Southwest Biological Science Center

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The Southwest Biological Science Center (SBSC) conducts quality, objective research on the lands and aquatic systems of the Southwest. This research can assist those who manage, conserve, and rehabilitate the arid regions of the nation. Click on SCIENCE in the sidebar to the left to explore SBSC science in more detail.

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Terrestrial Dryland Ecology Branch

Terrestrial Dryland Ecology Branch

The Terrestrial Dryland Ecology (TDE) Branch of the SBSC studies the biology, ecology,and processes of semi-arid and arid lands (known as drylands). TDE researchers study plant-soil-water relationships and the wildlife found in drylands.

TDE Science

River Ecosystem Science Branch & GCMRC

River Ecosystem Science Branch & GCMRC

The River Ecosystem Science (RES) Branch of the SBSC, which includes the Grand Canyon Monitoring and Research Center (GCMRC), studies the biology, ecology, and processes of rivers in the western United States, with an emphasis on the Southwest.

GCMRC & RES Science

News

Date published: May 27, 2021

RAMPS NEWSLETTER - Spring 2021 Edition

Restoration Assessment and Monitoring Program for the Southwest (RAMPS)

A Program of the Southwest Biological Science Center & Ecosystems Mission Area

To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps

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Date published: May 24, 2021

Aerial Mapping of the Colorado River over Memorial Day Weekend

The USGS will collect high-resolution aerial imagery over Grand Canyon National Park for approximately one week beginning Saturday, May 29, to document, observe and track long-term ecosystem changes in the Colorado River. Visitors along the Colorado River in Glen Canyon National Recreation Area and Grand Canyon National Park may see and hear aircraft more frequently during this time.

Publications

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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.