Patuxent Wildlife Research Center

Patuxent Intranet | Patuxent Home | Staff | Contact Us  

Evan Grant


USGS Professional Page:


Areas of Study

Managing the Extinction risk of the Shenandoah Salamander under predicted climate change

Making decisions for headwater stream conservation at the watershed scale

Amphibian Research and Monitoring Program

North American Amphibian Monitoring Program



Grant, E. H. C., D. A. W. Miller, B. R. Schmidt, M. J. Adams, S. M. Amburgey, T. Chambert, S. S. Cruickshank, R. N. Fisher, D. M. Green, B. R. Hossack, P. J. T. Johnson, M. B. Joseph, T. Rittenhouse, M. Ryan, J. H. Waddle, S. C. Walls, L. L. Bailey, G. M. Fellers, T. A. Gorman, A. M. Ray, D. S. Pilliod, S. J. Price, D. Saenz, and E. Muths. 2016. Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines. Scientific Reports Online Early April 20 Abstract

Grant, E. H. C., E. L. Muths, R. A. Katz, S. Canessa, M. J. Adams, J. R. Ballard, L. Berger, C. J. Briggs, J. Coleman, M. J. Gray, M. C. Harris, R. N. Harris, B. R. Hossack, K. P. Huyvaert, J. E. Kolby, K. R. Lips, R. E. Lovich, H. I. McCallum, J. R. Mendelson, III, P. Nanjappa, D. H. Olson, J. G. Powers, K. L. D. Richgels, R. E. Russell, B. R. Schmidt, A. Spitzen-van der Sluijs, M. K. Watry, D. C. Woodhams, and C. L. White. 2016. Salamander chytrid fungus (Batrachochytrium salamandrivorans) in the United States—Developing research, monitoring, and management strategies. Open-File Report 2015-1233. U.S. Geological Survey. 16 pp. Abstract

Richgels, K. L. D., R. E. Russell, M. J. Adams, and E. H. C. Grant. 2016. Spatial variation in risk and consequence of Batrachochytrium salamandrivorans introduction in the USA. Royal Society Open Source 3:150616. Abstract

Sutherland, C., D. J. Munoz, D. A. W. Miller, and E. H. C. Grant. 2016. Spatial capture-recapture: a promising method for analyzing data collected using artificial cover objects. Herpetologica 72(1):6-12. Abstract


Grant, E. H. C.2015. Please don't misuse the museum: ‘declines’ may be statistical. Global Change Biology 21(3):1018-1024. Abstract

Drum, R. G., C. A. Ribic, K. Koch, E. Lonsdorf, E. Grant, M. Ahlering, L. Barnhill, T. Dailey, S. Lor, C. Mueller, D. C. Pavlacky ,Jr.,, Rideout, C., and D. Sample. 2015. Strategic Grassland Bird Conservation throughout the Annual Cycle: Linking Policy Alternatives, Landowner Decisions, and Biological Population Outcomes. PLoS ONE 11(e0142525) Abstract

Erõs, T. and E. H. C. Grant. 2015. Unifying research on the fragmentation of terrestrial and aquatic habitats: patches, connectivity and the matrix in riverscapes. Freshwater Biology 60(8):1487-1501. Abstract

Miller.D.A.W., L. L. Bailey, E. H. C. Grant, B. T. McClintock, L. A. Weir, and T. R. 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(5):557-565. Abstract

Miller, D. A. W. and E. H. C. Grant. 2015. Estimating occupancy dynamics for large-scale monitoring networks: amphibian breeding occupancy across protected areas in the northeast United States. Ecology and Evolution 5(21):4735-4746. Abstract

Sterrett, S. C., A. B. Brand, W. R. Fields, R. A. Katz, and E. H. C. Grant. 2015. Plethodon cinereus (Eastern Red-backed Salamander). Movement. Herpetological Review 46(1):71.


