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A STUDY OF THE DISTRIBUTION AND ACTIVITY OF MICROORGANISMS IN OCEAN WATER 1
Author(s) -
Hobbie John E.,
HolmHansen Osmund,
Packard Theodore T.,
Pomeroy Lawrence R.,
Sheldon Raymond W.,
Thomas James P.,
Wiebe William J.
Publication year - 1972
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.1972.17.4.0544
Subject(s) - phytoplankton , microorganism , biomass (ecology) , respiration , particulates , heterotroph , environmental chemistry , environmental science , photosynthesis , total organic carbon , particulate organic carbon , water mass , chemistry , ecology , oceanography , biology , botany , bacteria , nutrient , genetics , geology
Estimates of living mass and respiratory rate were made by several methods on large water samples taken at several depths at each of two ocean stations. Total microbial biomass estimates based on ATP determinations gave reasonable results in relation to phytoplankton biomass, total particulate organic carbon, and total particulate volume as determined by an electronic particle counter. Respiratory rate estimates based on O 2 uptake, electron transport system activity, and ATP were in moderately good agreement in surface water but diverged widely in deep water. Heterotrophic uptake of specific organic compounds seems to be related to numbers of active bacteria and not related to total microbial respiration. Photosynthetic rates and release of dissolved photosynthate are reported for both stations.