Cheatgrass Encroachment on a Ponderosa Pine Forest Ecological Restoration Project in Northern Arizona

McGlone, Christopher M.; Springer, Judith D.; Covington, W. Wallace

doi:10.3368/er.27.1.37

Cited by 32 publications

(25 citation statements)

References 40 publications

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“…Other thinned and burned areas of Mt. Trumbull were seeded after treatment and similar patterns of cheatgrass invasion were observed (McGlone et al, 2009). The high level of disturbance associated with the thinning and burning treatments may have compromised the sparse vegetation and seedbank present at the initiation of the project.…”

Section: Discussionsupporting

confidence: 58%

Can pine forest restoration promote a diverse and abundant understory and simultaneously resist nonnative invasion?

McGlone

Springer

Laughlin

2009

Forest Ecology and Management

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Section: Discussionsupporting

confidence: 58%

Can pine forest restoration promote a diverse and abundant understory and simultaneously resist nonnative invasion?

McGlone

Springer

Laughlin

2009

Forest Ecology and Management

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“…Herbaceous upland montane and shrubland appear the most inherently susceptible vegetation types (Figure 3). Semi-arid grasslands and sagebrush shrublands are centers of cheatgrass invasion throughout the West (Young and Tipton 1989;Epanchin-Niell et al 2009), though cheatgrass has been documented to spread into disturbed forested areas, especially those that have been burned (Keeley and McGinnis 2007;McGlone et al 2009). …”

Section: Discussionmentioning

confidence: 99%

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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“…This prevalence is associated with recent increases in fire and anthropogenic disturbance in ponderosa pine forests (Gildar et al 2004;Keeley 2006;Fowler et al 2008). In 2002-2003, a ponderosa pine forest ecological restoration project in the Uinkaret Mountains of northern Arizona became heavily invaded by cheatgrass immediately following a severe drought and wet autumn and winter (McGlone et al 2009a). Cheatgrass populations expanded from being a minor component of the vegetation to becoming the dominant understory species over much of the landscape.…”

Section: Introductionmentioning

confidence: 96%

Invasion resistance and persistence: established plants win, even with disturbance and high propagule pressure

2010

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Disturbances and propagule pressure are key mechanisms in plant community resistance to invasion, as well as persistence of invasions. Few studies, however, have experimentally tested the interaction of these two mechanisms. We initiated a study in a southwestern ponderosa pine (Pinus ponderosa Laws.)/bunch grass system to determine the susceptibility of remnant native plant communities to cheatgrass (Bromus tectorum L.) invasion, and persistence of cheatgrass in invaded areas. We used a 2 9 2 factorial design consisting of two levels of aboveground biomass removal and two levels of reciprocal seeding. We seeded cheatgrass seeds in native plots and a native seed mixture in cheatgrass plots. Two biomass removal disturbances and sowing seeds over 3 years did not reverse cheatgrass dominance in invaded plots or native grass dominance in non-invaded native plots. Our results suggest that two factors dictated the persistence of the resident communities. First, bottlebrush squirreltail (Elymus elymoides (Raf.) Swezey) was the dominant native herbaceous species on the study site. This species is typically a poor competitor with cheatgrass as a seedling, but is a strong competitor when mature. Second, differences in pretreatment levels of plantavailable soil nitrogen and phosphorus may have favored the dominant species in each community. Annual species typically require higher levels of plant-available soil nutrients than perennial plants. This trend was observed in the annual cheatgrass community and perennial native community. Our study shows that established plants and soil properties can buffer the influences of disturbance and elevated propagule pressure on cheatgrass invasion.

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Cheatgrass Encroachment on a Ponderosa Pine Forest Ecological Restoration Project in Northern Arizona

Cited by 32 publications

References 40 publications

Can pine forest restoration promote a diverse and abundant understory and simultaneously resist nonnative invasion?

Can pine forest restoration promote a diverse and abundant understory and simultaneously resist nonnative invasion?

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

Invasion resistance and persistence: established plants win, even with disturbance and high propagule pressure

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