Carbon assessment of Taxodium distichum knees in Mississippi River Alluvial Valley (2004)

Estimates of the biomass of the knees of baldcypress (Taxodium distichum), and oddly shaped, difficult to quantify vegetation components, can be critical to improve estimates of carbon stock in blue carbon assessments. To this end, tree metrics (e.g., density, height, biomass) were examined in 2004 at mixed baldcypress swamps across the Mississippi River Alluvial Valley (MRAV) from Illinois to Louisiana. Biomass of knees was estimated using the point-centered quarter method and volume/mass regressions calculated from measurements of knee height and diameter of the base of knees.

Data and Resources

Field Value
accessLevel public
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identifier USGS:5e29b7e3e4b0a79317cf7d86
metadata_type geospatial
modified 20200830
old-spatial -92.922363277536, 30.334953880891, -87.824707027737, 37.857507154961
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
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spatial {"type": "Polygon", "coordinates": [[[-92.922363277536, 30.334953880891], [-92.922363277536, 37.857507154961], [ -87.824707027737, 37.857507154961], [ -87.824707027737, 30.334953880891], [-92.922363277536, 30.334953880891]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • cache-river-state-natural-area
  • carbon-cycling
  • carbon-sequestration
  • cat-island-national-wildlife-refuge
  • ckan
  • dale-bumpers-white-river-national-wildlife-refuge
  • deer-pond-nature-preserve
  • geo
  • geoss
  • hillside-national-wildlife-refuge
  • lake-isom-national-wildlife-refuge
  • morgan-brake-national-wildlife-refuge
  • national
  • north-america
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  • tensas-national-wildlife-refuge
  • united-states
  • usgs-5e29b7e3e4b0a79317cf7d86
isopen False
license_id notspecified
license_title License not specified
maintainer Beth Middleton
maintainer_email middletonb@usgs.gov
metadata_created 2025-11-20T18:04:23.777353
metadata_modified 2025-11-20T18:04:23.777357
notes Estimates of the biomass of the knees of baldcypress (Taxodium distichum), and oddly shaped, difficult to quantify vegetation components, can be critical to improve estimates of carbon stock in blue carbon assessments. To this end, tree metrics (e.g., density, height, biomass) were examined in 2004 at mixed baldcypress swamps across the Mississippi River Alluvial Valley (MRAV) from Illinois to Louisiana. Biomass of knees was estimated using the point-centered quarter method and volume/mass regressions calculated from measurements of knee height and diameter of the base of knees.
num_resources 2
num_tags 20
title Carbon assessment of Taxodium distichum knees in Mississippi River Alluvial Valley (2004)