Search results for: Kirk W. Davies

Items from 1 to 20 out of 63 results

article

Ecological restoration in the age of apocalypse

Lauren N. Svejcar, Kirk W. Davies, Alison L. Ritchie

Global Change Biology > 29 > 17 > 4706 - 4710

Billions of dollars are spent annually on ecological restoration efforts around the world and yet successful attainment of restoration targets still falls short in many regions. Globally, ecosystem restoration is becoming increasingly challenged with changes in climate. Years with extreme climatic events that limit plant establishment, such as severe drought, heatwaves, and floods are projected to...

article

Native lagomorphs prolong legacy effects limiting restoration of imperiled shrub‐steppe communities

Kirk W. Davies, Jon D. Bates, Lauren Svejcar

Restoration Ecology > 31 > 4 > n/a - n/a

Over the last +150 years, increases in woody vegetation in drylands and associated declines in herbaceous vegetation have led to widespread interest in reversing this trend. However, the effects of native, noncharismatic herbivores, such as lagomorphs, on these efforts are largely unknown. For 11 years post‐treatment, we quantified the effects of native lagomorphs on restoration efforts in sagebrush...

article

Variable effects of long‐term livestock grazing across the western United States suggest diverse approaches are needed to meet global change challenges

Stella M. Copeland, David L. Hoover, David J. Augustine, Jonathan D. Bates, more

Applied Vegetation Science > 26 > 1 > n/a - n/a

Aims Livestock production is the most widespread land use globally and occurs across a diverse set of ecosystems. Variability in long‐term livestock grazing impacts across ecosystems is poorly characterized, particularly at larger spatial scales, despite strong relationships with various ecosystem services related to soil fertility and stabilization and vegetation productivity. Here we examine the...

article

A new perspective and approach to ecosystem restoration: a seed enhancement technology guide and case study

Lauren N. Svejcar, Vanessa S. Brown, Alison L. Ritchie, Kirk W. Davies, more

Restoration Ecology > 30 > 7 > n/a - n/a

Restoration efforts in dryland systems are often limited by a complex range of environmental variables and chronically low establishment of seeded native species. Methods for restoring large tracts of degraded drylands in the western United States and southwestern Australia have not advanced substantially since the early 1900s despite continuous efforts to improve success. Historic agricultural practices...

article

The elevational ascent and spread of exotic annual grass dominance in the Great Basin, USA

Joseph T. Smith, Brady W. Allred, Chad S. Boyd, Kirk W. Davies, more

Diversity and Distributions > 28 > 1 > 83 - 96

Aim In the western United States, sagebrush (Artemisia spp.) and salt desert shrublands are rapidly transitioning to communities dominated by exotic annual grasses, a novel and self‐reinforcing state that threatens the economic sustainability and conservation value of rangelands. Climate change is predicted to favour annual grasses, potentially pushing transitions to annual grass dominance into higher...

article

Seeding locally sourced native compared to introduced bunchgrasses post‐wildfire in frigid Wyoming big sagebrush communities

Kirk W. Davies, Chad S. Boyd

Restoration Ecology > 29 > 5 > n/a - n/a

Perennial grasses are often seeded after disturbances to provide ecosystem services and prevent invasive plant dominance. However, there is widespread disagreement over the use of native compared to introduced grasses. In Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & A. Young) communities, introduced wheatgrasses are often seeded after wildfires because they are...

article

Herbicide protection pod technology for native plant restoration: one size may not fit all

Owen W. Baughman, Jessica Griffen, Jay Kerby, Kirk W. Davies, more

Restoration Ecology > 29 > 3 > n/a - n/a

Pre‐emergent herbicides are frequently used to control exotic annual plants prior to seed‐based restoration, but seeding must generally wait until herbicide toxicity has waned. The emerging seed‐enhancement technology of herbicide protection pods (HPP) allows for simultaneous seeding and herbicide application by protecting desirable seeds inside pods or pellets containing activated carbon, allowing...

article

Improving restoration success through a precision restoration framework

Stella M. Copeland, Owen W. Baughman, Chad S. Boyd, Kirk W. Davies, more

Restoration Ecology > 29 > 2 > n/a - n/a

Dryland ecosystems represent a significant portion of global land area, support billions of people, and suffer high rates of land degradation. Successfully restoring native vegetation to degraded drylands is a global priority and major challenge—highlighting the need for more efficient and successful restoration strategies. We introduce the concept of “precision restoration,” which targets critical...

