Tamarisk is now declining in abundance in some parts of its range in the West because of the release and spread of a biological control agent, a defoliating beetle.
Tamarisk is a familiar invasive species across the American West, occupying hundreds of thousands of acres of river floodplains since the 1960s. This shrub or small tree, which is also known as saltcedar, has successfully colonized a range of sites.
USGS invasive species science, such as this tamarisk research, provides critical information for society on the economic and ecological price of controlling invasive species.