Marine bacteria as indicators of upwelling in the Sea
The “oxidase reaction” (using p-amino-dimethyl-aniline oxalate as the reagent) has been used to distinguish oxidase-negative from oxidase-positive bacteria from the sea, when grown on membrane filters. By this means, it has been shown (a) that under conditions of stable stratification of the sea as in the tropics, a relationship exists between the percentage incidence of oxidase negative bacteria in the flora and the depth of the water; (b) that the maximum value for this percentage incidence (100) is reached at or immediately below the upper limit of the oxygen minimum layer; (c) that this percentage value (expressed as Oxⁿvalues) may be used to demonstrate the movements of water masses during upwelling. Such upwelling as indicated by theoretical findings and by temperature determinations along two transects off the west coast of Ceylon during the north east monsoon, has been confirmed by the distribution of Oxⁿvalues at these transects.
| Main Author: | |
|---|---|
| Format: | article biblioteca |
| Language: | English |
| Published: |
1963
|
| Subjects: | Biology, Oceanography, oceanic upwelling, water masses movements, marine bacteria, oxidase reaction, |
| Online Access: | http://hdl.handle.net/1834/32482 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|