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

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 and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 22, 2026, 22:20 (UTC)
Created April 1, 2025, 16:53 (UTC)
accessLevel public
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1120
license https://www.usa.gov/government-works
modified 2026-06-15T22:16:00Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
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spatial ["CARTESIAN", [{"WestBoundingCoordinate": -74.572, "NorthBoundingCoordinate": -1.817, "EastBoundingCoordinate": -58.798, "SouthBoundingCoordinate": -16.472}]]
temporal 1991-08-12/2003-01-26
theme {"Earth Science"}