *Some of the terminology that mentions "ecocline" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…しかし,自然淘汰とは無関係に,移住などによって変異が広まっていくときにもこう配は見られる。地理的こう配が見られるよりも,もう少し狭い地域内で,土壌中の水分や塩分の濃度などの生態的要因に明確な傾斜が存在し,それに沿ってある形質が連続的な変異を示すときには生態こう配ecoclineと呼ばれる。【大西 近江】。… ※「ecocline」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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