USGS Professional Pages
Research Wildlife BiologistContact Info
PhD, 2009, University of Maryland College Park, Program of Marine, Estuarine and Environmental Sciences and Department of Entomology
BS, 2001, Cornell University, Natural Resources, with Distinction in Research
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AB Brand, Wiewel, ANM, and EHC Grant. Potential for reduction in terrestrial salamander ranges associated with Marcellus shale development. Biological Conservation
Grant, EHC. Please don’t misuse the museum: declines may be statistical. Global Change Biology
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
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
Grant, EHC, ANM Wiewel, KC Rice. 2014. Stream temperature limits occupancy of salamanders. Journal of Herpetology 48: 45-50
Grant, EHC, EF Zipkin, JD Nichols, JP Campbell. 2013. A strategy for monitoring and managing declines in an amphibian community. Conservation Biology 27: 1245-1253
Green, AW, MB Hooten, EHC Grant, and LL Bailey. 2013. Hierarchical Bayesian estimation of wood frog (Lithobates sylvatica) breeding and metamorph occupancy. Journal of Applied Ecology 50:1116-1123
Adams, MJ, DAW Miller, E Muths, PS Corn, EHC Grant, LL Bailey, GM Fellers, RN Fisher, WJ Sadinski, H Waddle, SC Walls. 2013. Trends in amphibian occupancy in the US. PLoS ONE 8(5): e64347. doi:10.1371/journal.pone.0064347
Kendall, WL, JE Hines, JD Nichols and EHC Grant. 2013. Relaxing the closure assumption in single-season occupancy models: staggered arrival and departure times. Ecology 94: 610-617
Yackulic, CB, R Chandler, EF Zipkin, JA Royle, JD Nichols, EHC Grant and S Veran. 2013. Presence-only models: can we trust the inferences? Methods in Ecology and Evolution 4: 236-243.
Grant, EHC, ANM Wiewel, KC Rice. Stream temperature limits occupancy of salamanders. In press. Journal of Herpetology.
Miller, DA, BL Talley, KR Lips, EHC Grant. 2012. Detection matters in wildlife epidemiological studies: accounting for sensitivity when estimating disease parameters. In press, Methods in Ecology and Evolution.
Zipkin, EF, WF Fagan and EHC Grant. 2012. Did we get it right? Evaluating predictions of species’ distribution while incorporating uncertainty. In press, Ecological Applications, http://dx.doi.org/10.1890/11-1936.1.
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. In press Ecological Applications,
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. Low prevalence ofBatrachochytrium dendrobatidis detected in Appalachian salamanders from Warren County, Virginia, USA. Herpetological Review 42(2), 217–219
Kennedy, CM, EHC Grant, WF Fagan, PP Marra and MC Neel. Landscape matrix mediates occupancy dynamics of neotropical avian insectivores. In press, Ecological Applications.
Lynch, HJ, EHC Grant, R Muneepeerakul, M Arunachalam, I Rodriguez-Iturbe and WF Fagan. How restructuring river connectivity changes freshwater fish biodiversity and biogeography. In press, Water Resources Research.
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 Society30:232-234
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.
Fagan, WF, EHC Grant, HJ Lynch & PJ Unmack. 2009. Riverine landscapes: ecology for an alternative geometry. Pages 85-101 In Cantrell, RS and C Cosner (eds.), Spatial Ecology. Academic Press.
Grant, EHC, LE Green and WH Lowe. 2009. Salamander occupancy in dendritic ecological networks. Freshwater Biology 54: 1370-1378
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
Grant, EHC. 2008. Assessing visual implant elastomer mark retention in amphibian larvae through metamorphosis. Journal of Wildlife Management 72:1247-52.
Grant, EHC, LL Bailey, JL Ware, and KC Duncan. 2008. The amphibian pathogen Batrachochytrium dendrobatidis detected in a community of stream and wetland amphibians. Applied Herpetology 5: 233-241
Nichols, JD, LL Bailey, AF O’Connell, Jr., NW Talancy, EHC Grant, AT Gilbert, EM Annand, TP Husband and JE Hines. 2008. Multi-scale occupancy estimation and modeling using multiple detection methods. Journal of Applied Ecology. 45:1321-1329
Van Meter, R., LL Bailey, and EHC Grant. Methods for Estimating the Amount of Vernal Pool Habitat in the Northeastern United States. Wetlands 28: 585-593
Grant, EHC, WH Lowe and WF Fagan. 2007. Living in the branches: population dynamics and ecological processes in dendritic networks. Ecology Letters 10: 165-175.
SD Mattfeldt and EHC Grant. 2007. Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders. Herpetological Review 38: 43-45
Muths, E, AL Gallant, EHC Grant, WA Battaglin, DE Green, J Staiger, S Walls, M. Gunzburger and R Kearney. 2006. Amphibian Research and Monitoring Initiative: 5 year report. U.S. Geological Survey Scientific Investigations Report 2006-5224, 77 p.
Grant, EHC and P Nanjappa. 2006. Individual identification of spotted salamanders (Ambystoma maculatum) using spot patterns with recommendations for an improved method. Herpetological Review 37:57-60.
Grant, EHC. 2005. Correlates of vernal pool occurrence in a Massachusetts landscape. Wetlands. 25: 480-487.
Grant, EHC, RE Jung, and KC Rice. 2005. Stream Salamander Species Richness and Abundance in Relation to Environmental Factors in Shenandoah National Park, Virginia. American Midland Naturalist 153: 348-356.
Grant, EHC, RE Jung, JD Nichols and JE Hines. 2005. Double observer counts of egg masses. Wetlands Ecology and Management 13: 305-320.
My Science Topics
My USGS Science Strategy AreasUnderstanding Ecosystems & Predicting Ecosystems Change
Climate Variability & Change
Amphibian Research and Monitoring
Movement ecology of stream salamanders
Dendritic network ecology
Dynamics of vernal pool breeding amphibian populations
Management of amphibian populations in the National Capital Region Network of National Parks
Planning a management response to population change in the endangered Shenandoah salamander
Areas of interest:
I am the principle investigator of the US Geological Survey’s Amphibian Research and Monitoring Initiative, northeast region (BRD). My research focuses on questions relating to amphibian populations, specifically with respect to their landscape-scale ecology and conservation. My work is focused on monitoring and research questions which can aid resource managers and conservationists.
1 Migratory Way
Turners Falls, MA 01376
413-863-9810 - Fax
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