Initial Invasion of Cheatgrass (Bromus tectorum) into Burned Piñon-Juniper Woodlands in Western Colorado

Getz, Hilary L.; Baker, William L.

doi:10.1674/0003-0031(2008)159[489:iiocbt]2.0.co;2

Cited by 18 publications

(12 citation statements)

References 36 publications

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“…Of the six aerial seedings, two cases resulted in decreases in invasive thistles after seeding (Goodrich & Rooks ; Floyd et al ), and the only drill seeding showed a reduction in B. tectorum (Clary & Wagstaff ). Three cases showed no decrease in B. tectorum (Goodrich & Rooks ; Floyd et al ; Thompson et al ), while one reported an increase (Getz & Baker ).…”

Section: Resultsmentioning

confidence: 99%

Does Seeding After Wildfires in Rangelands Reduce Erosion or Invasive Species?

Pyke

Wirth

Beyers

2013

Restoration Ecology

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Mitigation of ecological damage caused by rangeland wildfires has historically been an issue restricted to the western United States. It has focused on conservation of ecosystem function through reducing soil erosion and spread of invasive plants. Effectiveness of mitigation treatments has been debated recently. We reviewed recent literature to conduct a meta-analysis of seeding after wildfires to determine if seedings may (1) protect ecosystems against soil erosion and (2) reduce invasion or abundance of undesirable nonnative plant species. Effectiveness of postfire seedings was examined in 8 erosion and 19 invasive species cases. Seeding has little effect on erosion during the first year after fire and is highly dependent upon initial establishment and coverage of species in successive years. Among all seeding cases, 28% reduced, 67% were neutral, and 5% increased invasive species abundance. Older seedings were more likely to show reductions in invasives than younger seedings. Seedings with high plant establishment were more likely to reduce invasives than those with low establishment. Studies are needed that examine (1) frequency of adequate establishment of postfire seedings and causal factors of success or failure, (2) long-term impacts of seeding along a range of initial establishment and concomitant plant coverage over time as it relates to erosion and abundance of invasive plant species, and (3) auxiliary treatments designed to increase likelihood of germination and establishment given the inevitable variability of environmental conditions. These studies would aid land managers in deciding when postfire treatments are required and their likely level of success.

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Section: Resultsmentioning

confidence: 99%

Does Seeding After Wildfires in Rangelands Reduce Erosion or Invasive Species?

Pyke

Wirth

Beyers

2013

Restoration Ecology

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“…Roads are often used as a fire break, but because roads already have the highest percentage cover and largest mean patch area, burning to or from them is likely to favor cheatgrass expansion. Roads could be creating additional opportunities for cheatgrass to invade burned areas because of the larger cheatgrass patches (Figure 4) fostered by increased disturbance and dispersal by vehicles, and because of greater moisture along roads (Gelbard and Belnap 2003;Getz and Baker 2008). Some aspects of road construction and/or design could be modified to discourage cheatgrass.…”

Section: Discussionmentioning

confidence: 99%

“…This suggests that there is an interaction occurring in response measures, though its nature is unclear. Cheatgrass has been documented as being associated with fire historically and in recent studies (Klemmendson and Smith 1964;Getz and Baker 2008), and it is recognized as a potential challenge to invasive species management within the National Park System (Merriam et al 2004). If the management goal is to maintain the park's vegetation in a natural condition, prescribed burning and mechanical treatment is inadvisable where cheatgrass is present or could be dispersed into the burned or treated area.…”

Section: Discussionmentioning

confidence: 99%

“…This could also be used, along with direct control, as pre-and post-disturbance treatment where disturbance is planned, for example, in places where lodgepole pine is being cleared mechanically due to bark-beetle kill. In some cases, caution must be taken with seeding, as it can be associated with increased cheatgrass, due to contaminated seed mixes or because some mixes may favor cheatgrass (Getz and Baker 2008). With more potential disturbances in the future, particularly in light of bark-beetle kill, nitrogen deposition in soils from air pollution, and climatic change, it is possible that current areas of susceptibility will expand (including to higher elevations), shift, or shrink.…”

Section: Discussionmentioning

confidence: 99%

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Backcountry Huts as Introduction Points for Invasion by Non-native Species into Subalpine Vegetation

Morgan

Carnegie

2009

Arctic, Antarctic, and Alpine Research

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“…Because cheatgrass is an extremely effective post-disturbance competitor in semiarid and arid environments, it has become the dominant land cover over about 20,000 km 2 in the Great Basin (Bradley and Mustard 2005). It invades areas after disturbances like road construction, overgrazing, and fire (Bradley 2010;Getz and Baker 2008;Young et al 1987), and, because it is extremely flammable after it senesces, cheatgrass dramatically (1) Estimate cheatgrass BOSG for two years in the northern Great Basin by integrating remote sensing data and geophysical variables into a regression-tree model. (2) Advance the understanding of drivers of cheatgrass BOSG by analyzing the model outputs and associated maps generated by the model application.…”

Section: Introductionmentioning

confidence: 99%