selected publications
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academic article
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Walkup, D. K., Ryberg, W. A., Pierce, J. B., Smith, E., Childress, J., East, F., ... Hibbitts, T. J.
(2023).
Testing the detection of large, secretive snakes using camera traps. 47(1),
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Bowers, B. C., Walkup, D. K., Hibbitts, T. J., Crump, P. S., Ryberg, W. A., Adams, C. S., & Lopez, R. R.
(2022).
An Evaluation of Western Chicken Turtle (Deirochelys reticularia miaria) Survey and Capture Protocols. Journal of Herpetology.
56(4), 489-498.
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Bowers, B. C., Hibbitts, R. L., Hibbitts, T. J., Walkup, D. K., Ryberg, W. A., Lopez, R. R., & Crump, P. S.
(2022).
Fecundity, Female Maturation, and Nesting Season of Western Chicken Turtles (Deirochelys reticularia miaria) in Texas. Chelonian Conservation Biology.
21(2), 225-231.
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Bylsma, R., Walkup, D. K., Hibbitts, T. J., Ryberg, W. A., Black, A. N., & DeWoody, J. A.
(2022).
Population genetic and genomic analyses of Western Massasauga (Sistrurus tergeminus ssp.): implications for subspecies delimitation and conservation. Conservation Genetics.
23(2), 271-283.
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Walkup, D. K., Lawing, A. M., Hibbitts, T. J., & Ryberg, W. A.
(2022).
Biogeographic consequences of shifting climate for the western massasauga (Sistrurus tergeminus). Ecology and Evolution.
12(2), e8599.
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Walkup, D. K., Ryberg, W. A., Hibbitts, T. J., Skow, K. L., Powers, G., Fitzgerald, L. A., Collier, B. A., & Lopez, R. R.
(2022).
USING LIDAR TO ENHANCE DISTRIBUTION MODELS FOR THE DUNES SAGEBRUSH LIZARD (SCELOPORUS ARENICOLUS) IN TEXAS, USA. HERPETOLOGICAL CONSERVATION AND BIOLOGY.
17(2), 349-361.
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Hibbitts, T. J., Walkup, D. K., LaDuc, T. J., Wolaver, B. D., Pierre, J. P., Duran, M., ... Ryberg, W. A.
(2021).
Natural history of the spot-tailed earless lizards (Holbrookia lacerata and H. subcaudalis). JOURNAL OF NATURAL HISTORY.
55(7-8), 495-514.
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Ryberg, W. A., Walkup, D. K., Hibbitts, T. J., Pittman, W., Porter, V. H., Bowers, B. C., ... Hagedorn, B. W.
(2021).
Effective Camera Trap Snake Surveys at a Rarely Accessible Longleaf Pine Savanna. Herpetological Review.
52(4), 719-724.
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Bowers, B. C., Walkup, D. K., Hibbitts, T. J., Crump, P. S., Ryberg, W. A., Lawing, A. M., & Lopez, R. R.
(2021).
SHOULD I STAY OR SHOULD I GO? SPATIAL ECOLOGY OF WESTERN CHICKEN TURTLES (DEIROCHELYS RETICULARIA MIARIA). HERPETOLOGICAL CONSERVATION AND BIOLOGY.
16(3), 594-611.
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Chan, L. M., Painter, C. W., Hill, M. T., Hibbitts, T. J., Leavitt, D. J., Ryberg, W. A., Walkup, D., & Fitzgerald, L. A.
(2020).
Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist. PLoS One.
15(9), e0238194-e0238194.
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Neuharth, D. B., Ryberg, W. A., Adams, C. S., Hibbitts, T. J., Walkup, D. K., Frizzell, S. L., ... Rudolph, D. C.
(2020).
Searching for rare and secretive snakes: are camera-trap and box-trap methods interchangeable?. Wildlife Research.
47(6), 476-484.
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Walkup, D. K., Ryberg, W. A., Fitzgerald, L. A., & Hibbitts, T. J.
(2019).
