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Articles 2131 - 2160 of 19673
Full-Text Articles in Entire DC Network
Investigating The Relationships Between Biotic And Abiotic Factors Affecting Migratory Behavior In Westslope Cutthroat Trout Within The Priest River System, Kyle M. Keenan
EWU Masters Thesis Collection
Numerous salmonid species demonstrate diverse life histories, encompassing both resident and migratory behaviors. Migratory life histories play a pivotal role in maintaining metapopulations for various reasons, facilitating genetic exchange between populations and yielding larger-sized females with increased fecundity relative to residents. This study took place in northern Idaho, within the lower Priest River system, which is highly susceptible to degrading habitat. Previous research has discovered this system as a significant contributor to migratory Westslope Cutthroat Trout (Oncorhynchus lewisi, WCT) in the Lake Pend Oreille and Priest River systems. Expanding on these results, we compared four Priest River tributaries that produced …
Moose Abundance And Calf:Cow Ratios On The Blackfeet Indian Reservation And Glacier National Park, Landon Joel Magee
Moose Abundance And Calf:Cow Ratios On The Blackfeet Indian Reservation And Glacier National Park, Landon Joel Magee
Graduate Student Theses, Dissertations, & Professional Papers
Many moose (Alces alces; Sikihtsisoo) populations across North America, especially along their southern range, are declining due to factors such as climate change, parasites and disease, predation, habitat loss and degradation, and overharvest. These declines highlight broader ecological concerns, as moose play a critical role as prey within their ecosystems. Despite their importance, data on crucial demographic parameters like abundance and age ratios are sparse for moose, complicating management efforts. Conventional monitoring methods, including radio-collaring, harvest data, public surveys, and aerial surveys, face significant logistical and financial challenges, and often fail to provide a comprehensive understanding of …
The Spatial Ecology Of Plains Spotted Skunks In South Dakota: Insights From Species Distribution, Resource Selection, And Co-Occurrence Models, Kara M. White
Electronic Theses and Dissertations
The plains spotted skunk (Spilogale interrupta) is a data-deficient small carnivore native to the central plains of North America that has experienced significant population declines. My dissertation investigates the species’ distribution, habitat associations, and interspecific interactions in South Dakota, providing crucial information for conservation actions. In Chapter 1, I developed ensemble distribution models on a broad scale, incorporating species location data from 1985–2020, environmental factors, and six predictive modeling algorithms. I identified key predictors including mean temperature diurnal range and proportion of area as pasture, and estimated ~31,300 km2 of potential habitat, predominately in eastern South Dakota. In Chapter 2, …
Methods For Optimizing Detection And Evaluating Habitat Use Of North American River Otters In South Dakota, Jessica Speiser
Methods For Optimizing Detection And Evaluating Habitat Use Of North American River Otters In South Dakota, Jessica Speiser
Electronic Theses and Dissertations
North American river otters (Lontra canadensis) play a critical role as an apex predator in riverine ecosystems. A challenging species to survey using traditional methods, they remain understudied in non-forested regions, such as the Northern Great Plains, where habitat degradation and landscape fragmentation may reduce habitat quality and availability and disrupt landscape connectivity. This thesis aims to improve detectability and investigates the habitat use of river otters in South Dakota to better understand habitat needs of otters and improve their continued recovery and management. My first chapter provides a brief overview of river otters and their ecological roles in freshwater …
Translocations Of North American Bison Across Large Climatic Gradients: Impacts On Thermoregulation, Body Size, And Helmintic Infection, Hayden Wolfe
Electronic Theses and Dissertations