article

Improving restoration success through microsite selection: an example with planting sagebrush seedlings after wildfire

Kirk W. Davies, Jon D. Bates, Danielle Clenet

Restoration Ecology > 28 > 4 > 859 - 868

Post‐fire restoration of foundation plant species, particularly non‐sprouting shrubs, is critically needed in arid and semi‐arid rangeland, but is hampered by low success. Expensive and labor‐intensive methods, including planting seedlings, can improve restoration success. Prioritizing where these more intensive methods are applied may improve restoration efficiency. Shrubs in arid and semi‐arid environments...

article

Are Sage‐Grouse Fine‐Scale Specialists or Shrub‐Steppe Generalists?

Joseph T. Smith, Brady W. Allred, Chad S. Boyd, John C. Carlson, more

The Journal of Wildlife Management > 84 > 4 > 759 - 774

Sage‐grouse (Centrocercus spp.) are influencing rapidly evolving land management policy in the western United States. Management objectives for fine‐scale vegetation characteristics (e.g., grass height >18 cm) have been adopted by land management agencies based on resource selection or relationships with fitness proxies reported among numerous habitat studies. Some managers, however, have questioned...

article

Native seeds incorporated into activated carbon pods applied concurrently with indaziflam: a new strategy for restoring annual‐invaded communities?

Danielle R. Clenet, Kirk W. Davies, Dustin D. Johnson, Jay D. Kerby

Restoration Ecology > 27 > 4 > 738 - 744

Reestablishing native perennial vegetation in annual grass‐invaded rangelands is critical to restoring ecosystems. Control of exotics, often achieved with preemergent herbicides, is essential for successful restoration of invaded rangelands. Unfortunately, desirable species cannot be seeded simultaneously with preemergent herbicide application due to nontarget damage. To avoid this, seeding is commonly...

article

Postwildfire seeding to restore native vegetation and limit exotic annuals: an evaluation in juniper‐dominated sagebrush steppe

Kirk W. Davies, Jon D. Bates, Chad S. Boyd

Restoration Ecology > 27 > 1 > 120 - 127

Reestablishment of perennial vegetation is often needed after wildfires to limit exotic species and restore ecosystem services. However, there is a growing body of evidence that questions if seeding after wildfires increases perennial vegetation and reduces exotic plants. The concern that seeding may not meet restoration goals is even more prevalent when native perennial vegetation is seeded after...

article

Established Perennial Vegetation Provides High Resistance to Reinvasion by Exotic Annual Grasses

Kirk W. Davies, Dustin D. Johnson

Rangeland Ecology & Management > 2017 > 70 > 6 > 748-754

Exotic annual grasses have invaded millions of hectares of sagebrush (Artemisia L.) steppe in the Great Basin region and degraded wildlife habitat, reduced forage production, and promoted increasingly frequent wildfires. Revegetation after control of exotic annual grasses is needed to restore ecosystem services and break the annual grass-fire cycle. The ability of different common revegetation species...

article

Data set on the effects of conifer control and slash burning on soil carbon, total N, organic matter and extractable micro-nutrients

Jonathan D. Bates, Kirk W. Davies

Data in Brief > 2017 > 14 > C > 515-523

Conifer control in sagebrush steppe of the western United States causes various levels of site disturbance influencing vegetation recovery and resource availability. The data set presented in this article include growing season availability of soil micronutrients and levels of total soil carbon, organic matter, and N spanning a six year period following western juniper (Juniperus occidentalis spp...

article

Legacy microsite effect on the survival of bitterbrush outplantings after prescribed fire: capitalizing on spatial variability to improve restoration

Kirk W. Davies, Chad S. Boyd, Jon D. Bates, Amanda Gearhart

Restoration Ecology > 25 > 5 > 723 - 730

Restoration of shrubs in arid and semi‐arid rangelands is hampered by low success rates. Planting shrub seedlings is a method used to improve success in these rangelands; however, it is expensive and labor intensive. The efficiency of shrub restoration could be improved by identifying microsites where shrub survival is greater. Bitterbrush (Purshia tridentata Pursh DC) is an important shrub to wildlife...

