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The scent of success: Beetle 'smells' can help protect the environment from weeds

Science Spotlights Posted on: August 31, 2020
Saltcedar (Tamarix spp.), an aggressively invasive Eurasian tree, is a dominant and widespread woody riparian species in the southwestern U.S. Biocontrol of saltcedar with the leaf beetle Diorhabda carinulata can be made more effective with semiochemicals (smells). 

Linking wilderness research and management-volume 4. Understanding and managing invasive plants in wilderness and other natural areas: an annotated reading list

Publications Posted on: June 22, 2020
Nonnative invasive plants are altering ecosystems around the world with alarming speed. They outcompete native plants and ultimately change the composition and function of the ecosystems they invade. This poses a particular problem in wilderness and other natural areas that are set aside to maintain natural conditions.

Invasive Species Science Update (No. 12)

Publications Posted on: April 16, 2020
In this issue, we include topics from the importance of biocrusts on invasive versus native plant establishment, effects of dryland restoration on invasive plants, using native seed mixes (rather than nonnative grass mixes) to inhibit cheatgrass invasion after fire, and exploring volatiles of high-elevation pines to better understand resistance to insects and pathogens.

Incorporating a local-statistics-based spatial weight matrix into a spatial regression model to predict the distribution of invasive Rosa multiflora in the Upper Midwest

Publications Posted on: April 02, 2020
In this study, we extended the spatial weight matrix defined by Getis and Aldstadt (2004) to a more general case to map the distribution of Rosa multiflora, an invasive shrub, across the Upper Midwest counties in a spatial lag model (SLM) context.

Post-fire native species seed mixes are effective at keeping out cheatgrass in the Great Basin

Documents and Media Posted on: April 02, 2020
Seeding an area after a fire has long been used to control erosion and suppress problem invasive grasses like cheatgrass. But for managers, choosing the right seed mix to use can be tricky. Document Type: Other Documents

‘Chem herding’ to improve biological control of saltcedar (Tamarix spp.) in the Northern Rockies

Science Spotlights Posted on: August 08, 2019
Saltcedar (Tamarix spp.) refers to the complex of exotic invasive shrubs and trees (four species and their hybrids) now considered the third most prevalent woody riparian taxonomic group in the western United States. Defoliation by large multivoltine populations of the Northern tamarisk beetle Diorhabda carinulata has successfully reduced extensive saltcedar infestations in the southwestern United States. Behavioral manipulation of insects with semiochemicals such as aggregation pheromones can be used to intensify herbivory, even in the Northern Rockies where beetle population densities are inherently low, to the extent that the target weed species is negatively affected at a population level.

Development of remote sensing indicators for mapping episodic die-off of an invasive annual grass (Bromus tectorum) from the Landsat archive

Publications Posted on: September 25, 2017
The exotic annual grass Bromus tectorum (cheatgrass) dominates vast acreages of rangeland in the western USA, leading to increased fire frequency and ecosystem degradation that is often irreversible.

Invasive Species Science Update (No. 8)

Publications Posted on: December 27, 2016
Invasive Species Science Updates are designed to keep managers and other users up-to-date with recently completed and ongoing research by RMRS scientists, as well as highlight breaking news related to invasive species issues.

Invasive Species Science Update (No. 7)

Publications Posted on: December 27, 2016
Invasive Species Science Updates are designed to keep managers and other users up-to-date with recently completed and ongoing research by RMRS scientists, as well as highlight breaking news related to invasive species issues.

Invasive plants — issues, challenges, and discoveries webinar series

Events Posted on: March 15, 2016
The USDA Forest Service Rocky Mountain Research Station hosted a webinar series, Invasive Plants — Issues, Challenges, and Discoveries Webinar Series, to provide attendees with cutting-edge information about invasive plants and their management. This webinar series was sponsored by the Station’s Grassland, Shrubland and Desert Ecosystems Science Program.

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