Soil morphology and organic matter dynamics under cheatgrass and sagebrush-steppe plant communities

Norton, Jay B.; Monaco, Thomas A.; Norton, Jeanette M.; Johnson, Douglas A.; Jones, Thomas A.

doi:10.1016/s0140-1963(03)00104-6

Cited by 101 publications

(96 citation statements)

References 26 publications

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“…Other examples include the conversion of sagebrush shrublands in the northwestern United States to stands of almost exclusively cheatgrass (Bromus tectorum L.) (Norton et al 2004); and the replacement of native by annual grasses in the savannas of Australia (Ash et al 1994). In the 2 latter cases, the conversion is reinforced and maintained by frequent fires.…”

Section: What Are the Ecohydrological Consequences Of Invasion By Exomentioning

confidence: 99%

“…For upland rangelands, several studies have examined the implications of such conversions for nutrient cycling (Evans et al 2001;Blank and Young 2004;Norton et al 2004), and considerable research has been done on the effects of exotic plant species on native vegetation (Sheley and Petroff 1999). In addition, recent work has examined the relationship between exotic grasses and rainfall pulses (Huxman et al 2004;Clarke et al 2005).…”

Section: What Are the Ecohydrological Consequences Of Invasion By Exomentioning

confidence: 99%

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Emerging Issues in Rangeland Ecohydrology: Vegetation Change and the Water Cycle

Wilcox

Thurow

2006

REM

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Rangelands have undergone-and continue to undergo-rapid change in response to changing land use and climate. A research priority in the emerging science of ecohydrology is an improved understanding of the implications of vegetation change for the water cycle. This paper describes some of the interactions between vegetation and water on rangelands and poses 3 questions that represent high-priority, emerging issues: 1) How do changes in woody plants affect water yield? 2) What are the ecohydrological consequences of invasion by exotic plants? 3) What ecohydrological feedbacks play a role in rangeland degradation processes? To effectively address these questions, we must expand our knowledge of hydrological connectivity and how it changes with scale, accurately identify ''hydrologically sensitive'' areas on the landscape, carry out detailed studies to learn where plants are accessing water, and investigate feedback loops between vegetation and the water cycle.

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Section: What Are the Ecohydrological Consequences Of Invasion By Exomentioning

confidence: 99%

Section: What Are the Ecohydrological Consequences Of Invasion By Exomentioning

confidence: 99%

Emerging Issues in Rangeland Ecohydrology: Vegetation Change and the Water Cycle

Wilcox

Thurow

2006

REM

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“…Total soil nitrogen and extractable nitrogen has been found to increase in several studies (Belnap et al, 2005;Blank, 2008;Bolton et al, 1990Bolton et al, , 1993Booth et al, 2003;Hooker et al, 2008;Norton et al, 2004;Stark & Norton, 2015), although Svejcar and Sheley (2001) observed no change. Looking at the individual nitrogen ions NH 4 + and NO 3 -, cheatgrass invaded sites ranged from increased soil concentrations to no change to decreased amounts (Adair and Burke, 2010;Belnap et al, 2005;Blank, 2008;Booth et al, 2003;Evans et al, 2001;Hooker et al, 2008;Norton et al, 2004;Stark & Norton, 2015;Svejcar & Sheley, 2001). The observed variability can be due to different sampling methods and sampling dates.…”

Section: Plant-soil Microbial Community Interactionsmentioning

confidence: 97%

“…Belnap and Philips (2001) have observed an increase in aboveground plant litter by a factor of 2.2 to 2.8 in semi-arid grasslands invaded by B. tectorum. Although nutrient input from leaf litter composition is considered to be negligible in arid and semi-arid environments (Austin & Vivanco, 2006;Collins et al, 2008) cheatgrass provides a large root mass that is turned over on an annual basis (Belnap & Phillips, 2001;Norton et al, 2004). Decomposable organic matter in the form of cheatgrass roots provides soil microbial communities with .…”

Section: Invasion Success Of Bromus Tectorum and Below-ground Interacmentioning

confidence: 99%

“…Often physiological properties and the life history of B. tectorum and its interactions with soil abiotic components are used to explain its success as a persistent invader (Belnap & Phillips, 2001;Hulbert, 1955;Norton et al, 2004;Thill et al, 1984). Furthermore, an increase in the fire cycle induced by cheatgrass has been implicated in supporting invasion (D'Antonio & Vitousek, 1992).…”

Section: Introductionmentioning

confidence: 99%

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Cheatgrass Invasion - The Below-Ground Connection

Reitstetter¹,

Larry

2017

JEE

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Plant-soil microbial feedback loops play an important role in the establishment and development of plant communities. Microbial soil communities, including pathogens, plant-growth-promoting rhizobacteria and their reciprocal interactions, can influence plant health and nutrient cycling in many ways. We are proposing a model that accounts for cheatgrass (Bromus tectorum) invasion success and long-term persistence in both disturbed and undisturbed sites. In this model cheatgrass alters soil microbial communities that favor nitrifying microorganisms, resulting in elevated NO 3 -levels. Increased NO 3 -levels, coupled with B. tectorum life history and climatic and edaphic conditions in the semi-arid western U.S., result in long-term persistence of this invasive annual. In ecosystems that lack major precipitation during the growth season, B. tectorum induced shifts in the nitrifier community result in accumulation of plant available nitrogen during the summer when native perennials are primarily dormant. Increased NO 3 -levels can be efficiently utilized by cheatgrass ahead of native perennials during fall and winter. Restoration and management efforts must be guided by a thorough understanding of soil microbe-cheatgrass interactions to avoid nutrient flushes resulting from freeze-thaw and wet-dry cycles that benefit this invasive grass.

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Productivity, stability, and resilience of cool‐season perennial grasses used for rangeland revegetation

Robins

Waldron

Jensen

2020

Agrosystems Geosci & Env

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An analysis of biomass and ground cover data collected from six rangeland sites in the Intermountain and Northern Great Plains areas of the United States from 2000 to 2004 was undertaken to characterize the productivity, stability, and resilience of coolseason perennial grass species. Among the 13 included species, and the 48 cultivars, intermediate wheatgrass [Thinpyrum intermedium (Host) Barkworth & D.R. Dewey], tall wheatgrass [Thinpyrum elongatum (Host) D.R. Dewey], and to a lesser extent crested wheatgrass [Agropryon cristatum (L.) Gaertn. and A. desertorum (Fisch. ex Link) Schult.] possessed the greatest biomass productivity and ground cover. Basin wildrye [Leymus cinereus (Scribn. & Merr.) Á. Löve], thickspike wheatgrass [Elymus lanceolatus (Scribn. & J.G. Sm.) Gould], and bluebunch wheatgrass [Pseudoroegne-ria spicata (Pursh) Á. Löve] were least productive and stable. There were no differences among species or cultivars for biomass resilience and differences for ground cover resilience were limited. Overall, these three statistics provide an interesting comparison among rangeland species, but more long-term datasets are necessary for greater inferences and more definitive conclusions.

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Soil morphology and organic matter dynamics under cheatgrass and sagebrush-steppe plant communities

Cited by 101 publications

References 26 publications

Emerging Issues in Rangeland Ecohydrology: Vegetation Change and the Water Cycle

Emerging Issues in Rangeland Ecohydrology: Vegetation Change and the Water Cycle

Cheatgrass Invasion - The Below-Ground Connection

Productivity, stability, and resilience of cool‐season perennial grasses used for rangeland revegetation

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