Jeffrey E Lovich, Ph.D.
As a Scientist Emeritus, Dr. Jeff Lovich is interested in the interactions of animals and their physical environment. His research focuses on the ecology of turtles and tortoises and the effects of utility-scale renewable energy development (wind and solar) on wildlife, particularly in the Desert Southwest USA.
Dr. Lovich Wins Prestigious Global Turtle Conservation Award
Dr. Lovich Wins Prestigious Global Turtle Conservation Award
Research interests
Jeff has studied the ecology and systematics of turtles and other animals for over 30 years, discovering and naming four of the world’s 356 turtle species, including three in the United States and one in Japan. Other interests include the ecological impacts of invasive species, the ecology and distribution of relict species, and the impacts of human activities (including wind and solar energy development) on wildlife and ecological patterns and processes in the Mojave and Sonoran Deserts.
Books
- Turtles of the United States and Canada (Smithsonian Institution Press, 1994)
- Biological Diversity: Problems and Challenges (Pennsylvania Academy of Science, 1994)
- The State of the Colorado River Ecosystem in the Grand Canyon (U.S. Geological Survey, 2005)
- Turtles of the United States and Canada, Second Edition (Johns Hopkins University Press, 2009)
- Turtles of the World (Princeton University Press, 2021)
Professional Experience
Center Director - USGS, Western Ecological Research Center
Chief - USGS, Grand Canyon Monitoring and Research Center
Education and Certifications
B.S. (1982) and M.S. degrees (1984) Biology, George Mason University
Ph.D. (1990) Ecology, University of Georgia, Institute of Ecology
Affiliations and Memberships*
Member IUCN (World Conservation Union), Species Survival Commission, Tortoise and Freshwater Turtle Specialist Group
Honors and Awards
Recipient of the Behler Turtle Conservation Award, 2024
Fulbright Senior Specialist Award 2008 Cadi Ayyad University, Marrakech, Morocco
Elected Fellow of The Linnean Society of London, the world's oldest active biological society
Science and Products
Filter Total Items: 109
Growing as slow as a turtle: Unexpected maturational differences in a small, long-lived species
Turtle body size is associated with demographic and other traits like mating success, reproductive output, maturity, and survival. As such, growth analyses are valuable for testing life history theory, demographic modeling, and conservation planning. Two important but unsettled research areas relate to growth after maturity and growth rate variation. If individuals exhibit indeterminate...
Authors
Devin Edmonds, Michael J. Dreslik, Jeffrey E. Lovich, Thomas M. Wilson, Carl H. Ernst
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, although scattered populations exist in endorheic drainages of the...
Authors
Jeffrey E. Lovich, George T. Jefferson, Robert Reynolds, Peter A. Scott, H. Bradley Shaffer, Shellie R. Puffer, Sarah Greely, Kristy L. Cummings, Robert N. Fisher, Katherin Meyer-Wilkins, Doug Gomez, Morgan Ford, Christopher D Otahal
Non-native Pond Sliders cause long-term decline of native Sonora Mud Turtles: A 33-year before-after study in an undisturbed natural environment
Using a before-after study design in a stable, largely undisturbed pond habitat and a dataset spanning 33 years, we document and describe the decline of native Sonora mud turtles (Kinosternon sonoriense) after the introduction of non-native pond sliders (Trachemys scripta). The Sonora mud turtle population in Montezuma Well in central Arizona, USA, declined to less than 25% of previous...
Authors
Charles A. Drost, Jeffrey E. Lovich, Philip C. Rosen, Matthew Malone, Steven D. Garber
Gopherus Agassizii (Agassiz’s Desert Tortoise). Overwinter movement
No abstract available.
Authors
Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer
‘Unscrambling’ the drivers of egg production in Agassiz’s desert tortoise: Climate and individual attributes predict reproductive output
ABSTRACT: The ‘bet hedging’ life history strategy of long-lived iteroparous species reduces short-term reproductive output to minimize the risk of reproductive failure over a lifetime. For desert-dwelling ectotherms living in variable and unpredictable environments, reproductive output is further influenced by precipitation and temperature via effects on food availability and limits on...
