Western Geographic Science Center

Publications

Filter Total Items: 385
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Year Published: 2021

Sediment mobility and river corridor assessment for a 140-kilometer segment of the main-stem Klamath River below Iron Gate Dam, California

This river corridor assessment documents sediment mobility and river response to flood disturbance along a 140-kilometer segment of the main-stem Klamath River below Iron Gate Dam, California. Field and remote sensing methods were used to assess fundamental indicators of active sediment transport and river response to a combination of natural...

Curtis, Jennifer; Poitras, Travis; Bond, Sandra; Byrd, Kristin
Curtis, J., Poitras, T., Bond, S., and Byrd, K., 2021, Sediment mobility and river corridor assessment for a 140-kilometer segment of the main-stem Klamath River below Iron Gate Dam, California: U.S. Geological Survey Open-File Report 2020–1141, 38 p., https://doi.org/10.3133/ofr20201141.

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Year Published: 2020

Contemporary fire regimes provide a critical perspective on restoration needs in the Mexico-United States borderlands

The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool, but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks....

Villarreal, Miguel L.; Iniguez, Jose M.; Flesch, Aaron D.; Sanderlin, Jamie S.; Cortés Montaño, Citlali; Conrad, Caroline Rose; Haire, Sandra L.

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Year Published: 2020

Quantifying drought’s influence on moist soil seed vegetation in California’s Central Valley through remote sensing

Across the Central Valley of California, millions of wintering waterfowl rely on moist soil seed (MSS) plants that grow in managed seasonal wetlands as a critical source of food. Estimates of MSS plant production are used to set waterfowl habitat targets yet this information is not well known. We created the first Central Valley-wide time series...

Byrd, Kristin B.; Lorenz, Austen; Anderson, James; Wallace, Cynthia; Moore-O'Leary, Kara; Isola, Jennifer; Ortega, Ricardo; Reiter, Matt

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Year Published: 2020

Integrating climate change considerations into natural resource planning—An implementation guide

Executive SummaryClimate change vulnerability assessments and associated adaptation strategies and actions connect existing climate science with possible effects on natural resources and highlight potential responses. However, these assessments, which are commonly generated for large regional areas, suggest management options in general terms...

Kershner, Jessi; Woodward, Andrea; Torregrosa, Alicia
Kershner, J., Woodward, A., and Torregrosa, A., 2020, Integrating climate change considerations into natural resource planning—An implementation guide: U.S. Geological Survey Techniques and Methods, book 6, chap. C2, 58 p., https://doi.org/10.3133/tm6C2.

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Year Published: 2020

Impacts of grade control structure installations on hydrology and sediment transport as an adaptive management strategy

The goal of this research was to examine the impacts of Grade Control Structure (GCS) installations at the Heard Scout Pueblo (HSP) study site in the City of Phoenix, Arizona, USA. The study site is around a high-use trail system and is comprised of eroded and incised channels that conduct high flows and associated sediments into a residential...

Tosline, Deborah; Norman, Laura M.; Greimann, Blair P.; Cederberg, Jay; Huang, Victor; Ruddell, Benjamin L.

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Year Published: 2020

Ultra‐high‐resolution mapping of biocrusts with Unmanned Aerial Systems

Biological soil crusts (biocrusts) occur in drylands globally where they support ecosystem functioning by increasing soil stability, reducing dust emissions and modifying soil resource availability (e.g. water, nutrients). Determining biocrust condition and extent across landscapes continues to present considerable challenges to scientists and...

Havrilla, Caroline; Villarreal, Miguel L.; DiBiase, Jacob; Duniway, Michael C.; Barger, Nichole
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Year Published: 2020

Variations in community evacuation potential related to average return periods in probabilistic tsunami hazard analysis

Tsunami risk management requires strategies that can address multiple sources with different recurrence intervals, wave-arrival times, and inundation extents. Probabilistic tsunami hazard analysis (PTHA) provides a structured way to integrate multiple sources, including the uncertainties due to the natural variability and limited knowledge of...

Wood, Nathan J.; Peters, Jeff; Wilson, Rick I.; Sherba, Jason T.; Henry, Kevin

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Year Published: 2020

Land-use change and future water demand in California’s central coast

Understanding future land-use related water demand is important for planners and resource managers in identifying potential shortages and crafting mitigation strategies. This is especially the case for regions dependent on limited local groundwater supplies. For the groundwater dependent Central Coast of California, we developed two scenarios of...

Wilson, Tamara; Van Schmidt, N.; Langridge, Ruth

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Year Published: 2020

Influence of demand and capacity in transportation simulations of short-notice, distant-tsunami evacuations

Distant tsunamis require short-notice evacuations in coastal communities to minimize threats to life safety. Given the available time to evacuate and potential distances out of hazard zones, coastal transportation planners and emergency managers can expect large proportions of populations to evacuate using vehicles. A community-wide, short-notice...

Wood, Nathan J.; Henry, Kevin; Peters, Jeff

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Year Published: 2020

Shaping land use change and ecosystem restoration in a water-stressed agricultural landscape to achieve multiple benefits

Irrigated agriculture has grown rapidly over the last 50 years, helping food production keep pace with population growth, but also leading to significant habitat and biodiversity loss globally. Now, in some regions, land degradation and overtaxed water resources mean historical production levels may need to be reduced. We demonstrate how...

Bryant, Benjamin P.; Kelsey, T. Rodd; Vogl, Adrian L.; Wolny, Stacie A.; MacEwan, Duncan J.; Selmants, Paul; Biswas, Tanushree; Butterfield, H. Scott

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Year Published: 2020

Solar and sensor geometry, not vegetation response, drive satellite NDVI phenology in widespread ecosystems of the western United States

Satellite-derived phenology metrics are valuable tools for understanding broad-scale patterns and changes in vegetated landscapes over time. However, the extraction and interpretation of phenology in ecosystems with subtle growth dynamics can be challenging. US National Park Service monitoring of evergreen pinyon-juniper ecosystems in the western...

Norris, Jodi R.; Walker, Jessica J.

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Year Published: 2020

Ecosystem services of riparian restoration: A review of rock detention structures in the Madrean Archipelago Ecoregion

In northwestern Mexico and the southwestern United States, limited water supplies and fragile landscapes jeopardize world-renowned biological diversity. Simple rock detention structures have been used to manage agricultural water for over a thousand years and are now being installed to restore ecohydrological functionality but with little...

Norman, Laura M.