The Effect Of An Invasive Species (Lantana Camara) And A Fast-Growing Herb (Acanthus Pubescens) On The Plant And Animal Communities In Kibale National Park, Uganda, Kathleen Bufka

Theses and Dissertations

Fast-growing plant species, like Lantana camara and Acanthus pubescens, could threaten biodiversity in Kibale National Park, Uganda. I surveyed plants and wildlife in areas where these plants were frequently encountered compared to those areas where they are infrequent. I found mixed results based on plant traits and the animals considered. My findings support management efforts on these two species to prevent forest degradation.

Stand Strucuture Of Planted Stands In Storm-Water Retention Basins, Jason Lanza

Electronic Theses and Dissertations

Trees assist in stormwater retention basin functionality as efficient sources of water removal, and determining stand structure and leaf area of forests can be a measure of their effectiveness. The structure of forest stands on these basins managed for runoff mitigation has received little attention. We investigated the structure and species composition/diversity (tree and herbaceous) of planted, managed stands and naturally regenerated stands on stormwater retention basins managed by Harris County Flood Control District in Harris County, Texas. We determined stand structure variables (trees per hectare, basal area per hectare, quadratic mean diameter, relative density, average tree height, and percent …

Restoring A Longleaf Pine Savanna In The Wiregrass Gap: Community Responses To Post-Harvest Slash Manipulation, Eva Purcell

All Theses

Now reduced to just a fraction of their historical range, Longleaf pine savannas in the southeastern United States are home to a wide array of species, some of which are threatened or endemic. These characteristics have inspired widespread restoration initiatives in recent decades, accompanied by an expanding literature on how management techniques affect restoration outcomes. However, research is lacking in a unique region of longleaf pine’s range, where the dominant fire-carrying grasses are different: the Wiregrass Gap. This study investigated the effects of three different slash manipulation treatments on restoration outcomes of a Wiregrass Gap longleaf pine savanna. Specifically, we …

Assessment Of The State Forest Protection Management And Community Participation In The Central Highlands, Vietnam, Do Cao Phan, Tran Thi Lan

ASEAN Journal of Community Engagement

This study focuses on state forest protection management in Central Highlands Vietnam, particularly in the Krong Bong District, Dak Lak Province, examining the role of community participation. The Central Highlands, a region rich in biodiversity and ecological significance, is severely impacted by deforestation, illegal logging, and land-use changes. This study assesses the current state of forest governance and proposes sustainable development improvement strategies. The research employs a mixed-methods approach, integrating secondary data, such as government reports and forest management reports from Krong Bong District, Đak Lak Province, as well as previous studies, with primary data collected from surveys of 96 …

Integrating Belowground Recovery Into Tropical Forest Restoration Design And Monitoring, Lauren Toro, Leland K. Werden, Shalom D. Addo-Danso, Kelly M. Andersen, Sarah Batterman, Matilde M. Bragadini, Pooja Choksi, Rebecca J. Cole, Liza S. Comita, Daniela Cusack, Daisy H. Dent, Lee H. Dietterich, Joshua B. Fisher, Katrin Fleischer, Lucia Fuchslueger, Nohemi Huanca-Nunez, Janey R. Lienau, Lindsay A. Mcculloch, Ember M. Morrissey, Jennifer S. Powers, Mareli Sánchez-Juliá, Oscar Valverde-Barrantes, Anita Weissflog, Michelle Y. Wong

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

There is growing recognition that tropical forest restoration is key for sequestering carbon and enhancing ecosystem resilience. Soils, roots, and soil biota are central to ecosystem function and services, but belowground recovery is largely overlooked in restoration monitoring frameworks. Here, we outline current understanding of the links between above- and belowground recovery in tropical forests by examining how belowground properties before and after intervention influence recovery; by evaluating whether aboveground recovery can serve as a proxy for belowground dynamics; and by proposing a blueprint for monitoring dynamic soil physical (bulk density, aggregate stability), chemical (organic matter or carbon, pH), and …

Catching A Fever: A Comparison Of Vachellia Xanthophloea Populations In The Limpopo And Luvuvhu River Floodplains Of The Makuleke Contractual Park, Kianie B. David

School of Natural Resources: Dissertations, Theses, and Student Research

This study investigates patterns of stand structure regeneration, growth characteristics, and coarse woody debris (CWD) patterns in Vachellia xanthophloea (fever tree) stands within the Makuleke Contractual Park (MCP), a semi-arid savanna system in northern Kruger National Park (KNP), South Africa. Fieldwork was conducted across two stand types: a monospecific fever tree stand in Rietbok Vlei and a mixed-species stand in the Western Nhlangaluwe Floodplain where fever tree is established with Faidherbia albida (ana tree). Data were collected from 20 total 1/4-acre (1,011 m²) circular plots between both stands in 2024 and 2025, including seedling root collar diameter (RCD), …

Assessing The Influence Of Afforestation On Soil Quality And Soil Organic Carbon: A Case Study In Rashaya District, Lebanon, Mohammad Saleh, Wael Mostafa, Safaa Baydoun, Hisham Salman, Jamilah Borjac

BAU Journal - Science and Technology

Afforestation is a promising strategy for improving soil quality and enhancing carbon sequestration, contributing to climate change mitigation efforts. This study assessed the impact of afforestation on soil parameters in two afforested areas and one natural forest, compared with adjacent non-forested sites in Rashaya al-Wadi, Lebanon. Soil samples (0–30 cm depth) were analyzed for texture, pH, electrical conductivity (EC), soil organic matter (SOM), soil organic carbon (SOC), organic nitrogen (ON), mineral nitrogen (MN), and available phosphorus (AP) using ISO and standardized protocols at the Lebanese Agricultural Research Institute (LARI). The findings indicate that afforestation significantly increased SOM, SOC, and ON, …

Living Heritage, Resilience And Ethically Informed Infrastructures In Malawi, Martha B. Lerski, Frank Puluputu Mwale

Publications and Research

Rooted in a rural community’s needs, this paper explores how historically, and ethically informed infrastructures can support community engagement towards identification, documentation, and dissemination of local, traditional, and indigenous knowledge relating to climate change. The paper examines climate adaptation and sustainability issues through the lenses of community organizing and Library & Information Science best practices. It draws on a growing body of literature identifying a role for expanded epistemological and subject discipline perspectives. While the impacts of climate on material culture are increasingly recognized, intangible, and biocultural heritage have not received as much attention. Living heritage traditions and knowledge systems …

Indigenous Science And The Legacy Of Fire: Resilience, Fuels, Mosaics, And Eco-Cultural Landscapes In Oregon’S Coastal And Cascade Range, Julia Alcalá

University Honors Theses

Most of Oregon's western Cascade and Coastal range is a landscape that has historically been considered devoid of mid to low-intensity fires by Western science. However, for time immemorial, Indigenous peoples have been stewarding the forests through the use of "good fire," creating diverse and heterogenous landscapes with mixed fire regimes, ranging from less than a decade to several centuries since the last fire, resulting in a mosaic of patchy forest, oak savannas, prairies, and wetlands. Yet centuries of Indigenous displacement, cultural assimilation, and suppression of cultural burning contributed to this prevailing belief. Despite that, in recent decades, Western scientists …

Pollinator Plant Communities Within Restored Montane Longleaf Pine Ecosystems, Hanen Van Rossem

Master's Theses

Historically the fire-dependent and biodiverse longleaf pine (Pinus palustris) ecosystem was the dominant ecosystem of the Southeastern US. This ecosystem’s range was massively reduced due to land conversion and fire exclusion, causing the decline of many native species. Efforts to restore and protect longleaf pine stands are now ongoing with the goal of expanding habitat and refuge for threatened species. Differences in restoration practices and prior land use may influence the extent to which restored habitat patches can support pollinators and their plants. This study compared pollinator plant biodiversity between restored neighboring montane longleaf pine stands that differed in …

Growing Confidence: Women Forest Landowner Workshops In Georgia, Neil R. Dingley Jr., Nicholas E. Fuhrman, Kris Irwin, Elizabeth Mccarty

Journal of Human Sciences and Extension

The number of female forest landowners (FFLs) has been growing throughout the United States. This growth demands educational outreach for a demographic that is often behind their male counterparts in experience and education. The purpose of this exploratory study was to design and host educational workshops geared towards FFLs and to answer the following questions using quantitative and qualitative methods: (1) Are the workshops changing FFLs’ confidence in land management? (2) What are FFLs’ intentions after attending workshops? (3) Does confidence or participants’ intentions with their land vary with demographics? (4) Are workshops providing a platform to start FFL social …

Considerations And Techniques For Producing Urban Tree Canopy Maps Using Freely Available And Accessible Methods, Hugh Reed Ellerman

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Urban forests are valued as green infrastructure for the variety of benefits they provide across ecological, social, public health, and economic domains. To understand the distribution of trees, maps are required. Many methods of mapping tree cover use expensive and data-intensive datasets such as hyperspectral and LiDAR imagery, making these methods inaccessible to municipal forest managers. Variations in the modelling approaches of existing, freely available methods are not addressed in sufficient enough detail to understand the trade-offs implicit in these variations. Further, characteristics of urban tree canopy mapping (high spatial resolution imagery, heterogeneous urban environments, the importance of the tree …

