Forest Biology Commons^™

Age Class Is Not Related To Size Or Composition Of Home Ranges Among Suburban White-Tailed Deer During Parturition, Nathan D. Pyburn

Journal of Earth and Life Science

How white-tailed deer use the landscape in an urban environment can help us understand the effects of urbanization on deer populations. White-tailed deer form observable matriarchal hierarchies in studied populations. This study examines the matriarchal structure, home range size, and home range composition of 25 collared white-tailed deer within the city limits of Bemidji, MN. The results found no significant difference between age class and home range size or composition. However, movement metrics from yearling and mature age classes were more similar than the juvenile age class females. I propose this is because social acceptance between mature females was higher …

Fine Root And Ectomycorrhizal Functional Traits Of Quercus Rubra Populations From Across A Latitudinal Gradient, Emma L. Shedd

Dissertations, Master's Theses and Master's Reports

Forests are increasingly considered for their carbon sequestration value, but their ability to store carbon is dependent on a close balance between carbon fluxes into and out of ecosystems. Nutrient uptake of roots and associated symbiotic communities results in respiratory carbon release, which is projected to increase with warming and represents a substantial uncertainty in earth system modeling. Traits that are functionally related to nutrient uptake can be used to estimate carbon fluxes, but our understanding of the trade-offs that govern root, and especially fungal, traits is limited. Fine roots in surface soils are responsible for the bulk of plant …

Sugar Maple (Acer Saccharum Marsh.) Tree-Ring Growth And Carbon Stable Isotope Responses To Nitrogen And Climate, Libbie Ring

Dissertations, Master's Theses and Master's Reports

This dendrochronological and stable carbon isotope study used tree rings from sugar maple (Acer Saccharum Marsh.) collected at long-term nitrogen (N) amended sites throughout Michigan to understand N amendment and deposition, climate, and growth relationships. Climate responses varied by site, however, we found importance in grouping sites by “productivity” which is related to inherent N and soil nutrients. Our results did not detect an overall effect of N amendments on growth during the treatment period. However, data shows N amendments benefiting larger diameter trees, while smaller diameter trees responded more positively without amendments, especially on more productive sites. Results …

Small Mammal Diet As An Indicator Of Lyme Disease And The Road To Endemicity In Michigan’S Upper Peninsula, Jacqueline E. Suits

Dissertations, Master's Theses and Master's Reports

Lyme disease is expanding in the Upper Midwest due to climate change, forest degradation, and shifting wildlife communities. Small mammals are key reservoir hosts, and their foraging behavior offers insight into environmental conditions that sustain pathogen transmission. We used DNA metabarcoding to investigate small mammal diets across seasonal, spatial, and infection gradients in Michigan’s Upper Peninsula. We identified dominant dietary plant and arthropod taxa, seasonal shifts, and slight variation by species, site, and Lyme infection status. Taxa associated with Lyme-positive individuals were primarily linked to moist, edge, and disturbed habitats, areas that also support ticks and disease spread. These results …

Rotten Through The Cores: What Decomposition Can Tell Us About Carbon Cycling, Eileen C. Reeves

Dissertations, Master's Theses and Master's Reports

Sequestration of carbon (C) in forests means that the C is stored in the ecosystem and not emitted to the atmosphere, thus slowing the accumulation of greenhouse gases and mitigating the acceleration of manmade climate change. Quantifying the pools and fluxes of C in forests is therefore of considerable interest to landowners, policy makers, and scientists.

Decomposition is an ecological process central to the movement of C through ecosystems. This dissertation uses several techniques to help determine the factors influencing the speed of decomposition and long-term fate of decomposed plant material. In Chapter Two, phospholipid fatty acid analysis was used …

Acer Rubrum: Descending Towards Forest Dominance, Elyssa L. Pearson, Christopher M. Gough

UROP Posters

Acer rubrum, more commonly known as the red maple, is a hardwood, late successional species of tree commonly planted for its deciduous nature and vibrant coloring of its leaves in the beginning of autumn (Abrams, 1998). The species is very tolerant of varying light and soil moisture levels and often dominates sub and mid-canopy levels of hardwood forests (Missouri Botanical Gardens). It was hypothesized that as the I moved from an upland location to a lowland location near a wetland that the A. rubrum trees would be more productive and have a greater above ground biomass. This was not …

