Terry Arundel is the SBSC Science Data Coordinator and a geographer with the USGS Southwest Biological Science Center (SBSC), specializing in using geographic information systems, remote sensing, and modeling technologies to analyze complex geospatial and temporal ecosystem research questions.
He received a Masters in Geography from Northern Arizona University and has over 25 years of professional experience in surveying, cartography and geographic information systems (GIS). Terry began his career as a land surveyor in Phoenix, Arizona. During his final year of undergraduate education at Northern Arizona University, he was awarded a working internship as a cartographer at the National Geographic Society from a national competition. Later he was employed as a cartographer for the Smithsonian Institution, Museum of Natural History. For more than 20 years he has worked exclusively with GIS to analyze complex geographic problems or model spatial relationships. His research interests include geography of the Colorado Plateau, ecological principles that influence the temporal and spatial distribution of wildlife and vegetation, applied spatial statistics and modeling in GIS, and cartography as an art form.
Terry Arundel serves as a USGS Science Data Coordinator and Geographer to provide leadership in geography and geospatial information science and technology (GIS). He is responsible for leadership, management, development, coordination, operation, assuring conformance with agency standards, and informal training within the Center's Geospatial Technology program. He coordinates a cohesive, efficient, anticipatory, and contemporary GIS program in support of natural resource and biological research projects conducted within the Center. This entails program leadership, coordination and conducting project-specific work to support the needs of Center scientists. To accomplish this goal he works closely with Center scientists in all locations, communication and outreach staff, research station and project-specific GIS specialists/spatial analysts, and USGS contacts in other Centers, the Western Regional Office, the Enterprise GIS (EGIS) and Enterprise Applications Center, and the USGS National Center. Finally, Terry provides expert knowledge in geospatial science and technology (GST) methodologies and techniques, including Web-based access and delivery, to other federal, state, and local agencies, and private sector firms.
Science and Products
Southwest Energy Exploration, Development, and Reclamation (SWEDR)
USGS Southwest Repeat Photography Collection: Kanab Creek, southern UT and northern AZ, 1872-2010
Variable Terrestrial GPS Telemetry Detection Rates: Parts 1 - 7Data
High female desert tortoise mortality in the western Sonoran Desert during California’s epic 2012–2016 drought
Birds not in flight: Using camera traps to observe ground use of birds at a wind-energy facility
Micro-geographic variation in burrow use of Agassiz’s desert tortoises in the Sonoran Desert of California
Little has been published regarding the burrowing habits of Agassiz’s desert tortoises (Gopherus agassizii) in the Sonoran Desert of California. We monitored the interactions of tortoises with their burrows, and other tortoises, via radio-telemetry at two nearby sites between the Cottonwood and Orocopia Mountains, from 2015-2018. We examined how annual cycles of drought and non-drought years, beha
Agassiz’s desert tortoise (Gopherus agassizii) activity areas are little changed after wind turbine-induced fires in California
Geomorphometry in landscape ecology: Issues of scale, physiography, and application
Landscape-scale wildlife species richness metrics to inform wind and solar energy facility siting: An Arizona case study
Reproductive output and clutch phenology of female Agassiz's desert tortoises (Gopherus agassizii) in the Sonoran Desert region of Joshua Tree National Park
Quantifying animal movement for caching foragers: the path identification index (PII) and cougars, Puma concolor
Mammalian mesocarnivore visitation at tortoise burrows in a wind farm
Is GPS telemetry location error screening beneficial?
