Article
Ecology
Kirk W. Davies, Jon D. Bates, Chad S. Boyd, Rory O'Connor, Stella Copeland
Summary: The study found that moderate grazing before a fire can reduce fire-induced mortality, decrease fire severity, increase post-fire plant biomass, and enhance plant biodiversity. In comparison, areas that were not grazed showed lower biodiversity and a shift towards a new ecosystem state dominated by an exotic annual grass species.
RANGELAND ECOLOGY & MANAGEMENT
(2021)
Article
Multidisciplinary Sciences
Allison B. Simler-Williamson, Matthew J. Germino
Summary: This study examines the success of postfire sagebrush seeding treatments in restoring sagebrush shrubs in semiarid areas of the western USA. By considering selection biases and using remotely sensed data, the study finds that treatment effects were positive, although treatments were disproportionately applied in more stressful ecological conditions. The findings highlight the importance of considering biases and prioritizing interventions based on climate.
NATURE COMMUNICATIONS
(2022)
Article
Ecology
Patrick E. Clark, Benjamin A. Porter, Mike Pellant, Kathryn Dyer, Tyler P. Norton
Summary: Invasive and highly flammable annual grasses have been altering wildfire regimes in the western United States. Existing fuel management strategies are struggling to keep up with this growing threat. Targeted livestock grazing can reduce fine fuels effectively while avoiding adverse effects on ecosystems.
RANGELAND ECOLOGY & MANAGEMENT
(2023)
Article
Ecology
Helen R. Sofaer, Catherine S. Jarnevich, Erin K. Buchholtz, Brian S. Cade, John T. Abatzoglou, Cameron L. Aldridge, Patrick J. Comer, Daniel Manier, Lauren E. Parker, Julie A. Heinrichs
Summary: This study develops predictive maps of potential cheatgrass cover to support management efforts. The research highlights areas where cheatgrass abundance could increase, such as burned areas, low elevations, and locations with favorable fall germination conditions. The results can guide resource allocation and planning to reduce invasion risk.
Article
Ecology
Bryan C. Tarbox, Nathan D. Van Schmidt, Jessica E. Shyvers, D. Joanne Saher, Julie A. Heinrichs, Cameron L. Aldridge
Summary: Invasions of non-native species pose significant challenges to ecosystem management and conservation, particularly in the case of invasive annual grasses such as cheatgrass, medusahead, and ventenata in sagebrush-steppe communities of the western United States. Spatial data describing the distribution and abundance of these invasive species are used by resource managers, but there are obstacles in translating these datasets into actionable management strategies. Improving the spatial resolution and accuracy of such data products can help bridge the research-implementation gap.
RANGELAND ECOLOGY & MANAGEMENT
(2022)
Article
Ecology
William J. Price, April Hulet, K. Scott Jensen, Eva K. Strand, Chad S. Boyd, Kirk W. Davies, Dustin D. Johnson, Barry L. Perryman, Yanming Di, Sergio A. Arispe
Summary: This research examines the potential of dormant season grazing as a management strategy to reduce the negative impacts of medusahead while promoting recovery of perennial vegetation. The results suggest that 2 years of grazing treatments may not be sufficient to effectively reduce the abundance of medusahead, but dormant season grazing does not have a detrimental effect on perennial vegetation.
RANGELAND ECOLOGY & MANAGEMENT
(2023)
Article
Agronomy
Toby M. M. Maxwell, Matthew J. J. Germino, Seth Romero, Lauren M. M. Porensky, Dana M. M. Blumenthal, Cynthia S. S. Brown, Peter B. B. Adler
Summary: This study demonstrates that soil surface temperature and plant density have a significant impact on the germination, growth, and phenology of cheatgrass. The researchers also assessed a new method of temperature manipulation using black and white gravel.
Article
Microbiology
Nathan J. Ricks, Taryn Williamson, Susan E. Meyer, John M. Chaston, Craig E. Coleman
Summary: The study compared fungal communities between areas with and without Cheatgrass stand failures, finding that sites experiencing failures had higher abundance of specific fungal species.
Article
Ecology
Adam L. Mahood, Michael J. Koontz, Jennifer K. Balch
Summary: A key challenge in ecology is understanding how multiple drivers interact to precipitate persistent vegetation state changes. In the sagebrush shrublands of the western United States, widespread annual grass invasion has increased fuel connectivity, which increases the size and spatial contiguity of fires, leading to postfire monocultures of introduced annual grasses (IAG). But the mechanisms by which prefire invasion and fire occurrence are linked to higher postfire flammability are not fully understood.
Article
Ecology
Adam L. Mahood, Erica Fleishman, Jennifer K. Balch, Frank Fogarty, Ned Horning, Matthias Leu, Martha Zillig, Bethany A. Bradley
Summary: The study measured the cover and aboveground biomass (AGB) of cheatgrass at 60 locations in the north-central Great Basin and found a strong, linear relationship between percent cover and AGB.
JOURNAL OF ARID ENVIRONMENTS
(2021)
Article
Ecology
Cheryl McIntyre, Steven R. Archer, Katharine Predick, Jayne Belnap
Summary: Biocrusts covering dryland soil interact with vascular plants, potentially influencing plant recruitment safety and susceptibility to invasion by non-native species. The differential effects of biocrusts on native and non-native grass recruitment varied across experiments, suggesting that plant recruitment on biocrusts is driven more by species-specific traits than species provenance. Greenhouse experiments indicate that biocrust topographic relief is an important factor influencing plant recruitment.
