來源： Vollmer, 2008; McWilliams, 2004
Arundo donax was introduced into California to serve as a flood control agent in the 1820s and is now highly invasive throughout California watersheds (Vollmer, 2008). A. donax also occurs in oak savanna and chaparral habitats (Dudley et al, 2006). In California, Arundo donax is most commonly associated with waterways with altered hydrologic regimes (e.g., dams) and/or disturbed riparian vegetation, but can also establish in the understory of native riparian vegetation. In southern California it reaches peak abundance downstream along major rivers in coastal basins, and has generally not spread up the steep, narrow canyons that characterize lower montane areas. It establishes primarily on streamside microsites, but can spread beyond the zone occupied by native riparian vegetation, and can occur on dry riverbanks far from permanent water. A study along the San Luis Rey River in San Diego County found the highest concentration of giant reed colonies within 7.3 m of the river (McWilliams, 2004).
The California Exotic Pest Plant Council lists Arundo donax as one of the most invasive pest plants in southern California (Christman, 2003). Team Arundo del Norte is a forum of local, state, and federal organizations dedicated to the control of Arundo donax (giant reed), where it threatens rivers, creeks, and wetlands in Central and Northern California. The organization formed in the summer of 1996. The Team meets several times per year in the Sacramento area to explore opportunities for information exchange and partnerships in support of the ongoing work of eradication of this harmful weed (McWilliams, 2004).
威脅瀕危物種: Arundo donax is known to displace and reduce habitats for native species including the federally endangered Least Bell's Vireo (Vireo bellii)
生態系統變化: Arundo donax dominates riparian zones throughout California reducing and displacing native plants and altering ecosystems (McWilliams, 2004).
最後修改 ： 4/12/2009 11:47:44 a.m.