Changes in streamflow in an herbicide‐treated Pinyon‐Juniper Watershed in Arizona

Baker, Malchus B.

doi:10.1029/wr020i011p01639

Cited by 39 publications

(42 citation statements)

References 5 publications

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“…Although the recreational value (hiking, camping, and hunting) of chaparral is less than the higher-elevation vegetation types, its close proximity to major population centers gives it the advantage of providing a much larger recreation resource. Research has also determined that chaparral areas are marginal and intermittent sources of water supply for municipalities if vegetation control is employed to reduce tree densities (Baker 1984;Poff and Neary 2008). Chaparral rangelands are often grazed year-long by livestock and wildlife because evergreen plants common to the shrublands provide a continuous forage supply.…”

Section: Vegetationmentioning

confidence: 99%

Synthesis of Upper Verde River research and monitoring 1993-2008

Neary¹,

Medina²,

Rinne³

2012

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This volume is a state-of-knowledge synthesis of monitoring and research conducted on the Upper Verde River (UVR) of Arizona. It contains information on the history, hydrology, soils, geomorphology, vegetation, and fish fauna of the area that can help land managers and other scientists in successfully conducting ecosystem management and future monitoring and research in this important Southwest river ecosystem. Chapter 1 provides an introduction to the UVR's location, vegetation, climate, soils, and watersheds. A historical and pictorial perspective of the UVR is presented in Chapter 2. The hydrology of the watershed and its current physical condition are covered in Chapters 3 and 4. Geomorphic relationships of the UVR channels are described in Chapter 5. The woody and herbaceous vegetation of the UVR are presented in Chapters 6 and 7. Water quality status and issues of the river are discussed in Chapter 8. The status of the fish fauna and other aquatic organisms are described in Chapter 9. Chapters 10 through 12 present summaries of information resources, research recommendations, a summary of this volume, and conclusions. You may order additional copies of this publication by sending your mailing information in label form through one of the following media. Please specify the publication title and series number. Publishing Services

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Section: Vegetationmentioning

confidence: 99%

Synthesis of Upper Verde River research and monitoring 1993-2008

Neary¹,

Medina²,

Rinne³

2012

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“…Third, Baker (1984) reported on a 14-year study of water yield following Utah juniper control with herbicide treatment on a 363-acre (147-hectare) subbasin in central Arizona. Average annual precipitation at the site was 18 inches (46.3 centimeters).…”

Section: Conversion and Water Yieldmentioning

confidence: 99%

Juniper removal may not increase overall Klamath River Basin water yields

Kuhn¹,

Tate²,

Cao³

et al. 2007

Cal Ag

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“…Increased runoff, interception of rainfall, and increased transpiration of conifers often lower the water table and reduce springflow and streamflow (Baker, 1984;Wilcox, 2002). Conifer encroachment is categorized into three successional phases (Miller et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Thresholds and Time Lags in Effects of Energy Development on Greater Sage‐Grouse Populations

Harju¹,

Dzialak²,

Taylor³

et al. 2010

J Wildl Manag

124

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Rapid expansion of energy development in some portions of the Intermountain West, USA, has prompted concern regarding impacts to declining greater sage‐grouse (Centrocercus urophasianus) populations. We used retrospective analyses of public data to explicitly investigate potential thresholds in the relationship between lek attendance by male greater sage‐grouse, the presence of oil or gas wells near leks (surface occupancy), and landscape‐level density of well pads. We used generalized linear models and generalized estimating equations to analyze data on peak male attendance at 704 leks over 12 years in Wyoming, USA. Within this framework we also tested for time‐lag effects between development activity and changes in lek attendance. Surface occupancy of oil or gas wells adjacent to leks was negatively associated with male lek attendance in 5 of 7 study areas. For example, leks that had ≥ 1 oil or gas well within a 0.4‐km (0.25‐mile) radius encircling the lek had 35–91% fewer attending males than leks with no well within this radius. In 2 of these 5 study areas, negative effects of well surface occupancy were present out to 4.8 km, the largest radius we investigated. Declining lek attendance was also associated with a higher landscape‐level density of well pads; lek attendance at well‐pad densities of 1.54 well pads/km2 (4 well pads/mile2) ranged from 13% to 74% lower than attendance at unimpacted leks (leks with zero well pads within 8.5 km). Lek attendance at a well‐pad density of 3.09 well pads/km2 (8 well pads/mile2) ranged from 77% to 79% lower than attendance at leks with no well pad within 8.5 km. Further, our analysis of time‐lag effects suggested that there is a delay of 2–10 years between activity associated with energy development and its measurable effects on lek attendance. These results offer new information for consideration by land managers on spatial and temporal associations between human activity and lek attendance in sage‐grouse, and suggest that regional variation is an important consideration in refining existing management strategies.

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Changes in streamflow in an herbicide‐treated Pinyon‐Juniper Watershed in Arizona

Cited by 39 publications

References 5 publications

Synthesis of Upper Verde River research and monitoring 1993-2008

Synthesis of Upper Verde River research and monitoring 1993-2008

Juniper removal may not increase overall Klamath River Basin water yields

Thresholds and Time Lags in Effects of Energy Development on Greater Sage‐Grouse Populations

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