K
Kenneth M. Johnson
Researcher at University of Rhode Island
Publications - 18
Citations - 1782
Kenneth M. Johnson is an academic researcher from University of Rhode Island. The author has contributed to research in topics: Dissolved organic carbon & Ecosystem. The author has an hindex of 15, co-authored 18 publications receiving 1721 citations.
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Journal ArticleDOI
Coulometric total carbon dioxide analysis for marine studies: Automation and calibration
TL;DR: An automated instrument for the detection of total carbon dioxide (TCO2) was developed from the manual prototype of Johnson et al. as discussed by the authors, which was used to calibrate the detector, the whole analytical procedure was controlled by a microcomputer, and the unit was compact enough for field and shipboard use.
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Coulometric TCO2 analyses for marine studies; an introduction
TL;DR: In this article, an extractor-stripper removes CO2 that is measured coulometrically by the quantity of electricity (coulombs) used to electrogenerate OH− ions for the titration of the acid formed by the reaction of CO2 and ethanolamine.
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A comparison of four methods for determining planktonic community production1
Michael L. Bender,Karen D. Grande,Kenneth M. Johnson,John Marra,Peter J. le B. Williams,John McN. Sieburth,Michael E. Q. Pilson,Chris Langdon,Gary L. Hitchcock,J Orchardo,Carleton Hunt,Percy L. Donaghay,Kristina Heinemann +12 more
TL;DR: In samples from two coastal experimental ecosystems, the rate of respiration in the light (calculated from I80 data) was an order of magnitude greater than the rate in the dark, indicating that 14C uptake is not precisely fixed with respect to other measures of community metabolism.
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Dissolved carbohydrates in seawater. I, A precise spectrophotometric analysis for monosaccharides
TL;DR: A relatively precise and rapid method for the analysis of total dissolved monosaccharides at the concentrations that occur in seawater is described which uses 1-ml quantities for each analytical and control replicate.
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Dissolved organic matter and heterotrophic microneuston in the surface microlayers of the north atlantic.
John McN. Sieburth,Paula-Jean Willis,Kenneth M. Johnson,Curtis M. Burney,Dennis M. Lavoie,Kenneth R. Hinga,David A. Caron,Frederick W. French,Paul W. Johnson,Paul G. Davis +9 more
TL;DR: The observations indicate that the surface microlayers are largely heterotrophic microcosms, which can be as rich as laboratory cultures, and that an appreciable part of the dissolved organic carbon is carbohydrate of phytoplankton origin, released and brought to the surface by migrating and excreting phagotrophic protists.