Fig. 3
From: Origin of sandy substrates controlling the distribution of open vegetation ecosystems in Amazonia
(a) Sampling sites for OSL dating of sandy substrates of WSE and savannas in central and eastern Amazonia; (b) WSE patches in central Amazonia and sampling sites, (c) savanna patches on eastern Amazonia and sampling sites. This map was created with ArcMap 10.8 software (https://www.esri.com/en-us/arcgis/products/arcgis-desktop/resources). Data sources: digital elevation data - USGS EROS Archive Shuttle Radar Topography Mission (SRTM) Void Filled resampled to 250 m resolution; rivers - CPRM (https://geosgb.sgb.gov.br/); savannas and WSE - courtesy of Alberto Vicentini and INPA GIS Lab, M. Alencar and A. Carneiro, and IBGE hydromorphic spodosols (https://www.ibge.gov.br/geociencias/informacoes-ambientais/pedologia/10871-pedologia.html?=&t=downloads).
