Untitled Document
Bromus REE NET: The Bromus Database

logo for the Cooperative State Research, Education, and Extension Service

The goal of the Bromus Research, Education, and Extension (REE NET) project is to foster communication among the many Bromus specialists in the western US, ultimately leading to ideas for transformative research and extension on understanding and controlling exotic Bromus in semiarid rangelands. The Bromus REE NET project is unified by a theme of resistance (i.e. the ability to remain uninvaded) and resilience (i.e. the ability to return to a previous state after invasion) of agroecosystems to exotic and invasive Bromus species. This project is funded for 4 years by the United States Department of Agriculture National Institute of Food and Agriculture (formerly CSREES - the Cooperative State Research, Education, and Extension Service).

Read the Bromus REE NET Project Narrative.


  • Collate and synthesize existing distributional, ecological, biological, and management information on invasive Bromus species in the western US. Topics such as ecological amplitudes, genetic variability, history of invasion, succession, interactions with ecosystem services, effects of livestock grazing, and effectiveness of control and management techniques will be addressed.
  • Compare and contrast these variables among species and regions, identify data gaps and assumptions requiring testing, and address transferability of information and management recommendations among species and regions.
  • Assess potential responses of Bromus to climate change with the overarching question of how changes in resistance and resilience of native communities and changes in the invasiveness of Bromus will lead to changes in ecological impacts, distribution, and control of Bromus.
  • Extend findings to scientific and management communities through publications and meetings to advance understanding of processes and mechanisms underlying observed patterns, and to inform management decisions and priorities.

Cheatgrass Die-off

Cheatgrass (Bromus tectorum) die-off has occurred in many, relatively large, areas throughout the Great Basin. Issues associated with this die-off include: soil erosion; invasion by other weeds like burr buttercup ( Ranunculus testiculatus ) and knapweeds ( Centauria spp ); and a further decline in ecosystem services including air and water quality, wildlife habitat, and livestock forage.

Read more about cheatgrass die-off.

Handout from Great Basin Science Delivery Project field trip to cheatgrass die-off sites neat Orovada, Nevada.