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1. Vegetation, Hydrologic, and Erosion Responses of Sagebrush Steppe 9 Yr Following Mechanical Tree Removal

Author:
Kormos, Patrick R.,   et al.   ; Williams, C. Jason; Pierson, Frederick B.; Al-Hamdan, Osama Z.; Nouwakpo, Sayjro K.; Weltz, Mark A.;     Show all 6 Authors
Source:
Rangeland ecology & management 2019 v.72 no.1 pp. 47-68
ISSN:
1550-7424
Subject:
Artemisia; Bromus tectorum; Juniperus; Pinus; basins; canopy; energy; grasses; growing season; mastication; mechanical methods; overland flow; perennials; plant cuttings; rainfall simulation; rangelands; runoff; sediments; shrubs; soil; steppes; trees; woodlands; Western United States
Abstract:
... Land managers across the western United States are faced with selecting and applying tree-removal treatments on pinyon (Pinus spp.) and juniper (Juniperus spp.) woodland-encroached sagebrush (Artemisia spp.) rangelands, but current understanding of long-term vegetation and hydrological responses of sagebrush sites to tree removal is inadequate for guiding management. This study applied a suite of ...
Handle:
10113/6369608
DOI:
10.1016/j.rama.2018.07.004

2. Postfire grazing management effects on mesic sagebrush-steppe vegetation: Mid-summer grazing

Author:
Kormos, Patrick R.,   et al.   ; Clark, Patrick E.; Williams, C. Jason; Pierson, Frederick B.;     Show all 4 Authors
Source:
Journal of arid environments 2018 v.151 pp. 104-112
ISSN:
0140-1963
Subject:
Artemisia; altitude; autumn; case studies; cattle; decision making; dry environmental conditions; environmental health; forbs; graminoids; grazing; grazing management; issues and policy; landscapes; livestock production; prescribed burning; public lands; runoff; species diversity; steppes; summer; Western United States
Abstract:
... Postfire livestock grazing management in the higher-elevation, mesic portions of the sagebrush steppe lacks a firm scientific foundation to support decision making. Following a prescribed fire conducted in fall 2002, we evaluated effects of different lengths of rest from mid-summer (July) cattle grazing on postfire ground cover and plant species diversity responses in mesic sagebrush steppe. Treat ...
DOI:
10.1016/j.jaridenv.2017.10.005
CHORUS:
10.1016/j.jaridenv.2017.10.005

3. Effectiveness of prescribed fire to re-establish sagebrush steppe vegetation and ecohydrologic function on woodland-encroached sagebrush rangelands, Great Basin, USA: Part I: Vegetation, hydrology, and erosion responses

Author:
Kormos, Patrick R.,   et al.   ; Williams, C.J.; Pierson, Frederick B.; Nouwakpo, Sayjro K.; Al-Hamdan, Osama Z.; Weltz, Mark A.;     Show all 6 Authors
Source:
Catena 2018 pp. 103477
ISSN:
0341-8162
Subject:
Artemisia; Bromus tectorum; Juniperus; Pinus; basins; canopy; conifers; ecosystems; grasses; growing season; indigenous species; land management; land ownership; overland flow; perennials; plant cuttings; prediction; prescribed burning; private lands; public lands; raindrop impact; rainfall simulation; rangelands; risk; runoff; sediment yield; sediments; shredding; shrubs; soil; soil resources; sowing; steppes; trees; understory; wildfires; woodlands; Southwestern United States
Abstract:
... Pinyon (Pinus spp.) and juniper (Juniperus spp.) woodland encroachment has imperiled a broad ecological domain of the sagebrush steppe (Artemisia spp.) ecosystem in the Great Basin Region, USA. As these conifers increase in dominance on sagebrush rangelands, understory vegetation declines and ecohydrologic function can shift from biotic (vegetation) controlled retention of soil resources to abioti ...
Handle:
10113/6357105
DOI:
10.1016/j.catena.2018.02.027

4. Ecosystem Water Availability in Juniper Versus Sagebrush Snow-Dominated Rangelands☆

Author:
Kormos, Patrick R.,   et al.   ; Marks, Danny; Pierson, Frederick B.; Williams, C. Jason; Hardegree, Stuart P.; Havens, Scott; Hedrick, Andrew; Bates, Jonathan D.; Svejcar, Tony J.;     Show all 9 Authors
Source:
Rangeland ecology & management 2017 v.70 no.1 pp. 116-128
ISSN:
1551-5028
Subject:
Artemisia; Centrocercus urophasianus; Juniperus occidentalis; ecosystems; habitat conservation; landscapes; melting; meteorological data; models; plant communities; rain; rangelands; snow; snowmelt; soil water; steppes; stream flow; surface water; watersheds; wildlife; wildlife habitats; Western United States
Abstract:
... Western Juniper (Juniperus occidentalis Hook.) has greatly expanded in the past 150+years and now dominates over 3.6 million ha of rangeland in the Intermountain Western United States. The impacts of juniper encroachment on critical ecohydrological relationships among snowdistribution, water budgets, plant community transitions, and habitat requirements for wildlife, such as the greater sage grous ...

