Patrick M Kleeman
Patrick Kleeman is a Supervisory Ecologist at the Western Ecological Research Center.
Patrick Kleeman's research focuses on the ecology and conservation biology of amphibians. Topics of study within these categories include population demography through capture-mark-recapture methods, habitat use by using radiotelemetry, and phenology of breeding as evidenced by vocalizations. His research also examines what role stressors such as environmental contaminants, disease, and climate may have on amphibian populations. In addition to amphibians, he also works with island night lizards (Xantusia riversiana) on San Nicolas Island and Townsend's big-eared bats (Corynorhinus townsendii) at Point Reyes National Seashore.
EDUCATION
- B.A. in Biology, University of Colorado, Boulder, 1988
- M.S. in Wildlife Management, Humboldt State University, 1999
Science and Products
Filter Total Items: 30
USGS Occupancy Surveys for Dixie Valley Toads, Anaxyrus williamsi, in Churchill County, Nevada from April 2018 to May 2021 USGS Occupancy Surveys for Dixie Valley Toads, Anaxyrus williamsi, in Churchill County, Nevada from April 2018 to May 2021
Desert spring wetlands host many endemic species that require aquatic habitat and are isolated by the surrounding xeric terrestrial habitat. The Dixie Valley Toad (Anaxyrus williamsi) is a recently described anuran species endemic to desert spring wetlands in the Dixie Valley, Churchill County, Nevada, USA. Given this species was only recently recognized as distinct from Anaxyrus boreas...
Temperature and Relative Conductivity at Sampling Locations in the Dixie Valley, Churchill County, Nevada, 2019-2021 Temperature and Relative Conductivity at Sampling Locations in the Dixie Valley, Churchill County, Nevada, 2019-2021
These data provide temperatures and relative conductivity to determine the presence or absence of water at specific locations in Dixie Meadows, Dixie Valley, Churchill County, Nevada, 2019-2021.
Concentrations of pesticides in silicone bands as passive samplers and sediment in Pinnacles National Park and Bureau of Land Management lands in San Benito County, California, 2019-2021 Concentrations of pesticides in silicone bands as passive samplers and sediment in Pinnacles National Park and Bureau of Land Management lands in San Benito County, California, 2019-2021
To better understand the potential pesticide exposure, samples were collected from locations along two creeks in Pinnacles National Park and four creeks in nearby Bureau of Land Management (BLM) lands. Silicone bands were used as passive sampling devices (PSD) staked in the creek and above in the air (above the water line). Sampling was conducted in the summer from 2019 to 2021. PSDs...
Western Spadefoot Survey Data in Northern and Central California (2019) Western Spadefoot Survey Data in Northern and Central California (2019)
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species. Multi-scale processes can be particularly important for these species, where small-scale patterns in specific habitat components can affect the distribution of one life stage...
Amphibian chytrid swab data from Mendocino County, California (2016 - 2020) Amphibian chytrid swab data from Mendocino County, California (2016 - 2020)
This dataset includes results from external skin swabbing of Rana boylii and Dicamptodon tenebrosus to test for the fungus Batrachochytrium dendrobatidis from Fox Creek in Mendocino County, California, in 2016-2020. Morphological measurements of swabbed animals were recorded, and Rana boylii had a unique identifier (pit tag) inserted beneath their skin for identification in future...
Northwestern Pond Turtle Survey Data in Northern California Forest Streams (2021) Northwestern Pond Turtle Survey Data in Northern California Forest Streams (2021)
These data are from joint visual encounter and environmental DNA (eDNA) surveys conducted for northwestern pond turtles (Actinemys marmorata) in streams on privately-owned timberlands in northern California.
Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021) Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021)
This dataset includes results from external skin swabbing of Anaxyrus williamsi and Lithobates catesbeianus to test for the fungus Batrachochytrium dendrobatidis from the Dixie Valley in Churchill County, Nevada, in 2019-2021.
