Nostoc cyanobacteria,spherical colonies. Micrograph of a mass of Nostoc sp. filamentous cyanobacteria found on the surface of soil. Nostoc algae have the ability to fix atmospheric nitrogen in specialized cells,the heterocytes,thereby playing a major role in soil fertility. Nostoc is frequently abundant in flooded rice paddies,where it contributes to the fertilization of some 2 million hectares. They have a wide distribution and are commonly found in soil and on mud,rocks and plants. Microscopic contrast technique : Differential interference contrast. Magnification: 100x when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Guenther, Gerd |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |