A systematic review of management efforts on goatgrass (Aegilops spp) dominance

Gornish, Elise S.; Case, Erica J.; Valle, M.M. Del; Bean, Travis M.; Moore‐O’Leary, Kara A.

doi:10.1007/s11258-018-0817-3

Cited by 15 publications

(11 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is unsurprising as the cost of management approaches is not often considered in the applied research literature (e.g. Gornish et al 2018). The only two studies found that included the cost of planting and maintenance per acre came to opposite conclusions in terms of the cost effectiveness of applied nucleation versus conventional planting methods.…”

Section: Discussionmentioning

confidence: 99%

The use of spatially patterned methods for vegetation restoration and management across systems

Shaw

Roche

Gornish

2020

Restoration Ecology

Self Cite

View full text Add to dashboard Cite

Widespread degradation of natural lands has created an urgent need for restoration. However, the high cost of conventional techniques limits the extent and success of restoration efforts. As a result, practitioners have developed new cost‐effective techniques. Spatially patterned restoration methods, where established clusters of plant species serve as propagule sources across a broad target area, have been proposed as practical restoration techniques. The spatial patterning is expected to reduce initial costs and provide ecological benefits such as increasing habitat heterogeneity. Over the past three decades, multiple spatially patterned restoration methods have emerged around the globe; however, it is unclear whether applications and theoretical foundations have been connected across methods. We conducted a literature review and bibliometric network analyses to (1) examine patterns in focal study systems, cost‐effectiveness, and ecological outcomes for spatially patterned restoration methods and (2) analyze connectivity among the bodies of literature associated with common spatially patterned restoration methods to identify knowledge gaps and synergies. We found the three most commonly studied methods are applied nucleation, slot seeding, and strip seeding. Applied nucleation studies mainly occurred in tropical forests and emphasized plant diversity and seed‐dispersing animal visitation. Slot‐seeding and strip‐seeding studies both primarily occurred in temperate grasslands and emphasized plant establishment and production. Applied nucleation and slot‐seeding approaches had distinct theoretical bases, as evidenced by patterns in reference citation, while strip‐seeding approaches did not draw from a unified body of literature. We discuss the need for full economic analyses and theoretical links between the different methods.

show abstract

Section: Discussionmentioning

confidence: 99%

The use of spatially patterned methods for vegetation restoration and management across systems

Shaw

Roche

Gornish

2020

Restoration Ecology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The utility of an integrated pest management approach in which several mutually supportive treatments are used to target invasives has been shown to be particularly effective in many studies (Davies and Sheley 2011; DiTomaso 2000; James et al 2015). Treatments performed in isolation often occur as a single treatment over a time period, whereas multiple treatment types across time allow a manager to eradicate several generations and different cohorts with multiple treatments (e.g., fire destroys all adult individuals but follow-up manual removal could be used to eradicate new seedlings coming up over the next 2 years; Gornish et al 2018). We found that that fire followed by additional treatments such as follow-up herbicide application, manual removal, or seeding resulted in much greater P. ciliare control while enhancing native species establishment compared with fire without additional restoration (Figure 1; Daehler and Goergen 2005;Mayeux and Hamilton 1983;Rutman and Dickson 2002).…”

Section: Land Management Implicationsmentioning

confidence: 99%

“…Therefore, there is a need for a systematic review on the outcomes of various P. ciliare treatment methods and land management techniques to understand best practices and opportunities. Review papers can be a powerful tool for weed management, because they identify overarching environmental and treatment variables and extract emerging patterns that would be valuable for land managers (e.g., Gornish et al 2018;James et al 2015). The aim of this review paper is to coalesce evidence scattered throughout published papers and gray literature on the efficacy of various P. ciliare treatment methods as well as the secondary effects of treatment on native species.…”

Section: Introductionmentioning

confidence: 99%

Pennisetum ciliare: a review of treatment efficacy, competitive traits, and restoration opportunities

Farrell

Gornish

2019

Invasive plant sci. manag.