Western Spadefoot Habitat Selection Based on Radio Telemetry in Orange County, California 2019 Western Spadefoot Habitat Selection Based on Radio Telemetry in Orange County, California 2019
We conducted a radio telemetry study of adult western spadefoots (Spea hammondii) at 2 sites in southern California to characterize their survival, behavior, and movements from breeding through aestivation to inform conservation and management for the species. These data support the following publication: Halstead, B.J., Baumberger, K.L., Backlin, A.R., Kleeman, P.M., Wong, M.N...
Shasta Salamanders Surveys for the Shasta-Trinity National Forest (ver. 2.0, July 2020) Shasta Salamanders Surveys for the Shasta-Trinity National Forest (ver. 2.0, July 2020)
The Shasta salamander (Hydromantes shastae) has been petitioned for listing under the Endangered Species Act. The greatest threat to the species is likely habitat loss that will be caused by the increase in elevation of Shasta Lake that will occur with proposed increases in the height of Shasta Dam to increase water storage capacity and maintain cold water for Chinook salmon...
Characteristics of Sites Sampled for eDNA of Amphibians in Mendocino County, California, 2016 Characteristics of Sites Sampled for eDNA of Amphibians in Mendocino County, California, 2016
Stream-obligate amphibians are important indicators of ecosystem health in the Pacific Northwest, but distributional information to improve forest management is lacking in many regions. We analyzed archived DNA extracted from water samples in 60 pools within streams in private timberlands in Mendocino County, California, for 3 California Species of Special Concern - Coastal Tailed Frogs...
Site and Survey Data for Dixie Valley Toads in Churchill County, Nevada, 2019 Site and Survey Data for Dixie Valley Toads in Churchill County, Nevada, 2019
These data include site- and survey-specific information for occupancy surveys of Dixie Valley Toads (Anaxyrus williamsi) collected in the Dixie Valley, Churchill County, Nevada, in May 2019. The data include both multiple surveys of the same sites and time-to-detection information to quantify detection probabilities and account for imperfect detection in assessments of Dixie Valley Toad...
Site and Survey Data for Amphibian Surveys in Yosemite National Park, 2018 Site and Survey Data for Amphibian Surveys in Yosemite National Park, 2018
These data represent occupancy surveys conducted in long-term monitoring sites in Yosemite National Park in 2018 for three anurans, the Yosemite Toad (Anaxyrus canorus), the Sierran Treefrog (Pseudacris sierra), and the Sierra Nevada Yellow-legged Frog (Rana sierrae). The data include independent double-observer surveys and time-to-detection data to calculate detection probabilities and...
Filter Total Items: 47
Sierra Nevada amphibians demonstrate stable occupancy despite precipitation volatility in the early 21st Century Sierra Nevada amphibians demonstrate stable occupancy despite precipitation volatility in the early 21st Century
Climate can have a strong influence on species distributions, and amphibians with different life histories might be affected by annual variability in precipitation in different ways. The Sierra Nevada of California, United States, experienced some of the driest and wettest years on record in the early 21st Century, with variability in annual precipitation predicted to increase with...
Authors
Brian J. Halstead, Patrick M. Kleeman, Jonathan P. Rose, Gary M. Fellers
Hot, wet and rare: Modelling the occupancy dynamics of the narrowly distributed Dixie Valley toad Hot, wet and rare: Modelling the occupancy dynamics of the narrowly distributed Dixie Valley toad
Context: Small population sizes and no possibility of metapopulation rescue put narrowly distributed endemic species under elevated risk of extinction from anthropogenic change. Desert spring wetlands host many endemic species that require aquatic habitat and are isolated by the surrounding xeric terrestrial habitat. Aims: We sought to model the occupancy dynamics of the Dixie Valley...
Authors
Jonathan P. Rose, Patrick M. Kleeman, Brian J. Halstead
Optimizing survey design for shasta salamanders (Hydromantes spp.) to estimate occurrence in little-studied portions of their range Optimizing survey design for shasta salamanders (Hydromantes spp.) to estimate occurrence in little-studied portions of their range
Shasta salamanders (collectively, Hydromantes samweli, H. shastae, and H. wintu; hereafter, Shasta salamander) are endemic to northern California in the general vicinity of Shasta Lake reservoir. Although generally associated with limestone, they have repeatedly been found in association with other habitats, calling into question the distribution of the species complex. Further limiting...
