University of Wisconsin-Milwaukee
Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.
Utah State University
Yale University
The University of Maine
Michigan Technological University
Purdue University
Comparisons Of Above- And Below-Ground Carbon Storage In A Northeastern Illinois Urban Forest Following Rhamnus Cathartica And Fraxinus Spp. Removal,
2023
DePaul University
Comparisons Of Above- And Below-Ground Carbon Storage In A Northeastern Illinois Urban Forest Following Rhamnus Cathartica And Fraxinus Spp. Removal, River Sanchez-Dudik, Elene Drosos
DePaul Discoveries
This study focused on quantifying potential differences in ecosystem services (carbon storage, soil organic matter, macroarthropod density) in a small, partially restored urban forest in order to determine if common buckthorn and standing dead ash removal effects can be detected while restoration is on-going. We calculated aboveground carbon storage (tons/total area) using whole tree biomass equations and compared this to i-Tree Canopy estimations. We collected SOM through loss-on-ignition and collected macroinvertebrates by pitfall trapping to determine differences along transects. Aboveground carbon storage, soil organic matter, and macroinvertebrate total results for this study were found to be statistically not significant, indicating …
Willow Abundance And Condition Mapping In Rocky Mountain National Park,
2023
Portland State University
Willow Abundance And Condition Mapping In Rocky Mountain National Park, Eric M. Nielsen
Institute for Natural Resources Publications
Riparian and wetland willow species have undergone serious declines in Rocky Mountain National Park as a consequence of a variety of environmental changes and, most recently, damage resulting from moose overpopulation. To address concerns about the long-term status of willows in the park, we developed remote sensing-based raster maps of riparian and wetland willow species presence, canopy cover percentage, canopy height, and leaf area index. All outputs were produced at 3-meter resolution, and represent willows as they existed in 2021. The mapping was performed via random forests classification and regression models trained on several hundred vegetation plots from a variety …
Top Down Effects And Resource Selection By Coyotes In South Carolina,
2023
Clemson University
Top Down Effects And Resource Selection By Coyotes In South Carolina, Alex Jensen
All Dissertations
Top predators play important roles in functioning ecosystems, including regulating the populations of prey species and competing with other predators. However, in the face of global change, many top terrestrial predators have declined in both range and abundance, making room for some smaller predators to expand into new niches. Coyotes (Canis latrans) in North America are a prime example of this – they have rapidly expanded their range in the last 120 years, raising concerns about their impacts on both domestic and wild species. In eastern North America, research has centered around their effects on white-tailed deer ( …
Competition And Herbivory Influence The Survival, Growth, And Physiology Of Native Tree Seedlings In The Kentucky Inner Bluegrass Savanna-Woodland,
2023
University of Kentucky
Competition And Herbivory Influence The Survival, Growth, And Physiology Of Native Tree Seedlings In The Kentucky Inner Bluegrass Savanna-Woodland, James D. Shaffer
Theses and Dissertations--Biology
Terrestrial plant communities are shaped by competition for resources, herbivory, and abiotic processes. Savanna systems represent a dynamic coexistence of contrasting life forms (grasses and trees) shaped by competition and disturbance. The Kentucky Inner Bluegrass Savanna-Woodland (KIBSW) is described as an open woodland of shade intolerant species; however, climatic, and edaphic conditions can support closed-canopy forest. After European pioneer settlement (c1750-1800), over 99% of “savanna-woodlands” have been lost. KIBSW remnants are experiencing a recruitment failure, leading to a dominance shift in tree communities. I researched how tree-grass competition and mammalian herbivory influence KIBSW regeneration and maintenance. The KIBSW does not …
Dendrochronology In The Blackwater Ecological Preserve,
2023
Old Dominion University
Dendrochronology In The Blackwater Ecological Preserve, Sarah Durham, Arvind Bhuta
College of Sciences Posters
