Fire, livestock grazing, topography, and precipitation affect occurrence and prevalence of cheatgrass (Bromus tectorum) in the central Great Basin, USA
| Autor: | Ralph Charles Mac Nally, Jeanne C. Chambers, Frank A. Fogarty, Martha Wohlfeil Zillig, Ned Horning, Erica Fleishman, Matthias Leu, David I. Board, Matthew A. Williamson, Bethany A. Bradley, David S. Dobkin |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Ecology Perennial plant biology Range (biology) 010604 marine biology & hydrobiology Structural basin Bromus tectorum Native plant biology.organism_classification 010603 evolutionary biology 01 natural sciences Agronomy Abundance (ecology) Grazing Precipitation Ecology Evolution Behavior and Systematics |
| Zdroj: | Biological Invasions. 22:663-680 |
| ISSN: | 1573-1464 1387-3547 |
| Popis: | Cheatgrass (Bromus tectorum) has increased the extent and frequency of fire and negatively affected native plant and animal species across the Intermountain West (USA). However, the strengths of association between cheatgrass occurrence or abundance and fire, livestock grazing, and precipitation are not well understood. We used 14 years of data from 417 sites across 10,000 km2 in the central Great Basin to assess the effects of the foregoing predictors on cheatgrass occurrence and prevalence (i.e., given occurrence, the proportion of measurements in which the species was detected). We implemented hierarchical Bayesian models and considered covariates for which > 0.90 or |
| Databáze: | OpenAIRE |
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