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Dean Roosa has served as °ÄÖÞÐÒÔË10¿ª½±â€™s state ecologist, board member for the °ÄÖÞÐÒÔË10¿ª½± Chapter of the Nature Conservancy and the Natural Areas Association, chair of the °ÄÖÞÐÒÔË10¿ª½± Natural History Association, and president of the °ÄÖÞÐÒÔË10¿ª½± Ornithologists’ Union. He is the coauthor of Wildflowers of the Tallgrass Prairie and The Vascular Plants of °ÄÖÞÐÒÔË10¿ª½± (°ÄÖÞÐÒÔË10¿ª½±, 1994).