Delta-X: Foliar Stable Isotopes, MRD, LA, USA, 2021

This dataset contains foliar tissue C and N bulk isotopic signatures (delta 13C, delta 15N) of dominant wetland herbaceous species collected at six sites in the Atchafalaya (N = 3) and Terrebonne (N = 3) basins in coastal Louisiana. Five of the sites are from the Coastwide Reference Monitoring System (CRMS) and one site is the Mike Island Site in the Wax Lake Delta (WLD). For the herbaceous wetland sites, Aboveground biomass (AGB) was harvested inside duplicate plots (0.25 m2), located 5 m apart at each sampling station. All plant material within each plot was clipped at soil level, stored in plastic bags, and transported to the laboratory for further analyses. In the lab, plant tissue (foliar) C and N bulk isotopic signatures were analyzed for two dominant plant species from each site using a Thermo Scientific Delta V Plus CF-IRMS coupled to a Carlo-Erba 1108 elemental analyzer via a ConFlo IV interface (Thermo Fisher Scientific, Waltham, MA, USA). The data were collected during 2021-08-19 to 2021-08-27 during the Delta-X Fall 2021 deployment.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated August 25, 2026, 09:20 (UTC)
Created April 1, 2025, 15:23 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id ebd64438-0029-43a9-8c6b-c19099250cae
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2194
license https://www.usa.gov/government-works
modified 2026-08-17T22:16:01Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 0aac11eb699eec781c756946f4e9e62b8bbd2e7ab66ddc835d573c0f8695613b
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -91.8852, "NorthBoundingCoordinate": 29.5102, "EastBoundingCoordinate": -90.8219, "SouthBoundingCoordinate": 29.1714}]]
temporal 2021-08-19/2021-08-27
theme {"Earth Science"}