Results 31 to 40 of about 471 (173)
Land, 2022 Two species of Psilochalcis (Hymenoptera: Chalcididae) wasps occurring in the Great Basin region of the western United States were sampled from three locations in central Utah (USA) over a two-year period using Malaise traps. Each location is composed of
Mark J. Petersen +3 more
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Agronomy, 2020 The impacts of climate change are expected to alter the abundance and distribution of invasive annual grasses, such as Bromus tectorum L. (cheatgrass) and Ventenata dubia (Leers) Coss. (ventenata).
Audrey J. Harvey +3 more
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Re-Establishing Perennial Vegetation in Cheatgrass Monocultures [PDF]
Rangelands, 2003 Humans have had a significant impact on shrublands of the western United States. The introduction of large numbers of livestock into native plant communities that had evolved without grazing pressure has greatly altered vegetation composition. Overgrazing resulted in the loss of perennial grasses and facilitated the widespread invasion by annual ...
Thomas A. Monaco +2 more
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Soil Heating, Nitrogen, Cheatgrass, and Seedbed Microsites [PDF]
Journal of Range Management, 1994 Heat-induced changes in the soil-solution and post-wildfire erosion can create chemically and texturally diverse seedbed microsites. We quantified organic carbon, extractable NH4+ after incubation (aerobic and anaerobic), and emergence of cheatgrass (Bromus tectorum L.), by particle size fractions, in unburned and simulated burned sagebrush ...
Robert R. Blank +2 more
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Warming, soil moisture, and loss of snow increase Bromus tectorum’s population growth rate
Elementa: Science of the Anthropocene, 2014 Climate change threatens to exacerbate the impacts of invasive species. In temperate ecosystems, direct effects of warming may be compounded by dramatic reductions in winter snow cover.
Aldo Compagnoni, Peter B. Adler
doaj +1 more source
Patterns in Cheatgrass Abundance in Foothills Grasslands in Montana
Journal of Environment and Ecology, 2022 Cheatgrass (Bromus tectorum L.) is an invasive, exotic annual grass that exerts substantial negative ecological and economic influence in many of the ecosystems it invades. Cheatgrass has been extensively studied in the Great Basin region of North America where most precipitation comes in winter and early spring and the vegetation consists primarily of
Rebecca Ozeran, Craig Carr
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Local adaptation in the native and invaded ranges of cheatgrass
, 2022 This poster is a submission to Evolution 2022. PDF dimensions are 3 x 3 ft.
Gamba, Diana +7 more
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Group effects of a non‐native plant invasion on rodent abundance
Ecosphere, 2019 Cheatgrass (Bromus tectorum) is the most prolific invading plant in western North America. Investigations determining the impact of this invasion on population state variables and community dynamics of rodents have largely occurred at the community or ...
Bryan M. Kluever +2 more
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Ecosphere, 2021 Biological soil crusts (biocrusts) cover the soil surface of global drylands and interact with vascular plants. Biocrusts may influence the availability and nature of safe sites for plant recruitment and the susceptibility of an area to invasion by non ...
Cheryl McIntyre +3 more
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Long‐term effects of tree expansion and reduction on soil climate in a semiarid ecosystem
Ecosphere, 2020 In sagebrush ecosystems, pinyon and juniper tree expansion reduces water available to perennial shrubs and herbs. We measured soil water matric potential and temperatures at 13–30 and 50–65 cm soil depths in untreated and treated plots across a range of ...
Bruce A. Roundy +4 more
doaj +1 more source