Amazon River Carbon Cycling Data from Drought and Normal Years

Fourteen river and stream sites in Amazonas and Acre, Brazil, were sampled for carbon and water chemistry variables. Measurements include carbon pools, CO2 respiration and evasion, dissolved oxygen isotopes, and bacterial cell concentration. Data collection occurred from July to September 2005 during a severe drought, with eight sites resampled in August-September 2006 under normal conditions.

Use Cases

• Analyzing the relationship between drought conditions and riverine CO2 evasion using calculated CO2 variables.
• Comparing carbon pool concentrations across white-water, clear-water, and black-water river types.
• Investigating bacterial cell concentration dynamics in relation to dissolved oxygen isotope (delta 18O-O2) measurements.
• Modeling seasonal and interannual variability in aquatic carbon cycling using data from 2005 and 2006.

Strengths

• Covers 14 distinct sampling sites across three major Amazon river water types.
• Provides temporal comparison with data from a drought year (2005) and a normal year (2006) for eight sites.
• Includes both measured variables and calculated derivatives like total CO2 evaded.

Limitations

• Exact column names, row counts, and dataset size are not provided by any source.
• Sources conflict on the last updated date, reporting both 2006-09-25 and 2026-03-13.

Provenance

Source

ORNL_CLOUD

Collection Method

Field sampling of river water for laboratory analysis.

Time Range

2005-07 to 2006-09

Freshness

2026-03-13 01:18:00.394007

Geography

Amazonas and Acre, Brazil (Amazon Basin)