LBA-ECO LC-14 Root Biomass and Phenology, km 67 Site, Para, Brazil: 2001

This data set contains biomass estimates for coarse roots measured on the forest floor and measurements of fine root growth down to 2-m depth at the km 67 Rainfall Exclusion Experiment site, Tapajos National Forest, Brazil. The study site was part of a rainfall exclusion experiment that was conducted from 1999-2006 to develop an understanding of the physical processes driving the observed soil water dynamics at the site. All surface roots intersected along three 1000-m long x 1-m wide transects were identified to species, measured, and biomass calculated. The collections were made on January 26, 2001 during the experimental rain exclusion period.The fine root growth was measured from 0.5-m to 2-m depth with a rhizotron. The rhizotron tubes were inserted into deep soil pits in the control and treatment plots. Average root growth measurements are provided by depth interval on a monthly basis from July 25, 2000 to December 14, 2003. DATA QUALITY STATEMENT: The Data Center has determined that there are questions about the quality of the data reported in this data set. The data set has missing or incomplete data, metadata, or other documentation that diminishes the usability of the products. KNOWN PROBLEMS: There are discrepancies with the documentation, collection dates reported and collection method for fine roots utilizing rhizotrons.

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
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citation Nepstad, D.C., and P.R. Moutinho. 2015. LBA-ECO LC-14 Root Biomass and Phenology, km 67 Site, Para, Brazil: 2001. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/1268
graphic-preview-description Browse Image
graphic-preview-file https://daac.ornl.gov/graphics/browse/project/square/lba_logo_square.png
identifier C1000000101-ORNL_DAAC
issued 2015-01-27
landingPage https://doi.org/10.3334/ORNLDAAC/1268
language {en-US}
metadata_type geospatial
modified 2019-04-15
programCode {026:001}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash a5bf53cfbf96c6a02eda58734bc71a5ee43ab21a
source_schema_version 1.1
temporal 2000-07-25T00:00:00Z/2004-02-29T23:59:59Z
theme {LBA-ECO,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • biosphere
  • ckan
  • climate-indicators
  • earth-science
  • geo
  • geoss
  • land-surface
  • land-surface-agriculture-indicators
  • national
  • north-america
  • soils
  • united-states
  • vegetation
isopen False
license_id notspecified
license_title License not specified
maintainer undefined
maintainer_email uso@daac.ornl.gov
metadata_created 2025-11-20T04:28:11.011415
metadata_modified 2025-11-20T04:28:11.011419
notes This data set contains biomass estimates for coarse roots measured on the forest floor and measurements of fine root growth down to 2-m depth at the km 67 Rainfall Exclusion Experiment site, Tapajos National Forest, Brazil. The study site was part of a rainfall exclusion experiment that was conducted from 1999-2006 to develop an understanding of the physical processes driving the observed soil water dynamics at the site. All surface roots intersected along three 1000-m long x 1-m wide transects were identified to species, measured, and biomass calculated. The collections were made on January 26, 2001 during the experimental rain exclusion period.The fine root growth was measured from 0.5-m to 2-m depth with a rhizotron. The rhizotron tubes were inserted into deep soil pits in the control and treatment plots. Average root growth measurements are provided by depth interval on a monthly basis from July 25, 2000 to December 14, 2003. DATA QUALITY STATEMENT: The Data Center has determined that there are questions about the quality of the data reported in this data set. The data set has missing or incomplete data, metadata, or other documentation that diminishes the usability of the products. KNOWN PROBLEMS: There are discrepancies with the documentation, collection dates reported and collection method for fine roots utilizing rhizotrons.
num_resources 6
num_tags 15
title LBA-ECO LC-14 Root Biomass and Phenology, km 67 Site, Para, Brazil: 2001