Every year, one-eighth of all North American bison (Bison bison) are translocated, often across large climatic gradients. Over the last 16 years bison have been translocated from Wind Cave National Park in South Dakota to establish six herds across the United States central grasslands in Iowa, Missouri, Illinois, Indiana, and Kansas. Influence of climatic gradients on herd-level thermoregulation, body size, and helmintic infection were evaluated. Overall, 1174 thermal images and 1050 fecal samples were collected between 2021 and 2023. Physiological heat flux was used to measure thermoregulation, asymptotic body mass (ABM) was used for body size, and helminth genera abundance …
Improving Stream Connectivity In South Dakota, Colton Rainier Curtis
Improving Stream Connectivity In South Dakota, Colton Rainier Curtis
Electronic Theses and Dissertations
Stream connectivity is crucial for fish movement and genetic diversity in fragmented landscapes. Road-crossings often act as barriers, disrupting hydrology and isolating fish populations. The Southeast Aquatic Resources Partnership (SARP) has developed rapid road-crossing assessment protocols and tools to prioritize restoration projects. However, managers lack tools for planning, directing, and initiating roadcrossing assessments. Managers also require modeling approaches to effectively identify and monitor road-crossings across dynamic stream networks. Presented here is a case study offering a roadmap for effective implementation of collaborative road-crossing assessments and prioritization of remediation projects, alongside an exploration of predictive modeling approaches to identify problematic crossings …
Better Understanding The Barred Owl, Adam Lee Potts
Better Understanding The Barred Owl, Adam Lee Potts
Graduate Student Theses, Dissertations, & Professional Papers
This thesis research presents an analysis of barred owl nest site selection in an understudied region of their expanded range. The barred owl has dramatically expanded its range westwards over the last 150 years, prompting multiple conflicting reinterpretations of their species account. Hypotheses of range expansion are reviewed to provide context for this study’s research. This study gathers empirical data on nest site selection in the mixed conifer forests of Montana’s Seeley-Swan and Mission Valleys. Eight barred owl nests were located following extensive territory surveys. Field measurements of tree height and diameter using USFS Forest Inventory and Analysis (FIA) plot …
Integrating Western Science And Indigenous Knowledge For Just Practices In Conservation, Cierra Lea Keith
Integrating Western Science And Indigenous Knowledge For Just Practices In Conservation, Cierra Lea Keith
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Fire Severity Mediates Marten And Fisher Occurrence: Impacts Of The Dixie Fire On A Carnivore Community, Christopher James Collier
Fire Severity Mediates Marten And Fisher Occurrence: Impacts Of The Dixie Fire On A Carnivore Community, Christopher James Collier
Cal Poly Humboldt theses and projects
The consumption of an astounding one million acres resulted from California’s largest single fire to date, the 2021 Dixie Fire. The social and economic losses associated with the fire were immediately apparent, but the effects on wildlife remained unknown. While previous research has suggested mixed or low severity fire may be beneficial to certain wildlife species, the responses to megafires are poorly understood for many carnivores. To better understand these responses to severe fire, I used a random sampling design stratified by burn severity to survey in and around the Dixie Fire footprint using baited camera stations. This allowed me …
Interactions Between New Zealand Mud Snails (Potamopyrgus Antipodarum) And Toxic Cyanoabacteria (Anabaena) In Baduwa’T (Mad River), Humboldt County, California, Cecilia F. Kennelly
Interactions Between New Zealand Mud Snails (Potamopyrgus Antipodarum) And Toxic Cyanoabacteria (Anabaena) In Baduwa’T (Mad River), Humboldt County, California, Cecilia F. Kennelly
Cal Poly Humboldt theses and projects
Invasive species in freshwater systems are circulated around the globe, wreaking havoc on natural communities. The New Zealand mud snail (Potamopyrgus antipodarum) is a very successful aquatic invader that has established populations in freshwater streams, lakes, and rivers around the globe. The goal of this project was to evaluate the interactions of invasive New Zealand mud snails (NZMS) and toxic cyanobacteria Anabaena in the Mad River in Humboldt County, California. These two species of concern are found in similar habitats along the river, but their whether NZMS consume Anabaena or affect toxin production is unknown. First, I conducted …
Plasticity In Response To Temperature Magnitude And Variation---From Life History To Thermal Tolerance And Coloration, Austin Rex Hoffman
