Pre-Delta-X: Vegetation Species, Structure, Aboveground Biomass, MRD, LA, USA, 2015

Description

This dataset provides vegetation species, height, stem density and diameter, and species aboveground biomass (AGB) measurements collected at herbaceous and forested wetland sites across the Atchafalaya and Terrebonne basins within the Mississippi River Delta (MRD) floodplain in coastal Louisiana, USA. The measurements were made during the Pre-Delta-X campaign in Spring 2015 and Fall 2015. Vegetation height and density and diameter data are only provided for forested Atchafalaya sites during the spring collections. At the nine herbaceous wetland sites, a transect was established perpendicular to the wetland edge with replicate sample plots (0.25 m2, 5 m apart) located at 50, 100, and 150 m from the wetland edge to capture the range of vegetation structure, zonation, and composition. AGB was harvested inside the duplicate plots at each sampling location. At the six forested wetland sites, duplicate circular plots (10 m radius, 50 m apart) were established inside the forest approximately 30 m from the wetland edge. All trees with a diameter at breast height (DBH at 1.3 m) > 2.5 cm were measured within each plot and identified to species. The height of trees was measured with a laser range finder. AGB was estimated using species-specific allometric equations. Measurements were used to generate marsh and forested wetland coverage and biomass in response to seasonality within both basins. The data will be used to calibrate remote sensing data (e.g., UAVSAR, AVIRIS-NG) and hydrodynamics and sediment transport models.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1805
34 Site location map and vegetation representative in the areas. A) An example of Spartina which is common throughout the wetland. B) An example of the dense cover and heterogeneity of the herbaceous marsh. C) An example of floating vegetation at the study site Source: Thomas et al., 2019 https://daac.ornl.gov/DELTAX/guides/PreDeltaX_Vegetation_Structure_Fig1.png
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/daacdata/deltax/PreDeltaX_Vegetation_Structure/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/DELTAX/guides/PreDeltaX_Vegetation_Structure.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1805
21 Delta-X Project Site https://deltax.jpl.nasa.gov/
33 Pre-Delta-X: Vegetation Species, Structure, Aboveground Biomass, MRD, LA, USA, 2015: PreDeltaX_Vegetation_Structure.pdf https://data.ornldaac.earthdata.nasa.gov/public/deltax/PreDeltaX_Vegetation_Structure/comp/PreDeltaX_Vegetation_Structure.pdf

Tags

  • ecosystems
  • land-surface
  • biosphere
  • vegetation
  • geomorphic-landforms-processes
  • earth-science

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