TY - JOUR T1 - Genetic Erosion JF - Native Plants Journal JO - NATIVE PLANTS JOURNAL SP - 112 LP - 122 DO - 10.2979/NPJ.2004.5.2.112 VL - 5 IS - 2 AU - Deborah L Rogers Y1 - 2004/09/21 UR - http://npj.uwpress.org/content/5/2/112.abstract N2 - Genetic considerations pertaining to planting projects usually emphasize locally adapted source material. However, the amount of genetic diversity in the plant materials is important as well. Genetic erosion is the loss of genetic diversity—often magnified or accelerated by human activities. In native plant populations, genetic erosion results from habitat loss and fragmentation, but it also can result from a narrow genetic base in the original collections or by practices that reduce genetic diversity. Although species-specific guidelines are not available, managers can minimize the risk of genetic erosion by being familiar with the biology of the affected species (including breeding system, mode of reproduction, and pattern of genetic diversity). Narrowly based genetic collections should be avoided, providers of plant materials for revegetation projects should offer information on their collection methods, and nursery managers should endeavor to minimize diversity losses at all stages of nursery culture. ER -