Grant, E. H. C., A. N. M. Wiewel, and K. C. Rice. 2014. Stream-water temperature limits occupancy of salamanders in mid-atlantic protected areas. Journal of Herpetology 48(1):45-50. Abstract

Brand, A. B., A. N. M. Wiewel, and E. H. C. Grant. 2014. Potential reduction in terrestrial salamander ranges associated with Marcellus shale development. Biodiversity and Conservation 180:233-240. Abstract

Zipkin, E. F., J. T. Thorson, K. See, H. J. Lynch, E. H. C. Grant, Y. Kanno, R. B. Chandler, B. H. Letcher, and J. A. Royle. 2014. Modeling structured population dynamics using data from unmarked individuals. Ecology 95(1):22-29. Abstract

Zipkin, E. F., T. S. Sillett, E. H. C. Grant, R. B. Chandler, and J. A. Royle. 2014. Inferences about population dynamics from count data using multistate models: a comparison to capture–recapture approaches. Ecology and Evolution 4(4):417-426. Abstract


Grant, E. H. C., E. F. Zipkin, J. D. Nichols, and J. P. Campbell. 2013. A strategy for monitoring and managing declines in an amphibian community. Conservation Biology 27(6):1245-1253. Abstract

Adams, M. J., D. A. W. Miller, E. Muths, P. S. Corn, E. H. C. Grant, L. L. Bailey, G. M. Fellers, R. N. Fisher, W. J. Sadinski, H. Waddle, and S. C. Walls. 2013. Trends in amphibian occupancy in the United States. PLoS ONE 8(5):article no. e64347. Abstract

Green, A. W., M. B. Hooten, E. H. C. Grant, and L. L. Bailey. 2013. Evaluating breeding and metamorph occupancy and vernal pool management effects for wood frogs using a hierarchical model. Journal of Applied Ecology 50(5):1116-1123. Abstract

Kendall, W. L., J. E. Hines, J. D. Nichols, and E. H. C. Grant. 2013. Relaxing the closure assumption in occupancy models: Staggered arrival and departure times. Ecology 94(3):610-617. Abstract

Yackulic, C., R. Chandler, E. F. 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(3):236-243. Abstract


Grant, E. H. C., H. J. Lynch, R. Muneepeerakul, M. Arunachalam, I. Rodríguez-Iturbe, and W. F. Fagan. 2012. Interbasin water transfer, riverine connectivity, and spatial controls on fish biodiversity. PloS ONE 7(3):e34170. Abstract

Miller, D. A. W., B. L. Talley, K. R. Lips, and E. H. C. Grant. 2012. Estimating patterns and drivers of infection prevalence and intensity when detection is imperfect and sampling error occurs. Methods in Ecology and Evolution 3(5):850-859. Abstract

Miller, D. A. W., L. A. Weir, B. T. McClintock, E. H. C. Grant, L. L. Bailey, and T. R. Simons. 2012. Experimental investigation of false positive errors in auditory species occurrence surveys. Ecological Applications 22(5):1665–1674. Abstract

Zipkin, E. F., E. H. C. Grant, and W. F. Fagan. 2012. Evaluating the predictive abilities of community occupancy models using AUC while accounting for imperfect detection. Ecological Applications 22(7):1962-1972. Abstract


Grant, E. H. C. 2011. Structural complexity, movement bias, and metapopulation extinction risk in dendritic ecological networks. Journal of the North American Benthological Society 30(1):252-258. Abstract

Brown, B. L., C. M. Swan, D. A. Auerbach, E. H. C. Grant, N. P. Hitt, K. O. Maloney, and C. Patrick. 2011. Metacommunity theory as a multispecies, multiscale framework for studying the influence of river network structure on riverine communities and ecosystems. Journal of the North American Benthological Society 30(1):310-327. Abstract

Gratwicke, B., M. Evans, E. H. C. Grant, J. Greathouse, W. J. McShea, N. Rotzel, and R. C. Fleischer. 2011. Low prevalence of Batrachochytrium dendrobatidis detected in Appalachian salamanders from Warren County, Virginia, USA. Herpetological Review 42(2):217-219.