The Blackwater Ecological Preserve (BEP), located in southeastern Virginia, holds significant ecological importance as it contains the northernmost intact community of Pinus palustris, longleaf pine. At the BEP, we cored longleaf pine and recorded sample data including tree height and diameter at breast height (DBH). Two sites on the BEP, the 20’s series and 40’s series, were found to correlate within, but not between, sites. Statistical and qualitative analyses were conducted to find differences between the sites significant enough to affect correlation within a chronology. This data is being incorporated into a larger dendrochronology and climate analysis study on …
Response Of Running Buffalo Clover (Trifolium Stoloniferum Muhl Ex. A. Eaton) To Herbaceous Competition And Transplanting In Monongahela National Forest,
2023
West Virginia University
Response Of Running Buffalo Clover (Trifolium Stoloniferum Muhl Ex. A. Eaton) To Herbaceous Competition And Transplanting In Monongahela National Forest, Ruben E. Sabella
Graduate Theses, Dissertations, and Problem Reports
Running buffalo clover (RBC) is a rare perennial plant that grows throughout the American Midwest and the Appalachian Mountains. It requires disturbed forests to establish and proliferate. It has been suggested that, in the past, these conditions were created by buffalo; now logging operations maintain RBC populations. However, forest managers have been looking for ways to create suitable habitat for RBC that do not involve harvesting practices. This could help create new populations in areas that cannot be logged. Once established, competing vegetation might influence RBC abundance and flowering. This study seeks to quantify this influence by measuring the vegetation …
Knobcone Pine Response To Shading From Competing Chaparral Shrubs Following Stand-Replacing Wildfire,
2023
Humboldt State University
Knobcone Pine Response To Shading From Competing Chaparral Shrubs Following Stand-Replacing Wildfire, Sean T. Lindley
Cal Poly Humboldt theses and projects
In northern California, fire regimes are shifting towards more frequent and larger severe wildfire. There is growing concern that this shift poses a threat to biodiversity in the form of cover type change at the landscape scale, resulting in the extirpation of some species in favor of +AD617:AD649well-adapted ones. In northern California, mature serotinous conifers, such as knobcone pine (Pinus attenuata), and resprouting shrub species easily regenerate in severe patches of any size. There is no general consensus regarding the effects of shrub competition on conifer recruitment; conifer response varies with shade tolerance and other abiotic factors. Knobcone …
The Long-Term Effects Of Wildfire Severity On Oak-Pine Communities And Their Microclimates,
2023
University of Kentucky
The Long-Term Effects Of Wildfire Severity On Oak-Pine Communities And Their Microclimates, Scott Glenn Culbert
Theses and Dissertations--Forestry and Natural Resources
In the eastern U.S., fire-dependent tree species have historically dominated upland forest communities, but are now experiencing widespread regeneration challenges as a result of 20th century fire suppression policies, and are being replaced by mesophytic species. Wildfires that contain areas of high burn severity may provide an important means of mitigating these challenges and facilitating fire-dependent species regeneration and recruitment into larger size classes. One mechanism by which high-severity fire can accomplish this is by modifying understory microclimate characteristics to be more conducive to these species’ growth. A wildfire within the Daniel Boone National Forest, Kentucky, USA, provided the …
Modeling Growth And Stress Factors For Converted Silvopasture Systems In The Missouri Ozarks,
2023
Missouri State University
Modeling Growth And Stress Factors For Converted Silvopasture Systems In The Missouri Ozarks, Bailee N. Suedmeyer
MSU Graduate Theses
Silvopasture systems are becoming increasingly popular among sustainable agriculture ranchers, due to the increase in knowledge of benefits to the cattle and ability to grow cool season grasses beneath the canopy. This project focuses on the forest crop aspect of silvopasture systems from monitoring of the health of the trees over time to recommendations for thinning management to keep it functioning as viable silvopasture. The study site consists of five acres of upland hardwood forest area in Southern Missouri with 18 monumented fixed area plots. Arial and ground data was collected at each plot throughout the growing season, along with …
