...The name was given by TH Huxley (1858) to the disk- or oval-shaped calcite found in deep-sea sediments in the North Atlantic. It was later discovered to be a part of the group known collectively as calcareous nannoplankton, secreted by a single-celled, planktonic algae belonging to the haptophyte class called Coccolithophorida. There are more than 150 species of extant Coccolithophorida, including Coccolithus pelagicus , and with the exception of a few species, they photosynthesize and reproduce in the photic zone, which occupies the surface layer of the ocean waters of the oceans other than the Arctic and Antarctic Oceans, about 150 meters deep. ... *Some of the terminology that mentions "Coccolithophorida" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…北大西洋の深海堆積物より発見された円盤ないし小判状の方解石に対しT.H.ハクスリーが命名したもの(1858)。後に,これは石灰質ナンノプランクトンと総称されるグループの一員で,コッコリトフォリーダCoccolithophoridaと呼ばれる,ハプト藻類に属する単細胞の浮遊性藻類の分泌したものであることが判明した。現生のコッコリトフォリーダはCoccolithus pelagicusなど150種以上に達するが,少数種を除き,北極海および南極海以外の大洋水の表層約150mを占める透光帯において光合成を営み,繁殖している。… ※「Coccolithophorida」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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