{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Ellis Q Margolis", "hasEmail": "mailto:emargolis@usgs.gov"}, "description": "The data include ages and locations of presence/absence surveys for sagebrush (Artemesia tridentata) on the Bureau of Land Management Rio Grande del Norte National Monument, New Mexico. We sampled cross-sections of sagebrush along 11 General Land Office section survey lines and conducted growth ring analysis to produce inner-ring dates for 93 sagebrush plants. The presence/absence surveys were conducted along the same section lines as the growth ring samples and were compared to the original surveys from 1881 to assess vegetation change on the landscape.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9E3C8C6", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6464e971d34ec179a83daa34.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_6464e971d34ec179a83daa34", "keyword": ["Artemisia tridentata", "New Mexico", "Rio Grande del Norte National Monument", "Taos", "USGS:6464e971d34ec179a83daa34", "biota", "dendrochronology", "sagebrush", "tree ring analysis", "vegetation"], "modified": "2025-08-26T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-105.9659, 36.6001, -105.6116, 36.9872", "theme": ["geospatial"], "title": "Sagebrush ages and presence/absence locations in Rio Grande del Norte National Monument, New Mexico"}