@article{oai:ir.kagoshima-u.ac.jp:00008184,
 author = {ICHIKAWA, Toshihiro},
 issue = {2},
 journal = {南海研紀要},
 month = {2016-10-28},
 note = {The distribution of two trophic groups of bacteria, oligotrophs and eutrophs, was
studied. The former group grows only in nutrient-poor media, while the latter grows
in nutrient-rich media. Sea water samples for bacteriological examination were collected from areas in the eastern Indian Ocean and the South China Sea at nineteen stations during a cruise of the R.V.Hakuho-Maru, KH-76-5. Organic nutrient-rich and
nutrient-poor media were prepared for counts of viable bacteria. The vertical distribution of oligotrophs was essentially the same as for eutrophs. In general, the concentration of oligotrophs was comparable to that of eutrophs. One of the features
of the vertical distribution of bacteria was that the maximum and minimum layers
were usually found in the subsurface layers. This minimum layer corresponded to
the location of the thermocline. The maximum bacterial layer frequently coincided
with the maximum chlorophyll layer, especially in the Indian Ocean. This suggests
that one of the important factors involved in bacterial population sizes is the presence of phytoplankton.},
 pages = {194--199},
 title = {Distribution of Two Groups of Bacteria, Oligotrophs and Eutrophs, in the Indian Ocean and the South China Sea},
 volume = {4},
 year = {}
}