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LBA-ECO CD-06 Isotopic Composition of Carbon Fractions, Amazon Basin River Water

Data Set Overview

Data setLBA-ECO CD-06 Isotopic Composition of Carbon Fractions, Amazon Basin River Water
Release date2012-09-21
ProjectLarge Scale Biosphere-Atmosphere
Time Period1991-08-12 to 2003-01-26


This data set includes measurements of standard geochemical variables, dissolved CO2, dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), fine particulate organic carbon (FPOC), and coarse particulate organic carbon (CPOC) in samples taken from 60 Amazonian river locations across the Amazon Basin from 1991 to 2003 (Mayorga et al., 2005). The 14C and 13C isotopic composition of DIC was measured on samples collected between 1991 and 2003. The 14C composition of organic carbon fractions was measured on samples collected from 1995 through 1996. There are four comma-delimited data files with this data set. Note that site descriptions include a categorization of each site by topography according to the percentage of the drainage area above 1,000 m elevation (Mayorga et al., 2005). Only means of geochemical and carbon-fraction results are provided. Both individual 13C and 14C measurements and mean results are provided.


Data set reference document


Mayorga, E., A.K. Aufdenkampe, C.A. Masiello, A.V. Krusche, J.I. Hedges, P.D. Quay, J.E. Richey, and T.A. Brown. 2012. LBA-ECO CD-06 Isotopic Composition of Carbon Fractions, Amazon Basin River Water. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Large Scale Biosphere-Atmosphere : The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an intensive scientific investigation of the tropical rainforest of Brazil and portions of adjacent countries. Like FIFE and BOREAS, this project uses intensive remote-sensing techniques and ground-based experiments to investigate the atmosphere-biosphere-hydrosphere dynamics of this large tropical region. The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question: "How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

Project data set list for Large Scale Biosphere-Atmosphere .

Companion Files

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  • CD06_C_Isotopes.pdf

Data Files

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Data File (Granule)File SizeDates
C_fraction_delta_values_ind_samples.csv 9.1 KB 1991-08-12 - 2003-01-26
Mean_C_fraction_delta_values.csv 1.9 KB 1991-08-12 - 2003-01-26
Geochemical_property_means.csv 6.9 KB 1991-08-12 - 2003-01-26
Sample_site_descriptions.csv 4.7 KB 1991-08-12 - 2003-01-26

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