Authors
Brian J. Halstead, Patrick M. Kleeman, Graziella Vittoria DiRenzo, Jonathan P. Rose
Diverse aging rates in ectothermic tetrapods provide insights for the evolution of aging and longevity Diverse aging rates in ectothermic tetrapods provide insights for the evolution of aging and longevity
Comparative studies of mortality in the wild are necessary to understand the evolution of aging; yet, ectothermic tetrapods are underrepresented in this comparative landscape, despite their suitability for testing evolutionary hypotheses. We present a study of aging rates and longevity across wild tetrapod ectotherms, using data from 107 populations (77 species) of nonavian reptiles and...
Authors
Beth A. Reinke, Hugo Cayuela, Fredric J. Janzen, Jean-François Lemaitre, Jean-Michel Gaillard, A. Michelle Lawing, John B. Iverson, Ditte G Christiansen, Iñigo Martínez-Solano, Gregorio Sánchez-Montes, Jorge S. Gutiérrez, Francis L Rose, Nicola J. Nelson, Susan Keall, Alain J Crivelli, Theodoros Nazirides, Annegret Grimm-Seyfarth, Klaus Henle, Emiliano Mori, Gaetan Guiller, Rebecca Homan, Anthony Olivier, Erin L. Muths, Blake R. Hossack, Xavier Bonnet, David S. Pilliod, Marieke Lettink, Tony Whitaker, Benedikt R. Schmidt, Michael G. Gardner, Marc Cheylan, Francoise Poitevin, Ana Golubovic, Ljiljana Tomovic, Dragan Arsovski, Richard A Griffiths, Jan W. Arntzen, Jean-Pierre Baron, Jean-Francois Le Galliard, Thomas Tully, Luca Luiselli, Massimo Capula, Lorenzo Rugiero, Rebecca McCaffery, Lisa A Eby, Briggs-Gonzalez; Venetia, Frank Mazzotti, David M. Pearson, Brad A. Lambert, David M. Green, Nathalie Jreidini, Claudio Angelini, Graham Pyke, Jean-Marc Thirion, Pierre Joly, Jean-Paul Lena, Tony Tucker, Limpus, Pauline Priol, Aurelien Besnard, Pauline Bernard, Kristin Stanford, Richard S. King, Justin M Garwood, Jaime Bosch, Franco Souza, Jaime Bertoluci, Shirley Famelli, Kurt Grossenbacher, Omar Lenzi, Kathleen Matthews, Sylvain Boitaud, Deanna H. Olson, Tim Jessop, Graeme Gillspie, Jean Clobert, Murielle Richard, Andrés Valenzuela-Sánchez, Gary M. Fellers, Patrick M. Kleeman, Brian J. Halstead, Evan H. Campbell Grant, Phillip G Byrne, Thierry Fretey, Gernard Le Garff, Pauline Levionnois, John C. Maerz, Julian Pichenot, Kurtulus Olgun, Nazan Uzum, Aziz Avci, Claude Miaud, Johan Elmberg, Gregory P Brown, Richard Shine, Nathan F Bendik, Lisa O’Donnell, Courtney L. Davis, Michael J Lannoo, Rochelle M Stiles, Robert M Cox, Aaron M Reedy, Daniel A. Warner, Eric Bonnaire, Kristine Grayson, Roberto Ramos-Targarona, Eyup Baskale, David J. Munoz, John Measey, F. Andre de Villiers, Will Selman, Victor Ronget, Anne M. Bronikowski, David A W Miller
Multi-scale patterns in occurrence of an ephemeral pool-breeding amphibian Multi-scale patterns in occurrence of an ephemeral pool-breeding amphibian
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species. Multi-scale processes can be particularly important for these species, where small-scale patterns in specific habitat components can affect the distribution of one life stage...
Authors
Brian J. Halstead, Jonathan P. Rose, Denise Clark, Patrick M. Kleeman, Robert N. Fisher
Conservation implications of spatiotemporal variation in the terrestrial ecology of Western spadefoots Conservation implications of spatiotemporal variation in the terrestrial ecology of Western spadefoots
Conservation of species reliant on ephemeral resources can be especially challenging in the face of a changing climate. Western spadefoots (Spea hammondii) are small burrowing anurans that breed in ephemeral pools, but adults spend the majority of their lives underground in adjacent terrestrial habitat. Western spadefoots are of conservation concern throughout their range because of...