The Role Of Floodplain Complexity In Wood Turtle Habitat Use, Laura S. Deming

Antioch University Dissertations & Theses

Wood turtles occupy cold, low-gradient riverine habitat throughout the northeastern United State and southeastern Canada. Stream alterations, such as dams, channel straightening, and floodplain development have diminished the natural hydrologic and sedimentation regimes that result in complex channel and floodplain geomorphology. Studies throughout the species’ range have quantified many aspects of their habitat, but none have quantified components of geomorphology of wood turtle sites. The goal of this study was to explore the role of stream channel and floodplain geomorphology in wood turtle habitat use, with specific objectives to (1) quantify components of stream channel and floodplain geomorphic complexity, (2) …

Modeling Forest Stewardship In Goukdi’N: An Assessment Of Carbon, Wildlife Habitat, And Fire Resilience In A University Forest, Benjamin Stock

Cal Poly Humboldt theses and projects

This thesis presents a forest management plan for Goukdi’n (also known as the Jacoby Creek Forest University Tract), a coast redwood–tanoak–Douglas-fir forest within the ancestral homelands of the Wiyot Tribe. This project addresses the need for a forest stewardship approach that supports ecological resilience, cultural values, and long-term forest health in a landscape shaped by industrial logging, fire exclusion, and decades of under-management. To evaluate potential management pathways, forest growth modeling was conducted using the USFS Forest Vegetation Simulator (FVS) to compare three management prescriptions focused on carbon storage, fire resilience, and structural heterogeneity and a no-action alternative. Model outputs …

Economic Analysis And Profitability Of Honey Production And Marketing In Cross River State, Nigeria, Joseph A. Ugbe, Tee T.N., Ancha P.U

Journal of Bioresource Management

The significance of honey in the socio-economic livelihoods of rural and semi-urban populations is paramount, as it tackles issues such as unemployment, income, and ecosystem preservation. The decrease in the timber industry has caused numerous individuals who rely on forests for their income to be without jobs, making it difficult to find other ways to make a living. This study examines the economic analysis and profitability of honey production and marketing in Cross River State, Nigeria, over 5 years (2017-2021) for sustainable forest management. Six hundred and eighty-four (684) respondents were selected from three ecological zones in the state using …

Assessing Ectomycorrhizal Advantage On Tree Species Within Differing Soil Materials In Spring Mountains, Nevada, Kirsten Soriano, Riley Jones, Daniel Thompson

Undergraduate Research Symposium Posters

Ectomycorrhizal fungi (ECM) form symbiotic relationships with their partner plant, creating root systems which allow for the exchange of nutrients among connected plants. The Spring Mountains National Recreation Area (NRA) in Southern Nevada is the study site for examining ECMs due to its diverse ecosystem with numerous inhabiting species. To assess the effects of ECMs on the tree composition, literature review was conducted to outline previous methods. Through data analysis and observations of the sample sites, it is concluded that ECMs are highly likely to have an effect on tree composition of the Spring Mountains NRA. The purpose of this …

Place, Space, And Shifting Views Of Nature, Rachel Tracey

Runkle Woods Symposia

In her reflective presentation, Rachel Tracy explores her evolving relationship with nature and wilderness. Initially disinterested and uncomfortable in natural settings, she describes how her perspective shifted through class discussions, personal reflection, and immersive experiences in the outdoors. Concepts such as “space versus place” helped her understand the emotional and historical significance of natural environments. Through this journey, she discovered joy in simply being present in nature, ultimately gaining a deeper appreciation for the natural world and its ability to exist and thrive without human involvement.

Culture, Nature, And Reflection: The Settler’S Impact On Life Today, Erin Thomas

Runkle Woods Symposia

Erin Thomas, a senior English major at Wright State University, reflects on the intersection of wilderness, identity, and cultural erasure. Drawing from her Indigenous heritage and experiences in the course Woods and Wilderness, she critiques the romanticized, Eurocentric view of nature as untouched and separate from humanity. Instead, Thomas highlights how wilderness has been shaped by settler colonialism and exclusionary narratives that often ignore Indigenous presence and histories. Her presentation calls for a more inclusive and honest understanding of wilderness—one that honors marginalized voices and acknowledges the land’s complex cultural past.

