Exotic Tamarisk Management – commonly known as salt cedar, is an tropical (non-native) shrub or tree that stretches in thick-witted stands along creeks and series in the west. Tamarisk, introduced to the U.S. in the 19 th century as an eroding self-restraint negotiator, spread through the west and compelled major changes to natural environments. Tamarisk reached the Grand Canyon area during the late 1920 s and early 1930 s, becoming a prevailing riparian area genus along the Colorado River in 1963 (following completion of Glen Canyon Dam).
The wallops caused by tamarisk in the southwest are well documented. These prolific non-native shrubs dismiss native vegetation and animals, adjust clay salinity, and increase fire frequency. Salt cedar is an vigorous adversary, often developing monoculture stands and lowering water tables, who are capable of negatively affect wildlife and native vegetative communities. In many areas, it fills previously open spaces and to accommodate a wide range of environmental conditions. Formerly established in an area, it frequently spreads and persists.
Through a public discus process, called an Environmental Assessment/Assessment of Effect, park handling assessed potential impacts to natural, cultural and wilderness riches, and solicited public comments. Through this process the environmentally well-liked alternative was adopted, and includes the insure of tamarisk in side valleys, tributaries, developed areas, and outpourings above the pre-dam groundwater level of the Colorado River within Grand Canyon National park.
Crews remove tamarisk through a combination of mechanical and substance restricts, may be required for native vegetation to recover. The length of the bush usually dictates how it is removed. Approaches include pulling, trimming to stump stage, or girdling it to leave the dead tree standing for the habitats. The combination of handwriting tools and herbicide ensures maximum effectiveness with minimum impact to visitors and the environmental issues. The particular programme employed is specific to each site and determined by the restoration biologist or on-site job commander.