Southwest Biological Science Center

Publications

Filter Total Items: 1,009
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Year Published: 2021

U.S. Geological Survey landscape science strategy 2020–2030

Across our Nation, multiple Federal, State, Tribal, and local governments are working with stakeholders and landowners to restore, conserve, and manage lands and resources to benefit fish, wildlife, and people. One of the largest Federal efforts is led by the U.S. Department of the Interior (DOI), with multiple DOI agencies working to conserve and...

Jenni, Karen E.; Carter, Sarah K.; Aumen, Nicholas G.; Bowen, Zachary H.; Bradford, John B.; Chotkowski, Michael A.; Hsu, Leslie; Murdoch, Peter S.; Phillips, Scott W.; Pope, Kevin L.; Schuster, Rudy; Steinkamp, Melanie J.; Weltzin, Jake; Xian, George Z.
Jenni, K.E., Carter, S.K., Aumen, N.G., Bowen, Z.H., Bradford, J.B., Chotkowski, M.A., Hsu, L., Murdoch, P.S., Phillips, S.W., Pope, K.L., Schuster, R., Steinkamp, M.J., Weltzin, J., and Xian, G.Z., 2021, U.S. Geological Survey landscape science strategy 2020–2030: U.S. Geological Survey Circular 1484, 26 p., https://doi.org/10.3133/cir1484.

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Year Published: 2021

Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6—Structure from motion workflow documentation

IntroductionStructure from motion (SFM) has become an integral technique in coastal change assessment; the U.S. Geological Survey (USGS) used Agisoft Metashape Professional Edition photogrammetry software to develop a workflow that processes coastline aerial imagery collected in response to storms since Hurricane Florence in 2018. This report...

Over, Jin-Si R.; Ritchie, Andrew C.; Kranenburg, Christine J.; Brown, Jenna A.; Buscombe, Daniel D.; Noble, Tom; Sherwood, Christopher R.; Warrick, Jonathan A.; Wernette, Phillipe A.
Over, J.R., Ritchie, A.C., Kranenburg, C.J., Brown, J.A., Buscombe, D., Noble, T., Sherwood, C.R., Warrick, J.A., and Wernette, P.A., 2021, Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6—Structure from motion workflow documentation: U.S. Geological Survey Open-File Report 2021–1039, 46 p., https://doi.org/10.3133/ofr20211039.

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Year Published: 2021

Analysis of Escherichia coli, total recoverable iron, and dissolved selenium concentrations, loading, and identifying data gaps for selected 303(d) listed streams, Grand Valley, western Colorado, 1980–2018

Tributaries to the Colorado River in the Grand Valley in western Colorado (segment COLCLC13b) have been placed on the State of Colorado 303(d) list as impaired for Escherichia coli (E. coli), total recoverable iron, and dissolved selenium. The Colorado Department of Public Health and Environment Water Quality Control Division is required to...

Miller, Lisa D.; Gidley, Rachel G.; Day, Natalie K.; Thomas, Judith C.
Miller, L.D., Gidley, R.G., Day, N.K., and Thomas, J.C., 2021, Analysis of Escherichia coli, total recoverable iron, and dissolved selenium concentrations, loading, and identifying data gaps for selected 303(d) listed streams, Grand Valley, western Colorado, 1980–2018: U.S. Geological Survey Scientific Investigations Report 2021-5053, 37 p., https://doi.org/10.3133/sir20215053.

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Year Published: 2021

Western pond turtles in the Mojave Desert? A review of their past, present, and possible future

=The western pond turtle (WPT) was formerly considered a single species (Actinemys or Emys marmorata) that ranged from southern British Columbia, Canada to Baja California, México. More recently it was divided into a northern and a southern species. WPTs are found primarily in streams that drain into the Pacific Ocean,...

Lovich, Jeffrey E.; Jefferson, George T.; Reynolds, Robert E.; Scott, Peter A.; Shaffer, H. Bradley; Puffer, Shellie R.; Greely, Sarah; Cummings, Kristy L.; Fisher, R. N.; Meyer-Wilkins, Kathie; Gomez, Doug; Ford, Morgan; Otahal, Christopher D

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Year Published: 2021

Assessing the population impacts and cost‐effectiveness of a conservation translocation

Managers often move, or translocate, organisms into habitats that are assumed to be suitable, however the consequences of these translocations are usually not rigorously assessed. Robust assessment of these management experiments should consider impacts to both donor and recipient populations and compare the cost‐effectiveness of translocations to...

