Patuxent Wildlife Research Center


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Publications (for reprints contact Evan Grant)


Grant, EHC. 2015. Please don’t misuse the museum: declines may be statistical. Global Change Biology 21:1018-1024.

AB Brand, Wiewel, ANM, and EHC Grant. 2015. Potential for reduction in terrestrial salamander ranges associated with Marcellus shale development. Biological Conservation 180:233-240.

Sterrett, SC, AB Brand, WR Fields, RA Katz, EHC Grant. 2015. Plethodon cinereus (Eastern Red-backed Salamander) movement. Herpetological Review 46:71.

Miller, DAW, LL Bailey, EHC Grant, BT McClintock, LA Weir, and TR Simons. 2015. Performance of species occurrence estimators when basic assumptions are not met: a test using field data where true occupancy status is known. Methods in Ecology and Evolution 6:557-565.

Eros, T and EHC Grant. 2015. Unifying research on the fragmentation of terrestrial and aquatic habitats: patches, connectivity and the matrix in riverscapes. Freshwater Biology 60:1487-1501.


Grant, EHC, ANM Wiewel, KC Rice. 2014. Stream temperature limits occupancy of salamanders. Journal of Herpetology 48: 45-50.

Zipkin, EF, TS Sillet, EHC Grant, RB Chandler, JA Royle. 2014. Inferences about population dynamics from count data using multi-state models: a comparison to capture-recapture approaches. Ecology and Evolution 4: 417-426.

Zipkin, EF, JT Thorson, K See, HJ Lynch, EHC Grant, Y Kanno, RB Chandler, BH Letcher, JA Royle. 2014 Modeling structured population dynamics using data from unmarked individuals. Ecology 95:22–29.

Katz RA, EHC Grant, M Runge, D Hocking, B Letcher and A Roy. Making Decisions in Complex Landscapes: Headwater Stream Management Across Multiple Federal Agencies. Case Studies from Two Structured Decision Making Workshops: Potomac Watershed Workshop: February 3-7, 2014 at the National Conservation Training Center, Shepherdstown, WV, USA and Merrimack Watershed Workshop: March 3-6, 2014 at the SO Conte Anadromous Fish Laboratory, Turners Falls, MA, USA.

Grant, EHC, JEB Wofford, DS Smith, J Dennis, C Hawkins-Hoffman, J Schaberl, M Foley, and M Bogle. 2014. Management and monitoring of an endangered high-elevation salamander under climate change. Workshop report 10-12 April 2012. Natural Resource Report NPS/SHEN/NRR-2014/867.


Adams MJ, Miller DAW, Muths E, Corn PS, Grant EHC, et al. (2013) Trends in Amphibian Occupancy in the United States. PLoS ONE 8(5): e64347.

William L. Kendall, James E. Hines, James D. Nichols, and Evan H. Campbell Grant 2013. Relaxing the closure assumption in occupancy models: staggered arrival and departure times. Ecology 94:610–617.

Yackulic, C.B., R.B. Chandler, E. Zipkin, J.A. Royle, J.D. Nichols, E.H.C. Grant, and S. Veran. 2013. Presence-only modeling using MAXENT: When can we trust the inferences? Methods in Ecology and Evolution 4:236-243.


Miller, DA, BL Talley, KR Lips, EHC Grant. 2012. Detection matters in wildlife epidemiological studies: accounting for sensitivity when estimating disease parameters. Methods in Ecology and Evolution 3(5):850-859.

Zipkin, EF, EHC Grant and WF Fagan. 2012. Evaluating the predictive abilities of community occupancy models using AUC while accounting for imperfect detection. Ecological Applications 22(7) 1962-1972.

Miller, DAW, L Weir, BT McClintock, EHC Grant, LL Bailey, and TR Simons. 2012. Experimental investigation of false positive errors in auditory species occurrence surveys. Ecological Applications 22:1665-1674.

Grant, EHC, HJ Lynch, R Muneepeerakul, M Arunachalam, I Rodriguez-Iturbe and WF Fagan. 2012. Interbasin water transfer, riverine connectivity, and spatial controls on fish biodiversity. PLoS ONE 7(3): e34170. doi:10.1371/journal.pone.0034170.


Grant, EHC, HJ Lynch, R Muneepeerakul, M Arunachalam, I Rodriguez-Iturbe and WF Fagan. 2012. Interbasin water transfer, riverine connectivity, and spatial controls on fish biodiversity. PLoS ONE 7(3): e34170. doi:10.1371/journal.pone.0034170.

