Oligotrophic lake

…Originally a term in limnology, it refers to the phenomenon in which an oligotrophic lake changes into a eutrophic lake over a long period of time. Currently, it is used in a broader sense to refer to the phenomenon in which the concentration of nutrients in the water increases and the productivity of plants in the water increases, regardless of the type of water body. In other words, the phenomenon in which an oligotrophic water body becomes eutrophic.

*Some of the terms that refer to "oligotrophic lake" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…元来は陸水学の用語。長い年月の間に貧栄養湖oligotrophic lakeが富栄養湖eutrophic lakeに移り変わっていく現象をいう。現在はより広義に，水域の種類にかかわりなく，水中の栄養塩濃度が増加し，水域の植物の生産活動が高くなっていく現象，いいかえると，貧栄養的水域が富栄養的になっていく現象を指す。…

※「oligotrophic lake」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