Authors
Brian J. Halstead, Katherine L. Baumberger, Adam R. Backlin, Patrick M. Kleeman, Monique Nicole Wong, Elizabeth Gallegos, Jonathan P. Rose, Robert N. Fisher
Metal accumulation varies with life history, size, and development of larval amphibians Metal accumulation varies with life history, size, and development of larval amphibians
Amphibian larvae are commonly used as indicators of aquatic ecosystem health because they are susceptible to contaminants. However, there is limited information on how species characteristics and trophic position influence contaminant loads in larval amphibians. Importantly, there remains a need to understand whether grazers (frogs and toads [anurans]) and predators (salamanders) provide
Authors
Kelly L. Smalling, Emily Bea Oja, Danielle M. Cleveland, Jon D Davenport, Collin A. Eagles-Smith, Evan H. Campbell Grant, Patrick M. Kleeman, Brian J. Halstead, Kenzi M Stemp, Brian J. Tornabene, Zachary J Bunnell, Blake R. Hossack
Water temperature and availability shape the spatial ecology of a hot springs endemic toad Water temperature and availability shape the spatial ecology of a hot springs endemic toad
Desert amphibians are limited to exploiting ephemeral resources and aestivating or to inhabiting scarce refuges of permanent water, such as springs. Understanding how amphibians use these resources is essential for their conservation. Dixie Valley Toads (Anaxyrus williamsi) are precinctive to a small system of cold and hot springs in the Dixie Valley, Nevada, USA. The toads have been...
Authors
Brian J. Halstead, Patrick M. Kleeman, Jonathan P. Rose, Kristen J Fouts
Estimating the survival of unobservable life stages for a declining frog with a complex life-history Estimating the survival of unobservable life stages for a declining frog with a complex life-history
Demographic models enhance understanding of drivers of population growth and inform conservation efforts to prevent population declines and extinction. For species with complex life histories, however, parameterizing demographic models is challenging because some life stages can be difficult to study directly. Integrated population models (IPMs) empower researchers to estimate vital...
Authors
Jonathan P. Rose, Sarah Kupferberg, Clara A Wheeler, Patrick M. Kleeman, Brian J. Halstead
Occurrence of a suite of stream-obligate amphibians in timberlands of Mendocino County, California, examined using environmental DNA Occurrence of a suite of stream-obligate amphibians in timberlands of Mendocino County, California, examined using environmental DNA
Stream-obligate amphibians are important indicators of ecosystem health in the Pacific Northwest, but distributional information to improve forest management is lacking in many regions. We analyzed archived DNA extracted from water samples in 60 pools in streams on private timberlands in Mendocino County, California, for 3 California Species of Special Concern—Coastal Tailed Frogs...
Authors
Brian J. Halstead, Caren S. Goldberg, Robert B Douglas, Patrick M. Kleeman, David W Ulrich
Time-to-detection occupancy methods: Performance and utility for improving efficiency of surveys Time-to-detection occupancy methods: Performance and utility for improving efficiency of surveys
Occupancy methods propelled the quantitative study of species distributions forward by separating the observation process, or the imperfect detectability of species, from the ecological processes of interest governing species distributions. Occupancy studies come at a cost, however: the collection of additional data to account for nondetections at sites where the species is present. The...
Authors
Brian J. Halstead, Jonathan P. Rose, Patrick M. Kleeman
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet challenges that include low rates of...