article

Attempting to restore mountain big sagebrush (Artemisia tridentata ssp. vaseyana) four years after fire

Kirk W. Davies, Jon D. Bates, April Hulet

Restoration Ecology > 25 > 5 > 717 - 722

Restoration of shrubs is needed throughout the world because of altered fire regimes, anthropogenic disturbance, and overutilization. The native shrub mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle) is a restoration priority because of its value to wildlife in western North America. One of the principal threats to mountain big sagebrush is encroachment by western juniper...

article

Effects of conifer treatments on soil nutrient availability and plant composition in sagebrush steppe

Jonathan D. Bates, Kirk W. Davies

Forest Ecology and Management > 2017 > 400 > C > 631-644

Piñon-juniper woodlands of the western United States have expanded 2 to 10-fold since the late 1800’s. Tree control measures using chainsaws, heavy equipment and prescribed fire have been used to reduce woodlands and restore big sagebrush steppe and decrease woody fuel loading. We evaluated nutrient availability and herbaceous recovery following various cutting and prescribed fire treatments in late...

article

Influence of Soil Color on Seedbed Microclimate and Seedling Demographics of a Perennial Bunchgrass

Chad S. Boyd, Kirk W. Davies, Jarod A. Lemos

Rangeland Ecology & Management > 2017 > 70 > 5 > 621-624

Perennial bunchgrasses are critical to maintaining sagebrush plant communities, but seeding of native bunchgrasses following fire has had limited success. Previous research indicated that blackened soils beneath burned sagebrush canopies have increased bunchgrass seeding success when compared with interspace locations. We investigated soil moisture and temperature across white, neutral, and black...

article

Plant Community Dynamics 25 Years After Juniper Control

Jon D. Bates, Tony Svejcar, Rick Miller, Kirk W. Davies

Rangeland Ecology & Management > 2017 > 70 > 3 > 356-362

The expansion of piñon-juniper woodlands over the past 100−150 yr in the western United States has resulted in large-scale efforts to kill trees and recover sagebrush steppe rangelands. Western juniper (Juniperus occidentalis spp. occidentalis Hook.) expansion in the northern Great Basin has reduced sagebrush-steppe productivity and habitat. Chainsaw cutting of western juniper woodlands is a commonly...

article

Restoring big sagebrush after controlling encroaching western juniper with fire: aspect and subspecies effects

Kirk W. Davies, Jon D. Bates

Restoration Ecology > 25 > 1 > 33 - 41

The need for restoration of shrubs is increasingly recognized around the world. In the western United States, restoration of mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana [Rydb.] Beetle) after controlling encroaching conifers is a priority to improve sagebrush‐associated wildlife habitat. Conifers can be cost effectively removed with prescribed burning when sagebrush is codominant;...

