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Keyword: sagebrush steppe

Mortality and flowering of Great Basin perennial forbs after experimental burning: Implications for wild bees

Publications Posted on: April 09, 2019
The fates of native bee communities in the Great Basin sagebrush steppe are linked with the susceptibilities of their floral hosts to increasingly frequent wildfires. Postfire survival and subsequent flowering of six prevalent perennial wildflowers representing five families were quantified across a range of realistic fire severities created using a calibrated propane burn barrel.

Understanding mountain big sagebrush seed production variability

Science Spotlights Posted on: November 15, 2017
Historically, the sagebrush biome was the most widespread non-forest vegetation type in temperate North America. Compared with historic conditions, current sagebrush ecosystems are reduced in extent, fragmented, degraded, and face multiple threats (Welch 2005), including altered fire regimes (USDI 2015).

Seed production estimation for mountain big sagebrush (Artemisia tridentata ssp. vaseyana)

Publications Posted on: September 25, 2017
Seed production is an essential component of postdisturbance recovery for mountain big sagebrush (Artemisia tridentata Nutt. ssp vaseyana [Rydb] Beetle; MBS). We tested a method for rapid estimation of MBS seed production using measurements of inflorescence morphology.

Nesting pair density and abundance of ferruginous hawks (Buteo regalis) and golden eagles (Aquila chrysaetos) from aerial surveys in Wyoming

Publications Posted on: December 16, 2015
Raptors that inhabit sagebrush steppe and grassland ecosystems in the western United States may be threatened by continued loss and modification of their habitat due to energy development, conversion to agriculture, and human encroachment. Actions to protect these species are hampered by a lack of reliable data on such basic information as population size and density.

Irrigation to enhance native seed production for Great Basin restoration

Publications Posted on: October 07, 2015
Native shrublands and their associated grasses and forbs have been disappearing from the Great Basin as a result of grazing practices, exotic weed invasions, altered fire regimes, climate change and other human impacts. Native forb seed is needed to restore these areas.

Data product for "Effects of water and nitrogen availability on nitrogen contribution by the legume, Lupinus argenteus Pursh"

Datasets Posted on: August 27, 2015
We conducted a greenhouse experiment to examine the separate and interacting effects of water and nitrogen (N) availability on biomass production, tissue N concentration, nodulation, nodule activity, and rhizodeposition of Lupinus argenteus (Pursh), a legume native to sagebrush steppe. Plants were grown in a replicated, randomized block design with three levels of water and four levels of N.

Data product for "Nitrogen level and legume presence affect competitive interactions between a native and invasive grass"

Datasets Posted on: August 27, 2015
We conducted a greenhouse experiment to investigate effects of the native N2-fixing legume, L. argenteus, on competitive interactions between seedlings of the non-native annual grass, B.tectorum, and a native perennial grass, E. multisetus, over a gradient of nitrogen (N) availability.

Vegetation heterogeneity within and among prairie dog colonies on northern Great Plains grasslands

Projects Posted on: April 22, 2015
Areas inhabited by black-tailed prairie dogs are subject to continuous and intense disturbance by grazing and burrowing that directly and indirectly alter vegetation composition and structure compared to the surrounding uninhabited areas. The objective of this study is to evaluate patterns of vegetation heterogeneity within and among prairie dog colonies in the grasslands of the Northern Great Plains.

Seeding techniques for restoring sagebrush ecosystems following wildfire

Science Spotlights Posted on: April 16, 2015
Sagebrush ecosystems of the Great Basin are rapidly being converted to annual grasslands dominated by invasive weeds such as cheatgrass (Bromus tectorum L.) which thrives following wildfire and competes with native plants. Restoring diverse plant communities containing perennial grasses, shrubs and forbs is an important priority in this region. Scientists in Boise have partnered with public and private agencies to evaluate the effectiveness of seeding techniques designed to re-establish native plants following fire.

Plant establishment and soil microenvironments in Utah juniper masticated woodlands

Publications Posted on: September 19, 2013
Juniper (Juniperus spp.) encroachment into sagebrush (Artemisia spp.) and bunchgrass communities has reduced understory plant cover and allowed juniper trees to dominate millions of hectares of semiarid rangelands. Trees are mechanically masticated or shredded to decrease wildfire potential and increase desirable understory plant cover.