Hardin Waddle, Ph.D.
Hardin Waddle currently works as a research ecologist for the USGS, where he serves as the principal investigator for the south-central region of the Amphibian Research and Monitoring Initiative (ARMI). His research interests include population ecology and conservation of amphibians and reptiles, primarily in the wetlands and swamps of the southeastern United States.
EDUCATION
Ph.D., Wildlife Ecology, University of Florida, 2006
M.S. Biology, Florida International University, 2000
B.S., Wildlife Science, Auburn University, 1996
Science and Products
Filter Total Items: 19
Filter Total Items: 29
No Result Found
Filter Total Items: 76
Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines
Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a “smoking gun” was replaced with the expectation that declines are caused by multiple drivers. While field observations and experiments have identified factors leading to increased...
Authors
Evan H. Campbell Grant, David A. W. Miller, Benedikt R. Schmidt, M. J. Adams, Staci M. Amburgey, Thierry A. Chambert, Sam S. Cruickshank, Robert N. Fisher, David M. Green, Blake R. Hossack, Pieter T.J. Johnson, Maxwell B. Joseph, Tracy A. G. Rittenhouse, Maureen E. Ryan, J. Hardin Waddle, Susan C. Walls, Larissa L. Bailey, Gary M. Fellers, Thomas A. Gorman, Andrew M. Ray, David S. Pilliod, Steven J. Price, Daniel Saenz, Walt Sadinski, Erin L. Muths
First documented case of snake fungal disease in a free-ranging wild snake in Louisiana First documented case of snake fungal disease in a free-ranging wild snake in Louisiana
Snake fungal disease (SFD) is a recently documented mycotic disease characterized by scabs or crusty scales, subcutaneous nodules, abnormal molting, cloudiness of the eyes (not associated with molting), and localized thickening or crusting of the skin. SFD has been documented in many species in the Eastern and Midwestern United States within the last decade. SFD has proven lethal in many...
Authors
Brad M. Glorioso, J. Hardin Waddle, David E. Green, Jeffrey M. Lorch
Hyla chrysoscelis (Cope’s gray treefrog) x Hyla cinerea (green treefrog): putative natural hybrid Hyla chrysoscelis (Cope’s gray treefrog) x Hyla cinerea (green treefrog): putative natural hybrid
Naturally–occurring hybrid treefrogs have been occasionally found in the eastern United States. However, these hybrids are almost always between members of the same species group. On 10 Jun 2014, at 2145 h, we located an individual making an unusual advertisement call along Bayou Manual Road in Sherburne Wildlife Management Area in the Atchafalaya Basin of south-central Louisiana, USA...
Authors
Brad M. Glorioso, J. Hardin Waddle, Jill A. Jenkins, Heather M. Olivier, Rebekah R. Layton
Dry years decrease abundance of American alligators in the Florida Everglades Dry years decrease abundance of American alligators in the Florida Everglades
The Everglades has been greatly reduced and is threatened by land use change and altered hydrology. The Comprehensive Everglades Restoration Plan calls for monitoring and assessment of key ecosystem attributes, one of which is abundance of American alligators. We examined 10 years of alligator night spotlight counts from Arthur R. Marshall Loxahatchee National Wildlife Refuge along two...
Authors
J. Hardin Waddle, Laura A. Brandt, Brian M. Jeffery, Frank J. Mazzotti
Reproductive biology of Ambystoma salamanders in the southeastern United States Reproductive biology of Ambystoma salamanders in the southeastern United States
Reproductive aspects of Ambystoma salamanders were investigated at sites in Louisiana (2010–12) and Mississippi (2013). Three species occurred at the Louisiana site, Spotted Salamander (A. maculatum), Marbled Salamander (A. opacum), and Mole Salamander (A. talpoideum), whereas only Spotted Salamanders were studied at the Mississippi site. A total of 162 and 71 egg masses of Spotted...
Authors
Brad M. Glorioso, J. Hardin Waddle, J. M. Hefner
Testing hypotheses on distribution shifts and changes in phenology of imperfectly detectable species Testing hypotheses on distribution shifts and changes in phenology of imperfectly detectable species
With ongoing climate change, many species are expected to shift their spatial and temporal distributions. To document changes in species distribution and phenology, detection/non-detection data have proven very useful. Occupancy models provide a robust way to analyse such data, but inference is usually focused on species spatial distribution, not phenology.We present a multi-season...