Wilderness Myth And Reality: Human Views And Uses Of Nature, Evan Hardern

Runkle Woods Symposia

In his essay and presentation, Wright State English major Evan Harder critically examines modern conceptions of wilderness and challenges the Romantic ideal that moral purity and personal virtue are inherently tied to time spent in nature. Drawing on writers such as Wordsworth, Emerson, and Thoreau, Harder interrogates the cultural myth of wilderness as a pristine, untouched realm separate from civilization. He argues that our understanding of nature is a constructed concept—born from the development of cities and agriculture—and often overlooks the long histories of human habitation in places now designated as “natural” or “wild.” Through examples like Cuyahoga Valley National …

The Concept Of Wilderness In Western Culture And Its Sacredness, Shannon Doyal

Runkle Woods Symposia

Shannon Doyal, a Professional Writing student at Wright State, explores how wilderness has been perceived throughout American history—as both a physical space and a powerful spiritual symbol. Drawing from Indigenous perspectives, early settler narratives, Transcendentalist writings, and American literature, she traces the evolving cultural and emotional significance of wilderness. From a place of fear and survival to one of introspection and sacred connection, wilderness reflects our changing relationship with nature and ourselves. As someone whose spirituality honors the cycles of nature, Doyal argues that reclaiming wilderness as a sacred and emotional space is vital—not only for environmental preservation but also …

Endangered Bats In The Runkle Woods, Volker Bahn

Runkle Woods Symposia

Since 2019, Dr. Volker Bahn’s lab has been monitoring bat populations in the Runkle Woods and nearby sites, using acoustic detectors to track species presence and activity over time. With bats representing about 20% of all mammal species globally, their ecological role—particularly in insect control—is vital. The presentation highlights the diversity of local bat species, with 10 of Ohio's 11 expected species documented, ranging from the abundant big brown and red bats to the federally endangered Indiana and northern long-eared bats. Dr. Bahn discusses patterns in bat activity across years, potential drivers such as precipitation, and the concerning declines in …

Water Quality Management In The Runkle Woods, Krystal Demarco, Donavon Mishler-Laporte, Cassie Dunn, Parneet Dhillon, Reagan Hardyman

Runkle Woods Symposia

This project addresses the growing issue of salt pollution in Wright State Woods, with a specific focus on sodium chloride runoff from deicing agents. Elevated salt levels, stemming from university parking lots and surrounding infrastructure, have been linked to soil degradation, vegetation stress, and aquatic habitat damage. By analyzing salt flow patterns and assessing ecological impacts, including EPA-reported chloride violations, the team identified critical areas of concern such as Outfall #2. Proposed mitigation strategies include the use of salt-tolerant tree species, alternative deicers (e.g., acetate- or carbohydrate-based), physical barriers, and expanded retention ponds and filter dams.

Invertebrates As Indicators Of Water Quality In The Runkle Woods, Dillynn Blevins, Bhavishya Ratnavelu, Lauren Stetz, Corey Walls

Runkle Woods Symposia

This project investigates water quality and aquatic invertebrate habitat health in the Wright State Woods, aiming to assess current conditions and implement targeted conservation strategies. Using indicators such as dissolved oxygen, nutrient concentrations, and the presence of sensitive macroinvertebrates (e.g., mayflies, stoneflies, caddisflies), the team evaluates stream health. Data collection follows established protocols, including EPT indexing and seasonal surveys. Conservation recommendations include stream aeration maintenance, removal of non-native vegetation, soil inoculation, and the construction of rain gardens and green roofs to reduce runoff.

An Accessible Trail For The Runkle Woods, Sarah Bingham, Terri Dozier, Logan Huber, Nicole Owino, Nathan Shafer

Runkle Woods Symposia

This presentation outlines a student-led initiative to enhance a pre-existing trail in the Runkle Woods with educational conservation projects and signage. The project aims to increase accessibility and student engagement with Wright State’s natural areas. Three key conservation efforts are highlighted along the trail: prairie restoration to support native biodiversity and pollinators, erosion and runoff mitigation using native vegetation and riff-raff, and bat conservation through habitat preservation and installation of artificial roosts. The project emphasizes experiential learning, sustainability, and community involvement in environmental stewardship.

