LBA-ECO ND-30: Water Chemistry from an Amazon Forest Rainfall Exclusion Experiment
Updated 1mo ago
6filesBIN
Available on 2 platforms
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Description
Five data files contain chemical analyses of rainfall, throughfall, litter leachate, and soil water samples collected every two weeks from May 17, 1999 through May 10, 2006. The data originates from a controlled experiment in the Tapajós National Forest, Brazil, where a 1-hectare treatment plot had approximately 60% of throughfall diverted from late January 2000 to December 2004 to simulate severe drought. Measurements include alkalinity, conductivity, pH, and selected anions and cations analyzed by ion chromatography.
Use Cases
Analyzing changes in soil and water chemistry over time in response to an induced drought treatment.
Comparing nutrient concentrations (e.g., calcium, magnesium, potassium) across different sample types like rainfall, throughfall, and litter leachate.
Modeling the impacts of reduced rainfall on forest nutrient cycling and soil moisture dynamics.
Calibrating or validating ecosystem models for humid tropical forests under water stress scenarios.
Strengths
Provides a long-term, high-frequency time series with biweekly sampling over nearly seven years (1999-2006).
Includes a controlled experimental design with a 1-hectare treatment plot and a comparable 1-hectare control plot.
Contains detailed water chemistry measurements, including specific ions analyzed by ion chromatography.
Limitations
Column names and exact row counts are not provided in the available metadata, limiting immediate understanding of the data structure.
There is a conflict in the 'last updated' date between platforms (2006 on NASA Earthdata vs. 2026 on Data.gov), suggesting potential metadata management issues.
The license is specified only as 'other-license-specified' without explicit terms, requiring further investigation for reuse.
Provenance
Source
National Aeronautics and Space Administration (NASA)
Collection Method
Samples were collected and chemically analyzed as part of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA-ECO) project.
Time Range
1999-05-17 to 2006-05-10
Freshness
2026-04-10 01:30:51.192913
Geography
km 67 Seca Floresta site, Tapajós National Forest, Brazil
License details are unclear ('other-license-specified'); users should verify terms before redistribution. The dataset is distributed across five comma-delimited files, but their specific contents and relationships are not described.