Forest and Rangeland Ecosystem Science Center

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Filter Total Items: 268
Date published: June 1, 2021

Establishment and Survival of Subalpine Fir Seedlings in Olympic National Park Meadows

Tree establishment in subalpine meadows is a multistep process, from cone production through adult survival, and a potential indicator of ecological effects of climate change.

Date published: May 13, 2021

Differential Reliance on Aquatic Prey Influences Mercury Exposure in Riparian Arachnids and Songbirds

Aquatic insects are an important prey source for birds and other insects, but may also move aquatic contaminants, such as mercury, to riparian food webs.

Date published: May 13, 2021

Enigmatic Extinction in a Boreal Toad Population in Northwestern Montana

The amphibian chytrid fungus Batrachochytrium dendrobatidis has been implicated in boreal toad declines, although its overall effect on population dynamics is complicated by interactions with changing habitat conditions, population isolation, and other environmental stressors.

Date published: April 23, 2021

Yearly Temperature Fluctuations and Survey Speed Influence Road Counts of Wintering Raptors

Researchers examined data from 2,155 road surveys of raptors conducted from 2001–2018 by community scientists while participating in the Pennsylvania Winter Raptor Survey.

Date published: April 23, 2021

Sagebrush Recovery Patterns after Fuel Treatments Affected by Disturbance Type and Plant Functional Group Interactions

Researchers evaluated 10-year effects of fuel treatments on sagebrush recruitment and plant functional group interactions using Sagebrush Treatment Evaluation Project (SageSTEP) data.

Date published: April 23, 2021

Fire Frequency Impacts Soil Properties and Processes in Sagebrush Steppe Ecosystems of the Columbia Basin

There is uncertainty about the magnitude of change semi-arid soils experience as they are exposed to more fires.

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.