5. Ecosystem Water Availability in Juniper versus Sagebrush Snow-Dominated Rangelands

Author:
Kormos, Patrick R.,   et al.   ; Marks, Danny; Pierson, Frederick B.; Williams, C. Jason; Hardegree, Stuart P.; Havens, Scott; Hedrick, Andrew; Bates, Jonathan D.; Svejcar, Tony J.;     Show all 9 Authors
Source:
Rangeland ecology & management 2017 v.70 no.1 pp. 116-128
ISSN:
1550-7424
Subject:
Artemisia; Centrocercus urophasianus; Juniperus occidentalis; ecosystems; habitat conservation; landscapes; melting; meteorological data; models; plant communities; rangelands; snow; snowmelt; soil water; steppes; stream flow; surface water; watersheds; wildlife; wildlife habitats; Western United States
Abstract:
... Western Juniper (Juniperus occidentalis Hook.) has greatly expanded in the past 150+ years and now dominates over 3.6 million ha of rangeland in the Intermountain Western United States. The impacts of juniper encroachment on critical ecohydrological relationships among snow distribution, water budgets, plant community transitions, and habitat requirements for wildlife, such as the greater sage gro ...
Handle:
10113/5245042
DOI:
10.1016/j.rama.2016.05.003

6. Ecohydrologic response and recovery of a semi-arid shrubland over a five year period following burning

Author:
Kormos, Patrick R.,   et al.   ; Williams, C. Jason; Pierson, Frederick B.; Al-Hamdan, Osama Z.; Hardegree, Stuart P.; Clark, Patrick E.;     Show all 6 Authors
Source:
Catena 2016 v.144 pp. 163-176
ISSN:
0341-8162
Subject:
basins; burning; erodibility; fine-textured soils; ground vegetation; growing season; overland flow; rain; raindrop impact; rainfall simulation; rangelands; runoff; sediments; shrublands; shrubs; soil heterogeneity; soil water; temporal variation; water erosion; water repellent soils; wildfires; United States
Abstract:
... Increasing trends in wildfire activity on semi-arid rangelands necessitate advancement in understanding of fire impacts on vegetation, soils, and runoff and erosion processes. This study used artificially applied rainfall and concentrated overland flow experiments to evaluate the ecohydrologic response and recovery of a semi-arid shrubland in the Great Basin Region, USA, following fire. Rainfall e ...
Handle:
10113/5261687
DOI:
10.1016/j.catena.2016.05.006

7. Short-Term Impacts of Tree Removal on Runoff and Erosion From Pinyon- and Juniper-Dominated Sagebrush Hillslopes

Author:
Kormos, Patrick R.,   et al.   ; Pierson, Frederick B.; Williams, C. Jason; Al-Hamdan, Osama Z.; Hardegree, Stuart P.; Clark, Patrick E.;     Show all 6 Authors
Source:
Rangeland ecology & management 2015 v.68 no.5 pp. 408-422
ISSN:
1550-7424
Subject:
Artemisia; burning; cutting; erodibility; ground vegetation; hills; mulches; overland flow; pinyon-juniper; rain; rangelands; risk; runoff; trees; water erosion; woodlands
Abstract:
... Tree removal is often applied to woodland-encroached rangelands to restore vegetation and improve hydrologic function, but knowledge is limited regarding effects of tree removal on hydrologic response. This study used artificial rainfall and overland flow experiments (9–13 m2) and measures of vegetation and ground cover to investigate short-term (1–2 yr) responses to tree removal at two woodland-e ...
DOI:
10.1016/j.rama.2015.07.004

8. Bedrock infiltration estimates from a catchment water storage-based modeling approach in the rain snow transition zone

Author:
Kormos, Patrick R.,   et al.   ; McNamara, James P.; Seyfried, Mark S.; Marshall, Hans Peter; Marks, Danny; Flores, Alejandro N.;     Show all 6 Authors
Source:
Journal of hydrology 2015 v.525 pp. 231-248
ISSN:
0022-1694
Subject:
aquifers; balance studies; bedrock; drainage; drainage water; managers; models; rain; snow; soil water; soil water storage; stream flow; streams; time series analysis; watersheds; Idaho
Abstract:
... Estimates of bedrock infiltration from mountain catchments in the western U.S. are essential to water resource managers because they provide an estimate of mountain block recharge to regional aquifers. On smaller scales, bedrock infiltration is an important term in water mass balance studies, which attempt to estimate hydrologic states and fluxes in watersheds with fractured or transmissive bedroc ...
DOI:
10.1016/j.jhydrol.2015.03.032

