Diatoms, SEM

Référence de la vidéo 11943498
Diatoms. Animated coloured scanning electron micrograph (SEM) of a variety of diatoms. 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. A unique feature of diatom cells is that they are enclosed within a cell wall made of silica (hydrated silicon dioxide) called a frustule.
Licence : Droits gérés
Crédit : Science Photo Library / Gschmeissner, Steve
Model Release : Non requis
Durée : 10 Secondes
Aspect ratio : 16/9
Restrictions : -

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