Authors
J. Hardin Waddle, Daniel A. Grear, Brittany Mosher, Evan H. Campbell Grant, Michael J. Adams, Adam R. Backlin, William Barichivich, Adrianne B. Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara Chestnut, Jon M. Davenport, Andrew E. Dietrich, Robert N. Fisher, Brad Glorioso, Brian J. Halstead, Marc P Hayes, R. Ken Honeycutt, Blake R. Hossack, Patrick M. Kleeman, Julio A. Lemos-Espinal, Jeffrey M. Lorch, Robert W. Atkinson, Erin L. Muths, Christopher Pearl, Katherine Richgels, Charles W Robinson, Mark F. Roth, Jennifer Rowe, Walter Sadinski, Brent H. Sigafus, Iga Stasiak, Samuel Sweet, Susan C. Walls, Gregory J Watkins-Colwell, C. LeAnn White, Lori A Williams, Megan E. Winzeler
Science and Products
Filter Total Items: 30
USGS Occupancy Surveys for Dixie Valley Toads, Anaxyrus williamsi, in Churchill County, Nevada from April 2018 to May 2021 USGS Occupancy Surveys for Dixie Valley Toads, Anaxyrus williamsi, in Churchill County, Nevada from April 2018 to May 2021
Desert spring wetlands host many endemic species that require aquatic habitat and are isolated by the surrounding xeric terrestrial habitat. The Dixie Valley Toad (Anaxyrus williamsi) is a recently described anuran species endemic to desert spring wetlands in the Dixie Valley, Churchill County, Nevada, USA. Given this species was only recently recognized as distinct from Anaxyrus boreas...
Temperature and Relative Conductivity at Sampling Locations in the Dixie Valley, Churchill County, Nevada, 2019-2021 Temperature and Relative Conductivity at Sampling Locations in the Dixie Valley, Churchill County, Nevada, 2019-2021
These data provide temperatures and relative conductivity to determine the presence or absence of water at specific locations in Dixie Meadows, Dixie Valley, Churchill County, Nevada, 2019-2021.
Concentrations of pesticides in silicone bands as passive samplers and sediment in Pinnacles National Park and Bureau of Land Management lands in San Benito County, California, 2019-2021 Concentrations of pesticides in silicone bands as passive samplers and sediment in Pinnacles National Park and Bureau of Land Management lands in San Benito County, California, 2019-2021
To better understand the potential pesticide exposure, samples were collected from locations along two creeks in Pinnacles National Park and four creeks in nearby Bureau of Land Management (BLM) lands. Silicone bands were used as passive sampling devices (PSD) staked in the creek and above in the air (above the water line). Sampling was conducted in the summer from 2019 to 2021. PSDs...
Western Spadefoot Survey Data in Northern and Central California (2019) Western Spadefoot Survey Data in Northern and Central California (2019)
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species. Multi-scale processes can be particularly important for these species, where small-scale patterns in specific habitat components can affect the distribution of one life stage...
Amphibian chytrid swab data from Mendocino County, California (2016 - 2020) Amphibian chytrid swab data from Mendocino County, California (2016 - 2020)
This dataset includes results from external skin swabbing of Rana boylii and Dicamptodon tenebrosus to test for the fungus Batrachochytrium dendrobatidis from Fox Creek in Mendocino County, California, in 2016-2020. Morphological measurements of swabbed animals were recorded, and Rana boylii had a unique identifier (pit tag) inserted beneath their skin for identification in future...
Northwestern Pond Turtle Survey Data in Northern California Forest Streams (2021) Northwestern Pond Turtle Survey Data in Northern California Forest Streams (2021)
These data are from joint visual encounter and environmental DNA (eDNA) surveys conducted for northwestern pond turtles (Actinemys marmorata) in streams on privately-owned timberlands in northern California.
Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021) Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021)
This dataset includes results from external skin swabbing of Anaxyrus williamsi and Lithobates catesbeianus to test for the fungus Batrachochytrium dendrobatidis from the Dixie Valley in Churchill County, Nevada, in 2019-2021.
Western Spadefoot Habitat Selection Based on Radio Telemetry in Orange County, California 2019 Western Spadefoot Habitat Selection Based on Radio Telemetry in Orange County, California 2019
We conducted a radio telemetry study of adult western spadefoots (Spea hammondii) at 2 sites in southern California to characterize their survival, behavior, and movements from breeding through aestivation to inform conservation and management for the species. These data support the following publication: Halstead, B.J., Baumberger, K.L., Backlin, A.R., Kleeman, P.M., Wong, M.N...