Article
Agriculture, Multidisciplinary
Travis M. Bean, Josh S. Davy, Guy B. Kyser, Elise S. Gornish
Summary: Intensive grazing can significantly reduce the seed numbers of barb goatgrass and medusahead; glyphosate application at different stages can effectively control the density of target species; combining glyphosate application at boot or heading stage with intensive grazing can achieve better results.
CALIFORNIA AGRICULTURE
(2021)
Article
Ecology
Karun Pandit, Hamid Dashti, Andrew T. Hudak, Nancy F. Glenn, Alejandro N. Flores, Douglas J. Shinneman
Summary: The study investigated the impact of wildfires on vegetation composition and gross primary production in sagebrush ecosystems using a dynamic global vegetation model in the Reynolds Creek Experimental Watershed in the Great Basin. Results showed a gradual decline in GPP for fire-introduced areas instead of immediate vegetation loss. Comparisons with satellite-derived GPP estimates revealed moderate pixel-level correlations in post-fire recovery maps.
Article
Ecology
Samdanjigmed Tulganyam, Craig A. Carr
Summary: A bulldozed fire line is a fire-suppression technique that alters fuel continuity to limit fire movement. This study examines the ecological impacts of bulldozed fire lines in grassland systems and finds that they can have lasting effects on vegetation properties. The loss of perennial grasses and invasion of annual grasses are observed, suggesting the need to limit the use of bulldozed fire lines as a suppression activity.
Article
Biodiversity Conservation
Adam L. Mahood, Rachel O. Jones, David Board, Jennifer K. Balch, Jeanne C. Chambers
Summary: Exotic plant invasions alter ecosystem properties and threaten ecosystem functions globally. Interannual climate variability influences both plant community composition and soil properties, and interactions between them influence nitrogen and carbon pools. In semiarid shrubland, high water availability leads to higher herbaceous cover, while native shrubs and perennial grasses help maintain soil C and N, but their loss due to annual grass invasion can lead to long-term declines in soil N and C.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Ecology
Joaquin Aldabe, Ana Ines Sanchez-Iriarte, Mercedes Rivas, Oscar Blumetto
Summary: Success in conserving biodiversity in rangelands depends on effectively managing the systems to achieve positive economic outcomes while preserving biodiversity. This study found that managing grass height can increase forage mass without replacing native vegetation. However, the impact on grassland bird populations remains unclear. The findings suggest that maintaining grassland bird specialists and potentially increasing livestock production is feasible, but longer time frames may be needed to support endangered tall grass specialists.
RANGELAND ECOLOGY & MANAGEMENT
(2024)
Article
Ecology
Timothy H. Parker, Alex Gerber, Erin Campbell, Molly Simonson, Robert K. Shriver, Lyman Persico
Summary: Many perennial plants in semiarid rangelands have experienced population declines. Solar radiation may be the primary factor causing high seedling mortality on south-facing slopes.
RANGELAND ECOLOGY & MANAGEMENT
(2024)
Article
Ecology
Amin Ghasemi, Mahmoud-Reza Hemami, Sorour Karimi, Majid Iravani, Josef Senn
Summary: Seed dispersal is of great importance in plant ecology. This study examines the role of the onager in the endozoochoric seed dispersal of various plant species in an Iranian national park. The findings highlight the significance of conserving this threatened subspecies to maintain seed dispersal in arid habitats.
RANGELAND ECOLOGY & MANAGEMENT
(2024)
Article
Ecology
Nicki Frey, Jeffrey L. Beck, Loretta Singletary, Laura Snell, Derek Scasta, Jessie Hadfield
Summary: This article presents a survey on public knowledge of wild free-roaming horse populations. The results indicate that the public has limited understanding of the ecology and management of these horses, which may affect their ability to support management efforts and distinguish fact from propaganda.
RANGELAND ECOLOGY & MANAGEMENT
(2024)
Article
Ecology
Seyedeh Khadijeh Mahdavi, Mohammadreza Shahraki, Mohsen Sharafatmandrad
Summary: This study aimed to analyze the impact of Turkmen pastoralists' participation in rangeland restoration practices in Aqqala County. The results showed that pastoralists' age, annual income, number of animals, and animal husbandry experience had positive relationships with participatory behavior. Pastoralists who were members of rangeland management cooperatives and participated in training courses performed better in implementation. By identifying the consequences of participatory behavior, barriers to participation in restoration practices can be overcome.
RANGELAND ECOLOGY & MANAGEMENT
(2024)
Article
Ecology
Corinna M. Holfus, Chad S. Boyd, Roxanne C. Rios, Kirk W. Davies, Stella M. Copeland, Ricardo Mata-Gonzalez
Summary: The distribution of Wyoming big sagebrush has decreased due to its interaction with invasive annual grasses and increased wildfire frequency. Traditional seeding methods have low success rates, while transplanting sagebrush has a higher success rate. Planting younger transplants and controlling invasive annual grasses before planting can increase transplant survival and canopy volume.
RANGELAND ECOLOGY & MANAGEMENT
(2024)