Evan Grant, Ph.D.
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
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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 Salamander (Plethodon shenandoah), an endangered pl
Authors
Staci M. Amburgey, David A. W. Miller, Adrianne B. Brand, Andrew E Dietrich, Evan H. Campbell Grant
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 difficult to extrapolate the effects of fragmentat
Authors
AD Wright, Evan H. Campbell Grant, EF Zipkin
Mapping climate change resistant vernal pools in the northeastern U.S.
Vernal pools are seasonal wetlands that provide important breeding habitat for a variety of amphibian species. As future climate projections indicate warmer growing seasons and earlier seasonal increases in evapotranspiration, some managers of vernal pools have expressed concern that pools may dry earlier in the season, potentially interfering with completion of amphibian life cycles. In this cont
Authors
Jennifer M. Cartwright, Evan H. Campbell Grant
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 management. However, in many cases, each of these collab
Authors
B. A. Mosher, R. F. Bernard, Jeffrey M. Lorch, D. A. W. Miller, Katherine L. D. Richgels, C. LeAnn White, Evan H. Campbell Grant
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 challenge is exemplified in the response to white‐nose syn
Authors
Riley Fehr Bernard, Jonah Evans, Nathan W. Fuller, Jonathan D. Reichard, Jeremy T. H. Coleman, Christina J. Kocer, Evan H. Campbell Grant
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 reactive management approaches are not sufficient for
Authors
SC Sterrett, Evan H. Campbell Grant, Katz R, Adrianne Brand, William R. Fields, Dietrich A, Hocking D, Foreman T, Wiewel A
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 epizootic and enzootic disease dynamics. For example, w
Authors
Evan H. Campbell Grant, Direnzo G
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 research does not necessarily lead to solutions. We use
Authors
Evan H. Campbell Grant, Erin L. Muths, Benedikt R. Schmidt, Silviu Petrovan
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 how survival of wild hosts is affected. We applied hierarchica
Authors
Robin E. Russell, Brian J. Halstead, Brittany Mosher, Erin L. Muths, Michael J. Adams, Evan H. Campbell Grant, Robert N. Fisher, Patrick M. Kleeman, Adam R. Backlin, Christopher Pearl, R. Ken Honeycutt, Blake R. Hossack
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 conservation of species will only be possible throu
Authors
Sarah J. Converse, Evan H. Campbell Grant
Knowing your limits: Estimating range boundaries and co-occurrence zones for two competing plethodontid salamanders
Understanding threats to species persistence requires knowledge of where species currently occur. We explore methods for estimating two important facets of species distributions, namely where the range limit occurs and how species interactions structure distributions. Accurate understanding of range limits is crucial for predicting range dynamics and shifts in response to interspecific interaction
Authors
S. M. Amburgey, D. A. W. Miller, Adrianne B. Brand, Andrea M. Dietrich, Evan H. Campbell Grant
Identifying common decision problem elements for the management of emerging fungal diseases of wildlife
Emerging infectious diseases (EIDs) of wildlife have characteristics that make them difficult to manage, leading to reactive and often ineffective management strategies. Currently, two fungal pathogens, Pseudogymnoascus destructans (Pd) and Batrachochytrium salamandrivorans (Bsal), are causing declines in novel host species. To improve the application of management strategies addressing the risk o
Authors
R. F. Bernard, Evan H. Campbell Grant
Science and Products
Filter Total Items: 20
Filter Total Items: 19
No Result Found
Filter Total Items: 137
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 Salamander (Plethodon shenandoah), an endangered pl
Authors
Staci M. Amburgey, David A. W. Miller, Adrianne B. Brand, Andrew E Dietrich, Evan H. Campbell Grant
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 difficult to extrapolate the effects of fragmentat
Authors
AD Wright, Evan H. Campbell Grant, EF Zipkin
Mapping climate change resistant vernal pools in the northeastern U.S.
Vernal pools are seasonal wetlands that provide important breeding habitat for a variety of amphibian species. As future climate projections indicate warmer growing seasons and earlier seasonal increases in evapotranspiration, some managers of vernal pools have expressed concern that pools may dry earlier in the season, potentially interfering with completion of amphibian life cycles. In this cont
Authors
Jennifer M. Cartwright, Evan H. Campbell Grant
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 management. However, in many cases, each of these collab
Authors
B. A. Mosher, R. F. Bernard, Jeffrey M. Lorch, D. A. W. Miller, Katherine L. D. Richgels, C. LeAnn White, Evan H. Campbell Grant
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 challenge is exemplified in the response to white‐nose syn
Authors
Riley Fehr Bernard, Jonah Evans, Nathan W. Fuller, Jonathan D. Reichard, Jeremy T. H. Coleman, Christina J. Kocer, Evan H. Campbell Grant
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 reactive management approaches are not sufficient for
Authors
SC Sterrett, Evan H. Campbell Grant, Katz R, Adrianne Brand, William R. Fields, Dietrich A, Hocking D, Foreman T, Wiewel A
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 epizootic and enzootic disease dynamics. For example, w
Authors
Evan H. Campbell Grant, Direnzo G
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 research does not necessarily lead to solutions. We use
Authors
Evan H. Campbell Grant, Erin L. Muths, Benedikt R. Schmidt, Silviu Petrovan
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 how survival of wild hosts is affected. We applied hierarchica
Authors
Robin E. Russell, Brian J. Halstead, Brittany Mosher, Erin L. Muths, Michael J. Adams, Evan H. Campbell Grant, Robert N. Fisher, Patrick M. Kleeman, Adam R. Backlin, Christopher Pearl, R. Ken Honeycutt, Blake R. Hossack
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 conservation of species will only be possible throu
Authors
Sarah J. Converse, Evan H. Campbell Grant
Knowing your limits: Estimating range boundaries and co-occurrence zones for two competing plethodontid salamanders
Understanding threats to species persistence requires knowledge of where species currently occur. We explore methods for estimating two important facets of species distributions, namely where the range limit occurs and how species interactions structure distributions. Accurate understanding of range limits is crucial for predicting range dynamics and shifts in response to interspecific interaction
Authors
S. M. Amburgey, D. A. W. Miller, Adrianne B. Brand, Andrea M. Dietrich, Evan H. Campbell Grant
Identifying common decision problem elements for the management of emerging fungal diseases of wildlife
Emerging infectious diseases (EIDs) of wildlife have characteristics that make them difficult to manage, leading to reactive and often ineffective management strategies. Currently, two fungal pathogens, Pseudogymnoascus destructans (Pd) and Batrachochytrium salamandrivorans (Bsal), are causing declines in novel host species. To improve the application of management strategies addressing the risk o
Authors
R. F. Bernard, Evan H. Campbell Grant