marine microorganism

Marine bacteria are widely distributed and number, in the marine ecosystem plays a special role. The distribution of bacteria in marine law is: the larger the density of bacteria offshore ocean area larger density within the inner bay and estuary, especially large; surface at the interface of water and sediment bacteria in the deep water density than larger than normal sea water sediment large; different the type of substrate the disparity between the bacterial density is generally higher than the sandy soil. Less dense seawater bacteria per milliliter of sea water is sometimes not an isolated bacterial colonies, so you must use membrane filtration method: A certain volume of water sample of 0.2 micron pore size membrane filtration, bacteria in the sample gathered in the film , and then counting by direct microscopy or culture counts. Seawater density of bacteria per 40 ml is generally a few to dozens. Often found in the marine survey of a dramatic increase in the number of bacteria in the water layer, micro-distribution of this phenomenon depends on the water in the distribution of organic matter. After red tide in general the number of bacteria is often accompanied by the growth peak. Some people tried to use to indicate the distribution of different microbial groups or thermo cline water at the interface characteristics of the accumulation of organic matter, and then analyzes the source or the transfer of water masses in the law.