The Chemical Composition of Medusahead and Downy Brome

Bovey, R. W.; Tourneau, Duane Le; Erickson, Louis C.

doi:10.2307/4040420

Cited by 49 publications

(59 citation statements)

References 4 publications

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“…Medusahead matures 2e3 weeks later than cheatgrass (Bovey et al, 1961;Harris, 1977). Recently, James et al (2008) measured leaf biomass over the growing season and found that medusahead maintained vegetative growth later in the growing season than cheatgrass.…”

Section: Discussionmentioning

confidence: 98%

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Field growth comparisons of invasive alien annual and native perennial grasses in monocultures

Mangla

Sheley

James

2011

Journal of Arid Environments

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Section: Discussionmentioning

confidence: 98%

“…In the Intermountain West, the exponential increase in dominance by medusahead has largely been at the expense of other annual grasses, especially cheatgrass (Bovey et al, 1961;Harris, 1977). In this scenario, medusahead either joins, replaces or displaces cheatgrass (Hironaka, 1989).…”

Section: Introductionmentioning

confidence: 98%

Field growth comparisons of invasive alien annual and native perennial grasses in monocultures

Mangla

Sheley

James

2011

Journal of Arid Environments

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“…Leaf (Bovey et al 1961). Silicon accumulation in 3 groups of grasses as a function of growth stage is shown in Figure.1.…”

Section: Siliconmentioning

confidence: 99%

Journal of Range Management, Volume 54, Number 4 (July 2001)

2001

REM

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The objectives of this Colorado study were to assess primary reasons ranchers choose to stay or sell the ranch, compare the motivations for ranching between a traditional agriculturally based county and a rapidly developing county, and assess whether factors such as length of tenure, fiscal dependency on ranching, and dependency on public lands play roles in decisions to sell. Personal interviews were conducted with 37 ranchers. While land use conversion occurs for a wide variety of reasons, lack of heirs and detrimental public policy were important reasons given for selling ranches. Responses showed Routt County (a rapidly developing county) ranchers were more likely to sell due to land use conversion related issues than Moffat County ranchers (p = 0.056). Ranchers with a longer legacy on their land reported that profitability, having likely heirs, and continuing tradition enhanced their reasons to stay. Groups more "at risk" of selling were non-homesteading ranchers close to retirement, larger ranches, and ranchers dependent on ranching for income with declining profits. Large ranch owners experiencing land use conflicts with non-ranchers and ranchers modestly dependent on public forage experiencing changes in public policy regulations and land use conflicts also indicated a higher proclivity to sell. Noting how groups of ranchers are impacted by different changes can help refine community efforts related to land use conversion and create more thoughtful policy measures.

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“…Taeniatherum caput-medusae can out-compete native vegetation because it initiates growth earlier and acquires more resources than many native plants (James et al 2008;Young and Mangold 2008). Litter from T. caput-medusae has a slow decomposition rate allowing it to build up over time and stifle out desirable native plants (Bovey et al 1961;Harris 1965).…”

Section: Introductionmentioning

confidence: 98%

Non-native competitive perennial grass impedes the spread of an invasive annual grass

2010

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Invasive plants are degrading wildlands around the globe by displacing native species, reducing biodiversity, and altering ecological functions. The current approach of applying herbicides to invasive plants in wildlands has not been effective at curtailing their expansion and, in certain circumstances, may do more harm than good. Preventing the spread of invasive species has been identified as an important strategy to protect wildlands. However, few prevention strategies have actually been tested. We hypothesized that establishing competitive vegetation next to infestations would increase the biotic resistance of the plant community to invasion and decrease the invasive species propagule pressure beyond the competitive vegetation. To evaluate this, we established twelve competitive vegetation barriers in front of invasive annual grass, Taeniatherum caput-medusae (L.) Nevski, infestations. The nonnative perennial grass Agropyron desertorum (Fisch. ex Link) Schult. was seeded into plant communities adjacent to the infestations to create the competitive vegetation barriers. Soil nutrient concentrations and the spread of T. caput-medusae were compared between where A. desertorum was seeded and not seeded (control treatment) 3 years after treatment. Less T. caput-medusae and lower soil ammonium and potassium concentrations in the competitive vegetation barrier than control treatment (P B 0.01) suggest that establishing competitive vegetation increased the biotic resistance of the plant communities to invasion. Taeniatherum caput-medusae cover and density in the plant communities protected by the competitive vegetation barrier (locales across the barriers from the infestations) were *42-and 47-fold less, respectively, than unprotected plant communities (P \ 0.01). This suggests that invasive plant propagule pressure was decreased in the plant communities protected by competitive vegetation barriers. The establishment of competitive vegetation around infestations may be an effective strategy to prevent or at least reduce the spread of invasive plant species.

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The Chemical Composition of Medusahead and Downy Brome

Cited by 49 publications

References 4 publications

Field growth comparisons of invasive alien annual and native perennial grasses in monocultures

Field growth comparisons of invasive alien annual and native perennial grasses in monocultures

Journal of Range Management, Volume 54, Number 4 (July 2001)

Non-native competitive perennial grass impedes the spread of an invasive annual grass

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