Shasta Salamanders Surveys for the Shasta-Trinity National Forest (ver. 2.0, July 2020) Shasta Salamanders Surveys for the Shasta-Trinity National Forest (ver. 2.0, July 2020)
The Shasta salamander (Hydromantes shastae) has been petitioned for listing under the Endangered Species Act. The greatest threat to the species is likely habitat loss that will be caused by the increase in elevation of Shasta Lake that will occur with proposed increases in the height of Shasta Dam to increase water storage capacity and maintain cold water for Chinook salmon...
Characteristics of Sites Sampled for eDNA of Amphibians in Mendocino County, California, 2016 Characteristics of Sites Sampled for eDNA of Amphibians in Mendocino County, California, 2016
Stream-obligate amphibians are important indicators of ecosystem health in the Pacific Northwest, but distributional information to improve forest management is lacking in many regions. We analyzed archived DNA extracted from water samples in 60 pools within streams in private timberlands in Mendocino County, California, for 3 California Species of Special Concern - Coastal Tailed Frogs...
Site and Survey Data for Dixie Valley Toads in Churchill County, Nevada, 2019 Site and Survey Data for Dixie Valley Toads in Churchill County, Nevada, 2019
These data include site- and survey-specific information for occupancy surveys of Dixie Valley Toads (Anaxyrus williamsi) collected in the Dixie Valley, Churchill County, Nevada, in May 2019. The data include both multiple surveys of the same sites and time-to-detection information to quantify detection probabilities and account for imperfect detection in assessments of Dixie Valley Toad...
Site and Survey Data for Amphibian Surveys in Yosemite National Park, 2018 Site and Survey Data for Amphibian Surveys in Yosemite National Park, 2018
These data represent occupancy surveys conducted in long-term monitoring sites in Yosemite National Park in 2018 for three anurans, the Yosemite Toad (Anaxyrus canorus), the Sierran Treefrog (Pseudacris sierra), and the Sierra Nevada Yellow-legged Frog (Rana sierrae). The data include independent double-observer surveys and time-to-detection data to calculate detection probabilities and...
Filter Total Items: 47
Sierra Nevada amphibians demonstrate stable occupancy despite precipitation volatility in the early 21st Century Sierra Nevada amphibians demonstrate stable occupancy despite precipitation volatility in the early 21st Century
Climate can have a strong influence on species distributions, and amphibians with different life histories might be affected by annual variability in precipitation in different ways. The Sierra Nevada of California, United States, experienced some of the driest and wettest years on record in the early 21st Century, with variability in annual precipitation predicted to increase with...
Authors
Brian J. Halstead, Patrick M. Kleeman, Jonathan P. Rose, Gary M. Fellers
Hot, wet and rare: Modelling the occupancy dynamics of the narrowly distributed Dixie Valley toad Hot, wet and rare: Modelling the occupancy dynamics of the narrowly distributed Dixie Valley toad
Context: Small population sizes and no possibility of metapopulation rescue put narrowly distributed endemic species under elevated risk of extinction from anthropogenic change. Desert spring wetlands host many endemic species that require aquatic habitat and are isolated by the surrounding xeric terrestrial habitat. Aims: We sought to model the occupancy dynamics of the Dixie Valley...
Authors
Jonathan P. Rose, Patrick M. Kleeman, Brian J. Halstead
Optimizing survey design for shasta salamanders (Hydromantes spp.) to estimate occurrence in little-studied portions of their range Optimizing survey design for shasta salamanders (Hydromantes spp.) to estimate occurrence in little-studied portions of their range
Shasta salamanders (collectively, Hydromantes samweli, H. shastae, and H. wintu; hereafter, Shasta salamander) are endemic to northern California in the general vicinity of Shasta Lake reservoir. Although generally associated with limestone, they have repeatedly been found in association with other habitats, calling into question the distribution of the species complex. Further limiting...
Authors
Brian J. Halstead, Patrick M. Kleeman, Graziella Vittoria DiRenzo, Jonathan P. Rose
Diverse aging rates in ectothermic tetrapods provide insights for the evolution of aging and longevity Diverse aging rates in ectothermic tetrapods provide insights for the evolution of aging and longevity
Comparative studies of mortality in the wild are necessary to understand the evolution of aging; yet, ectothermic tetrapods are underrepresented in this comparative landscape, despite their suitability for testing evolutionary hypotheses. We present a study of aging rates and longevity across wild tetrapod ectotherms, using data from 107 populations (77 species) of nonavian reptiles and...
