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- Population dynamics (2)
- Centrocercus urophasianus (1)
- Coexistence (1)
- Competition (1)
- Disturbance (1)
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- Douglas-fir beetle (1)
- Dryland agriculture (1)
- Facilitation (1)
- Forest health (1)
- Greater sage-grouse (1)
- Integral projection model (1)
- Interior Douglas-fir forest (1)
- Land use (1)
- Livestock grazing (1)
- Mixed-severity fire (1)
- Precipitation manipulation (1)
- Precipitation variability (1)
- Removal experiment (1)
- Sagebrush steppe (1)
- Scale (1)
- Western spruce budworm (1)
- Winter wheat (1)
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Winter Wheat Resistant To Increases In Rain And Snow Intensity In A Semi-Arid System, Martin C. Holdrege, Karen H. Beard, Andrew Kulmatiski
Winter Wheat Resistant To Increases In Rain And Snow Intensity In A Semi-Arid System, Martin C. Holdrege, Karen H. Beard, Andrew Kulmatiski
Wildland Resources Faculty Publications
As the atmosphere warms, precipitation events have been predicted and observed to become fewer and larger. Changes in precipitation patterns can have large effects on dryland agricultural production, but experimental tests on the effects of changing precipitation intensity are limited. Over 3 years, we tested the effects of increased precipitation intensity on winter wheat (Triticum aestivum L.; Promontory variety) in a temperate dryland agricultural system that was on a rotation of crop and fallow years. We used 11 (2.1 × 2.5 m) shelters to collect and redeposit rain and snow as larger, more intense events. Total precipitation was the …
Weak Interspecific Interactions In A Sagebrush Steppe? Conflicting Evidence From Observations And Experiments, Peter B. Adler, Andrew R. Kleinhesselink, Giles Hooker, Joshua B. Taylor, Brittany J. Teller, Stephen P. Ellner
Weak Interspecific Interactions In A Sagebrush Steppe? Conflicting Evidence From Observations And Experiments, Peter B. Adler, Andrew R. Kleinhesselink, Giles Hooker, Joshua B. Taylor, Brittany J. Teller, Stephen P. Ellner
Wildland Resources Faculty Publications
Stable coexistence requires intraspecific limitations to be stronger than interspecific limitations. The greater the difference between intra‐ and interspecific limitations, the more stable the coexistence, and the weaker the competitive release any species should experience following removal of competitors. We conducted a removal experiment to test whether a previously estimated model, showing surprisingly weak interspecific competition for four dominant species in a sagebrush steppe, accurately predicts competitive release. Our treatments were (1) removal of all perennial grasses and (2) removal of the dominant shrub, Artemisia tripartita. We regressed survival, growth, and recruitment on the locations, sizes, and species identities …
Patterns In Greater Sage-Grouse Population Dynamics Correspond With Public Grazing Records At Broad Scales, Adrian P. Monroe, Cameron L. Aldridge, Timothy J. Assal, Kari E. Veblen, David A. Pyke, Michael L. Casazza
Patterns In Greater Sage-Grouse Population Dynamics Correspond With Public Grazing Records At Broad Scales, Adrian P. Monroe, Cameron L. Aldridge, Timothy J. Assal, Kari E. Veblen, David A. Pyke, Michael L. Casazza
Wildland Resources Faculty Publications
Human land use, such as livestock grazing, can have profound yet varied effects on wildlife interacting within common ecosystems, yet our understanding of land-use effects is often generalized from short-term, local studies that may not correspond with trends at broader scales. Here we used public land records to characterize livestock grazing across Wyoming, USA, and we used Greater Sage-grouse (Centrocercus urophasianus) as a model organism to evaluate responses to livestock management. With annual counts of male Sage-grouse from 743 leks (breeding display sites) during 2004-2014, we modeled population trends in response to grazing level (represented by a relative grazing index) …
Disturbance Agents And Their Associated Effects On The Health Of Interior Douglas-Fir Forests In The Central Rocky Mountains, Andrew D. Giunta, Michael J. Jenkins, Elizabeth G. Hebertson, Allen S. Munson
Disturbance Agents And Their Associated Effects On The Health Of Interior Douglas-Fir Forests In The Central Rocky Mountains, Andrew D. Giunta, Michael J. Jenkins, Elizabeth G. Hebertson, Allen S. Munson
Wildland Resources Faculty Publications
Interior Douglas-fir is a prevalent forest type throughout the central Rocky Mountains. Past management actions, specifically fire suppression, have led to an expansion of this forest type. Although Douglas-fir forests cover a broad geographic range, few studies have described the interactive effects of various disturbance agents on forest health conditions. In this paper, we review pertinent literature describing the roles, linkages, and mechanisms by which disturbances, including insect outbreaks, pathogens, fire, and other abiotic factors, affect the development, structure, and distribution of interior montane forests primarily comprised of Douglas-fir. We also discuss how these effects may influence important resource values …