Variable terrestrial GPS telemetry detection rates: Addressing the probability of successful acquisitions
A potential predator-prey interaction of an American badger and an Agassiz's desert tortoise with a review of badger predation on turtles
Science and Products
- Science
Southwest Energy Exploration, Development, and Reclamation (SWEDR)
Approximately 35% of the US and approximately 82% of DOI lands are “drylands” found throughout the western US. These lands contain oil, gas, oil shale, shale oil, and tar sand deposits and the exploration for and extraction of these resources has resulted in hundreds of thousands of operating and abandoned wells across the West. These arid and semi-arid lands have unique soil and plant communities... - Data
USGS Southwest Repeat Photography Collection: Kanab Creek, southern UT and northern AZ, 1872-2010
The USGS Southwest Repeat Photography Collection (Collection), formerly named the Desert Laboratory Repeat Photography Collection, is now housed by the Southwest Biological Science Center (SBSC) in Flagstaff, Arizona. It contains images from the late 1800s to mid-2000s, and was assembled over decades by now retired USGS scientists Drs. Robert H. Webb and Raymond M. Turner. There are 80 camera poinVariable Terrestrial GPS Telemetry Detection Rates: Parts 1 - 7Data
These data were used to explore environmental effects on fix success rates (FSR) across a wide range of environmental conditions, desert to alpine biomes, and cover the full range of potential data loss (0-100% FSR) for global positioning system (GPS) bias correction of terrestrial GPS-derived, large mammal habitat use. Also, these data were subsequently used to evaluate patterns in missing data t - Publications
Filter Total Items: 19
High female desert tortoise mortality in the western Sonoran Desert during California’s epic 2012–2016 drought
We conducted population surveys for desert tortoises Gopherus agassizii at 2 nearby sites in the western Sonoran Desert of California, USA, from 2015-2018, during the driest ongoing 22 yr period (2000-2021) in the southwestern USA in over 1200 yr. We hypothesized that drought-induced mortality would be female-biased due to water and energy losses attributable to egg production during protracted peAuthorsJeffrey E. Lovich, Michele (Shellie) R. Puffer, Kristy L. Cummings, Terence R. Arundel, Michael S. Vamstad, Kathleen D. BrundigeBirds not in flight: Using camera traps to observe ground use of birds at a wind-energy facility
Context: Camera trapping is increasingly used to collect information on wildlife occurrence and behaviour remotely. Not only does the technique provide insights into habitat use by species of interest, it also gathers information on non-target species.Aims: We implemented ground-based camera trapping to investigate the behaviours of ground-dwelling birds, a technique that has largely been unutilisAuthorsShellie R. Puffer, Laura A. Tennant, Jeffrey E. Lovich, Mickey Agha, Amanda L. Smith, David Delaney, Terence R. Arundel, Leo J. Fleckenstein, Jessica Briggs, Andrew Walde, Joshua EnnenMicro-geographic variation in burrow use of Agassiz’s desert tortoises in the Sonoran Desert of California
Little has been published regarding the burrowing habits of Agassiz’s desert tortoises (Gopherus agassizii) in the Sonoran Desert of California. We monitored the interactions of tortoises with their burrows, and other tortoises, via radio-telemetry at two nearby sites between the Cottonwood and Orocopia Mountains, from 2015-2018. We examined how annual cycles of drought and non-drought years, beha
AuthorsKristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer, Terence R. Arundel, Kathleen D. BrundigeAgassiz’s desert tortoise (Gopherus agassizii) activity areas are little changed after wind turbine-induced fires in California
Wind turbine-induced fires at a wind energy facility in California, USA, provided an opportunity to study the before and after effects of fire on a population of protected Agassiz’s desert tortoises (Gopherus agassizii) in the Sonoran Desert, a species and ecosystem poorly adapted to fire. We compared annual activity areas (AAs) of tortoises in 2011 and 2013, before and after two 2012 fires, withAuthorsJeffrey E. Lovich, Mickey Agha, Joshua R. Ennen, Terence R. Arundel, Meaghan AustinGeomorphometry in landscape ecology: Issues of scale, physiography, and application
Topographic measures are frequently used in a variety of landscape ecology applications, in their simplest form as elevation, slope, and aspect, but increasingly more complex measures are being employed. We explore terrain metric similarity with changes in scale, both grain and extent, and examine how selecting the best measures is sensitive to changes in application. There are three types of topoAuthorsKirsten E. Ironside, David J. Mattson, Terence R. Arundel, Tad Theimer, Brandon Holton, Michael Peters, Thomas C. Edwards, Jered R. HansenLandscape-scale wildlife species richness metrics to inform wind and solar energy facility siting: An Arizona case study
