ABoVE: Alder Shrub Cover and Soil Properties, Alaska, 2019, V2

This dataset holds measures of vegetative cover and soil characteristics for sites in interior Alaska, U.S., along the James W. Dalton Highway (Alaska Route 11). The field data were collected during August in 2018 and 2019 to study the expansion of shrub cover, particularly alders (Alnus spp.) in tundra ecosystems and the potential impact of shrubs on soil properties. Samples were measured along transects at 5- to 10-m intervals. Soil samples were collected and analyzed in the laboratory. Vegetation variables include percent cover of mosses, lichens, graminoid species, shrubs, alder, birch (Betula spp.), and willow (Salix spp.) along with the biomass, size, and age structure of alder. An allometric model to estimate alder biomass was developed. Soil metrics include moisture content, conductivity, bulk density, carbon and nitrogen content and isotope ratios. The data include the maximum annual Normalized Difference Vegetation Index (NDVI) for 2019 and the trend in maximum NDVI for 2000-2020. This is version 2 of this dataset.The data are provided in comma-separated values (CSV) format.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated August 18, 2026, 02:09 (UTC)
Created April 1, 2025, 14:05 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id d7465d8f-f47a-4d63-878c-ab203ce6569e
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2300
license https://www.usa.gov/government-works
modified 2026-08-10T22:16:02Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 95c1faacfe41d9bffa3f3c2644439b6e031dc265f72950648494aca526b52272
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -150.714, "NorthBoundingCoordinate": 68.0185, "EastBoundingCoordinate": -149.708, "SouthBoundingCoordinate": 66.3401}]]
temporal 2018-08-14/2019-08-28
theme {"Earth Science"}