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RECORD NUMBER: 231 OF 724

OLS Field Name OLS Field Data
Main Title Dissolved Free Amino Acids, Combined Amino Acids, and DNA as Sources of Carbon and Nitrogen to Marine Bacteria.
Author Joergensen, N. O. G. ; Kroer, N. ; Coffin, R. B. ; Yang, X. H. ; Lee, C. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Kongelige Veterinaer- og Landbohoejskole, Frederiksberg (Denmark). Dept. of Ecology and Molecular Biology. ;National Environmental Research Inst., Charlottenlund (Denmark). Div. of Marine Ecology and Microbiology. ;State Univ. of New York at Stony Brook. Marine Sciences Research Center.
Publisher c1993
Year Published 1993
Report Number EPA/600/J-94/006;
Stock Number PB94-140746
Additional Subjects Amino acids ; Deoxyribonucleic acid ; Bacteria ; Marine biology ; Carbon ; Nitrogen ; Cycles ; Metabolism ; Organic matter ; Ammonia ; Nitrogen oxides ; Assimilation ; Aquatic ecosystems ; Production ; Graphs(Charts) ; Nitrogen organic compounds ; Reprints ; Carbon budget
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB94-140746 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 05/14/1994
Collation 15p
Abstract
Utilization of naturally-occurring dissolved free and combined amino acids (DFAA and DCAA) and dissolved DNA (D-DNA) was studied in batch cultures of bacteria from 2 shallow marine environments, Santa Rosa Sound (SRS), Florida, USA, and Flax Pond (FP), Long Island, New York, USA. In addition to control experiments, cultures were enriched with various sources of C and N. In the SRS cultures, net C assimilation of DCAA, DFAA and D-DNA made up from 42 to 60% of net bacterial C production. The average, relative incorporation of C from DCAA, DFAA and D-DNA was 0.13, 0.77 and 0.10, respectively. The corresponding values of N were 0.10, 0.81 and 0.09. Addition of NH4(+), DFAA, or both, increased the incorporation of DCAA, DFAA and D-DNA. Incorporation of N from DCAA, DFAA and D-DNA equaled 111 to 219% of the bacterial N production. Including incorporation of NH4(+) and release of NO3(-), calculated net bacterial N incorporation made up 48 and 290% of bacterial N production. In the FP experiment, net assimilation of DCAA, DFAA and D-DNA equaled 66 to 91% (average 77%) of net bacterial C production. Largely all C incorporation was due to assimilation of DFAA. (Copyright (c) Inter-Research 1993.)