Forest and Rangeland Ecosystem Science Center

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Date published: April 9, 2021

A Chemical and Bio-Herbicide Mixture Increased Exotic Invaders, Both Targeted and Non-Targeted, Across a Diversely Invaded Landscape After Fire

Herbicides sprayed to inhibit exotic annual grass germination and establishment can have unintended effects, including the release of secondary invaders or damage to native plant species.

Date published: April 9, 2021

Weather Affects Post-Fire Recovery of Sagebrush-Steppe Communities and Model Transferability Among Sites

Altered climate, including weather extremes, can affect vegetative recovery after disturbances. USGS researchers compared models to determine how annual and perennial grass cover and sagebrush density responded to wildfire and weather.

Date published: April 9, 2021

Surface-Air Mercury Fluxes and a Watershed Mass Balance in Forested and Harvested Catchments

Forest soils can act as repositories for atmospherically deposited mercury, yet forestry practices can influence mercury mobility and fluxes, food web dynamics, and bioaccumulation processes.

Date published: April 8, 2021

Shade, Light, and Stream Temperature Responses to Riparian Thinning

Resource managers are interested in understanding whether thinning trees in riparian forests could help existing trees grow larger, eventually providing a source of large woody debris, promoting riparian zone heterogeneity, and enhancing riparian biodiversity.

Date published: April 8, 2021

Post-fire Management may have Inadvertently Released an Exotic Perennial Forb and Suppressed its Biocontrol Agents

Invasive plants that establish in sagebrush steppe ecosystems during the critical post-fire recolonization period can affect long-term vegetation community trajectories.

Date published: April 8, 2021

Wildlife Mortality from Wind Turbines Scales with Energy Production

Older wind facilities are being “repowered,” which involves replacing smaller, closely spaced turbines with larger ones, more widely spaced.

Date published: March 31, 2021

New USGS Analysis of Wind Turbine Upgrades Shows No Impact on Wildlife Mortality

CORVALLIS, ORE. – Reduction in wildlife mortality rates is sometimes cited as a potential benefit to the replacement of older, smaller turbines by larger, next generation turbines. In contrast, others have expressed concern that newer, larger turbines may actually increase bird and bat deaths.

Date published: March 26, 2021

Fish Habitat Use and Food Web Structure Following Pond-and-Plug Meadow Restoration

The ‘‘pond-and-plug’’ meadow-restoration technique, in which ponds are formed by excavating the floodplain and plugging incised channels with the excavated material, is commonly used in montane meadows in the Sierra Nevada. 

Date published: March 26, 2021

Weather and Distance to Fire Refugia Limit Landscape-Level Occurrence of Fungal Disease in an Exotic Annual Grass

Exotic species invasion may occur because of the lack of natural enemies, such as pathogens, in introduced ranges. 

Date published: March 19, 2021

Rock Gnome Lichen Monitoring Assessment

Rock gnome lichen is endemic to the southern Appalachian Mountains at high elevations or in humid, deep river gorges.

Date published: March 19, 2021

A Roadmap for Sampling and Scaling Biological Nitrogen Fixation

Biological nitrogen fixation is a large source of nitrogen to soils and watersheds, and fuels carbon uptake in terrestrial ecosystems worldwide.