Authors
Beth A. Reinke, Hugo Cayuela, Fredric J. Janzen, Jean-François Lemaitre, Jean-Michel Gaillard, A. Michelle Lawing, John B. Iverson, Ditte G Christiansen, Iñigo Martínez-Solano, Gregorio Sánchez-Montes, Jorge S. Gutiérrez, Francis L Rose, Nicola J. Nelson, Susan Keall, Alain J Crivelli, Theodoros Nazirides, Annegret Grimm-Seyfarth, Klaus Henle, Emiliano Mori, Gaetan Guiller, Rebecca Homan, Anthony Olivier, Erin L. Muths, Blake R. Hossack, Xavier Bonnet, David S. Pilliod, Marieke Lettink, Tony Whitaker, Benedikt R. Schmidt, Michael G. Gardner, Marc Cheylan, Francoise Poitevin, Ana Golubovic, Ljiljana Tomovic, Dragan Arsovski, Richard A Griffiths, Jan W. Arntzen, Jean-Pierre Baron, Jean-Francois Le Galliard, Thomas Tully, Luca Luiselli, Massimo Capula, Lorenzo Rugiero, Rebecca McCaffery, Lisa A Eby, Briggs-Gonzalez; Venetia, Frank Mazzotti, David M. Pearson, Brad A. Lambert, David M. Green, Nathalie Jreidini, Claudio Angelini, Graham Pyke, Jean-Marc Thirion, Pierre Joly, Jean-Paul Lena, Tony Tucker, Limpus, Pauline Priol, Aurelien Besnard, Pauline Bernard, Kristin Stanford, Richard S. King, Justin M Garwood, Jaime Bosch, Franco Souza, Jaime Bertoluci, Shirley Famelli, Kurt Grossenbacher, Omar Lenzi, Kathleen Matthews, Sylvain Boitaud, Deanna H. Olson, Tim Jessop, Graeme Gillspie, Jean Clobert, Murielle Richard, Andrés Valenzuela-Sánchez, Gary M. Fellers, Patrick M. Kleeman, Brian J. Halstead, Evan H. Campbell Grant, Phillip G Byrne, Thierry Fretey, Gernard Le Garff, Pauline Levionnois, John C. Maerz, Julian Pichenot, Kurtulus Olgun, Nazan Uzum, Aziz Avci, Claude Miaud, Johan Elmberg, Gregory P Brown, Richard Shine, Nathan F Bendik, Lisa O’Donnell, Courtney L. Davis, Michael J Lannoo, Rochelle M Stiles, Robert M Cox, Aaron M Reedy, Daniel A. Warner, Eric Bonnaire, Kristine Grayson, Roberto Ramos-Targarona, Eyup Baskale, David J. Munoz, John Measey, F. Andre de Villiers, Will Selman, Victor Ronget, Anne M. Bronikowski, David A W Miller
Multi-scale patterns in occurrence of an ephemeral pool-breeding amphibian Multi-scale patterns in occurrence of an ephemeral pool-breeding amphibian
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species. Multi-scale processes can be particularly important for these species, where small-scale patterns in specific habitat components can affect the distribution of one life stage...
Authors
Brian J. Halstead, Jonathan P. Rose, Denise Clark, Patrick M. Kleeman, Robert N. Fisher
Conservation implications of spatiotemporal variation in the terrestrial ecology of Western spadefoots Conservation implications of spatiotemporal variation in the terrestrial ecology of Western spadefoots
Conservation of species reliant on ephemeral resources can be especially challenging in the face of a changing climate. Western spadefoots (Spea hammondii) are small burrowing anurans that breed in ephemeral pools, but adults spend the majority of their lives underground in adjacent terrestrial habitat. Western spadefoots are of conservation concern throughout their range because of...