Self Cite

View full text Add to dashboard Cite

Buffelgrass [Pennisetum ciliare (L.) Link] is a drought-tolerant invasive grass that is a threat to native biodiversity in the drylands of the Americas and Australia. Despite efforts from land managers to control P. ciliare, management approaches tend to have mixed success, treatment results can be poorly communicated among entities, and there are few long-term controlled studies. In this literature review, we synthesize data from both peer-reviewed and “gray” literature on the efficacy of management techniques to control P. ciliare and the secondary impacts to native plant communities. Our search resulted in 42 unique sources containing a total of 229 studies that we categorized into 10 treatment types, which included herbicide, seeding, manual removal, fire, grazing, biocontrol, fire + additional treatments, manual removal + additional treatments, herbicide + additional treatments, and herbicide + manual removal. We found that treatments that used multiple techniques in tandem along with follow-up treatments were the most effective at controlling P. ciliare. Fewer than one-third of the studies reported impacts of management on native species, and the most commonly studied treatment (herbicide, N = 130) showed detrimental impacts on native plant communities. However, the average time between treatment and outcome measurement was only 15 mo; we suggest the need for more long-term studies of treatment efficacy and secondary impacts of treatment on the ecosystem. Finally, we conducted a second literature review on P. ciliare biology and traits for mechanisms that allows P. ciliare to alter the invaded environment to facilitate a competitive advantage over native species. We found evidence of self-reinforcing feedbacks of invasion being generated by P. ciliare through its interactions with water availability, nutrient cycling, and disturbance regimes. We developed a conceptual model of P. ciliare based on these feedback loops and offer management considerations based on its invasion dynamics and biology.

show abstract

“…However, taxa‐specific herbicides can vary widely in their effectiveness at controlling a given species (e.g. Gornish et al ). The ideal timing and concentration of application differ between chemicals and target species (e.g.…”

Section: Discussionmentioning

confidence: 99%

Community‐level effects of herbicide‐based restoration treatments: structural benefits but at what cost?

Bennion

Ferguson²,

New

et al. 2020

Restoration Ecology

View full text Add to dashboard Cite

Invasive species alter ecosystem structure, impact biodiversity, and have significant economic costs. In Oregon's Willamette Valley, invasive grasses Arrhenatherum elatius and Schedonorus arundinaceus alter the dynamics of the phenologically paired interaction between an endangered butterfly, Icaricia icarioides fenderi (Fender's blue), and its larval host plant, Lupinus oreganus (Kincaid's lupine). To test methods to restore this interaction, we established a 3-year experiment where a post-emergent grass-specific herbicide, fluazifop-p-butyl, was applied to Fender's blue habitat. Plant community data were recorded throughout the growing season at eight paired plots for 1 year prior to treatment and 3 years during treatment. We asked whether annual application of herbicide could reduce the height of invasive grasses to levels at or beneath the height of Kincaid's lupine racemes throughout the Fender's blue flight season. We hypothesized that native forb species, which are critical nectar sources for Fender's blue, would increase in cover and frequency following the release from competitive dominance of invasive grasses. Grass-specific herbicide reduced grass height during the flight season of Fender's blue, but with several costs. We found no change in nectar and a suppression of lupine growth in plots in response to experimental herbicide treatment. Each study site had multiple secondary invaders; the long-term impact of these new invaders is unknown. We suggest that herbicide application results in a net negative effect in the context of Fender's blue habitat restoration. That is, the costs to primary resources for Fender's blue and the influx of secondary invaders may be as problematic as the primary invasion by non-native grasses. Implications for Practice• Herbicide-assisted management tools for restoration should consider potential costs and benefits relative to desired restoration outcomes.• Grass-specific herbicide application reduces the height and "thickness" of the plant community, which is a clear benefit for access by pollinators.• Grass-specific herbicide application allows rapid expansion of invasive forbs.• Practitioners should carefully consider net potential benefits of grass-specific herbicide application with potential costs of invasive forb invasion when developing restoration plans.

show abstract

A systematic review of management efforts on goatgrass (Aegilops spp) dominance

Cited by 15 publications

References 45 publications

The use of spatially patterned methods for vegetation restoration and management across systems

The use of spatially patterned methods for vegetation restoration and management across systems

Pennisetum ciliare: a review of treatment efficacy, competitive traits, and restoration opportunities

Community‐level effects of herbicide‐based restoration treatments: structural benefits but at what cost?

Contact Info

Product

Resources

About