Phytoplankton bloom research. Scientist retrieving a plankton net from a river while a graduate student and hydrologist conduct water-quality sampling. These samples will be used in studies that examine whether urea pollution in the watershed is linked to periodic blooms of Pseudonitzschia sp. phytoplankton. Photographed in a tributary of the Manokin River, Maryland, USA. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Ausmus, Stephen / US Department of Agriculture |
Bildgröße: | 3750 px × 2500 px |
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