Plasticity In Response To Temperature Magnitude And Variation---From Life History To Thermal Tolerance And Coloration, Austin Rex Hoffman
University of the Pacific Theses and Dissertations
Warming associated with climate change has many direct and downstream effects on animals. For example, warmer developmental temperatures can improve heat tolerance and reduce insect melanization, which is related to coloration, thermoregulation, immunity, desiccation resistance, and potentially life-history traits, such as investment into reproduction and dispersal. Increased temperature variation is also a feature of climate change, and it may have a larger impact on animals than warming. However, I lack insight into the combined effects of temperature magnitude and variability on important traits of life history, thermal tolerance, and coloration. Thus, I integrated temperature variation into thermal performance using a …
Investigation Of L-Serine Synthesis And Transport As Stabilizing Feedback Mechanisms Within The Tsetse-Wigglesworthia Symbiosis, Ryan Phillips
Investigation Of L-Serine Synthesis And Transport As Stabilizing Feedback Mechanisms Within The Tsetse-Wigglesworthia Symbiosis, Ryan Phillips
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tsetse flies (Glossina morsitans), which are the obligate vectors of Old-World trypanosomes (Trypanosoma spp.) that cause African trypanosomiasis, have a bacteriome that houses the intracellular endosymbiont Wigglesworthia glossinidia. The ancient coevolution of these species has led to the integration of Wigglesworthia metabolism into tsetse physiology and a subsequent reliance on nutrient exchange for maintaining the fitness of both partners. The establishment of this obligate mutualism has facilitated the emergence of feedback mechanisms that stabilize the symbiosis, such as that which involves the exchange of L-serine and B vitamins. The Gammaproteobacteria Wigglesworthia supplement B vitamins lacking …
Aggressive And Non-Aggressive Behaviors In Mixed And Non-Mixed Dorymyrmex Smithi And Dorymyrmex Bureni Colonies Of Southeastern Georgia, Usa, Renee K. Nowicki
Aggressive And Non-Aggressive Behaviors In Mixed And Non-Mixed Dorymyrmex Smithi And Dorymyrmex Bureni Colonies Of Southeastern Georgia, Usa, Renee K. Nowicki
College of Graduate Studies: Theses & Dissertations
Dorymyrmex species, ‘pyramid’ or ‘cone’ ants, are Dolichoderines distributed across North America. Two relatively well-studied species, Dorymyrmex smithi and Dorymyrmex bureni, are commonly found throughout southeastern Georgia. These species are part of a socially parasitic relationship while simultaneously having starkly different colony structures. Dorymyrmex smithi is a polydomous, polygynous species with colonies that are often expansive, at times having hundreds to thousands of nests per colony. Dorymyrmex smithi is a temporary social parasite of D. bureni, a monodomous, monogynous species. The specific mechanism of this parasitism is currently unknown. Preliminary behavioral assay data from a limited number of …
Testing Differential Predation As A Mechanism Of Color Polymorphism In A Cryptic Lizard., Justin A. Sanclemente
Testing Differential Predation As A Mechanism Of Color Polymorphism In A Cryptic Lizard., Justin A. Sanclemente
College of Graduate Studies: Theses & Dissertations
Selection via predation is a strong evolutionary force on small organisms, producing unique phenotypic adaptations. In cryptic species, different populations may exhibit color polymorphisms to better match multiple substrates or backgrounds. Here, I conducted a clay model study in the Ocala National Forest of Florida (USA) to test predation as a selective mechanism for color polymorphism in the Florida scrub lizard (Sceloporus woodi). Clay models were constructed to resemble light and dark morphs of S. woodi and placed on contrasting substrates in longleaf pine and Florida scrub stands. It is hypothesized Florida Scrub Jays (Aphelocoma coerulescens) …
Long- And Short-Term Weather Variables Affect Capture Rates In Western Painted Turtles (Chrysemys Picta Bellii) In Marshall Co., South Dakota, Amy Dolan, Heather L. Waye, Peter Dolan
Long- And Short-Term Weather Variables Affect Capture Rates In Western Painted Turtles (Chrysemys Picta Bellii) In Marshall Co., South Dakota, Amy Dolan, Heather L. Waye, Peter Dolan
Biology Publications
