I am a quantitative ecologist conducting scholarly research at the intersection of animal ecology, spatial analyses, and statistics.
My interests are in population ecology for animals declining in abundance, asking new questions of multiple, combined data sets to gain novel insight into the dynamics of animal populations, and translating science into guidance for practical management decisions.
Science and Products
Filter Total Items: 20
Wetland Loss: Modeling Consequences for Waterfowl Production, Recreation Use, and Economic Opportunities
Amendments to the Clean Water Act in 1972 established federal jurisdiction over “navigable waters,” defined in the Act as the “waters of the United States.” A revised definition of the Waters of the U.S. rule took effect on 20 March 2023. However, various legal challenges precluded implementation of the new definition. On 25 May 2023, the U.S. Supreme Court, in the case of Sackett et ux. v...
Status of butterflies in the United States
The pervasive nature of insect species’ declines has led to the specter of an “Insect Armageddon” in the popular press. Insect-derived ecosystem services are valued at > $57 billion in the U.S. and thus the loss of insects has the potential to fundamentally disrupt natural and economic systems.The causes of insect declines have been linked to changes in climate, land use and pesticide use, but the...
TrendPowerTool: A web lookup tool for estimating the statistical power of a monitoring program to detect population trends
A simulation-based power analysis can be used to estimate the sample sizes needed for a successful monitoring program, but requires technical expertise and sometimes extensive computing resources. We developed a web-based lookup app, called TrendPowerTool, to provide guidance for ecological monitoring programs when resources are not available for a simulation-based power analysis (Fig. 1)...
Decision-support tool for managing endangered species in the face of uncertainty
Along the Santa Clara River in California, populations of the federally and state-listed Least Bell's Vireo (Vireo bellii pusillus) are recovering from near extirpation. Habitat protection and restoration, as well as reducing brood parasitism by Brown-headed Cowbirds (Molothrus ater), are thought to be the primary drivers of this recovery. The challenge going forward is to find the right balance...
Monarch Conservation Planning Tools
Monarch Conservation Planning Tools
Bat Research
White-nose syndrome (WNS) caused by the fungal pathogen Pseudogymnoascus destructans (Pd) has decimated hibernating bat populations across North America since it emerged 10 years ago in New York. As Pd has spread across North America, infection dynamics and mortality from WNS have varied among species and across sites. The mechanisms behind vulnerability of species across the current and expanding...
Integrating colony counts with NABat acoustic data to reveal the true impacts of White-Nose Syndrome on northern long-eared bats
Bat Research Research collaboration: Brian Reichert (FORT), Wayne Thogmartin (UMESC), Winifred Frick (Bat Conservation International), Tina Cheng (Bat Conservation International) The northern long-eared bat (Myotis septentrionalis) was listed as Threatened on the Endangered Species Act in 2014 due to rapid declines in numbers of observed hibernating bats at winter roosting sites after the arrival...
A continental-scale study of acoustic phenology to improve population monitoring and inform management of hibernating bats
Bat Research Research collaboration: Winifred Frick (Bat Conservation International), Theodore Weller (U.S. Forest Service), Wayne Thogmartin (UMESC), Craig Willis (University of Winnipeg), and Brian Reichert (FORT) White-nose Syndrome (WNS) has caused severe declines in bat populations over the past 10 years and colony sizes at winter hibernacula have decreased on average by >90% for three...
Modeling the response of cave hibernating Myotis species to white-nose syndrome mitigation tactics
Bat Research Research collaboration: Robin Russell (NWHC), Tonie Rocke (NWHC), Wayne Thogmartin (UMESC), Evan Grant (PWRC) White-nose syndrome is a fungal disease devastating cave-hibernating bat species (Myotis spp.) in the eastern United States. Several mitigation tactics have been proposed to alleviate the effects of white-nose syndrome on bats including probiotics and vaccination. Questions...
Developing online integrated data visualization tools for WNS and NABat
Bat Research Research collaboration: Brian Reichert (FORT), Anne Ballmann (NWHC), Jeremy Coleman (USFWS), Paul Cryan (FORT), Wayne Thogmartin (UMESC), and Katherine Irvine (NOROCK) White-nose syndrome is caused by the fungal pathogen Pseudogymnoascus destructans (Pd), which has decimated hibernating bat populations across North America since it emerged 10 years ago in New York. While diagnostic...
Quantifying vulnerability of bat species to White-nose Syndrome across North America
Bat Research Research collaboration: Winifred Frick (Bat Conservation International), Brian Reichert (FORT), Theodore Weller (US Forest Service), Wayne Thogmartin (UMESC) and the North American Bat Colony Count Consortium We quantify vulnerability of bat species in North America to target and prioritize management actions toward species and habitats that are most at risk from impacts from White...
Evaluating the Role of Climate on Midwestern Butterfly Trajectories, Monarch Declines, and the Broader “Insect Apocalypse”
Global concern of an “insect apocalypse” is fueling demand for large-scale, long-term studies of insect population dynamics. Butterflies associated with open habitat, like prairies and grasslands, have long been identified as species of concern in the Midwest. The iconic monarch butterfly, which serves as a flagship for both migration and insect conservation, is one such species of conservation co...
Science and Products
- Science
Filter Total Items: 20
Wetland Loss: Modeling Consequences for Waterfowl Production, Recreation Use, and Economic Opportunities
Amendments to the Clean Water Act in 1972 established federal jurisdiction over “navigable waters,” defined in the Act as the “waters of the United States.” A revised definition of the Waters of the U.S. rule took effect on 20 March 2023. However, various legal challenges precluded implementation of the new definition. On 25 May 2023, the U.S. Supreme Court, in the case of Sackett et ux. v...Status of butterflies in the United States
The pervasive nature of insect species’ declines has led to the specter of an “Insect Armageddon” in the popular press. Insect-derived ecosystem services are valued at > $57 billion in the U.S. and thus the loss of insects has the potential to fundamentally disrupt natural and economic systems.The causes of insect declines have been linked to changes in climate, land use and pesticide use, but the...TrendPowerTool: A web lookup tool for estimating the statistical power of a monitoring program to detect population trends
A simulation-based power analysis can be used to estimate the sample sizes needed for a successful monitoring program, but requires technical expertise and sometimes extensive computing resources. We developed a web-based lookup app, called TrendPowerTool, to provide guidance for ecological monitoring programs when resources are not available for a simulation-based power analysis (Fig. 1)...Decision-support tool for managing endangered species in the face of uncertainty
Along the Santa Clara River in California, populations of the federally and state-listed Least Bell's Vireo (Vireo bellii pusillus) are recovering from near extirpation. Habitat protection and restoration, as well as reducing brood parasitism by Brown-headed Cowbirds (Molothrus ater), are thought to be the primary drivers of this recovery. The challenge going forward is to find the right balance...Monarch Conservation Planning Tools
Monarch Conservation Planning ToolsBat Research
White-nose syndrome (WNS) caused by the fungal pathogen Pseudogymnoascus destructans (Pd) has decimated hibernating bat populations across North America since it emerged 10 years ago in New York. As Pd has spread across North America, infection dynamics and mortality from WNS have varied among species and across sites. The mechanisms behind vulnerability of species across the current and expanding...Integrating colony counts with NABat acoustic data to reveal the true impacts of White-Nose Syndrome on northern long-eared bats
Bat Research Research collaboration: Brian Reichert (FORT), Wayne Thogmartin (UMESC), Winifred Frick (Bat Conservation International), Tina Cheng (Bat Conservation International) The northern long-eared bat (Myotis septentrionalis) was listed as Threatened on the Endangered Species Act in 2014 due to rapid declines in numbers of observed hibernating bats at winter roosting sites after the arrival...A continental-scale study of acoustic phenology to improve population monitoring and inform management of hibernating bats
Bat Research Research collaboration: Winifred Frick (Bat Conservation International), Theodore Weller (U.S. Forest Service), Wayne Thogmartin (UMESC), Craig Willis (University of Winnipeg), and Brian Reichert (FORT) White-nose Syndrome (WNS) has caused severe declines in bat populations over the past 10 years and colony sizes at winter hibernacula have decreased on average by >90% for three...Modeling the response of cave hibernating Myotis species to white-nose syndrome mitigation tactics
Bat Research Research collaboration: Robin Russell (NWHC), Tonie Rocke (NWHC), Wayne Thogmartin (UMESC), Evan Grant (PWRC) White-nose syndrome is a fungal disease devastating cave-hibernating bat species (Myotis spp.) in the eastern United States. Several mitigation tactics have been proposed to alleviate the effects of white-nose syndrome on bats including probiotics and vaccination. Questions...Developing online integrated data visualization tools for WNS and NABat
Bat Research Research collaboration: Brian Reichert (FORT), Anne Ballmann (NWHC), Jeremy Coleman (USFWS), Paul Cryan (FORT), Wayne Thogmartin (UMESC), and Katherine Irvine (NOROCK) White-nose syndrome is caused by the fungal pathogen Pseudogymnoascus destructans (Pd), which has decimated hibernating bat populations across North America since it emerged 10 years ago in New York. While diagnostic...Quantifying vulnerability of bat species to White-nose Syndrome across North America
Bat Research Research collaboration: Winifred Frick (Bat Conservation International), Brian Reichert (FORT), Theodore Weller (US Forest Service), Wayne Thogmartin (UMESC) and the North American Bat Colony Count Consortium We quantify vulnerability of bat species in North America to target and prioritize management actions toward species and habitats that are most at risk from impacts from White...Evaluating the Role of Climate on Midwestern Butterfly Trajectories, Monarch Declines, and the Broader “Insect Apocalypse”
Global concern of an “insect apocalypse” is fueling demand for large-scale, long-term studies of insect population dynamics. Butterflies associated with open habitat, like prairies and grasslands, have long been identified as species of concern in the Midwest. The iconic monarch butterfly, which serves as a flagship for both migration and insect conservation, is one such species of conservation co... - Data
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