Authors
Brian J. Halstead, Katherine L. Baumberger, Adam R. Backlin, Patrick M. Kleeman, Monique Nicole Wong, Elizabeth Gallegos, Jonathan P. Rose, Robert N. Fisher
Metal accumulation varies with life history, size, and development of larval amphibians Metal accumulation varies with life history, size, and development of larval amphibians
Amphibian larvae are commonly used as indicators of aquatic ecosystem health because they are susceptible to contaminants. However, there is limited information on how species characteristics and trophic position influence contaminant loads in larval amphibians. Importantly, there remains a need to understand whether grazers (frogs and toads [anurans]) and predators (salamanders) provide
Authors
Kelly L. Smalling, Emily Bea Oja, Danielle M. Cleveland, Jon D Davenport, Collin A. Eagles-Smith, Evan H. Campbell Grant, Patrick M. Kleeman, Brian J. Halstead, Kenzi M Stemp, Brian J. Tornabene, Zachary J Bunnell, Blake R. Hossack
Water temperature and availability shape the spatial ecology of a hot springs endemic toad Water temperature and availability shape the spatial ecology of a hot springs endemic toad
Desert amphibians are limited to exploiting ephemeral resources and aestivating or to inhabiting scarce refuges of permanent water, such as springs. Understanding how amphibians use these resources is essential for their conservation. Dixie Valley Toads (Anaxyrus williamsi) are precinctive to a small system of cold and hot springs in the Dixie Valley, Nevada, USA. The toads have been...
Authors
Brian J. Halstead, Patrick M. Kleeman, Jonathan P. Rose, Kristen J Fouts
Estimating the survival of unobservable life stages for a declining frog with a complex life-history Estimating the survival of unobservable life stages for a declining frog with a complex life-history
Demographic models enhance understanding of drivers of population growth and inform conservation efforts to prevent population declines and extinction. For species with complex life histories, however, parameterizing demographic models is challenging because some life stages can be difficult to study directly. Integrated population models (IPMs) empower researchers to estimate vital...
Authors
Jonathan P. Rose, Sarah Kupferberg, Clara A Wheeler, Patrick M. Kleeman, Brian J. Halstead
Occurrence of a suite of stream-obligate amphibians in timberlands of Mendocino County, California, examined using environmental DNA Occurrence of a suite of stream-obligate amphibians in timberlands of Mendocino County, California, examined using environmental DNA
Stream-obligate amphibians are important indicators of ecosystem health in the Pacific Northwest, but distributional information to improve forest management is lacking in many regions. We analyzed archived DNA extracted from water samples in 60 pools in streams on private timberlands in Mendocino County, California, for 3 California Species of Special Concern—Coastal Tailed Frogs...
Authors
Brian J. Halstead, Caren S. Goldberg, Robert B Douglas, Patrick M. Kleeman, David W Ulrich
Time-to-detection occupancy methods: Performance and utility for improving efficiency of surveys Time-to-detection occupancy methods: Performance and utility for improving efficiency of surveys
Occupancy methods propelled the quantitative study of species distributions forward by separating the observation process, or the imperfect detectability of species, from the ecological processes of interest governing species distributions. Occupancy studies come at a cost, however: the collection of additional data to account for nondetections at sites where the species is present. The...
Authors
Brian J. Halstead, Jonathan P. Rose, Patrick M. Kleeman
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet challenges that include low rates of...
Authors
J. Hardin Waddle, Daniel A. Grear, Brittany Mosher, Evan H. Campbell Grant, Michael J. Adams, Adam R. Backlin, William Barichivich, Adrianne B. Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara Chestnut, Jon M. Davenport, Andrew E. Dietrich, Robert N. Fisher, Brad Glorioso, Brian J. Halstead, Marc P Hayes, R. Ken Honeycutt, Blake R. Hossack, Patrick M. Kleeman, Julio A. Lemos-Espinal, Jeffrey M. Lorch, Robert W. Atkinson, Erin L. Muths, Christopher Pearl, Katherine Richgels, Charles W Robinson, Mark F. Roth, Jennifer Rowe, Walter Sadinski, Brent H. Sigafus, Iga Stasiak, Samuel Sweet, Susan C. Walls, Gregory J Watkins-Colwell, C. LeAnn White, Lori A Williams, Megan E. Winzeler