Search Results - "Milchunas, Daniel"

Estimating Root Production: Comparison of 11 Methods in Shortgrass Steppe and Review of Biases by Milchunas, Daniel G

“…Estimating root production has been difficult due to multiple potential biases associated with both old and new methods. This shortgrass steppe site is the…”
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Plant trait responses to grazing - a global synthesis by DÍAZ, SANDRA, LAVOREL, SANDRA, McINTYRE, SUE, FALCZUK, VALERIA, CASANOVES, FERNANDO, MILCHUNAS, DANIEL G, SKARPE, CHRISTINA, RUSCH, GRACIELA, STERNBERG, MARCELO, NOY-MEIR, IMANUEL, LANDSBERG, JILL, ZHANG, WEI, CLARK, HARRY, CAMPBELL, BRUCE D

“…Herbivory by domestic and wild ungulates is a major driver of global vegetation dynamics. However, grazing is not considered in dynamic global vegetation…”
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Plant Community Composition After 75 Yr of Sustained Grazing Intensity Treatments in Shortgrass Steppe by Porensky, Lauren M., Derner, Justin D., Augustine, David J., Milchunas, Daniel G.

“…Plant community responses to livestock grazing lack conformity across studies, even those conducted within similar ecosystems. Variability in outcomes can…”
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Effects of ultraviolet radiation on litter decomposition depend on precipitation and litter chemistry in a shortgrass steppe ecosystem by BRANDT, LESLIE A, KING, JENNIFER Y, MILCHUNAS, DANIEL G

“…We examined the effect of altered levels of ultraviolet (UV) radiation (280-400 nm) and different amounts of precipitation on the decomposition rates of litter…”
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Carbon dioxide enrichment alters plant community structure and accelerates shrub growth in the shortgrass steppe by Morgan, Jack A, Milchunas, Daniel G, LeCain, Daniel R, West, Mark, Mosier, Arvin R

“…A hypothesis has been advanced that the incursion of woody plants into world grasslands over the past two centuries has been driven in part by increasing…”
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Functional- and abundance-based mechanisms explain diversity loss due to N fertilization by Suding, K.N, Collins, S.L, Gough, L, Clark, C, Cleland, E.E, Gross, K.L, Milchunas, D.G, Pennings, S

“…Human activities have increased N availability dramatically in terrestrial and aquatic ecosystems. Extensive research demonstrates that local plant species…”
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Herbivore impact on grassland plant diversity depends on habitat productivity and herbivore size by Bakker, Elisabeth S, Ritchie, Mark E, Olff, Han, Milchunas, Daniel G, Knops, Johannes M.H

“…Mammalian herbivores can have pronounced effects on plant diversity but are currently declining in many productive ecosystems through direct extirpation,…”
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Assessing the rate and reversibility of large‐herbivore effects on community composition in a semi‐arid grassland ecosystem by Wilmer, Hailey, Augustine, David J., Derner, Justin D., Milchunas, Daniel G., Pärtel, Meelis

“…Questions What are the rate, reversibility, and degree of symmetry in plant species compositional change in response to the addition and removal of cattle…”
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Sensitivity of productivity to precipitation amount and pattern varies by topographic position in a semiarid grassland by Hoover, David L., Lauenroth, William K., Milchunas, Daniel G., Porensky, Lauren M., Augustine, David J., Derner, Justin D.

“…Aboveground net primary productivity (ANPP) in grasslands is an important integrator of terrestrial ecosystem function, a key driver of global biogeochemical…”
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Grazing effects on plant community succession of early- and mid-seral seeded grassland compared to shortgrass steppe by Milchunas, Daniel G., Vandever, Mark W.

“…Questions: Grazing may speed or slow secondary succession, and the direction may depend on seral stage and relative tolerance of native perennial grasses…”
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Disproportionate effects of non-colonial small herbivores on structure and diversity of grassland dominated by large herbivores by Rebollo, Salvador, Milchunas, Daniel G., Stapp, Paul, Augustine, David J., Derner, Justin D.

“…The response of semiarid grasslands to small, non-colonial herbivores has received little attention, focusing primarily on the effects of granivore assemblages…”
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Prescribed Fire, Grazing, and Herbaceous Plant Production in Shortgrass Steppe by Augustine, David J., Derner, Justin D., Milchunas, Daniel G.

“…We examined the independent and combined effects of prescribed fire and livestock grazing on herbaceous plant production in shortgrass steppe of northeastern…”
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Response of soil microbial biomass and enzyme activities to the transient elevation of carbon dioxide in a semi-arid grassland by Kandeler, Ellen, Mosier, Arvin R., Morgan, Jack A., Milchunas, Daniel G., King, Jennifer Y., Rudolph, Sabine, Tscherko, Dagmar

“…Although elevation of CO 2 has been reported to impact soil microbial functions, little information is available on the spatial and temporal variation of this…”
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Functional traits of graminoids in semi-arid steppes: a test of grazing histories by Adler, P.B, Milchunas, D.G, Lauenroth, W.K, Sala, O.E, Burke, I.C

“…1. Understanding variability in ecosystem response to grazing is essential for improving management. Recent efforts have focused on the role of plant…”
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Grassland vegetation changes and nocturnal global warming by Alward, R.D, Detling, J.K, Milchunas, D.G

“…Global minimum temperatures (T(MIN)) are increasing faster than maximum temperatures, but the ecological consequences of this are largely unexplored long-term…”
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Spatial Redistribution of Nitrogen by Cattle in Semiarid Rangeland by Augustine, David J., Milchunas, Daniel G., Derner, Justin D.

“…Nitrogen (N) availability can strongly influence forage quality and the capacity for semiarid rangelands to respond to increasing atmospheric CO2. Although…”
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Vegetation Responses to Prescribed Burning of Grazed Shortgrass Steppe by Augustine, David J., Milchunas, Daniel G.

“…Over the past century, fire has been widely suppressed in the western Great Plains, in part because of the potential negative effects on forage production for…”
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Do individual plant species show predictable responses to nitrogen addition across multiple experiments? by Pennings, Steven C., Clark, Chris M., Cleland, Elsa E., Collins, Scott L., Gough, Laura, Gross, Katherine L., Milchunas, Daniel G., Suding, Katherine N.

“…A number of experiments have addressed how increases in nitrogen availability increase the productivity and decrease the diversity of plant communities. We…”
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Allelopathic Cover Crop Prior to Seeding Is More Important Than Subsequent Grazing/Mowing in Grassland Establishment by Milchunas, Daniel G, Vandever, Mark W, Ball, Leonard O, Hyberg, Skip

“…The effects of grazing, mowing, and type of cover crop were evaluated in a previous winter wheat–fallow cropland seeded to grassland under the Conservation…”
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Transient elevation of carbon dioxide modifies the microbial community composition in a semi-arid grassland by Kandeler, Ellen, Mosier, Arvin R., Morgan, Jack A., Milchunas, Daniel G., King, Jennifer Y., Rudolph, Sabine, Tscherko, Dagmar

“…Using open-top chambers (OTC) on the shortgrass steppe in northern Colorado, changes of microbial community composition were followed over the latter 3 years…”
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