Yackulic, Charles B.; Van Haverbeke, David R.; Dzul, Maria C.; Bair, Lucas S.; Young, Kirk L.

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Year Published: 2021

The demographic and ecological factors shaping diversification among rare Astragalus species

AimEvolutionary radiations are central to the origin and maintenance of biodiversity, yet we rarely understand how they are jointly shaped by demography and ecological opportunity. Astragalus is the largest plant genus in the world and is disproportionately comprised of rare species restricted to narrow geographic and ecological regions...

Jones, Matthew Richard; Winkler, Daniel E.; Massatti, Robert

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Year Published: 2021

A morphodynamic model to evaluate long-term sandbar rebuilding using controlled floods in the Grand Canyon

Controlled floods released from dams have become a common restoration strategy in river systems worldwide. Here we present a morphodynamic model of sandbar volume change for a subset of sandbars of the Colorado River in Grand Canyon National Park, where controlled floods are part of a management strategy focused on sandbar maintenance. We simulate...

Mueller, Erich R.; Grams, Paul

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Year Published: 2021

Riverine complexity and life history inform restoration in riparian environments in the southwestern U.S.

Riparian habitat in the southwestern USA has undergone substantial degradation over the past century, prompting extensive management and restoration of these critical ecosystems. Most restoration efforts, however, do not account for life history traits or riverine complexity that may influence genetic diversity and structure. Here, we use simple...

Palmquist, Emily C.; Allan, Gerald J; Ogle, Kiona; Whitham, Thomas G.; Butterfield, Bradley J.; Shafroth, Patrick B.

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Year Published: 2021

Sharing knowledge to improve ecological restoration outcomes

Ecological restoration efforts are likely to be more successful when project components are informed by relevant stakeholders. However, key stakeholders are often not included in restoration design and deployment. This is largely driven by a lack of practitioner knowledge of and experience with stakeholder relations. However, inclusion of...

Gornish, Elise S; Mccormick, Molly; Begay, Marquel; Nsikani, Mlungele M

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Year Published: 2021

Half of global methane emissions come from highly variable aquatic ecosystem sources

Atmospheric methane is a potent greenhouse gas that plays a major role in controlling the Earth’s climate. The causes of the renewed increase of methane concentration since 2007 are uncertain given the multiple sources and complex biogeochemistry. Here, we present a metadata analysis of methane fluxes from all major natural, impacted and human-...

Rosentreter, Judith A.; Borges, Alberto V.; Deemer, Bridget; Holgerson, Meredith A.; Liu, Shaoda; Song, Chunlin; Melack, John M.; Raymond, Peter A.; Duarte, Carlos M.; Allen, George H.; Olefeldt, David; Poulter, Benjamin; Batin, Tom I.; Eyre, Bradley D.

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Year Published: 2021

The Transformation of dryland rivers: The future of introduced tamarisk in the U.S.

Tamarix spp. (tamarisk or saltcedar), a shrub-like tree, was intentionally introduced to the U.S. from Asia in the mid-1800s. Tamarisk thrives in today’s human-altered streamside (riparian) habitats and can be found along wetlands, rivers, lakes, and streams across the western U.S. In 2001, a biological control agent, Diorhabda spp. (tamarisk leaf...

Nagler, Pamela L.; Hull, Julia B.; van Riper, Charles; Shafroth, Patrick B.; Yackulic, Charles B.
Nagler, P.L., Hull, J.B., van Riper, C., Shafroth, P.B., and Yackulic, C.B., 2021, The Transformation of dryland rivers: The future of introduced tamarisk in the U.S.: U.S. Geological Survey Fact Sheet 2020–3061, 6 p., https://doi.org/10.3133/fs20203061.

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Year Published: 2021

Gopherus Agassizii (Agassiz’s Desert Tortoise). Overwinter movement

No abstract available.

Cummings, Kristy L.; Lovich, Jeffrey E.; Puffer, Shellie R.