Turtle populations are declining globally, and yet accurate long-term population surveys are often lacking. Even amongst widespread species, information on long-term population trends is largely missing. As such, studies on demographics, population structure, and factors that affect capture efficacy are needed. In 2019 we began a long-term study on Western Painted Turtles (Chrysemys picta bellii) in the Couteau des Prairie habitat in northeastern South Dakota. We captured turtles using several trapping techniques and investigated the effects of short- and long-term weather variables on catch per unit effort. Temperature was positively associated with daily capture rates, showing the strongest …
The Effects Of Human-Driven Land Use Change On American Alligator (Alligator Mississippiensis) Nesting Patterns, Madison Wallwork
The Effects Of Human-Driven Land Use Change On American Alligator (Alligator Mississippiensis) Nesting Patterns, Madison Wallwork
UNF Graduate Theses and Dissertations
American alligators (Alligator mississippiensis) have received little scientific attention in the context of human-driven land use change. The goal of my study is to investigate how land use change may be affecting the spatial ecology of alligator nesting in Florida. Areas directly impacted by humans are growing rapidly in Florida, yet the impacts of this land use change on alligator populations and reproduction are largely unknown. Alligators are ecosystem engineers and apex predators, and their nests often double as nests for other reptilian species. Therefore, it is imperative that we understand how human-driven land use change may be impacting …
Automatic Detection Of Birds In Images Acquired With Remotely Piloted Aircraft For Managing Wildlife Strikes To Civil Aircraft, Maurycio Rodrigues Oviedo, Flavio A. C. Mendonca Ph.D., Jose Cabrera, Cole A. Mcnall, Raymond Ayres, Ricardo Luís Barbosa, Rodrigo Gallis
Automatic Detection Of Birds In Images Acquired With Remotely Piloted Aircraft For Managing Wildlife Strikes To Civil Aircraft, Maurycio Rodrigues Oviedo, Flavio A. C. Mendonca Ph.D., Jose Cabrera, Cole A. Mcnall, Raymond Ayres, Ricardo Luís Barbosa, Rodrigo Gallis
International Journal of Aviation, Aeronautics, and Aerospace
Wildlife strikes represent a significant threat to aviation safety and economics, as evidenced by notable incidents such as the emergency landing of US Airways Flight 1549 in 2009. The Federal Aviation Administration (FAA) acknowledges this growing concern, as evidenced by its report on Wildlife Strikes to Civil Aircraft in the United States from 1990 to 2019.To address the need for improved risk management, airports conduct Wildlife Hazard Assessments (WHA), a laborious process typically relying on visual identification by Qualified Airport Wildlife Biologists (QAWB). However, technological advancements, such as Remotely Piloted Aircraft (RPA) and machine learning (ML), offer promising solutions to …
Complex Dynamics Of Coral Gene Expression Responses To Low Ph Across Species, Veronica Z. Radice, Ana Martinez, Adina Paytan, Donald C. Potts, Daniel J. Barshis
Complex Dynamics Of Coral Gene Expression Responses To Low Ph Across Species, Veronica Z. Radice, Ana Martinez, Adina Paytan, Donald C. Potts, Daniel J. Barshis
Biological Sciences Faculty Publications
Coral capacity to tolerate low pH affects coral community composition and, ultimately, reef ecosystem function. Low pH submarine discharges (‘Ojo’; Yucatán, México) represent a natural laboratory to study plasticity and acclimatization to low pH in relation to ocean acidification. A previous >2‐year coral transplant experiment to ambient and low pH common garden sites revealed differential survivorship across species and sites, providing a framework to compare mechanistic responses to differential pH exposures. Here, we examined gene expression responses of transplants of three species of reef‐building corals (Porites astreoides, Porites porites and Siderastrea siderea) and their algal endosymbiont communities …
Special Topic: Pest And Beneficial Bird Management, Breanna Martinico, Shannon Skalos
Special Topic: Pest And Beneficial Bird Management, Breanna Martinico, Shannon Skalos
Human–Wildlife Interactions
This is the call for papers for the special issue on Pest and Beneficial Bird Management.
Forthcoming Hwi Monographs
Human–Wildlife Interactions
The HWI Monograph Series is publishing open access monographs on free-ranging domestic cats and coyotes.
Cover, Editorial Staff, Journal Information
Cover, Editorial Staff, Journal Information
Human–Wildlife Interactions
This includes the cover, editorial staff, and journal information.
