浮游植物
生态学
生态系统
营养水平
海洋生态系统
海洋学
生物
中生代
质体
初级生产者
元古代
古生物学
地质学
构造盆地
营养物
叶绿体
基因
构造学
生物化学
作者
Paul G. Falkowski,Miriam Katz,Andrew H. Knoll,Antonietta Quigg,John A. Raven,Oscar Schofield,F. J. R. Taylor
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2004-07-16
卷期号:305 (5682): 354-360
被引量:1417
标识
DOI:10.1126/science.1095964
摘要
The community structure and ecological function of contemporary marine ecosystems are critically dependent on eukaryotic phytoplankton. Although numerically inferior to cyanobacteria, these organisms are responsible for the majority of the flux of organic matter to higher trophic levels and the ocean interior. Photosynthetic eukaryotes evolved more than 1.5 billion years ago in the Proterozoic oceans. However, it was not until the Mesozoic Era (251 to 65 million years ago) that the three principal phytoplankton clades that would come to dominate the modern seas rose to ecological prominence. In contrast to their pioneering predecessors, the dinoflagellates, coccolithophores, and diatoms all contain plastids derived from an ancestral red alga by secondary symbiosis. Here we examine the geological, geochemical, and biological processes that contributed to the rise of these three, distantly related, phytoplankton groups.
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