nannoplankton


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nannoplankton

[¦nan·ō′plaŋk·tən]
(biology)
Minute plankton; the smallest (usually from 2 to 20 nanometers) plankton, including algae, bacteria, and protozoans. Also spelled nanoplankton.
References in periodicals archive ?
1996a): Calcareous nannoplankton mass extinction at the Cretaceous/Tertiary boundary: an update.
1978): Cretaceous nannoplankton biostratigraphy and oceanography of the northwestern Atlantic ocean.
As well, the record shows that more than 90 percent of the calcareous nannoplankton species went extinct at that time, and that most life disappeared from the upper portions of the ocean for almost a half million years, an effect geochemists call the "Strangelove Ocean.
Low-diversity opportunistic organisms that appear when other nannoplankton disappear persisted in the Northern Hemisphere for 40 thousand years after the impact and this hemisphere then took 270 thousand years to recover.
The darkness caused by the collision would impair photosynthesis and reduce nannoplankton reproduction.
Dinoflagellates, silicoflagellates, cyanobacteria, and nannoplankton abundance (cells/I) at Isla Espiritu Santo, Gulf of California.
1977): Changes in calcareous nannoplankton in the Cretaceous-Tertiary biotic crisis at Zumaya, Spain.
The stratigraphic position of the KTB is further confirmed by more recent studies of nannoplanktons from other outcrops; e.
Nannoplankton with calcium-based shells were the primary photosynthetic producers in the oceans until 65 million years ago, at the boundary between the Cretaceous and Palaeogene periods.
To trace the geographical distribution of the extinctions, Timothy Bralower from Pennsylvania State University in University Park and his colleagues examined published records that analysed fossil nannoplankton at 17 sites spread across the globe.
1981): Late Cretaceous nannoplankton and the change at the Cretaceous-Tertiary boundary.
Due to their microscopic size and the near-global distribution of many taxa, calcareous nannoplankton have become very popular for solving various stratigraphic problems, and many studies have been devoted to that end.