{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Neal J Pastick (CTR)", "hasEmail": "mailto:neal.pastick.ctr@usgs.gov"}, "description": "Contemporary climate change in Alaska has resulted in amplified rates of press and pulse disturbances that drive ecosystem change with significant consequences for socio-environmental systems. Despite the vulnerability of Arctic and boreal landscapes to change, little has been done to characterize landscape change and associated drivers across northern high-latitude ecosystems. Here we characterize the historical sensitivity of Alaska\u2019s ecosystems to environmental change and anthropogenic disturbances using expert knowledge, remote sensing data, and spatiotemporal analyses and modeling. Time-series analysis of moderate\u2013 and high-resolution imagery was used to characterize land and water-surface dynamics across Alaska. Some 400,000 interpretations of ecological and geomorphological change were made using historical air photos and satellite imagery, and corroborate land surface greening, browning, and wetness/moisture trend parameters derived from peak-growing season Landsat imagery acquired from 1984 to 2015. The time series of change metrics, together with climatic data and maps of landscape characteristics, were incorporated into a modeling framework for mapping and understanding of drivers of change throughout Alaska. According to our analysis, approximately 13% (~174,000\u00b18700 km2) of Alaska has experienced change in the last 32 years (\u00b195% confidence intervals).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/F7DV1J6N", "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.5ab3a343e4b081f61ab5e2f6.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5ab3a343e4b081f61ab5e2f6", "keyword": ["USGS:5ab3a343e4b081f61ab5e2f6", "biota", "change processes", "ecosystem", "erosion", "glacier retreat", "lacustrine dynamics", "timber harvesting", "wildfire"], "modified": "2021-07-01T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-179.99, 50.15, -129.72, 72.2", "theme": ["geospatial"], "title": "Probabilistic estimates of landscape change in Alaska (1984 to 2015)"}