Patterns, Mechanisms, And Characterization Of Carbon Cycling Stability Following Partial Forest Disturbance,
2023
Virginia Commonwealth University
Patterns, Mechanisms, And Characterization Of Carbon Cycling Stability Following Partial Forest Disturbance, Kayla C. Mathes
Theses and Dissertations
Among the most essential questions in the era of climate change is how the forest carbon (C) cycle will respond to an increase in the extent of biotic disturbances from insects and pathogens. While research has focused on stand-replacing disturbance regimes, less is known about C cycling stability following partial disturbances that produce gradients of disturbance severity. Belowground C cycling responses to disturbance are especially poorly understood, even though temperate forest soils contain up to 50% of total ecosystem C and soil respiration (Rs) accounts for more than half of temperate forest C loss. Interpreting trends and mechanisms …
Quantitative Silviculture Of Northern Conifers,
2022
University of Maine
Quantitative Silviculture Of Northern Conifers, David G. Ray
Electronic Theses and Dissertations
Quantitative tools used to guide the management of important northern conifer species require updating and refinement to address changes in the contemporary resource and evolving objectives of ownership. This work builds on an extensive body of knowledge about stand density management and innovates some new approaches. In sum, the three chapters presented herein: 1) seek to strengthen and more fully articulate arguments for adopting relative density as a primary metric of stand density assessment, 2) quantify minimum stand densities to achieve full site occupancy and argue for more parity with treatment of maximum stand density, and 3) present an empirically …
Callery Pear Allelopathy Study,
2022
University of Dayton
Callery Pear Allelopathy Study, Michaela J. Woods, Jonathan T. Bauer, Dena Schaeffer, Ryan W. Mcewan
Five Rivers MetroParks Collaboration Data Archive
No abstract provided.
Wetlands In Our Backyard: A Review Of Wetland Types In Virginia State Parks,
2022
Longwood University
Wetlands In Our Backyard: A Review Of Wetland Types In Virginia State Parks, Kirsten Bauer, Benjamin K. Campbell
Virginia Journal of Science
Wetlands constitute a significant component of Virginia’s natural resources and heritage. Though historically they have been discounted—and often denigrated—the exceptional value of wetlands is currently growing in recognition and appreciation. In addition to the value provided by extracted resources and ecological regulation, wetlands also offer people the opportunity to enrich themselves through cultural, educational, and recreational pursuits. The state parks of Virginia provide access to a variety of ecosystems, including a wide array of wetland types. In this review, we document the diversity of wetlands in Virginia State Parks through a typology that groups wetland systems into the three principal …
Afforestation And Biodiversity: Bryophyte Richness Changes Between Icelandic Forest Types,
2022
SIT Study Abroad
Afforestation And Biodiversity: Bryophyte Richness Changes Between Icelandic Forest Types, Kian Mcdonough
Independent Study Project (ISP) Collection
Forest-dwelling bryophytes (mosses, liverworts, hornworts) greatly contribute to biodiversity and ecosystem function but are largely under-studied in comparison to vascular plants. With Iceland’s large-scale afforestation efforts there is a need to understand how different afforestation species are affecting biodiversity, including bryophyte diversity. This study looked at differences in ground-floor bryophyte richness across Sitka spruce, lodgepole pine, and downy birch forests and found that bryophyte richness was highest in the Sitka spruce forests and lowest in downy birch forests. While this suggests a negative correlation between bryophyte richness and light availability, since the conifer species have the densest copy cover, other …
The Role Of Frugivorous Birds As Seed Dispersers: Feeding Selection And Preference Of Madagascar’S Avian Frugivores In Analamazaotra Forest,
2022
SIT Study Abroad
The Role Of Frugivorous Birds As Seed Dispersers: Feeding Selection And Preference Of Madagascar’S Avian Frugivores In Analamazaotra Forest, Thaddeus Bashaw
Independent Study Project (ISP) Collection
