|
Bacterioplankton - Wikipedia, the free encyclopedia (153 words) |
 | Bacterioplankton refers to the bacterial component of the plankton that drifts in the water column. |
| Most bacterioplankton (for instance, Bacillus and Nitrosomonas) obtain their energy through decomposition of other organisms, which largely renders them dependent on the phytoplankton for the production of dissolved organic matter as their main food source. |
| A few species of bacterioplankton are capable of photosynthesis and chemosynthesis. |
| NATURE VOL 361, 25 FEBURARY 1993 (1043 words) |
| Here we report that bacterioplankton activity in the surface layers of the oceans is suppressed by solar radiation by about 40% in the top 5 m of the water column in nearshore waters, whereas in oligotrophic open oceans suppression might be detectable to a depth of >lOm. |
| Bacterioplankton from near-surface (0.5 m depth) waters of a highly stratified water column were as sensitive to surface UV-B radiation as subpycnocline bacteria, indicating no adaptative mechanisms against surface solar radiation in near-surface bacterioplankton consortia. |
| In a stratified water column mixing is restricted and bacterioplankton in the surface waters may be exposed to high levels of UV-B during their entire life cycle, whereas bacterioplankton from the subpycnocline waters never experience noticeable levels of ultraviolet radiation. |
Feeds |
Contact