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.
The most effective way to reverse the buffelgrass invasion and lessen its impacts is to tackle high-risk and high-value areas first, and pool resources to save costs and maximize control efforts across mixed jurisdictions.
African buffelgrass is spreading rapidly in the Sonoran Desert of southern Arizona, creating novel fire risks in both natural and urban areas and threatening conservation efforts.
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.
A decision-support model that simulates buffelgrass spread and treatment effectiveness was developed by the Southern Arizona Buffelgrass Coordination Center, ESSA Technologies, and the USGS Invasive Species Program.
USGS invasive species science, such as this tamarisk research, provides critical information for society on the economic and ecological price of controlling invasive species.
The wide expanses of golden annual grasslands seen in many Arizona and Nevada desert landscapes today are unnatural — the result of massive swaths of invasive, non-native brome grasses.