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Keywords

SAGEBRUSH (12)
RESTORATION (11)
ARTEMISIA TRIDENTATA (8)
CHEATGRASS (7)
FIRE (7)
INVASIVE PLANTS (6)
REVEGETATION (6)
WILDFIRE (6)
ANNUAL GRASS (5)
MEDUSAHEAD (5)
PRESCRIBED BURNING (5)
PRESCRIBED FIRE (5)
BROMUS TECTORUM (4)
BRUSH MANAGEMENT (4)
BUNCHGRASS (4)
BURNING (4)
DIVERSITY (4)
FUEL REDUCTION (4)
INVASION (4)
SAGE-GROUSE (4)
SAGEBRUSH STEPPE (4)
SEEDING (4)
TAENIATHERUM CAPUT-MEDUSAE (4)
WEEDS (4)
WESTERN JUNIPER (4)
WYOMING BIG SAGEBRUSH (4)
AGROPYRON CRISTATUM (3)
ANNUAL GRASSES (3)
DISTURBANCE (3)
HABITAT (3)
INTERSPACE (3)
JUNIPER (3)
JUNIPERUS (3)
RECOVERY (3)
RESILIENCE (3)
RESISTANCE (3)
RESOURCE ISLAND (3)
SEED COATING (3)
ARTEMISIA TRIDENTATE (2)
BRUSH CONTROL (2)
CANOPY (2)
CONIFER CONTROL (2)
COVER (2)
DRILL SEEDING (2)
EXOTIC ANNUAL GRASS (2)
GREAT BASIN (2)
INVASIVE PLANT MANAGEMENT (2)
JUNIPERUS OCCIDENTALIS (2)
NITROGEN (2)
PREVENTION (2)
PRODUCTION (2)
REMOTE SENSING (2)
SECONDARY SUCCESSION (2)
SEED ENHANCEMENT TECHNOLOGY (2)
SEEDLING (2)
SHRUBS (2)
UTILIZATION (2)
WOODLAND ENCROACHMENT (2)
ARTEMISIA TRIDENTATA (1)
BROMUS TECTORUM (1)
BUNCHGRASS (1)
CHEATGRASS (1)
JUNIPERUS OCCIDENTALIS (1)
ACHNATHERUM THURBERIANUM (1)
ACTIVATED CARBON (1)
AERIAL PHOTOGRAPHY (1)
AMMONIUM (1)
ANNUAL GRASS INVASION (1)
ARTEMISIA (1)
ARTEMISIA ARBUSCULA (1)
ARTEMISIA TRIDENTATA SPP. WYOMINGENSIS (1)
ARTEMISIA TRIDENTATA SSP. WYOMINGENSIS (1)
ARTEMISIA TRIDENTATA SUBSP. WYOMINGENSIS (1)
BANKSIA WOODLANDS (1)
BIODIVERSITY (1)
BIOTIC RESISTANCE (1)
BLUEBUNCH WHEATGRASS (1)
BLUEBUNCH WHEATGRASS (PSEUDOROEGNERIA SPICATA) (1)
BROADCAST (1)
CALCIUM (1)
CARBON (1)
CATTLE (1)
CENTROCERCUS UROPHASIANUS (1)
CLIMATE CHANGE (1)
COEXISTENCE (1)
COMPETITION (1)
COMPOSITION (1)
CONIFER WOODLAND (1)
CONSERVATION (1)
CONSERVATION EASEMENTS (1)
CONTAINMENT (1)
COVER POTENTIAL (1)
CRESTED WHEATGRASS (1)
CRUDE PROTEIN (1)
CUTTING (1)
DEGRADATION (1)
DEVELOPMENT (1)
DISTURBANCE THEORY (1)
DOWNY BROME/CHEATGRASS (BROMUS TECTORUM) (1)
DRYLANDS (1)
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Search results for: Kirk W. Davies

Ecological restoration in the age of apocalypse

Native lagomorphs prolong legacy effects limiting restoration of imperiled shrub‐steppe communities

Variable effects of long‐term livestock grazing across the western United States suggest diverse approaches are needed to meet global change challenges

A new perspective and approach to ecosystem restoration: a seed enhancement technology guide and case study

The elevational ascent and spread of exotic annual grass dominance in the Great Basin, USA

Seeding locally sourced native compared to introduced bunchgrasses post‐wildfire in frigid Wyoming big sagebrush communities

Herbicide protection pod technology for native plant restoration: one size may not fit all

Improving restoration success through a precision restoration framework

Improving restoration success through microsite selection: an example with planting sagebrush seedlings after wildfire

Are Sage‐Grouse Fine‐Scale Specialists or Shrub‐Steppe Generalists?

Native seeds incorporated into activated carbon pods applied concurrently with indaziflam: a new strategy for restoring annual‐invaded communities?

Postwildfire seeding to restore native vegetation and limit exotic annuals: an evaluation in juniper‐dominated sagebrush steppe

Established Perennial Vegetation Provides High Resistance to Reinvasion by Exotic Annual Grasses

Data set on the effects of conifer control and slash burning on soil carbon, total N, organic matter and extractable micro-nutrients

Legacy microsite effect on the survival of bitterbrush outplantings after prescribed fire: capitalizing on spatial variability to improve restoration

Attempting to restore mountain big sagebrush (Artemisia tridentata ssp. vaseyana) four years after fire

Effects of conifer treatments on soil nutrient availability and plant composition in sagebrush steppe

Influence of Soil Color on Seedbed Microclimate and Seedling Demographics of a Perennial Bunchgrass

Plant Community Dynamics 25 Years After Juniper Control

Restoring big sagebrush after controlling encroaching western juniper with fire: aspect and subspecies effects

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