Retraction of “Environmental Attributes Correlating with Density of Blackbrush (Coleogyne ramosissima) Shrubs in the Spring Mountains of Southern Nevada” (2003) and “Soil Compaction from Human Trampling, Biking, and off-Road Motor Vehicle Activity in a Blackbrush (Coleogyne ramosissima) Shrubland” (2004)

Abstract

LEI, S. 2003. Environmental attributes correlating with density of blackbrush (Coleogyne ramosissima) shrubs in the Spring Mountains of southern Nevada. Western North American Naturalist 63:391–399.LEI, S. 2004. Soil compaction from human trampling, biking, and off-road motor vehicle activity in a blackbrush (Coleogyne ramosissima) shrubland. Western North American Naturalist 63:125–130.