Grazing Management For Livestock, Free-Roaming Horses And Burros, And Resilience, Sherman R. Swanson
Grazing Management For Livestock, Free-Roaming Horses And Burros, And Resilience, Sherman R. Swanson
Human–Wildlife Interactions
Grazing management avoids overgrazing by allocating forage for livestock on the basis of animal unit months and managing wild and free-roaming horses (Equus caballus) and burros (E. asinus) to achieve and maintain an appropriate management level (AML) for each herd. Riparian green forage and water attracts cattle (Bos taurus) and equids when upland forage is brown. Key species that focus management for resilience to weather variation, fire, and floods are preferred forage plants for cattle and horses. They include riparian stabilizers such as densely rooted sedges and deep-rooted perennial grasses in sagebrush (Artemisia …
Cover, Editorial Staff, Journal Information
Cover, Editorial Staff, Journal Information
Human–Wildlife Interactions
This includes the cover caption, editorial staff, and journal information.
Preparing For Publication: An Inside Look At Production Processes And Recommendations For Authors Of Human–Wildlife Interactions, Rosanna M. Vail
Preparing For Publication: An Inside Look At Production Processes And Recommendations For Authors Of Human–Wildlife Interactions, Rosanna M. Vail
Human–Wildlife Interactions
This segment of The Back Page provides a transparent look at the journal's article production tasks, including pre-production, copyediting, layout, proofs, pre-publication, and publication, as well as recommendations for authors to reduce time to publication.
Impacts Of Wildlife–Vehicle Collisions Create Cascade Effects, S. Nicole Frey
Impacts Of Wildlife–Vehicle Collisions Create Cascade Effects, S. Nicole Frey
Human–Wildlife Interactions
This is the letter from the editor-in-chief of Volume 18, Issue 2.
New Associate Editors, S. Nicole Frey
New Associate Editors, S. Nicole Frey
Human–Wildlife Interactions
New associate editors include Brian S. Dorr and Jorge Tobajas.
Survival Of Translocated Coyotes In The Chicago Metropolitan Area, Usa, Charlotte R. Milling, Chris Anchor, Stanley D. Gehrt
Survival Of Translocated Coyotes In The Chicago Metropolitan Area, Usa, Charlotte R. Milling, Chris Anchor, Stanley D. Gehrt
Human–Wildlife Interactions
For nuisance animals, the general public perceives translocation to be a humane alternative to lethal control measures, but survival of translocated wildlife is often quite low due in part to increased movement post-release. Thus, for common species whose relocation generally serves a social rather than conservation purpose, translocation might not be correctly characterized when presented as nonlethal. We quantified release site fidelity and survival of coyotes (Canis latrans) fitted with very high frequency radio-collars and translocated within the Chicago Metropolitan Area, Illinois, USA, from 2000 to 2006. We also compared survival for 14 weeks post-collaring for our translocated …
Jack H. Berryman Institute Update, Julie K. Young, Becky Quay
Jack H. Berryman Institute Update, Julie K. Young, Becky Quay
Human–Wildlife Interactions
The Jack H. Berryman Institute at Utah State University, publisher of Human–Wildlife Interactions journal, is under new leadership to forward its mission of resolving human–wildlife conflicts through research, education, and outreach. This Back Page article from the director and the administrative and outreach coordinator of the Berryman Institute focuses on preparing to meet the challenges at the intersection of humans and wildlife.
Multi-Year Effectiveness Of Pzp-22 In Free-Roaming Suburban White-Tailed Deer, Allen T. Rutberg, Kali M. Pereira, Kayla A. Grams, John W. Turner Jr.
Multi-Year Effectiveness Of Pzp-22 In Free-Roaming Suburban White-Tailed Deer, Allen T. Rutberg, Kali M. Pereira, Kayla A. Grams, John W. Turner Jr.
Human–Wildlife Interactions
To address the challenge that is posed to the use of fertility control to mitigate human–deer (Cervidae) conflicts by the need to regularly re-inoculate free-roaming animals, we captured, ear-tagged, and hand-injected 68 individual adult female white-tailed deer (Odocoileus virginianus) with the PZP-22 immunocontraceptive vaccine from February through April, 2014 to 2017, in the Village of Hastings-on-Hudson, New York, USA. Approximately 2.5 years after initial treatments, we booster-darted 29 of the previously treated females with either PZP-22 or native PZP (ZonaStat-D). We observed fawn production between 2014 and 2021. The combination of initial PZP-22 hand-treatments followed by single dart-delivered PZP …