Vegetation surveys Plant conservation Rare plants Conservation Plant communities Astragalus (Plants) Conservation Willows Conservation Eriophorum Conservation Grasslands Prairie ecology Prairies Rare plants Shrubland ecology Arizona willow Conservation Astragalus (Plants) Birds Effect of habitat modification on Botany Cliffs Conservation Climatic changes Draba Conservation Ecological integrity Endangered plants Identification Frankenia Conservation Grasslands Management Great Sand Dunes National Park and Preserve (Colo.) Gunnison National Forest (Colo.) Invasive plants Control Junipers Kobresia Conservation Lesquerella Lesser prairie chicken Effect of habitat modification on