Kennedy, C. M., E. H. C. Grant, M. C. Neel, W. F. Fagan, and P. P. Marra. 2011. Landscape matrix mediates occupancy dynamics of Neotropical avian insectivores. Ecological Applications 21(5):1837-1850. Abstract

Lynch, H. J., E. H. C. Grant, R. Muneepeerakul, I. Rodriguez-Iturbe, and W. F. Fagan. 2011. How restructuring river connectivity changes freshwater fish biodiversity and biogeography. Water Resources Research 47(W05531) Abstract

Miller, D. A., J. D. Nichols, B. T. McClintock, E. H. C. Grant, L. L. Bailey, and L. A. Weir. 2011. Improving occupancy estimation when two types of observational error occur: non-detection and species misidentification. Ecology 92(7):1422-1428. Abstract


Grant, E. H. C. 2010. [Book review] Amphibian Ecology and Conservation: A Handbook of Techniqnes, edited by C. Kenneth Dodd, Jr. 2009. Oxford·University Press, New York. Herpetological Review 41(3):393-396.

Grant, E. H. C. 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(1):65-67. Abstract

Grant, E. H. C., J. D. Nichols, W. H. Lowe, and W. F. Fagan. 2010. Use of multiple dispersal pathways facilitates amphibian persistence in stream networks. Proceedings of the National Academy of Sciences of the USA 107(15):6936-6940. Abstract

Hossack, B. R., M. J. Adams, E. H. C. Grant, C. A. Pearl, J. B. Bettaso, W. J. Barichivich, W. H. Lowe, K. True, J. L. Ware, and P. S. Corn. 2010. Low prevalence of chytrid fungus (Batrachochytrium dendrobatidis) in amphibians of US headwater streams. Journal of Herpetology 44(2):253-260. Abstract


Grant, E. H. C., L. E. Green, and W. H. Lowe. 2009. Salamander occupancy in headwater stream networks. Freshwater Biology 54(6):1370-1378. Abstract

Mattfeldt, S. D., L. L. Bailey, and E. H. C. Grant. 2009. Monitoring multiple species: Estimating state variables and exploring the efficacy of a monitoring program. Biological Conservation 142(4):720-737. Abstract


Grant, E. H. C. 2008. Visual implant elastomer mark retention through metamorphosis in amphibian larvae. Journal of Wildlife Management 72(5):1247-1252 . Abstract

Grant, E. H. C., L. L. Bailey, J. L. Ware, and K. C. Duncan. 2008. Prevalence of the amphibian pathogen Batrachochytrium dendrobatidis in stream and wetland amphibians in Maryland, USA. Applied Herpetology 5(3):233-241. Abstract

Mattfeldt, S. D., E. H. C. Grant, and L. L. Bailey. 2008. Amphibian Monitoring in the National Capital Region: A focus on lentic and lotic habitats. Natural Resource Technical Report NPS/NCRN/NRTR--2007/001. National Park Service, Center for Urban Ecology, National Capital Region, Washington, DC. viii, 45 pp. Abstract

Nichols, J. D., L. L. Bailey, A. F. O'Connell, Jr., N. W. Talancy, E. H. C. Grant, A. T. Gilbert, E. M. Annand, T. P. Husband, and J. E. Hines. 2008. Multi-scale occupancy estimation and modelling using multiple detection methods. Journal of Applied Ecology 45(5):1321-1329. Abstract

Van Meter, R., L. L. Bailey, and E. H. C. Grant. 2008. Methods for estimating the amount of vernal pool habitat in the northeastern United States. Wetlands 28(3):585-593. Abstract  

back to top

Last Updated: June 2016

Patuxent Research

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster