Invasive Species

As public, tribal, and military lands continue to experience rapid change brought on by fire, invasive species, and drought, there is a growing need for science-management partnerships to apply innovative research and technologies to support decision-making at an accelerated pace.

Land and resource managers are increasingly aware of the contribution of biocrusts to ecological functions and have expressed interest in training and resources to recognize biocrusts in the field. This knowledge will help enable managers to address biocrusts in carrying out analyses under the National Environmental Policy Act (NEPA). WERC scientists have drafted a single page, easy guide to...

Land and resource managers are increasingly interested in up-to-date information for biocrust conservation and management. To facilitate the use of evolving science by land managers, WERC scientists are compiling a synthesis of recent work on biocrusts related to their ecology and management. This knowledge will help enable managers to address biocrusts in carrying out analyses under the National...

This interdisciplinary project combines expert judgment on treatment costs with spatially explicit ecological modeling to estimate the financial resources needed to address the threat of invasive annual grass across the entire sagebrush biome. Results of the assessment will provide economic insights that can inform cost-effective resource allocation to efficiently achieve sagebrush conservation...

The USGS Southwest Biological Science Center is coordinating the Southwest Fire Innovation Landscape Network to prepare fire and natural resource managers for rapidly changing fire landscapes by conducting research and building science-management partnerships. The network develops advanced tools and technologies to assess fuel loads and the effectiveness of fuel treatments, understand wildfire...

Through a collaborative effort with multiple state and federal agencies, university researchers, and individual stakeholders, we are producing a set of predictive seasonal habitat maps for greater sage-grouse ( Centrocercus urophasianus) spanning the entirety of the species’ U.S. distribution. This is the largest habitat modeling effort of its kind for the species and uses a large, compiled...

Invasive annual grasses can replace native vegetation and alter fire behavior, impacting a range of habitats and species. A team of researchers from the U.S. Geological Survey, Colorado State University, the Bureau of Land Management, and the U.S. Fish and Wildlife Service are working to identify factors that influence changes in the distribution and abundance of invasive annual grasses (IAGs)...

USGS is investigating the impact of the annual grass-fire cycle-- and restoration land treatments aimed at slowing that cycle-- on carbon storage in dryland soils.

Within areas of overlapping sagebrush and pinyon-juniper ecosystems, wildlife populations are declining due to habitat fragmentation and degradation, changing environments, and human development. However, management to bolster species associated with one ecosystem may result in negative consequences for species associated with the other. Thus, land managers are challenged with balancing which...

Biological soil crusts (biocrusts) are a community of living organisms, like moss, lichen, and algae, covering soils in arid and semi-arid ecosystems, providing important ecological functions like carbon cycling and soil stabilization. Analyses show that biocrusts are negatively associated with the abundance of invasive annual grasses that are responsible for increasing fire across the Great Basin...

Climate change-induced warming can alter plant phenology and disrupt ecosystems like the sagebrush steppe in western North America. The invasive annual grass cheatgrass can thrive under these altered conditions, exacerbating wildfires and threatening wildlife habitat, carbon storage, and other important ecosystem services. We are studying how different densities of cheatgrass respond to increased...

This project analyzes on-the-ground plant monitoring data across sagebrush and rangeland ecosystems to examine how fire, climate, topography, and plant communities influence the success of invasive annual grasses after fires.