The juxtaposition of wildlife and wind or solar energy facility infrastructure can present problems for developers, planners, policy makers, and management agencies. Guidance on siting of these renewable energy facilities may help identify potential wildlife-facility conflicts with species of regulatory or economic concern. However, existing spatial guidance usually does not consider all wildlifeAuthorsKathryn A. Thomas, Christopher Jarchow, Terence R. Arundel, Pankaj Jamwal, Amanda Borens, Charles A. DrostReproductive output and clutch phenology of female Agassiz's desert tortoises (Gopherus agassizii) in the Sonoran Desert region of Joshua Tree National Park
Agassiz's desert tortoise (Gopherus agassizii) reaches the southern edge of its range in the Sonoran Desert of California. The reproductive ecology of this wideranging species is understudied here compared to populations in the adjacent Mojave Desert. Understanding potential geographic variation in reproductive ecology is important for effective management of conservation-reliant species like G. aAuthorsJeffrey E. Lovich, Shellie R. Puffer, Mickey Agha, Joshua R. Ennen, Kathie Meyer-Wilkins, Laura A. Tennant, Amanda L Smith, Terence R. Arundel, Kathleen D. Brundige, Michael S. VamstadQuantifying animal movement for caching foragers: the path identification index (PII) and cougars, Puma concolor
Relocation studies of animal movement have focused on directed versus area restricted movement, which rely on correlations between step-length and turn angles, along with a degree of stationarity through time to define behavioral states. Although these approaches may work well for grazing foraging strategies in a patchy landscape, species that do not spend a significant amount of time searching oAuthorsKirsten E. Ironside, David J. Mattson, Tad Theimer, Brian Jansen, Brandon Holton, Terence R. Arundel, Michael Peters, Joseph O. Sexton, Thomas C. EdwardsMammalian mesocarnivore visitation at tortoise burrows in a wind farm
There is little information on predator–prey interactions in wind energy landscapes in North America, especially among terrestrial vertebrates. Here, we evaluated how proximity to roads and wind turbines affect mesocarnivore visitation with desert tortoises (Gopherus agassizii) and their burrows in a wind energy landscape. In 2013, we placed motion-sensor cameras facing the entrances of 46 activeAuthorsMickey Agha, Amanda L. Smith, Jeffrey E. Lovich, David F. Delaney, Joshua R. Ennen, Jessica R. Briggs, Leo J. Fleckenstein, Laura A. Tennant, Shellie R. Puffer, Andrew D. Walde, Terence R. Arundel, Steven J. Price, Brian D. ToddIs GPS telemetry location error screening beneficial?
The accuracy of global positioning system (GPS) locations obtained from study animals tagged with GPS monitoring devices has been a concern as to the degree it influences assessments of movement patterns, space use, and resource selection estimates. Many methods have been proposed for screening data to retain the most accurate positions for analysis, based on dilution of precision (DOP) measures,AuthorsKirsten E. Ironside, David J. Mattson, Terence R. Arundel, Jered R. HansenVariable terrestrial GPS telemetry detection rates: Addressing the probability of successful acquisitions
Studies using global positioning system (GPS) telemetry rarely result in 100% fix success rates (FSR), which may bias datasets because data loss is systematic rather than a random process. Previous spatially explicit models developed to correct for sampling bias have been limited to small study areas, a small range of data loss, or were study-area specific. We modeled environmental effects on FSRAuthorsKirsten E. Ironside, David J. Mattson, David Choate, David Stoner, Terence R. Arundel, Jered R. Hansen, Tad Theimer, Brandon Holton, Brian Jansen, Joseph O. Sexton, Kathleen M. Longshore, Thomas C. Edwards, Michael PetersA potential predator-prey interaction of an American badger and an Agassiz's desert tortoise with a review of badger predation on turtles
The federally threatened Agassiz’s desert tortoise (Gopherus agassizii) was listed under the U.S. Endangered Species Act in 1990, but thus far, recovery efforts have been unsuccessful (U.S. Fish and Wildlife Service [USFWS] 2015). Predation has been identified as a contributing factor to declining G. agassizii populations range-wide (e.g., Esque et al. 2010, Lovich et al. 2014). Understanding andAuthorsAmanda L. Smith, Shellie R. Puffer, Jeffrey E. Lovich, Laura A. Tennant, Terence R. Arundel, Michael S. Vamstad, Kathleen D. Brundige