9. Snow distribution, melt and surface water inputs to the soil in the mountain rain–snow transition zone

Author:
Kormos, Patrick R.,   et al.   ; Marks, Danny; McNamara, James P.; Marshall, H.P.; Winstral, Adam; Flores, Alejandro N.;     Show all 6 Authors
Source:
Journal of hydrology 2014 v.519 pp. 190-204
ISSN:
0022-1694
Subject:
basins; biogeochemical cycles; energy flow; groundwater recharge; hills; melting; models; mountain soils; rain; snow; snowmelt; snowpack; soil water; spring; stream flow; streams; surface water; time series analysis; watersheds; Idaho
Abstract:
... The timing, magnitude, and spatial distribution of snow cover and the resulting surface water inputs (SWI) are simulated at a small catchment located in the rain–snow transition zone of southwest Idaho, USA. A physically based snow model is run on this 1.5ha study catchment, which has an elevation range of 1600–1645masl. The catchment is divided into relatively steep (mean slope angle of 21degrees ...
DOI:
10.1016/j.jhydrol.2014.06.051

10. Short-Term Effects of Tree Removal on Infiltration, Runoff, and Erosion in Woodland-Encroached Sagebrush Steppe

Author:
Kormos, Patrick R.,   et al.   ; Pierson, Frederick B.; Williams, C. Jason; Al-Hamdan, Osama Z.;     Show all 4 Authors
Source:
Rangeland ecology & management 2014 v.67 no.5 pp. 522-538
ISSN:
1550-7424
Subject:
Artemisia; aggregate stability; ecosystems; erodibility; managers; mastication; prescribed burning; rain; rainfall simulation; runoff; shrubs; soil depth; soil erosion; soil water; steppes; trees; water repellent soils; woodlands
Abstract:
... Land owners and managers across the western United States are increasingly searching for methods to evaluate and mitigate the effects of woodland encroachment on sagebrush steppe ecosystems. We used small-plot scale (0.5 m2) rainfall simulations and measures of vegetation, ground cover, and soils to investigate woodland response to tree removal (prescribed fire and mastication) at two late-success ...
Handle:
10113/1300337
DOI:
10.2111/REM-D-13-00033.1

11. Hydrologic and Erosion Responses of Sagebrush Steppe Following Juniper Encroachment, Wildfire, and Tree Cutting

Author:
Kormos, Patrick R.,   et al.   ; Pierson, Frederick B.; Jason Williams, C.; Hardegree, Stuart P.; Clark, Patrick E.; Al-Hamdan, Osama Z.;     Show all 6 Authors
Source:
Rangeland ecology & management 2013 v.66 no.3 pp. 274-289
ISSN:
1550-7424
Subject:
Artemisia; Juniperus occidentalis; basins; burning; canopy; cutting; environmental impact; rain; rangelands; runoff; soil; steppes; trees; understory; wildfires; woodlands
Abstract:
... Extensive woodland expansion in the Great Basin has generated concern regarding ecological impacts of tree encroachment on sagebrush rangelands and strategies for restoring sagebrush steppe. This study used rainfall (0.5m2 and 13m2 scales) and concentrated flow simulations and measures of vegetation, ground cover, and soils to investigate hydrologic and erosion impacts of western juniper (Juniperu ...
Handle:
10113/1300256
DOI:
10.2111/REM-D-12-00104.1

12. Concentrated flow erodibility for physically based erosion models: Temporal variability in disturbed and undisturbed rangelands

Author:
Kormos, Patrick R.,   et al.   ; Al-Hamdan, Osama Z.; Pierson, Frederick B.; Nearing, Mark A.; Williams, C. Jason; Stone, Jeffry J.; Boll, Jan; Weltz, Mark A.;     Show all 8 Authors
Source:
Water Resources Research 2012 v.48 no.7
ISSN:
0043-1397
Subject:
Artemisia; burning; equations; erodibility; fires; overland flow; prediction; rangelands; runoff; sediments; soil erosion models; soil texture; steppes; streams; temporal variation; trees; vegetation cover
Abstract:
... Current physically based overland flow erosion models for rangeland application do not separate disturbed and undisturbed conditions in modeling concentrated flow erosion. In this study, concentrated flow simulations on disturbed and undisturbed rangelands were used to estimate the erodibility and to evaluate the performance of linear and power law equations that describe the relationship between ...
Handle:
10113/5695438
DOI:
10.1029/2011WR011464

13. Hydrologic Vulnerability of Sagebrush Steppe Following Pinyon and Juniper Encroachment

Author:
Kormos, Patrick R.,   et al.   ; Pierson, Frederick B.; Williams, C. Jason; Hardegree, Stuart P.; Clark, Patrick E.; Rau, Benjamin M.;     Show all 6 Authors
Source:
Rangeland ecology & management 2010 v.63 no.6 pp. 614
ISSN:
1551-5028
Subject:
steppes; rangelands; woody weeds; invasive species; vegetation structure; ecological invasion; Juniperus; Pinus; rainfall simulation; infiltration (hydrology); runoff; water erosion; raindrop impact; canopy; spatial variation; vegetation cover; water repellent soils; water flow; erodibility; plant litter; rocks; sediment yield; Utah; Nevada; Intermountain West region
Abstract:
... Woodland encroachment on United States rangelands has altered the structure and function of shrub steppe ecosystems. The potential community structure is one where trees dominate, shrub and herbaceous species decline, and rock cover and bare soil area increase and become more interconnected. Research from the Desert Southwest United States has demonstrated areas under tree canopies effectively sto ...
Handle:
10113/48849
DOI:
10.2111/REM-D-09-00148.1