Miller, DA, JD Nichols, BT McClintock, EHC Grant, LL Bailey, and LA Weir. 2011. Improving occupancy estimation when two types of observational error occur: non-detection and species misidentification. Ecology 92:1422–1428

Gratwicke, B, M Evans, EHC Grant, J Greathouse,  WJ McShea, N Rotzel and RC Fleischer. 2011.  Low prevalence of Batrachochytrium dendrobatidis detected in Appalachian salamanders from Warren County, Virginia, USA. Herpetological Review 42: 217–219

Kennedy, CM, EHC Grant, WF Fagan, PP Marra and MC Neel. 2011. Landscape matrix mediates occupancy dynamics of neotropical avian insectivores. Ecological Applications 21:1837-1850

Lynch, HJ, EHC Grant, R Muneepeerakul, M Arunachalam, I Rodriguez-Iturbe and WF Fagan.  2011. How restructuring river connectivity changes freshwater fish biodiversity and biogeography.  Water Resources Research 47, W05531, doi:10.1029/2010WR010330

Brown, BL, CM Swan, D Auerbach, C Patrick and EHC Grant.  2011. Advancing theory of community assembly in spatially structured environments: local vs regional processes in river networks. Journal of the North American Benthological Society 30:232-234

Grant, EHC. 2011. Structural complexity, movement bias and metapopulation extinction risk in dendritic ecological networks. Journal of the North American Benthological Society 30:252–258


Grant, EHC. 2010. Book Review: Amphibian Ecology and Conservation: A Handbook of Techniques. Herpetological Review. 41: 393-396.

Hossack, BL, MJ Adams, EHC Grant, CA Pearl, JB Bettaso, WJ Barichivich, WH Lowe, K True, JL Ware, and PS Corn. 2010. Low prevalence of chytrid fungus (Batrachochytrium dendrobatidis) in U. S. headwater amphibians. In press, Journal of Herpetology Journal of Herpetology 44:253-260.

Grant, EHC, JD Nichols, WH Lowe and WF Fagan. 2010. Overland movement facilitates amphibian persistence in stream networks. Proceedings of the National Academy of Sciences, USA 107:6936-6940.

Grant, EHC. 2010. Organized Oral Session 16. Linking data and theory in dendritic ecological networks: from ecological problems to rapid understanding. Bulletin of the Ecological Society of America 91:65-67.


Grant, EHC, LE Green and WH Lowe. 2009. Salamander occupancy in dendritic ecological networks. Freshwater Biology 54: 1370-1378 (Thesis chapter)

Mattfeldt, SD, LL Bailey, and EHC Grant. 2009. Monitoring multiple species: estimating site occupancy, local colonization, extinction and exploring the efficacy of a monitoring program. Biological Conservation142: 720-737.


Bailey, L.L., W.L. Kendall, and D. R. Church. Exploring extensions to multi-state models with multiple unobservable states. Environmental and Ecological Statistics.

Grant, E. H. C. Assessing visual implant elastomer mark retention in amphibian larvae through metamorphosis. Journal of Wildlife Management

Grant, E. H. C., L. L. Bailey, J. L. Ware and K. L. Duncan. The amphibian pathogen Batrachochytrium dendrobatidis detected in a community of stream and wetland amphibians. Applied Herpetology.

Van Meter, R., LL Bailey, and EHC Grant. Methods for Estimating the Amount of Vernal Pool Habitat in the Northeastern United States. Wetlands.


Bailey, L.L., J.E. Hines, J.D. Nichols and D. I. MacKenzie. 2007. Sampling design trade-offs in occupancy studies with imperfect detection: Examples and software. Ecological Applications 17: 281-290.

Church, D.R., L.L. Bailey, H.M. Wilbur, W.L. Kendall and J.E. Hines. Iteroparity in the variable environment of the salamander Ambystoma tigrinum. Ecology 88: 891-903.

Grant, E. H.C., W.H. Lowe and W.F. Fagan. 2007. Living in the branches: population dynamics and ecological processes in dendritic networks. Ecology Letters 10:165-175.

Mazerolle, M.J., L. L. Bailey, W.L. Kendall, J. A. Royle, S. J. Converse, and J.D. Nichols. Making great leaps forward in herpetology: accounting for detectability in field studies. Journal of Herpetology.

O'Connell, A. F., N. W. Talancy, L. L. Bailey, J. R. Sauer, R. Cook, A. T. Gilbert. 2007. Estimating site occupancy and detection probability parameters for mammals in a coastal ecosystem. Journal of Wildlife Management 70: 1625-1633.

Mattfeldt, S. D. and E.H.C. Grant. 2007. Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders. Herpetological Review 38:43-45


Conn, P. B., A. D. Arthur, L. L. Bailey, and G.R. Singleton. 2006. Estimating the abundance of mouse populations of known size: Promises and pitfalls of new methods. Ecological Applications 16: 829-837.

Grant, E. H. C. and P. Nanjappa. 2006. Observer bias study: individual identification of spotted salamanders (Ambystoma maculatum) using spot patterns with recommendations for an improved method. Herpetological Review 37:57-60.

