Controls over invasion of Bromus tectorum: The importance of climate, soil, disturbance and seed availability

Bradford, John B.; Lauenroth, William K.

doi:10.1658/1100-9233(2006)17[693:coiobt]2.0.co;2

Cited by 75 publications

(115 citation statements)

References 48 publications

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“…Density-dependent growth, competitive interactions, spatial effects, nutrient drawdown, niche partitioning, herbivory, plant life-history traits and dispersal effects were all ignored. These factors have been found to be important in previous models [14][15][16][17][18] suggesting that incorporating the biomass-explicit consideration of PSFs presented here with these other factors may greatly improve understanding of plant community development [30][31][32]. Multi-factor experiments that assess the relative importance of these different factors will be especially important.…”

Section: Discussionmentioning

confidence: 86%

Plant–soil feedbacks provide an additional explanation for diversity–productivity relationships

2012

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Plant -soil feedbacks (PSFs) have gained attention for their role in plant community dynamics, but their role in productivity has been overlooked. We developed and tested a biomass-specific, multi-species model to examine the role of PSFs in diversity -productivity relationships. The model predicts a negative relationship between PSFs and overyielding: plants with negative PSFs grow more in communities than in monoculture (i.e. overyield), and plants with positive PSFs grow less in communities than in monoculture (i.e. underyield). This effect is predicted to increase with diversity and saturate at low species richness because the proportion of 'self-cultivated' soils rapidly decreases as species are added to a community. Results in a set of glasshouse experiments supported model predictions. We found that PSFs measured in one experiment were negatively correlated with overyielding in three-species plant communities measured in a separate experiment. Furthermore, when parametrized with our experimental PSF data, our model successfully predicted species-level overyielding and underyielding. The model was less effective at predicting community-level overyielding and underyielding, although this appeared to reflect large differences between communities with or without nitrogen-fixing plants. Results provide conceptual and experimental support for the role of PSFs in diversity -productivity relationships.

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Section: Discussionmentioning

confidence: 86%

Plant–soil feedbacks provide an additional explanation for diversity–productivity relationships

2012

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“…More specifically, the hotter-drier, winter-rainfall dominated, Mesic/Aridic and Frigid/Aridic regimes are associated with lower resilience/resistance, whereas the Cryic, Frigid/Ustic, and Frigid/Xeric regimes are associated with higher resilience/resistance (appendix 6) others, 2014a, 2014b). Winter rainfall regimes (that is, Aridic) generally are negatively associated with resistance because non-native annual grasses are well adapted to Mediterranean climatic conditions (Bradford and Lauenroth, 2006;Bradley, 2009). In contrast, summer rainfall regimes (that is, Ustic) generally are positively associated with resistance because they facilitate growth of perennial grasses that help to competitively exclude non-native annual grasses.…”

Section: Soil Temperature and Moisture Regimes As Indicators Of Resilmentioning

confidence: 99%

“…Thus, we feel this threats assessment is a fairly robust summary of the overall implications of the fire patterns reported in this study. Meyer and others, 2001;Bradford and Lauenroth, 2006;Chambers and others, 2007Chambers and others, , 2014aChambers and others, , 2014band Bradley, 2009] Fire data are typically available in point occurrence, burn severity, and fire perimeter formats. Point occurrence data include various attributes included in fire agency reports (size, cause, dates, etc.…”

Section: Fire Threats Assessment For Greater Sage-grouse Habitatmentioning

confidence: 99%

Fire patterns in the range of the greater sage-grouse, 1984-2013 - Implications for conservation and management

Brooks¹,

Matchett²,

Shinneman³

et al. 2015

Open-File Report

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“…Since 1990, fires have become more frequent in the Wyoming Basin and the Silver Sagebrush floristic provinces of Wyoming and Montana (Miller and others, 2011;however, see Baker, 2013), and Mealor and others (2013) have documented annual grass dominance and risk within Wyoming. The seasonality of precipitation and relative dominance of warm and cool season plants have influenced both annual grass invasion and fire regimes in these areas (Bradford and Lauenroth, 2006;Bradley, 2009). As science provides more detail regarding similarities and differences between the Intermountain region and those regions farther east, improvements in this site-level decision tool may be implemented to aid in successful restoration.…”

Section: Introductionmentioning

confidence: 99%

Restoration handbook for sagebrush steppe ecosystems with emphasis on greater sage-grouse habitat—Part 3. Site level restoration decisions

Pyke¹,

Knick²,

Chambers³

et al. 2017

Circular

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod/.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. PrefaceWe organized this series on restoration leading the reader through concepts necessary to make decisions at the landscape and the site level for restoration of sagebrush (Artemisia spp.) steppe ecosystems. Most restoration projects within this ecosystem have historically been implemented to meet only site-specific objectives. Recently, the decision to not list the greater sage-grouse (Centrocercus urophasianus) as a threatened or endangered species was partially dependent on land managers making landscape-and site-level decisions for management actions including actions related to restoring habitat for this focal species. The sagebrush steppe ecosystem is one of the largest and most threatened ecosystems in the U.S. because of fires, invasive species, and human-influenced changes to ecosystem structure and function. The need for restoration far exceeds our means to restore all degraded habitats, but strategic decisions based on sound ecosystem knowledge and landscape principles may allow restoration to keep pace or exceed degradation in key locations to maintain wildlife populations dependent on these ecosystems.This site-level tool is written so it might be used in conjunction with Part 2, landscape-level decision tool of the handbook on restoration of sagebrush steppe ecosystems (Pyke, Knick, and others, 2015) or as a stand-alone tool for any site within the sagebrush steppe. This tool relies on user understanding of a land unit resilience to disturbance and its resistance to invasive plants through soil-climate-plant relationships and it relies heavily on soil temperature and moisture regimes, soil descriptions, and ecological site concepts. These concepts were reviewed in Part 1 of the handbook on restoration of sagebrush steppe ecosystems (Pyke, Chambers, and others, 2015) and are intended as a reference for this site-level restoration decision tool. We encourage users to read and understand these concepts before applying this decision support tool.

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Controls over invasion of Bromus tectorum: The importance of climate, soil, disturbance and seed availability

Cited by 75 publications

References 48 publications

Plant–soil feedbacks provide an additional explanation for diversity–productivity relationships

Plant–soil feedbacks provide an additional explanation for diversity–productivity relationships

Fire patterns in the range of the greater sage-grouse, 1984-2013 - Implications for conservation and management

Restoration handbook for sagebrush steppe ecosystems with emphasis on greater sage-grouse habitat—Part 3. Site level restoration decisions

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