Authors
Corey I. Mitchell, Derek Friend, Lauren T. Phillips, Elizabeth Ann Hunter, Jeffrey E. Lovich, Mickey Agha, Shellie R. Puffer, Kristy L. Cummings, Philip A. Medica, Todd Esque, Kenneth E. Nussear, Kevin T. Shoemaker
A watershed moment: Analysis of sub-basins refocuses the geography of turtle conservation across the globe
Conservation planners use a variety of decision-making tools, many of which require identifying and prioritizing spatial units based on their biodiversity and levels of imperilment. Turtles are highly imperiled, but present schemes for determining global priority areas are focused mostly on broad regional scales. We conduct the first global evaluation of turtle biodiversity and...
Authors
Joshua R. Ennen, Mickey Agha, Sarah C. Sweat, Wildredo A. Matamoros, Jeffrey E. Lovich, John B. Iverson, Anders G.J. Rhodin, Robert L. Thomson, H. Bradley Shaffer, Christopher W. Hoagstrom
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...
Authors
Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer, Terence R. Arundel, Kathleen D. Brundige
Refining genetic boundaries for Agassiz’s desert tortoise (Gopherus agassizii) in the western Sonoran Desert: The influence of the Coachella Valley on gene flow among populations in southern California
Understanding the influence of geographic features on the evolutionary history and population structure of a species can assist wildlife managers in delimiting genetic units (GUs) for conservation and management. Landscape features including mountains, low elevation depressions, and even roads can influence connectivity and gene flow among Agassiz’s desert tortoise (Gopherus agassizii)...
Authors
Jeffrey E. Lovich, Taylor Edwards, Kristin H. Berry, Shellie R. Puffer, Kristy L. Cummings, Joshua R. Ennen, Mickey Agha, Rachel Wood, Kathleen D. Brundige, Robert W. Murphy
Wind, sun, and wildlife: Do wind and solar energy development “short-circuit” conservation in the western United States?
Despite the trade-offs between renewable energy development, land use, humans, and wildlife, wind and solar development continues to transform the southwestern US into a green energy landscape. While renewable energy reduces carbon emissions and reliance on fossil fuels, many studies have emerged on the associated ecological and social impacts of this technology. Here, we review the...
Authors
Mickey Agha, Jeffrey E. Lovich, Joshua R. Ennen, Brian J. Todd
Turtles and tortoises are in trouble
Turtles and tortoises (chelonians) have been integral components of global ecosystems for about 220 million years and have played important roles in human culture for at least 400,000 years. The chelonian shell is a remarkable evolutionary adaptation, facilitating success in terrestrial, freshwater and marine ecosystems. Today, more than half of the 360 living species and 482 total taxa...
Authors
C.B. Stanford, J.B. Iverson, A.G.J. Rhodin, P.P. van Dijk, R.A. Mittermeier, Gerald Kuchling, Kristin H. Berry, Albert Bertolero, Karen A. Bjorndal, Torsten E. G. Blanck, K. A. Buhlmann, R.L. Burke, J.D. Congdon, Tomas Diagne, Taylor Edwards, Carla Eisemberg, Joshua R. Ennen, Germán Forero-Medina, M. Frankel, U. Fritz, N. Gallego-Garcia, A. Georges, J.W. Gibbons, S. Gong, E.V. Goode, H.T. Shi, H. Hoang, M.D. Hofmeyr, B.D Horne, R. H. Hudson, J.O. Juvik, R.A. Kiester, P.V. Koval, M.-A. Lea, P.V. Lindeman, Jeffrey E. Lovich, Luca Luiselli, T.E.M. McCormack, G.A. Meyer, V.P. Paez, K. Platt, S.G. Platt, P.C.H. Pritchard, H.R. Quinn, Willem R Roosenburg, Jeffrey A. Seminoff, H.B. Shaffer, R. J. Spencer, J.U. Van Dyke, R.C. Vogt, Andrew D. Walde
Turtle biogeography: Global regionalization and conservation priorities
Defaunation in the Anthropocene has created a need to focus limited conservation resources on geographically-explicit areas with high conservation significance. Priority conservation areas are often defined as those with high biodiversity – hotspots. While these conservation areas are critical to securing global biodiversity, prevailing approaches for their delineation are often...
