Competition from Bromus tectorum removes differences between perennial grasses in N capture and conservation strategies
نویسندگان
چکیده
منابع مشابه
Native Perennial Grasses Show Evolutionary Response to Bromus tectorum (Cheatgrass) Invasion
Invasive species can change selective pressures on native plants by altering biotic and abiotic conditions in invaded habitats. Although invasions can lead to native species extirpation, they may also induce rapid evolutionary changes in remnant native plants. We investigated whether adult plants of five native perennial grasses exhibited trait shifts consistent with evolution in response to in...
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Cheatgrass (Bromus tectorum L.) is a winter annual weed that presents a serious obstacle to rangeland restoration in the Intermountain West. The objective of this study was to evaluate factors regulating the size and persistence of cheatgrass carryover seed banks on semiarid sites in western Utah. We prevented current-year seed production in each of four habitats, then tallied emerging seedling...
متن کاملDifferences Between Grasses and Browses
Grasses (monocots), forbs and browse (dicots) differ in structure and chemistry. Grasses have a thicker cell wall containing potentially digestible structural carbohydrates, fewer secondary plant chemicals, and have a relatively low and homogenous growth relative to browses. Mammalian herbivores can be classified along a continuum according to which plant type they prefer. Diet choices correspo...
متن کاملSeeding Cool-Season Grasses to Suppress Broom Snakeweed (Gutierrezia sarothrae), Downy Brome (Bromus tectorum), and Weedy Forbs
Broom snakeweed (snakeweed) is an aggressive native range-weed found throughout arid and semiarid areas of the western United States, that increases following disturbances such as overgrazing, drought, or wildfire. Ecologically based strategies that include controlling snakeweed and reestablishing desirable herbaceous species are needed to restore productivity and diversity to invaded areas. Th...
متن کاملSuppression of annual Bromus tectorum by perennial Agropyron cristatum: roles of soil nitrogen availability and biological soil space
Worldwide, exotic invasive grasses have caused numerous ecosystem perturbations. Rangelands of the western USA have experienced increases in the size and frequency of wildfires largely due to invasion by the annual grass Bromus tectorum. Rehabilitation of invaded rangelands is difficult; but long-term success is predicated on establishing healthy and dense perennial grass communities, which sup...
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ژورنال
عنوان ژورنال: Plant and Soil
سال: 2016
ISSN: 0032-079X,1573-5036
DOI: 10.1007/s11104-016-3053-4