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
Science and Products
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Methods for estimating the amount of vernal pool habitat in the northeastern United States Methods for estimating the amount of vernal pool habitat in the northeastern United States
The loss of small, seasonal wetlands is a major concern for a variety of state, local, and federal organizations in the northeastern U.S. Identifying and estimating the number of vernal pools within a given region is critical to developing long-term conservation and management strategies for these unique habitats and their faunal communities. We use three probabilistic sampling methods...
Authors
R. Van Meter, L.L. Bailey, E.H.C. Grant
Visual implant elastomer mark retention through metamorphosis in amphibian larvae Visual implant elastomer mark retention through metamorphosis in amphibian larvae
Questions in population ecology require the study of marked animals, and marks are assumed to be permanent and not overlooked by observers. I evaluated retention through metamorphosis of visual implant elastomer marks in larval salamanders and frogs and assessed error in observer identification of these marks. I found 1) individual marks were not retained in larval wood frogs (Rana...
Authors
Evan H. Campbell Grant
Living in the branches: Population dynamics and ecological processes in dendritic networks Living in the branches: Population dynamics and ecological processes in dendritic networks
Spatial structure regulates and modifies processes at several levels of ecological organization (e.g. individual/genetic, population and community) and is thus a key component of complex systems, where knowledge at a small scale can be insufficient for understanding system behaviour at a larger scale. Recent syntheses outline potential applications of network theory to ecological systems...
Authors
E.H.C. Grant, W.H. Lowe, W.F. Fagan
Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders
No abstract available.
Authors
S.D. Mattfeldt, E.H.C. Grant
The Amphibian Research and Monitoring Initiative (ARMI): 5-year report The Amphibian Research and Monitoring Initiative (ARMI): 5-year report
The Amphibian Research and Monitoring Initiative (ARMI) is an innovative, multidisciplinary program that began in 2000 in response to a congressional directive for the Department of the Interior to address the issue of amphibian declines in the United States. ARMI’s formulation was cross-disciplinary, integrating U.S. Geological Survey scientists from Biology, Water, and Geography to...
Authors
Erin Muths, Alisa L. Gallant, Evan H. Campbell Grant, William A. Battaglin, David E. Green, Jennifer S. Staiger, Susan C. Walls, Margaret S. Gunzburger, Rick F. Kearney
Addressing error in identification of Ambystoma maculatum (spotted salamanders) using spot patterns Addressing error in identification of Ambystoma maculatum (spotted salamanders) using spot patterns
No abstract available.
Authors
E.H.C. Grant, P. Nanjappa
Filter Total Items: 15
Science and Products
Filter Total Items: 21
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No Result Found
Filter Total Items: 148
Methods for estimating the amount of vernal pool habitat in the northeastern United States Methods for estimating the amount of vernal pool habitat in the northeastern United States
The loss of small, seasonal wetlands is a major concern for a variety of state, local, and federal organizations in the northeastern U.S. Identifying and estimating the number of vernal pools within a given region is critical to developing long-term conservation and management strategies for these unique habitats and their faunal communities. We use three probabilistic sampling methods...
Authors
R. Van Meter, L.L. Bailey, E.H.C. Grant
Visual implant elastomer mark retention through metamorphosis in amphibian larvae Visual implant elastomer mark retention through metamorphosis in amphibian larvae
Questions in population ecology require the study of marked animals, and marks are assumed to be permanent and not overlooked by observers. I evaluated retention through metamorphosis of visual implant elastomer marks in larval salamanders and frogs and assessed error in observer identification of these marks. I found 1) individual marks were not retained in larval wood frogs (Rana...
Authors
Evan H. Campbell Grant
Living in the branches: Population dynamics and ecological processes in dendritic networks Living in the branches: Population dynamics and ecological processes in dendritic networks
Spatial structure regulates and modifies processes at several levels of ecological organization (e.g. individual/genetic, population and community) and is thus a key component of complex systems, where knowledge at a small scale can be insufficient for understanding system behaviour at a larger scale. Recent syntheses outline potential applications of network theory to ecological systems...
Authors
E.H.C. Grant, W.H. Lowe, W.F. Fagan
Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders Are two methods better than one? Area constrained transects and leaf litterbags for sampling stream salamanders
No abstract available.
Authors
S.D. Mattfeldt, E.H.C. Grant
The Amphibian Research and Monitoring Initiative (ARMI): 5-year report The Amphibian Research and Monitoring Initiative (ARMI): 5-year report
The Amphibian Research and Monitoring Initiative (ARMI) is an innovative, multidisciplinary program that began in 2000 in response to a congressional directive for the Department of the Interior to address the issue of amphibian declines in the United States. ARMI’s formulation was cross-disciplinary, integrating U.S. Geological Survey scientists from Biology, Water, and Geography to...
Authors
Erin Muths, Alisa L. Gallant, Evan H. Campbell Grant, William A. Battaglin, David E. Green, Jennifer S. Staiger, Susan C. Walls, Margaret S. Gunzburger, Rick F. Kearney
Addressing error in identification of Ambystoma maculatum (spotted salamanders) using spot patterns Addressing error in identification of Ambystoma maculatum (spotted salamanders) using spot patterns
No abstract available.
Authors
E.H.C. Grant, P. Nanjappa
Filter Total Items: 15