Ecology Distribution Management Info Impact Info References and Links Contacts

General Impact P. canariensis need to be properly pruned on a regular occasion to avoid human contact until they reach particular heights. Injuries from the fronds in which fragmented barbs lodge under the skin often require multiple surgical procedures in order to remove all foreign material. Since their introduction, P. canariensis have also become a source of bronchial asthma in a certain individuals, as palm fronds senesce and dry out (Adams et al. 2000; and Blanco et al. 1995). Brusati and DiTamaso (2003) also explain that P. canariensis has been documented displacing native trees and in one instance causing a river to change direction and subsequently flooding a historical site.          Location Specific Impacts: Los Peñasquitos Canyon Preserve (United States (USA))   Human nuisance: Phoenix canariensis grows densely in Los Penasquitos Preserve. P. canariensis has been the focus of several restoration projects there (Brusati and DiTamaso, 2003). San Diego River (United States (USA))   Human nuisance: Phoenix canariensis is DOCumented as a pest on the San Diego River. One adult can produce a carpet of seedlings (Brusati and DiTamaso, 2003). California (United States (USA))   Habitat alteration: At one location in southern California, invasion of Phoenix canariensis caused the river to change direction, flooding an historical site (Brusati and DiTamaso, 2003). Reduction in native biodiversity: Brusati and DiTamaso (2003) report thatP. canariensis displaces native trees.