Evan Grant, Ph.D.
Biography
Evan Grant the principle investigator of the US Geological Survey’s Amphibian Research and Monitoring Initiative (ARMI), northeast region. Evan's research focuses on questions relating to amphibian populations, specifically with respect to their landscape-scale ecology. Evan also uses decision science to aid resource managers.
Education:
- 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
ResearcherID: N-5160-2014
Research Gate profile: http://www.researchgate.net/profile/Evan_Grant2
Science and Products
A synthesis of evidence of drivers of amphibian declines
Early calls for robust long-term time series of amphibian population data, stemming from discussion following the first World Congress of Herpetology, are now being realized after 25 yr of focused research. Inference from individual studies and locations have contributed to a basic consensus on drivers of amphibian declines. Until recently there...
Grant, Evan H.; Miller, D. A. W.; Muths, Erin L.
Assessing the risks posed by SARS-CoV-2 in and via North American bats—Decision framing and rapid risk assessment
The novel β-coronavirus, SARS-CoV-2, may pose a threat to North American bat populations if bats are exposed to the virus through interaction with humans, if the virus can subsequently infect bats and be transmitted among them, and if the virus causes morbidity or mortality in bats. Further, if SARS-CoV-2 became established in bat populations, it...
Runge, Michael C.; Campbell Grant, Evan H.; Coleman, Jeremy T. H.; Reichard, Jonathan D.; Gibbs, Samantha E. J.; Cryan, Paul M.; Olival, Kevin J.; Walsh, Daniel P.; Blehert, David S.; Hopkins, M. Camille; Sleeman, Jonathan M. Identifying research needs to inform white-nose syndrome management decisions
Ecological understanding of host–pathogen dynamics is the basis for managing wildlife diseases. Since 2008, federal, state, and provincial agencies and tribal and private organizations have collaborated on bat and white‐nose syndrome (WNS) surveillance and monitoring, research, and management programs. Accordingly, scientists and managers have...
Bernard, Riley; Reichard, Jonathan D.; Coleman, Jeremy T. H.; Blackwood, Julie C.; Verant, Michelle L.; Segers, Jordi; Lorch, Jeffery M.; White, John Paul; Moore, M.S.; Russell, Amy L.; Katz, Rachel A.; Linder, Daniel L.; Toomey, Rick S.; Turner, Gregory G.; Frick, Winifred F.; Vonhof, Maarten J.; Willis, Craig K.R.; Campbell Grant, Evan H. Factors facilitating co-occurrence at the Range Boundary of Shenandoah and Red-backed Salamanders
The transition from species in allopatry to sympatry, i.e., the co-occurrence zone of competing species, allows for investigation of forces structuring range limits and provides evidence of the evolutionary and population responses of competing species, including mechanisms facilitating co-occurrence (e.g., character displacement). The Shenandoah...
Amburgey, Staci M.; Miller, David A. W.; Brand, Adrianne B.; Dietrich, Andrew E; Campbell Grant, Evan H. A hierarchical analysis of habitat area, connectivity, and quality on amphibian diversity across spatial scales
Habitat fragmentation can alter species distributions and lead to reduced diversity at multiple scales. Yet, the literature describing fragmentation effects on biodiversity patterns is contradictory and inconclusive, possibly because most studies fail to integrate spatial scale into experimental designs and statistical analyses. As a result, it is...
Wright, AD; Campbell Grant, Evan H.; Zipkin, EF Successful molecular detection studies require clear communication among diverse research partners
Molecular detection techniques are powerful tools used in ecological applications ranging from diet analyses to pathogen surveillance. Research partnerships that use these tools often involve collaboration among professionals with expertise in field biology, laboratory techniques, quantitative modeling, wildlife disease, and natural resource...
Mosher, B. A.; Bernard, R. F.; Lorch, Jeffrey M.; Miller, D. A. W.; Richgels, Katherine L. D.; White, C. LeAnn; Campbell Grant, Evan H. Different management strategies are optimal for combating disease in East Texas cave versus culvert hibernating bat populations
Management decisions for species impacted by emerging infectious diseases are challenging when there are uncertainties in the effectiveness of management actions. Wildlife managers must balance trade‐offs between mitigating the effects of the disease and the associated consequences on other aspects of the managed system. An example of this...
Bernard, Riley Fehr; Evans, Jonah; Fuller, Nathan W.; Reichard, Jonathan D.; Coleman, Jeremy T. H.; Kocer, Christina J.; Campbell Grant, Evan H. Overview of emerging amphibian pathogens and modeling advances for conservation-related decisions
One of the leading causes of global amphibian decline is emerging infectious disease. We summarize the disease ecology of four major emerging amphibian infectious agents: chytrids, ranaviruses, trematodes, and Perkinsea. We focus on recently developed quantitative advances that build on well-established ecological theories and aid in studying...
Campbell Grant, Evan H.; Direnzo G Proactive management of amphibians: Challenges and opportunities
Delaying species management reduces the chance of successful recovery, increases the risk of extinction, and can be expensive. Acting before major declines are realized affords access to a greater suite of cost-effective management actions to sustain populations, reducing the likelihood of declines warranting protected status. It is clear that...
Sterrett, SC; Campbell Grant, Evan H.; Katz R; Brand, Adrianne; Fields, William R.; Dietrich A; Hocking D; Foreman T; Wiewel A Amphibian conservation in the Anthropocene
Research is necessary to identify patterns in nature, to understand how a system functions, and to make predictions about the future state of an ecosystem. Applied research in conservation biology can identify effective strategies to maintain biodiversity, though many papers end with the conclusion that more research is needed. However, more...
Campbell Grant, Evan H.; Muths, Erin L.; Schmidt, Benedikt R.; Petrovan, Silviu Effect of amphibian chytrid fungus (Batrachochytrium dendrobatidis) on apparent survival of frogs and toads in the western USA
Despite increasing interest in determining the population-level effects of emerging infectious diseases on wildlife, estimating effects of disease on survival rates remains difficult. Even for a well-studied disease such as amphibian chytridiomycosis (caused by the fungus Batrachochytrium dendrobatidis [Bd]), there are few estimates of...
Russell, Robin E.; Halstead, Brian J.; Mosher, Brittany; Muths, Erin L.; Adams, Michael J.; Campbell Grant, Evan H.; Fisher, Robert N.; Kleeman, Patrick M.; Backlin, Adam R.; Pearl, Christopher; Honeycutt, R. Ken; Hossack, Blake R. A three-pipe problem: Dealing with complexity to halt amphibian declines
Natural resource managers are increasingly faced with threats to managed ecosystems that are largely outside of their control. Examples include land development, climate change, invasive species, and emerging infectious diseases. All of these are characterized by large uncertainties in timing, magnitude, and effects on species. In many cases, the...
Converse, Sarah J.; Campbell Grant, Evan H.