{"action":"update","ckan_id":null,"date_created":"Wed, 01 Apr 2026 22:05:12 GMT","date_finished":"Wed, 01 Apr 2026 22:05:12 GMT","harvest_job_id":"0e7d7efb-db7c-448d-8a09-a0d38a393e27","harvest_source_id":"600bb802-dd28-4e5a-ba57-e295fbb042c2","id":"3c02beb3-9618-4af4-a5e1-05f9254455ba","identifier":"10.15482/USDA.ADC/31236091.v1","parent_identifier":null,"source_hash":"8a628a15e85f3e5f6a614cd5459ad1244485af572abf565e5965fdd90187e1c9","source_raw":"{\"@type\": \"dcat:Dataset\", \"accessLevel\": \"public\", \"accrualPeriodicity\": \"irregular\", \"bureauCode\": [\"005:18\"], \"contactPoint\": {\"fn\": \"Halvorson, Jonathan J.\", \"hasEmail\": \"mailto:jonathan.halvorson@usda.gov\"}, \"description\": \"<p dir=\\\"ltr\\\">Abiotic efflux of CO<sub>2</sub> from soil is typically attributed to weathering of carbonates but also may be from basic biological and chemical processes in the soil such as concurrent oxidation of organic matter and reduction of metal oxides. However, little is known about how such reactions vary due to differences in the soil environment . An experiment was conducted to measure CO<sub>2</sub> emissions formed during 4-h incubations of soil from different management systems (n = 5), archived benchmark soils from sites across the U.S. (n = 18), and samples of reagent-grade metal oxides (n = 4). Treatments included water, pH 4 phthalate buffer, glucose (0.029 M), or gallic acid (0.025 M). Gallic acid is a simple phenolic constituent of root exudates found in the soil that can result in redox reactions producing CO<sub>2</sub>. Data may be used to understand processes contributing to abiotic sources of CO<sub>2</sub> from agricultural land.</p>\", \"distribution\": [{\"@type\": \"dcat:Distribution\", \"downloadURL\": \"https://ndownloader.figshare.com/files/61703962\", \"format\": \"csv\", \"mediaType\": \"text/csv\", \"title\": \"GA_CO2_BenchmarckComposite.csv\"}, {\"@type\": \"dcat:Distribution\", \"downloadURL\": \"https://ndownloader.figshare.com/files/61703965\", \"format\": \"csv\", \"mediaType\": \"text/csv\", \"title\": \"GA_CO2_BenchmarckSummary.csv\"}, {\"@type\": \"dcat:Distribution\", \"downloadURL\": \"https://ndownloader.figshare.com/files/61703968\", \"format\": \"csv\", \"mediaType\": \"text/csv\", \"title\": \"GA_CO2_data dictionary.csv\"}, {\"@type\": \"dcat:Distribution\", \"downloadURL\": \"https://ndownloader.figshare.com/files/61703971\", \"format\": \"xlsx\", \"mediaType\": \"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet\", \"title\": \"GA_CO2_composite.xlsx\"}], \"identifier\": \"10.15482/USDA.ADC/31236091.v1\", \"keyword\": [\"Carbon dioxide\", \"environment\", \"gallic acid\", \"glucose\", \"organic matter\", \"oxidation\", \"pH\", \"pastures\", \"phthalates\", \"soil\"], \"license\": \"https://creativecommons.org/publicdomain/zero/1.0/\", \"modified\": \"2026-03-24\", \"programCode\": [\"005:040\"], \"publisher\": {\"@type\": \"org:Organization\", \"name\": \"Agricultural Research Service\"}, \"spatial\": \"{\\\"type\\\": \\\"MultiPoint\\\", \\\"coordinates\\\": [[-100.91535, 46.76971900000001], [-98.99091400000002, 46.93913900000001], [-68.672292, 44.88320600000003], [-81.25188300000002, 35.684061], [-93.662325, 42.41408100000001], [-87.893397, 37.14395300000001], [-105.09855299999998, 40.640041999999994], [-81.418761, 36.870427999999976], [-98.124981, 30.209999999999994], [-158.03277499999996, 21.41000299999999], [-86.499656, 40.01037199999999], [-111.666072, 32.056611000000004], [-102.06209400000002, 35.18163300000002], [-79.756092, 33.96978300000001], [-96.385672, 40.875710999999995], [-99.99122499999999, 42.505281], [-157.986178, 21.438150000000007], [-118.776161, 45], [-121.901794, 38.764752999999985]]}\", \"temporal\": \"2021-12-10/2022-05-13\", \"title\": \"Data from: Rapid formation of abiotic CO2 after adding phenolic gallic acid, to agricultural soils\"}","source_transform":null,"status":"success"}