MacKenzie, D.I., J. D. Nichols, J. A. Royle, K. H. Pollock, L.L. Bailey, and J.E. Hines. 2006. Occupancy estimation and modeling: Inferring patterns and dynamics of species occurrence. Academic Press. 328pp.

Muths, E., A. L. Gallant, E.H. Campbell Grant, W. A. Battaglin, D. E. Green, J. Staiger, S. Walls, M. Gunzburger and R. Kearney. Amphibian Research and Monitoring Initiative: 5 year report. U.S. Geological Survey Scientific Investigations Report 2006-5224, 77 p.


Bank, M.S., C.S. Loftin, T.A. Haines, and R.E. Jung. 2005 (In Press). Effects of watershed heterogeneity on mercury bioaccumulation in two-lined salamanders. Ecotoxicology 14(1-2). Special "Mercury in the northeastern United States" Issue – Invited Paper

Dayton, G.H., R.E. Jung, and S. Droege. 2005. Large-scale habitat associations of four desert anurans in Big Bend National Park, Texas. Journal of Herpetology 38: 619-627.

Grant, E.H.C. 2005. Correlates of vernal pool occurence in the Massachusetts landscape. Wetlands 25: 480-487.

Grant, E.H.C., R.E. Jung, J.D. Nichols, and J.E. Hines. 2005. Double-observer approach to estimating egg mass abundance of pool-breeding amphibians. Wetlands Ecology and Management 13: 305-320.

Grant, E.H.C., R.E. Jung, and K.C. Rice. 2005. Stream Salamander Species Richness and Abundance in Relation to Environmental Factors in Shenandoah National Park, Virginia: A Stratified Random Survey. American Midland Naturalist 153:348-356.

Muths,E., R.E. Jung, L. Bailey, M.J. Adams, P.S. Corn, R.K. Dodd, G. Fellers, R.N. Fisher, W.J. Sadinski, C. Schwalbe, S. Walls, A.L. Gallant, and W.A. Battaglin. The U.S. Department of Interior's Amphibian Research and Monitoring Initiative (ARMI): A successful start to a national program. Applied Herpetology 2: 355-371.

Rice, K.C. and R.E. Jung. Water-quality and amphibian population data collected in Maryland, Washington, D.C., and Virginia, 2001-2004. USGS Open File Report.


Grant, E.H.C., I.C. Chellman, P. Nanjappa, and R.E. Jung. 2004. Rana spp. (multiple ranid species). Hibernacula. Herpetological Review 35: 262-263.

Sites, J.W., Jr., M. Morando, R. Highton, F. Huber, and R.E. Jung. 2004. Phylogenetic relationships of the endangered Shenandoah salamander (Plethodon shenandoah) and other salamanders of the P. cinereus Group (Caudata: Plethodontidae). Journal of Herpetology 38:96-105.

Southerland, M. T., Jung, R.E., Baxter, D.P., Chellman, I.C., Mercurio, G. & Volstad, J.H. 2004. Stream salamanders as indicators of stream quality in Maryland, USA. Applied Herpetology 2: 23-46.


Jung, R.E., G.H. Dayton, S.J. Williamson, J.R. Sauer, and S. Droege. 2002. An evaluation of population index and estimation techniques for tadpoles in desert pools. Journal of Herpetology 36:465-472.

Jung, R.E., K.E. Bonine, M.L. Rosenshield, A. de la Reza, S. Raimondo, and S. Droege. 2002. Evaluation of canoe surveys for anurans along the Rio Grande in Big Bend National Park, Texas. Journal of Herpetology 36:390-397.


Bonine, K.E., G.H. Dayton, and R.E. Jung. 2001. Attempted predation of Couch's spadefoot (Scaphiopus couchii) juveniles by ants (Aphaenogaster cockerelli). The Southwestern Naturalist 46:104-106.

Carpenter, D.W., R.E. Jung, and J.W. Sites, Jr. 2001. Conservation genetics of the endangered Shenandoah salamander (Plethodon shenandoah, Plethodontidae). Animal Conservation 4:111-119.

Jung, R.E., S. Claeson, J.E. Wallace, and W.C. Welbourn, Jr. 2001. Eleutherodactylus guttilatus (spotted chirping frog), Bufo punctatus (red-spotted toad), Hyla arenicolor (canyon tree frog), and Rana berlandieri (Rio Grande leopard frog). Mite infestation. Herpetological Review 32:33-34.


Jung, R.E., S. Droege, J.R. Sauer, and R.B. Landy. 2000. Evaluation of terrestrial and streamside salamander monitoring techniques at Shenandoah National Park. Environmental Monitoring and Assessment 63:65-79.

Jung, R.E., W.L. Ward, C.O. King, and L.A. Weir. 2000. Plethodon cinereus (Redback Salamander). Predation. Herpetological Review 31:98-99.

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