Management Of The Invasive Honeysuckle (Lonicera Maackii), Mesa Grine, Daniel Hazelett, Cassie Healy, Padma Deepika Kandregula

Runkle Woods Symposia

This presentation addresses the ecological threat posed by invasive honeysuckle in the Runkle Woods on Wright State's campus. Originally from Europe and Asia, honeysuckle aggressively outcompetes native flora due to its rapid growth, shade tolerance, and allelopathic properties. The students observed widespread honeysuckle in both new and old growth forest areas, with greater density in younger regions. Ineffective control methods—such as cutting without herbicide—often worsen infestations. Drawing on a regional study, the students propose a targeted management plan involving cutting and herbicide application, stem injection for larger plants, and reintroducing native species like spicebush. Their strategy aims to reduce honeysuckle …

Old Growth In The Runkle Woods, Madeline Greene, Lindsay Smith, Matt Tyren, Leif Walters

Runkle Woods Symposia

In this conservation proposal, Wright State students focus on protecting the old growth areas of Runkle Woods—a rare and ecologically significant habitat in the Eastern United States, where only about 1% of such forests remain. Home to trees over 200 years old and critical species like endangered bats and white oaks, this 100-acre area faces threats from invasive species, deer overpopulation, littering, and urban runoff. Currently, only 15 acres are legally protected. The students propose expanding the easement, involving experts and graduate students in ongoing research and stewardship, and increasing public engagement through educational walks and increased and updated signage. …

Up In Smoke: Indigenous Techniques To Combat Climate Change And Increase Biodiversity, Brad Kerry

Runkle Woods Symposia

Brad Kerry explores how Indigenous land management practices—particularly the use of prescribed fire—can be reintroduced to restore the Runkle Woods to its pre-colonial ecological state. Drawing on archaeological evidence, historical tree surveys, and ecological data, the presentation highlights how periodic, low-intensity fires historically maintained the forest’s biodiversity, promoted fire-adapted species like oak and hickory, and suppressed invasive plants. Kerry advocates for carefully planned, small-scale burns to combat "mesophication"—a shift toward shade-tolerant, fire-averse species—while increasing forest resilience to drought, invasive species, and climate change. The presentation underscores the ecological benefits of fire and outlines practical considerations for reintroducing controlled burns as …

Protecting Glen Helen With A Conservation Easement, Nick Boutis

Runkle Woods Symposia

Part 2 of the "Protecting Glen Helen with a Conservation Easement" presentation. This presentation offers an overview of Glen Helen, a 1,125-acre private nature preserve in Yellow Springs, Ohio, detailing its ecological significance, educational mission, and recent conservation efforts. Nick Boutis describes the preserve’s history, from ancient Indigenous use to its development as a resort and eventual donation to Antioch College. The focus centers on the complex, multi-year collaboration that led to establishing a permanent conservation easement, which now protects the land from development and subdivision. The presentation also highlights Glen Helen’s ongoing stewardship work, including habitat restoration, environmental education, …

Tecumseh Land Trust: Land Trusts And Land Preservation, Michele Burns

Runkle Woods Symposia

Part 1 of the "Protecting Glen Helen with a Conservation Easement" presentation. Michele Burns introduces the concept of land trusts—nonprofit organizations that protect various types of land, particularly through conservation easements, which are legally binding agreements that restrict development and preserve land forever. She explaines how Tecumseh Land Trust, founded in 1990, operates in southwest Ohio to protect farmland and natural areas without owning land directly and their work in protecting the Glen Helen preservation.

Opening Remarks, Volker Bahn

Runkle Woods Symposia

Dr. Volker Bahn welcomes everyone to the 2024 Runkle Woods Symposium. This year's symposium is held in collaboration with the REACH Native American Heritage Festival. The event began with a land acknowledgement written by Shane Creepingbear in collaboration with Chief Ben Barns and other, recognizing the Indigenouse peoples whose lands we occupy and emphasizing our reponsbility to protect and restore the natrual word.

