Kalkflagellater
Kalkflagellater (eller coccolithophorider) er gulalger. Fytoplankton og nanoplankton; encellede havlevende organismer i størrelsen 15-100 mikrometer med en overflade af kokkolitter, kalkplader i størrelsen 2-25 mikrometer. Fortidige kalkflagellaters kokkoliter udgør en stor del af kridtet i Danmarks undergrund.
Eksterne links
- Cocco Express — Coccolithophorids Expressed Sequence Tags (EST) & Microarray Database
- University of California, Berkeley. Museum of Paleontology: "Introduction to the Prymnesiophyta".
- The Paleontology Portal: Calcareous Nanoplankton Arkiveret 23. januar 2021 hos Wayback Machine
- What is a Coccolithophore? Arkiveret 16. maj 2008 hos Wayback Machine
- Emiliania huxleyi Home Page
- BOOM — Biodiversity of Open Ocean Microcalcifiers Arkiveret 26. januar 2009 hos Wayback Machine
- INA — International Nannoplankton Association
- Nannotax Arkiveret 9. april 2012 hos Wayback Machine – illustrated guide to Neogene coccolithophores and other nannofossils.
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Cwall99 lg.jpg
Under certain conditions, en:Emiliania huxleyi can form massive blooms which can be detected by satellite remote sensing. What looks like white clouds in the water, is in fact the reflected light from billions of coccoliths floating in the water-column.
Under certain conditions, en:Emiliania huxleyi can form massive blooms which can be detected by satellite remote sensing. What looks like white clouds in the water, is in fact the reflected light from billions of coccoliths floating in the water-column.
en:Landsat image from 24th July en:1999, courtesy of Steve Groom, en:NEODAAS, Plymouth Marine Laboratory. This bloom attracted considerable coverage in the UK media.
Coccolithophore bloom.jpg
NASA SeaWiFS image taken on April 25, 1998, showing the en:coccolithophore en:bloom in the en:Bering Sea. This is not a false-color image: the greenish color is caused by the high concentration of en:phytoplankton. NB Subsequent research suggests that this image, and others from the area showing bright waters early in the year, probably show resedimented particles not an active coccolithophore bloom (Broerse et al. 2003, Continental Shelf Research, 23, 1579-1596).
NASA SeaWiFS image taken on April 25, 1998, showing the en:coccolithophore en:bloom in the en:Bering Sea. This is not a false-color image: the greenish color is caused by the high concentration of en:phytoplankton. NB Subsequent research suggests that this image, and others from the area showing bright waters early in the year, probably show resedimented particles not an active coccolithophore bloom (Broerse et al. 2003, Continental Shelf Research, 23, 1579-1596).
Gephyrocapsa oceanica color.jpg
Forfatter/Opretter: Photo by NEON ja, colored by Richard Bartz, Licens: CC BY-SA 2.5
Gephyrocapsa oceanica KAMPTER from Mie Prefecture, Japan. The image was taken by means of a scanning electron microscope (JEOL JSM-6330F), hence the colors are artificial. Scale bar = 1.0 μm.
Forfatter/Opretter: Photo by NEON ja, colored by Richard Bartz, Licens: CC BY-SA 2.5
Gephyrocapsa oceanica KAMPTER from Mie Prefecture, Japan. The image was taken by means of a scanning electron microscope (JEOL JSM-6330F), hence the colors are artificial. Scale bar = 1.0 μm.
Coccolithus pelagicus.jpg
Forfatter/Opretter: Richard Lampitt, Jeremy Young, The Natural History Museum, London, Licens: CC BY 2.5
Forfatter/Opretter: Richard Lampitt, Jeremy Young, The Natural History Museum, London, Licens: CC BY 2.5
Coccolithus pelagicus ssp. braarudii.
Coccolithus pelagicus; coccosphere. Location: N. Atlantic; 48N, -20E; 3200m
image sets Taxa - Coccolithophores - London NHM/Roscoff