Diatoms, SEM

Bildnummer 12643026
Diatoms, SEM
Diatoms. Coloured scanning electron micrograph (SEM) of an arrangement of diatoms to show their diversity. Diatoms are planktonic unicellular algae. The characteristic feature of diatoms is their intricately patterned, glass-like cell wall, or frustule. The frustule often has rows of tiny holes, known as striae. Diatoms may be extremely abundant in both freshwater and marine ecosystems; it is estimated that 20% to 25% of all organic carbon fixation on the planet is carried out by diatoms. This is possible because they contain chlorophyll. Diatoms are a major food resource for marine and freshwater microorganisms and animal larvae, and are a major source of atmospheric oxygen.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Gschmeissner, Steve
Bildgröße: 4763 px × 6858 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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