The Forest Through The Trees: Modeling The Ecological Niche And Potential Assemblage Distribution Of Oak-Hickory Forests Across The Eastern U.S., Elijah Worley

Electronic Theses and Dissertations

Understanding how tree species’ ranges and populations may shift by the end of the 21^st Century is critical for effective conservation and forest management. Ecological niche models are widely used to predict species distributions by modeling the relationships between environmental variables and species presence. While numerous models have been developed for individual tree species across the USA, there is limited research on how tree species assemblages, such as oak-hickory forests, will respond to changes in climate over time. Maxent modeling software was used to predict potential shifts in suitable habitat for the oak-hickory forest type, based on environmental variables …

Edge Feathering Across Forest-Meadow Ecotones Increases Light Heterogeneity And Understory Plant Diversity, Aruni Kadawatha, Jean H. Burns

Faculty Scholarship

Ecotones, the transitional zones between distinct habitats, are vital for ecosystem functioning and habitat diversity. Traditional management practices frequently create abrupt boundaries, leading to stressful conditions for organisms. To address this challenge, an underutilized land management technique called “edge feathering”, which involves gradual thinning of the canopy along the forest edge, has been introduced. This study, con- ducted at Holden Arboretum in Kirtland, Ohio, investigated the effects of edge feathering on light availability and understory plant diversity in edge feathered and control treatments. We calculated the coefficient of variation in light availability as light heterogeneity and plant diversity indices at …

Understanding The Accuracy And Best Use Of The Woodland Stick As A Tree Height And Diameter Measurement Tool: A Case Study In Oregon, Francisca Belart, Lauren Grand, Alicia Christiansen

Journal of Extension

We conducted a study to assess the accuracy of the Woodland Stick in determining tree diameter and height as compared to professional measurements and how bias can affect tree volume calculation. After comparing professional measurements with five non-professionals (NP’s) using the Woodland Stick, we found that three out of five NP’s had significant differences in mean dbh, and all of the NP’s had significant differences in mean total height. The overall bias for dbh across users was +0.5 inches and +5.1 ft for height. These deviations can result in volume differences between 0 and 30 bf on a single tree.

Attitudes Toward The Continued Protection Of Grizzly Bears Under The Endangered Species Act, John A. Vucetich, Jeremy T. Bruskotter

Michigan Tech Publications

In January 2025, the U.S. Fish & Wildlife Service published a proposed rule to continue protecting grizzly bears in the contiguous United States under the Endangered Species Act (ESA). The proposed rule and guidance for how the public can comment on the proposed rule can be found at this link: https://www.fws.gov/press-release/2025-01/usfws-proposes-update-grizzly-bear-esa-listing-management

In January 2025, we implemented a web-based survey designed to assess the attitudes of residents of the contiguous United States, as they pertain to the appropriateness of continuing protection of grizzly bears under the ESA. A large body of prior research indicates that individuals’ attitudes toward species protections can …

Timber Talk, Vol. 63, No. 3, July 2025 (Special)

Timber Talk: Nebraska Forest Industry Newsletter

Timber Talk, Vol. 63, No. 3, July 2025 (Special)

2025 Annual Report, Tennessee. Division Of Forestry And Tennessee. Department Of Agriculture

Forestry Annual Reports

This annual report presents an overview of Tennessee Forestry Commission programs and management.

Assessing Understory Along The Elk River (Hikshari') In Headwaters Forest Reserve, Humboldt County, California, Julie R. Meyers, Aliyah M. Ingram, Caleb N. Larkin, Joshua L. Carpenter

Environmental Science & Management Senior Capstones

Northern California’s extensive logging history and lack of forest management has altered old-growth coast redwood (Sequoia sempervirens) forests, leaving dense, homogenous second and third-growth forest stands. This has led to the use of modern restoration techniques such as variable density thinning (VDT) which aims to rehabilitate old-growth forest conditions by improving stand heterogeneity and light availability for understory species. Our study was done in Headwaters Forest Reserve (HFR) along the Elk River (Hikshari’) Trail in Humboldt County, California. Initially, the project was supervised by the Bureau of Land Management (BLM) Arcata Field Office. However, the 2025 U.S. government …

Six Rivers National Forest Hazardous Fuels And Fire Management Project 2025 Orleans Complex Fire Effects From 9/13/25 - 9/14/25, James L. Parr, Nosheen Maung, Darby J. Lewis, Javier E. Margarito, Giancarlo Golloti

Environmental Science & Management Senior Capstones

The 2025 Orleans Complex affected the Klamath National Priority Landscape, designated by Congress as a priority to reduce fuel load and mitigate wildfire risk near rural, at-risk communities. To address the threat of large destructive wildfires, the 2023 Six Rivers Hazardous Fuels and Fire Management Project identified desired ecological conditions, using the right type of fire at the right time and place.