all of these images are rendered with Vue with varying degrees of post work in photoshop.
they are all the exact same terrain with the exact same textures, just rendered with different atmospheres and lighting. some are rendered with ambient occlusion, some are rendered with global radiosity
the plant life images at the end are the same terrain with added ecosystems. they were rendered with global radiosity (similar to final gather) with little photoshop work done, so they are closer to what would appear straight out of the vue native render
(hour and a half render time at 800x600 resolution)