Authors
Joshua R. Ennen, Mickey Agha, Sarah C. Sweat, Wilfredo A. Matamoros, Jeffrey E. Lovich, Anders G.J. Rhodin, John B. Iverson, Christopher W. Hoagstrom
Understanding reproductive allometry in turtles: A slippery “slope”
Measures of reproductive output in turtles are generally positively correlated with female body size. However, a full understanding of reproductive allometry in turtles requires logarithmic transformation of reproductive and body size variables prior to regression analyses. This allows for slope comparisons with expected linear or cubic relationships for linear to linear and linear to...
Authors
John B. Iverson, Peter V. Lindeman, Jeffrey E. Lovich
Filter Total Items: 13
Science and Products
Filter Total Items: 109
Growing as slow as a turtle: Unexpected maturational differences in a small, long-lived species
Turtle body size is associated with demographic and other traits like mating success, reproductive output, maturity, and survival. As such, growth analyses are valuable for testing life history theory, demographic modeling, and conservation planning. Two important but unsettled research areas relate to growth after maturity and growth rate variation. If individuals exhibit indeterminate...
Authors
Devin Edmonds, Michael J. Dreslik, Jeffrey E. Lovich, Thomas M. Wilson, Carl H. Ernst
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, although scattered populations exist in endorheic drainages of the...
Authors
Jeffrey E. Lovich, George T. Jefferson, Robert Reynolds, Peter A. Scott, H. Bradley Shaffer, Shellie R. Puffer, Sarah Greely, Kristy L. Cummings, Robert N. Fisher, Katherin Meyer-Wilkins, Doug Gomez, Morgan Ford, Christopher D Otahal
Non-native Pond Sliders cause long-term decline of native Sonora Mud Turtles: A 33-year before-after study in an undisturbed natural environment
Using a before-after study design in a stable, largely undisturbed pond habitat and a dataset spanning 33 years, we document and describe the decline of native Sonora mud turtles (Kinosternon sonoriense) after the introduction of non-native pond sliders (Trachemys scripta). The Sonora mud turtle population in Montezuma Well in central Arizona, USA, declined to less than 25% of previous...
Authors
Charles A. Drost, Jeffrey E. Lovich, Philip C. Rosen, Matthew Malone, Steven D. Garber
Gopherus Agassizii (Agassiz’s Desert Tortoise). Overwinter movement
No abstract available.
Authors
Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer
‘Unscrambling’ the drivers of egg production in Agassiz’s desert tortoise: Climate and individual attributes predict reproductive output
ABSTRACT: The ‘bet hedging’ life history strategy of long-lived iteroparous species reduces short-term reproductive output to minimize the risk of reproductive failure over a lifetime. For desert-dwelling ectotherms living in variable and unpredictable environments, reproductive output is further influenced by precipitation and temperature via effects on food availability and limits on...
Authors
Corey I. Mitchell, Derek Friend, Lauren T. Phillips, Elizabeth Ann Hunter, Jeffrey E. Lovich, Mickey Agha, Shellie R. Puffer, Kristy L. Cummings, Philip A. Medica, Todd Esque, Kenneth E. Nussear, Kevin T. Shoemaker
A watershed moment: Analysis of sub-basins refocuses the geography of turtle conservation across the globe
Conservation planners use a variety of decision-making tools, many of which require identifying and prioritizing spatial units based on their biodiversity and levels of imperilment. Turtles are highly imperiled, but present schemes for determining global priority areas are focused mostly on broad regional scales. We conduct the first global evaluation of turtle biodiversity and...
Authors
Joshua R. Ennen, Mickey Agha, Sarah C. Sweat, Wildredo A. Matamoros, Jeffrey E. Lovich, John B. Iverson, Anders G.J. Rhodin, Robert L. Thomson, H. Bradley Shaffer, Christopher W. Hoagstrom
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...