From the ground up: microhabitat use within a landscape context frames the spatiotemporal scale of settlement and vacancy dynamics in an endemic habitat specialist. Landscape Ecology.
34(11), 2631-2647.
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Ryberg, W. A., Garrett, T. B., Adams, C. S., Campbell, T. A., Walkup, D. K., Johnson, T. E., & Hibbitts, T. J.
(2019).
Life in the thornscrub: movement, home range, and territoriality of the reticulate collared lizard (Crotaphytus reticulatus). JOURNAL OF NATURAL HISTORY.
53(27-28), 1707-1719.
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Walkup, D. K., Riberg, W. A., Fitzgerald, L. A., & Hibbitts, T. J.
(2018).
OCCUPANCY AND DETECTION OF AN ENDEMIC HABITAT SPECIALIST, THE DUNES SAGEBRUSH LIZARD (SCELOPORUS ARENICOLUS). HERPETOLOGICAL CONSERVATION AND BIOLOGY.
13(3), 497-506.
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Walkup, D. K., Leavitt, D. J., & Fitzgerald, L. A.
(2017).
Effects of habitat fragmentation on population structure of dune-dwelling lizards. Ecosphere.
8(3), e01729-e01729.
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Hibbitts, T. J., Fitzgerald, L. A., Walkup, D. K., & Ryberg, W. A.
(2017).
Why didn't the lizard cross the road? Dunes sagebrush lizards exhibit road-avoidance behaviour. Wildlife Research.
44(3), 194-199.
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Walkup, D. K., Ryberg, W. A., Pierce, J. B., Smith, E., Childress, J., East, F., ... Hibbitts, T. J.
(2023).
Testing the detection of large, secretive snakes using camera traps. 47(1),
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chapter
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Fitzgerald, L. A., Ryberg, W. A., Walkup, D. K., Hibbitts, T. J., Hill, M. T., Leavitt, D. J., Chan, L. M., & Parker, M. R.
(2022).
Ecology and Conservation of the Imperiled Dunes Sagebrush Lizard: An Ecological Specialist in a Threatened Ecosystem. Imperiled: The Encyclopedia of Conservation.
(pp. 494-510).
Elsevier.
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Fitzgerald, L. A., Walkup, D., Chyn, K., Buchholtz, E., Angeli, N., & Parker, M.
(2018).
The Future for Reptiles: Advances and Challenges in the Anthropocene. Encyclopedia of the Anthropocene.
(pp. 163-174).
Elsevier.
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Fitzgerald, L. A., Ryberg, W. A., Walkup, D. K., Hibbitts, T. J., Hill, M. T., Leavitt, D. J., Chan, L. M., & Parker, M. R.
(2022).
Ecology and Conservation of the Imperiled Dunes Sagebrush Lizard: An Ecological Specialist in a Threatened Ecosystem. Imperiled: The Encyclopedia of Conservation.
(pp. 494-510).
Elsevier.
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conference paper
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Jacisin, J. J., Fielder, C., Hibbitts, T. J., Ryberg, W. A., Walkup, D. K., Meik, J. M., & Lawing, A. M.
(2021).
Morphological variation of cranial elements in the western massasauga (Sistrurus tergeminus). INTEGRATIVE AND COMPARATIVE BIOLOGY.
E410-E411.
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Jacisin, J. J., Fielder, C., Hibbitts, T. J., Ryberg, W. A., Walkup, D. K., Meik, J. M., & Lawing, A. M.
(2021).
Morphological variation of cranial elements in the western massasauga (Sistrurus tergeminus). INTEGRATIVE AND COMPARATIVE BIOLOGY.
E410-E411.
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institutional repository document
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Chan, L. M., Painter, C. W., Hill, M. T., Hibbitts, T. J., Leavitt, D. J., Ryberg, W. A., Walkup, D., & Fitzgerald, L. A.
(2020).
Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist
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Chan, L. M., Painter, C. W., Hill, M. T., Hibbitts, T. J., Leavitt, D. J., Ryberg, W. A., Walkup, D., & Fitzgerald, L. A.
(2020).
Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist