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All Articles in Population Biology

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What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth A. Reinke, David A. W. Miller, Fredric J. Janzen 2019 Pennsylvania State University

What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth A. Reinke, David A. W. Miller, Fredric J. Janzen

Ecology, Evolution and Organismal Biology Publications

Long-term studies have been crucial to the advancement of population biology, especially our understanding of population dynamics. We argue that this progress arises from three key characteristics of long-term research. First, long-term data are necessary to observe the heterogeneity that drives most population processes. Second, long-term studies often inherently lead to novel insights. Finally, long-term field studies can serve as model systems for population biology, allowing for theory and methods to be tested under well-characterized conditions. We illustrate these ideas in three long-term field systems that have made outsized contributions to our understanding of population ecology, evolution, and conservation biology ...


Parameter Estimation Within An Sir Model Of Chestnut Blight In North America, Anita Davelos Baines, Hope B. Anderson, John S. McAlister, Robert F. Allen 2019 University of Wisconsin-La Crosse

Parameter Estimation Within An Sir Model Of Chestnut Blight In North America, Anita Davelos Baines, Hope B. Anderson, John S. Mcalister, Robert F. Allen

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Engaging Undergraduates In Research In Mathematical Biology With Limited Resources, Timothy Comar 2019 Benedictine University

Engaging Undergraduates In Research In Mathematical Biology With Limited Resources, Timothy Comar

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Period Drift In A Neutrally Stable Stochastic Oscillator, Kevin Sanft 2019 Illinois State University

Period Drift In A Neutrally Stable Stochastic Oscillator, Kevin Sanft

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Analysis Of An Agent-Based Model For Integrated Pest Management With Periodic Control Strategies, Timothy Comar 2019 Benedictine University

Analysis Of An Agent-Based Model For Integrated Pest Management With Periodic Control Strategies, Timothy Comar

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Modeling Control Methods To Manage The Sylvatic Plague In Black-Tailed Prairie Dog Towns, David C. Elzinga, Shelby R. Stowe, Leland Russell 2019 University of Tennessee, Knoxville

Modeling Control Methods To Manage The Sylvatic Plague In Black-Tailed Prairie Dog Towns, David C. Elzinga, Shelby R. Stowe, Leland Russell

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Improving Parasite Transmission Parameters For A Mathematical Model Of Swimmer's Itch Through Both Empirical And Analytical Techniques, Josey Sorenson 2019 University of Wisconsin, La Crosse

Improving Parasite Transmission Parameters For A Mathematical Model Of Swimmer's Itch Through Both Empirical And Analytical Techniques, Josey Sorenson

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington 2019 U.S. Department of Agriculture

Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington

Thomas W. Sappington

Patterns of mating for the European corn borer (Ostrinia nubilalis) moth depend in part on variation in sex‐pheromone blend. The ratio of (E)‐11‐ and (Z)‐11‐tetradecenyl acetate (E11‐ and Z11‐14:OAc) in the pheromone blend that females produce and males respond to differs between strains of O. nubilalis. Populations also vary in female oviposition preference for and larval performance on maize (C4) and non‐maize (C3) host plants. The relative contributions of sexual and ecological trait variation to the genetic structure of O. nubilalis remains unknown. Host‐plant use (13C/14C ratios) and genetic differentiation were ...


Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller 2019 Pennsylvania State University

Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller

Fredric Janzen

Understanding age‐dependent patterns of survival is fundamental to predicting population dynamics, understanding selective pressures, and estimating rates of senescence. However, quantifying age‐specific survival in wild populations poses significant logistical and statistical challenges. Recent work has helped to alleviate these constraints by demonstrating that age‐specific survival can be estimated using mark‐recapture data even when age is unknown for all or some individuals. However, previous approaches do not incorporate auxiliary information that can improve age estimates of individuals. We introduce a survival estimator that combines a von Bertalanffy growth model, age‐specific hazard functions, and a Cormack‐Jolly ...


Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller 2019 Pennsylvania State University

Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller

Anne Bronikowski

Understanding age‐dependent patterns of survival is fundamental to predicting population dynamics, understanding selective pressures, and estimating rates of senescence. However, quantifying age‐specific survival in wild populations poses significant logistical and statistical challenges. Recent work has helped to alleviate these constraints by demonstrating that age‐specific survival can be estimated using mark‐recapture data even when age is unknown for all or some individuals. However, previous approaches do not incorporate auxiliary information that can improve age estimates of individuals. We introduce a survival estimator that combines a von Bertalanffy growth model, age‐specific hazard functions, and a Cormack‐Jolly ...


Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington 2019 U.S. Department of Agriculture

Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington

Entomology Publications

Patterns of mating for the European corn borer (Ostrinia nubilalis) moth depend in part on variation in sex‐pheromone blend. The ratio of (E)‐11‐ and (Z)‐11‐tetradecenyl acetate (E11‐ and Z11‐14:OAc) in the pheromone blend that females produce and males respond to differs between strains of O. nubilalis. Populations also vary in female oviposition preference for and larval performance on maize (C4) and non‐maize (C3) host plants. The relative contributions of sexual and ecological trait variation to the genetic structure of O. nubilalis remains unknown. Host‐plant use (13C/14C ratios) and genetic differentiation were ...


Outdoor Cats: An Animal Welfare And Protection Perspective, John Hadidian, Inga Gibson, Susan Hagood, Nancy Peterson, Bernard Unti, Betsy McFarland, Katie Lisnik, Heather Bialy, Inga Fricke, Kathleen Schatzmann, Jennifer Fearing, Pam Runquist, Andrew N. Rowan (ed.) 2019 The Humane Society of the United States

Outdoor Cats: An Animal Welfare And Protection Perspective, John Hadidian, Inga Gibson, Susan Hagood, Nancy Peterson, Bernard Unti, Betsy Mcfarland, Katie Lisnik, Heather Bialy, Inga Fricke, Kathleen Schatzmann, Jennifer Fearing, Pam Runquist, Andrew N. Rowan (Ed.)

Andrew N. Rowan, DPhil

First raised as a serious conservation issue more than 100 years ago, the impact of free-roaming cats on wildlife has been a subject of debate, controversy, and conflict since then. Cats have been tied directly to the extinction of sensitive species in island environments and implicated as major threats to certain wildlife populations elsewhere. Yet the study of free-roaming cats and the problems attributed to them lags behind the standards of research typical with more traditional vertebrate “pest” species. Alternative management approaches, ranging from traditional practices such as removal and depopulation to emerging concepts such as Trap- Neuter-Return (TNR), have ...


Outdoor Cats: An Animal Welfare And Protection Perspective, John Hadidian, Inga Gibson, Susan Hagood, Nancy Peterson, Bernard Unti, Betsy McFarland, Katie Lisnik, Heather Bialy, Inga Fricke, Kathleen Schatzmann, Jennifer Fearing, Pam Runquist, Andrew N. Rowan (ed.) 2019 The Humane Society of the United States

Outdoor Cats: An Animal Welfare And Protection Perspective, John Hadidian, Inga Gibson, Susan Hagood, Nancy Peterson, Bernard Unti, Betsy Mcfarland, Katie Lisnik, Heather Bialy, Inga Fricke, Kathleen Schatzmann, Jennifer Fearing, Pam Runquist, Andrew N. Rowan (Ed.)

Bernard Unti, PhD

First raised as a serious conservation issue more than 100 years ago, the impact of free-roaming cats on wildlife has been a subject of debate, controversy, and conflict since then. Cats have been tied directly to the extinction of sensitive species in island environments and implicated as major threats to certain wildlife populations elsewhere. Yet the study of free-roaming cats and the problems attributed to them lags behind the standards of research typical with more traditional vertebrate “pest” species. Alternative management approaches, ranging from traditional practices such as removal and depopulation to emerging concepts such as Trap- Neuter-Return (TNR), have ...


Dc Birdscape: A Program For Monitoring Neotropical Migratory Birds In Washington, Dc, John Sauer, John Hadidian, Sam Droege, Paul Handly, Carolyn Williams, Christopher Swarth, George Didden, Jane Huff 2019 USGS Patuxent Wildlife Research Center

Dc Birdscape: A Program For Monitoring Neotropical Migratory Birds In Washington, Dc, John Sauer, John Hadidian, Sam Droege, Paul Handly, Carolyn Williams, Christopher Swarth, George Didden, Jane Huff

John Hadidian, PhD

Urban and suburban habitats often contain a variety of Neotropical migratory birds, but are poorly sampled by programs such as the North American Breeding Bird Survey. DC Birdscape was developed to inventory and monitor birds in Washington, DC. Birds were surveyed using a systematic sample of point counts during 1993-1995. Results indicate that species richness of Neotropical migratory birds varied among land-use categories, and that maximum species richness occurred in parkland habitats. Although DC Birdscape has provided relevant information on bird distribution and species richness, it is unclear whether the information is of sufficient management interest to support its continuation ...


What Is A Humane Wildlife Control Service?, John Griffin, Lori Thiele, Pamela Lough, Janet Snyder, Maggie Brasted, John Hadidian 2019 The Humane Society of the United States

What Is A Humane Wildlife Control Service?, John Griffin, Lori Thiele, Pamela Lough, Janet Snyder, Maggie Brasted, John Hadidian

John Hadidian, PhD

In May 2007, The Humane Society of the United States launched a for-fee business called Humane Wildlife Servicessm to engage in wildlife control jobs in the Washington, D.C. metro area. We had several purposes in launching this service. First, we felt it necessary to offer a service to customers in our home base area that allowed them to choose a wildlife removal company that did not trap and relocate, or trap and kill, animals. Second, we wished to directly experience and test the operational and conceptual challenges associated with this sort of service. Third, we wished to develop a ...


“Nuisance” Wildlife Control Trapping: Another Perspective, Brad Gates, John Hadidian, Laura Simon 2019 AAA Wildlife Control

“Nuisance” Wildlife Control Trapping: Another Perspective, Brad Gates, John Hadidian, Laura Simon

John Hadidian, PhD

Urban wildlife control is a rapidly growing profession in which many practitioners apparently still come from a recreational or commercial trapping background. Perhaps for that reason, much of the “control” in resolving human-wildlife conflicts in cities and suburbs seems to revolve around the use of lethal traps to eliminate “problem” animals. Although some states allow relocation and most apparently allow for nuisance animals to be released on site, the extent to which these practices occur is little known. Further, the biological impacts of continual trapping cycles on urban wildlife populations remain little known as well. An alternative approach to trapping ...


The “Nuisance” Wildlife Control Industry: Animal Welfare Concerns, John Hadidian, Laura J. Simon, Michele R. Childs 2019 The Humane Society of the United States

The “Nuisance” Wildlife Control Industry: Animal Welfare Concerns, John Hadidian, Laura J. Simon, Michele R. Childs

John Hadidian, PhD

The recent and rapid growth of the private “nuisance” wildlife control industry follows the unparalleled current period of urban and suburban expansion. Nuisance wildlife control businesses range from simple home-based services to sophisticated franchised businesses. The nuisance wildlife control operator may hold an advanced degree in the wildlife sciences, or simply be an entrepreneur without formal education or even background experience in wildlife. State and federal agencies may participate directly or indirectly in nuisance wildlife control, in activities ranging from dissemination of advice or information to actual participation in programs that may lead to removal of animals. Naturally, all of ...


Geographic Population Structure And Taxonomic Identity Of Rhinichthys Osculus, The Santa Ana Speckled Dace, As Elucidated By Nuclear Dna Intron Sequencing, Liane Raynette Greaver 2019 California State University - San Bernardino

Geographic Population Structure And Taxonomic Identity Of Rhinichthys Osculus, The Santa Ana Speckled Dace, As Elucidated By Nuclear Dna Intron Sequencing, Liane Raynette Greaver

Electronic Theses, Projects, and Dissertations

Rhinichthys osculus (Cyprinidae), the speckled dace, is the most widely distributed freshwater fish in the western United States. The southern California populations of R. osculus are identified as the Santa Ana speckled dace (SASD), though the SASD has not yet been formally recognized as a distinct taxon. Current mtDNA analysis performed in the Metcalf Lab has shown a reciprocally monophyletic relationship among three California regions; southern, central coast, and Owens Valley. Similarly, microsatellite genotyping has shown significant levels of geographic population structure. The purpose of this study was to provide nuclear DNA sequence data to determine the taxonomic status of ...


Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller 2019 Pennsylvania State University

Joint Estimation Of Growth And Survival From Mark‐Recapture Data To Improve Estimates Of Senescence In Wild Populations, Beth A. Reinke, Luke Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David Miller

Ecology, Evolution and Organismal Biology Publications

Understanding age‐dependent patterns of survival is fundamental to predicting population dynamics, understanding selective pressures, and estimating rates of senescence. However, quantifying age‐specific survival in wild populations poses significant logistical and statistical challenges. Recent work has helped to alleviate these constraints by demonstrating that age‐specific survival can be estimated using mark‐recapture data even when age is unknown for all or some individuals. However, previous approaches do not incorporate auxiliary information that can improve age estimates of individuals. We introduce a survival estimator that combines a von Bertalanffy growth model, age‐specific hazard functions, and a Cormack‐Jolly ...


Protecting Biodiversity In British Columbia: Recommendations For Developing Species At Risk Legislation, Alana R. Westwood, Sarah P. Otto, Arne Mooers, Chris Darimont, Karen E. Hodges, Chris Johnson, Brian M. Starzomski, Cole Burton, Kai M. A. Chan, Marco Festa-Bianchet, Shaun Fluker, Sumeet Gulati, Aerin L. Jacob, Dan Kraus, Tara G. Martin, Wendy J. Palen, John D. Reynolds, Jeannette Whitton 2019 Yellowstone to Yukon Conservation Initiative

Protecting Biodiversity In British Columbia: Recommendations For Developing Species At Risk Legislation, Alana R. Westwood, Sarah P. Otto, Arne Mooers, Chris Darimont, Karen E. Hodges, Chris Johnson, Brian M. Starzomski, Cole Burton, Kai M. A. Chan, Marco Festa-Bianchet, Shaun Fluker, Sumeet Gulati, Aerin L. Jacob, Dan Kraus, Tara G. Martin, Wendy J. Palen, John D. Reynolds, Jeannette Whitton

Chris Darimont, PhD

British Columbia has the greatest biological diversity of any province or territory in Canada. Yet increasing numbers of species in British Columbia are threatened with extinction. The current patchwork of provincial laws and regulations has not effectively prevented species declines. Recently, the Provincial Government has committed to enacting an endangered species law. Drawing upon our scientific and legal expertise, we offer recommendations for key features of endangered species legislation that build upon strengths and avoid weaknesses observed elsewhere. We recommend striking an independent Oversight Committee to provide recommendations about listing species, organize Recovery Teams, and monitor the efficacy of actions ...


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