Authors
Thierry A. Chambert, William L. Kendall, James E. Hines, James D. Nichols, Paolo Pedrini, J. Hardin Waddle, Giacomo Tavecchia, Susan C. Walls, Simone Tenan
Science and Products
Filter Total Items: 19
Filter Total Items: 29
No Result Found
Filter Total Items: 76
Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines
Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a “smoking gun” was replaced with the expectation that declines are caused by multiple drivers. While field observations and experiments have identified factors leading to increased...
Authors
Evan H. Campbell Grant, David A. W. Miller, Benedikt R. Schmidt, M. J. Adams, Staci M. Amburgey, Thierry A. Chambert, Sam S. Cruickshank, Robert N. Fisher, David M. Green, Blake R. Hossack, Pieter T.J. Johnson, Maxwell B. Joseph, Tracy A. G. Rittenhouse, Maureen E. Ryan, J. Hardin Waddle, Susan C. Walls, Larissa L. Bailey, Gary M. Fellers, Thomas A. Gorman, Andrew M. Ray, David S. Pilliod, Steven J. Price, Daniel Saenz, Walt Sadinski, Erin L. Muths
First documented case of snake fungal disease in a free-ranging wild snake in Louisiana First documented case of snake fungal disease in a free-ranging wild snake in Louisiana
Snake fungal disease (SFD) is a recently documented mycotic disease characterized by scabs or crusty scales, subcutaneous nodules, abnormal molting, cloudiness of the eyes (not associated with molting), and localized thickening or crusting of the skin. SFD has been documented in many species in the Eastern and Midwestern United States within the last decade. SFD has proven lethal in many...
Authors
Brad M. Glorioso, J. Hardin Waddle, David E. Green, Jeffrey M. Lorch
Hyla chrysoscelis (Cope’s gray treefrog) x Hyla cinerea (green treefrog): putative natural hybrid Hyla chrysoscelis (Cope’s gray treefrog) x Hyla cinerea (green treefrog): putative natural hybrid
Naturally–occurring hybrid treefrogs have been occasionally found in the eastern United States. However, these hybrids are almost always between members of the same species group. On 10 Jun 2014, at 2145 h, we located an individual making an unusual advertisement call along Bayou Manual Road in Sherburne Wildlife Management Area in the Atchafalaya Basin of south-central Louisiana, USA...
Authors
Brad M. Glorioso, J. Hardin Waddle, Jill A. Jenkins, Heather M. Olivier, Rebekah R. Layton
Dry years decrease abundance of American alligators in the Florida Everglades Dry years decrease abundance of American alligators in the Florida Everglades
The Everglades has been greatly reduced and is threatened by land use change and altered hydrology. The Comprehensive Everglades Restoration Plan calls for monitoring and assessment of key ecosystem attributes, one of which is abundance of American alligators. We examined 10 years of alligator night spotlight counts from Arthur R. Marshall Loxahatchee National Wildlife Refuge along two...
Authors
J. Hardin Waddle, Laura A. Brandt, Brian M. Jeffery, Frank J. Mazzotti
Reproductive biology of Ambystoma salamanders in the southeastern United States Reproductive biology of Ambystoma salamanders in the southeastern United States
Reproductive aspects of Ambystoma salamanders were investigated at sites in Louisiana (2010–12) and Mississippi (2013). Three species occurred at the Louisiana site, Spotted Salamander (A. maculatum), Marbled Salamander (A. opacum), and Mole Salamander (A. talpoideum), whereas only Spotted Salamanders were studied at the Mississippi site. A total of 162 and 71 egg masses of Spotted...
Authors
Brad M. Glorioso, J. Hardin Waddle, J. M. Hefner
Testing hypotheses on distribution shifts and changes in phenology of imperfectly detectable species Testing hypotheses on distribution shifts and changes in phenology of imperfectly detectable species
With ongoing climate change, many species are expected to shift their spatial and temporal distributions. To document changes in species distribution and phenology, detection/non-detection data have proven very useful. Occupancy models provide a robust way to analyse such data, but inference is usually focused on species spatial distribution, not phenology.We present a multi-season...
Authors
Thierry A. Chambert, William L. Kendall, James E. Hines, James D. Nichols, Paolo Pedrini, J. Hardin Waddle, Giacomo Tavecchia, Susan C. Walls, Simone Tenan