USGS - science for a changing world

USGS Professional Pages

Blank space
Search USGS Professionals Featured Profiles Blank space Frequently Asked Questions  |  About The USGS Professional Pages
bio image of Evan  Grant

Evan Grant

Research Wildlife Biologist

Contact Info

Short Biography

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

Read Full Professional Summary


ResearcherID: N-5160-2014

Research Gate profile:



Eros, T and EHC Grant. Unifying terrestrial and aquatic habitat fragmentation research: Where to find, and what to do with, the matrix in riverscapes. Freshwater Biology 60: 1487–1501

Miller, DAW, LL Bailey, EHC Grant, BT McClintock, LA Weir, and TR Simons. Comparison of approaches to improve estimates of occupancy when detection heterogeneity and false positives occur. Methods in Ecology and Evolution 6: 557–565

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

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

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,

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

Science Topic
Ecology and Environmentaquatic ecosystems
Ecology and Environmentbiodiversity
Ecology and Environmentecological processes
Ecology and Environmentforests
Ecology and Environmentfreshwater ecosystems
Ecology and Environmenthabitat alteration
Ecology and Environmentwetlands

My USGS Science Strategy Areas

Understanding Ecosystems & Predicting Ecosystems Change

Climate Variability & Change

Amphibian Research and Monitoring

Active projects:

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:

Image of 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.

Contact Information

Evan Grant
1 Migratory Way
Turners Falls, MA 01376
413-863-9810 - Fax
Back to top

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:Ask USGS
Page Last Modified: January 24 2013 17:21:51.
Version: 2.6