Western Geographic Science Center

Publications

Filter Total Items: 391
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Year Published: 2021

Editorial: Combining the science and practice of restoration ecology-Case studies of a grassroots binational restoration collaborative in the Madrean Archipelago Ecoregion (2014- 2019)

The Sky Island Restoration Collaborative (SIRC) is a growing partnership between government agencies, nonprofit organizations, and private landowners in southeast Arizona, the United States, and northern Sonora, Mexico. Starting in 2014 as an experiment to cultivate restoration efforts by connecting people across vocations and nations, SIRC has...

Norman, Laura M.; Pulliam, H. Ronald; Girard, Michele; Buckley, Steven M.; Misztal, Louise W.; Seibert, David; Campbell, Carianne; Callegary, James B.; Tosline, Deborah J.; Wilson, Natalie R.; Hodges, David; Conn, Jeff; Austin-Clark, A. Valer

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Year Published: 2021

Remote sensing analysis to quantify change in woodland canopy cover on the San Carlos Apache Reservation, Arizona (1935 vs. 2017)

Since the late 1800s, pinyon–juniper woodland across the western U.S. has increased in density and areal extent and encroached into former grassland areas. The San Carlos Apache Tribe wants to gain qualitative and quantitative information on the historical conditions of their tribal woodlands to use as a baseline for restoration efforts. At the...

Middleton, Barry R.; Norman, Laura M.

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Year Published: 2021

Editorial: Science and applications of coastal remote sensing

No abstract available.

Turpie, Kevin R.; Ackleson, Steven G.; Byrd, Kristin B.; Moisan, Tiffany K.

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Year Published: 2021

Augmented normalized difference water index for improved monitoring of surface water

We present a comprehensive critical review of well-established satellite remote sensing water indices and offer a novel, robust Augmented Normalized Difference Water Index (ANDWI). ANDWI employs an expanded set of spectral bands, RGB, NIR, and SWIR1-2, to maximize the contrast between water and non-water pixels. Further, we...

Rad, Arash Modaresi; Kreitler, Jason R.; Sadegh, Mojitaba

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Year Published: 2021

Estimating blue carbon sequestration under coastal management scenarios

Restoring and protecting “blue carbon” ecosystems - mangrove forests, tidal marshes, and seagrass meadows - are actions considered for increasing global carbon sequestration. To improve understanding of which management actions produce the greatest gains in sequestration, we used a spatially explicit model to compare...

Moritsch, Monica Mei Jeen; Young, Mary Alida; Carnell, Paul; Macreadie, Peter I; Lovelock, Catherine E.; Nicholson, Emily; Raimondi, Peter T.; Wedding, Lisa M.; Ierodiaconou, Daniel

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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