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THE RESPONSE OF NATURAL MICROBIAL POPULATIONS IN SEAWATER TO ORGANIC ENRICHMENT 1
Author(s) -
Vaccaro Ralph F.
Publication year - 1969
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1969.14.5.0726
Subject(s) - seawater , heterotroph , bioassay , environmental science , natural (archaeology) , environmental chemistry , ecology , oceanography , biology , biochemical engineering , biological system , chemistry , bacteria , geology , paleontology , engineering
When the heterotrophic potential technique is applied to marine situations, its analytical value is frequently impaired. In the open ocean, uptake responses often fail to develop despite use of a variety of 14 C labeled substrates. Elsewhere, the incidence of uninterpretable kinetic uptake patterns is excessively high. However, when the period of exposure to organic enrichment is extended to 24 hr or more, natural populations from coastal areas develop measurable and analytically useful uptake patterns. Besides providing an attractive source of test cells for bioassay purposes, this shift in uptake behavior can be exploited for studying the dynamics of heterotrophic behavior. An assessment of the marine environment in terms of these and related observations is provided.