Scaling Individual Tree Transpiration With Thermal Cameras Reveals Interspecies Differences To Drought Vulnerability, Mostafa Javadian, Donald M. Aubrecht, Joshua B. Fisher, Russell L. Scott, Sean P. Burns, Jen L. Diehl, J. William Munger, Andrew D. Richardson

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Understanding tree transpiration variability is vital for assessing ecosystem water-use efficiency and forest health amid climate change, yet most landscape-level measurements do not differentiate individual trees. Using canopy temperature data from thermal cameras, we estimated the transpiration rates of individual trees at Harvard Forest and Niwot Ridge. PT-JPL model was used to derive latent heat flux from thermal images at the canopy-level, showing strong agreement with tower measurements (R2 = 0.70–0.96 at Niwot, 0.59–0.78 at Harvard at half-hourly to monthly scales) and daily RMSE of 33.5 W/m2 (Niwot) and 52.8 W/m2 (Harvard). Tree-level analysis revealed species-specific responses to …

Latticed Stinkhorn, Emilee G. Seigworth

PANDION: The Osprey Journal of Research and Ideas

Artist Statement

Latticed Stinkhorn is a watercolor piece originally created for the special gallery of the 2023 Scientific Illustration course at the University of North Florida. It was inspired by my enduring fascination with the world of fungi, particularly specimens of the family Phallaceae. This watercolor piece offers a simple perspective of Clathrus ruber, a species commonly referred to as Latticed Stinkhorn. Like many members of the family, the reproductive fruiting body first surfaces encased in a cream-colored soft shell with a texture comparable to a leathery reptile egg. As the body ages, the initial shell disintegrates to reveal a …

Chinese Tallow Long-Term Impact On Stand Dynamics In A Bottomland Hardwood Forest Following Vegetation Management, Nicklaus R. Langlois

Electronic Theses and Dissertations

Chinese tallow (Triadica sebifera (L.) Small) is an invasive tree known to have negative impacts on bottomland hardwood forests. Chinese tallow is proficient in reproducing and surviving in bottomland hardwood forests because it is more flood and shade tolerant than most native trees. The long-term effectiveness of Chinese tallow control is an important topic to research as only a few long-term studies of Chinese tallow control have been conducted. A 10-year re-measurement of 22 paired plots installed in 2012 on the Pineywoods Mitigation Bank near Diboll, Texas following herbicide treatments examined Chinese tallow and native tree stand structure. Each …

Living Dead Forests: Assessing Detrital Services In Puget Sound Pseudotsuga Menziesii Ecosystems, Forrest Becker

Capstone Collection

Coarse woody debris (CWD), the detrital result of down wood recruitment, contributes to wildlife habitat, nutrient cycling, morphological processes like soil formation, and each forest’s sense of place but if undermanaged can fuel wildfires or obstruct stakeholder use. Despite its ubiquity in Puget Sound Douglas fir (Pseudotsuga menziesii) forests in Washington, USA, few studies quantify the exact ecosystem services which down wood provides. This study seeks to understand how forest managers can estimate the ecosystem services of down wood and how human communities perceive down wood management between community, public, and private Douglas fir (P. menziesii) …

I’M A Forest, Not A Saltmarsh, Captain: Carbon And Sap Flow Dynamics In Coastal Forested Wetlands Of The Southeastern United States, Chris Shipway

All Theses

Coastal forested wetlands are identified as some of the highest-priority ecosystems for climate change mitigation. Here, we present two studies conducted in these unique ecosystems.

The first assessed changes in aboveground vegetative C stocks along the estuarine-riverine gradients of the Winyah Bay in South Carolina and the Savannah River in Georgia, using a space-for-time substitution to increase understanding of the impacts to upper estuarine forested wetlands from relative sea level rise. Standing C stocks on the Savannah River averaged 183.6 Mg C ha^-1, while sites on the Winyah system averaged 162.3 Mg C ha^-1. The largest …

The Role Of Forest Disturbance And Habitat Characteristics In Shaping Arthropod Ecology., Kane Alec Lawhorn

Electronic Theses and Dissertations

Disturbances in forests often generate dead wood, which is an important resource for a variety of arthropods. In tropical wet forests where fire is rare, lightning and branchfalls are common disturbances that create canopy gaps with associated large amounts of localized dead wood. By contrast, prescribed fire is a common disturbance in temperate forest that creates habitat heterogeneity and widely dispersed dead wood resources. The ecological effects of these disturbances on arthropod communities are largely unknown. This dissertation investigates how disturbance and habitat associations in both tropical and temperate forest shape arthropod ecology. Throughout, I primarily focus on beetles, ants, …