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Microbial community structure at the U.S.-Joint Global Ocean Flux Study Station ALOHA: Inverse methods for estimating biochemical indicator ratiosModeling biogeochemical fluxes in the marine plankton requires the application of factors for extrapolation of biomass indicators measured in the field (chlorophyll a, adenosine triphosphate, bacterial counts) to biomass carbon or nitrogen. These are often inferred from culture studies and are poorly constrained for natural populations. At least squares inverse method with a simple linear model constrains the values of several common indicator ratios, giving self-consistent solutions that provide useful information about the structure of the microbial community at our North Pacific Ocean study site (Station ALOHA (A Long-term Oligotrophic Habitat Assessment)). These results indicate that the fraction of the microbial biomass that is autotrophic (pigmented) is greater in the mixed layer than at the deep chlorophyll maximum layer and that heterotrophic bacteria are a significant but not necessarily predominant component of the microbial community in the euphotic zone.
Document ID
19950052580
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Christian, James R.
(Hawaii Univ. at Manoa, Honolulu, HI, United States)
Karl, David M.
(Hawaii Univ. at Manoa, Honolulu, HI, United States)
Date Acquired
August 16, 2013
Publication Date
July 15, 1994
Publication Information
Publication: Journal of Geophysical Research
Volume: 99
Issue: C7
ISSN: 0148-0227
Subject Category
Oceanography
Accession Number
95A84179
Funding Number(s)
CONTRACT_GRANT: NSF OCE-87-17195
CONTRACT_GRANT: NSF OCE-88-00329
Distribution Limits
Public
Copyright
Other

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