Caption: Mutlu Ozdogan, assistant professor of forest and wildlife ecology at the University of Wisconsin–Madison, processes images from the Landsat satellite to reveal changes in forest composition over time. Pictured in this composite is the dry pine-barren forest of Bayfield and Douglas counties in northwestern Wisconsin in 1989 (left) and 1995 (center). Vegetation appears green in these true-color images. A computer algorithm compared the 1989 and 1995 images and identified yellow areas in the right panel as having been harvested in the interim.
Photo: courtesy Mutlu Ozdogan
High-res 300 dpi version