Authors
Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer, Terence R. Arundel, Kathleen D. Brundige
Refining genetic boundaries for Agassiz’s desert tortoise (Gopherus agassizii) in the western Sonoran Desert: The influence of the Coachella Valley on gene flow among populations in southern California
Understanding the influence of geographic features on the evolutionary history and population structure of a species can assist wildlife managers in delimiting genetic units (GUs) for conservation and management. Landscape features including mountains, low elevation depressions, and even roads can influence connectivity and gene flow among Agassiz’s desert tortoise (Gopherus agassizii)...
Authors
Jeffrey E. Lovich, Taylor Edwards, Kristin H. Berry, Shellie R. Puffer, Kristy L. Cummings, Joshua R. Ennen, Mickey Agha, Rachel Wood, Kathleen D. Brundige, Robert W. Murphy
Wind, sun, and wildlife: Do wind and solar energy development “short-circuit” conservation in the western United States?
Despite the trade-offs between renewable energy development, land use, humans, and wildlife, wind and solar development continues to transform the southwestern US into a green energy landscape. While renewable energy reduces carbon emissions and reliance on fossil fuels, many studies have emerged on the associated ecological and social impacts of this technology. Here, we review the...
Authors
Mickey Agha, Jeffrey E. Lovich, Joshua R. Ennen, Brian J. Todd
Turtles and tortoises are in trouble
Turtles and tortoises (chelonians) have been integral components of global ecosystems for about 220 million years and have played important roles in human culture for at least 400,000 years. The chelonian shell is a remarkable evolutionary adaptation, facilitating success in terrestrial, freshwater and marine ecosystems. Today, more than half of the 360 living species and 482 total taxa...
Authors
C.B. Stanford, J.B. Iverson, A.G.J. Rhodin, P.P. van Dijk, R.A. Mittermeier, Gerald Kuchling, Kristin H. Berry, Albert Bertolero, Karen A. Bjorndal, Torsten E. G. Blanck, K. A. Buhlmann, R.L. Burke, J.D. Congdon, Tomas Diagne, Taylor Edwards, Carla Eisemberg, Joshua R. Ennen, Germán Forero-Medina, M. Frankel, U. Fritz, N. Gallego-Garcia, A. Georges, J.W. Gibbons, S. Gong, E.V. Goode, H.T. Shi, H. Hoang, M.D. Hofmeyr, B.D Horne, R. H. Hudson, J.O. Juvik, R.A. Kiester, P.V. Koval, M.-A. Lea, P.V. Lindeman, Jeffrey E. Lovich, Luca Luiselli, T.E.M. McCormack, G.A. Meyer, V.P. Paez, K. Platt, S.G. Platt, P.C.H. Pritchard, H.R. Quinn, Willem R Roosenburg, Jeffrey A. Seminoff, H.B. Shaffer, R. J. Spencer, J.U. Van Dyke, R.C. Vogt, Andrew D. Walde
Turtle biogeography: Global regionalization and conservation priorities
Defaunation in the Anthropocene has created a need to focus limited conservation resources on geographically-explicit areas with high conservation significance. Priority conservation areas are often defined as those with high biodiversity – hotspots. While these conservation areas are critical to securing global biodiversity, prevailing approaches for their delineation are often...
Authors
Joshua R. Ennen, Mickey Agha, Sarah C. Sweat, Wilfredo A. Matamoros, Jeffrey E. Lovich, Anders G.J. Rhodin, John B. Iverson, Christopher W. Hoagstrom
Understanding reproductive allometry in turtles: A slippery “slope”
Measures of reproductive output in turtles are generally positively correlated with female body size. However, a full understanding of reproductive allometry in turtles requires logarithmic transformation of reproductive and body size variables prior to regression analyses. This allows for slope comparisons with expected linear or cubic relationships for linear to linear and linear to...
Authors
John B. Iverson, Peter V. Lindeman, Jeffrey E. Lovich
Filter Total Items: 13
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government