Madagascar is a country rich in floral and faunal diversity. However, anthropogenic habitat destruction and climate change increasingly threaten its biodiversity. Endozoochorous plants that dependent on frugivory for seed dispersal are under threat due to increasing rates of localized extinctions of frugivorous lemurs, the primary seed dispersers of the island. While lemurs are the islands most abundant frugivores, other frugivorous vertebrates like birds and bats likely play a significant role in seed dispersal, although this role is still poorly understood. This study, conducted in Analamazaotra forest, compares the rates of visitation and consumption of six endemic fruiting tree species by …
Observational Study Of Woolly Monkey Behavior And Vocalizations: Behavioral Time Allotment And Vocalization Habits Of A Small Population Of Poeppig’S Woolly Monkey (Lagothrix Lagotricha Poeppigii) In The Ecuadorian Amazon, Marina Smith-Hanke
Independent Study Project (ISP) Collection
Poeppig’s woolly monkey (Lagothrix lagotricha poeppigii), a species of primate native to the Amazonian regions of western Brazil, eastern Ecuador, and northeastern Peru, is classified as endangered by the IUCN. These large, frugivorous primates are threatened by habitat loss and climate change as a result of human interference. Deforestation, hunting, petroleum mining, and illegal trafficking are all huge threats to this species. As a result of these pressures, their populations have decreased by at least 30% over the past three generations. However, as keystone seed dispersers, they are essential for Amazonian ecosystem health; without their seed dispersal services, a loss …
The Specific Richness Of Forest Cockroach Communities In The Region Of Aflou (Laghouat; Algeria),
2022
Department of Natural Sciences, ENS Taleb Ebderrahman, Laghouat, Algeria
The Specific Richness Of Forest Cockroach Communities In The Region Of Aflou (Laghouat; Algeria), Fatiha Masna, Siham Bounadji, Saliha Benhissen, Zakaria Hedjouli, Abdelmadjid Yagoub Asloum, Sarra Habbachi, Waffa Habbachi
Journal of Bioresource Management
Forest cockroaches are among the insects that play an important and effective role in forest formations, they are insects with incomplete metamorphosis belonging to the order of Blattodea. This work is a contribution to the knowledge of Blattoptera species existing in the forest environments of Aflou’s region (Laghouat; Algeria).The inventory was carried out monthly in the El-Khnegue Forest (Aflou) from February 2019 to May 2019. It revealed the presence of six species of forest Cockroaches, which belongs to 4 genera of the Blattelidae family. After identification, it was demonstrated that, these species were: Dziriblatta nigriventris (Chopard, 1936), Dziriblatta stenoptera (Chopard, …
The Effects Of Drought And Shade On Bottomland Hardwood Regeneration,
2022
Louisiana State University and Agricultural and Mechanical College
The Effects Of Drought And Shade On Bottomland Hardwood Regeneration, Charles Joseph Pell
LSU Doctoral Dissertations
Floodplain forests support a high diversity of tree species adapted to regenerate under fluctuating water and light availability. Regeneration regulates species composition, and shade and flood tolerance influence the likelihood of regeneration. Regeneration failure of shade-intolerant and flood-tolerant tree species commonly occurs in southcentral and southeastern floodplain forests of the United States, also known as bottomland hardwoods (BLHs). In many BLHs reduced flooding has resulted in a dryer floodplain. These changes in flooding are linked to recent shifts in species composition. The mechanisms controlling regeneration in BLHs and these composition shifts are poorly understood. In a controlled germination experiment, I …
Flora Of Doe Mountain Recreation Area, Johnson County, Tennessee,
2022
East Tennessee State University
Flora Of Doe Mountain Recreation Area, Johnson County, Tennessee, Benjamin Mccullough
Electronic Theses and Dissertations
A botanical inventory of Doe Mountain Recreation Area (DMRA) in northeastern Tennessee was conducted to help guide conservation-based management. A total of 484 species were found in DMRA, comprising 94 families, and 285 genera, 10 species listed in the state rare plant list, and 76 exotic species. Two species, Liatris virgata and Lycopodiella inundata, were new state records. Water in the Lycopodiella seep was an order of magnitude more acid than at other sites. An analysis of the wildland-urban interface showed that only 13% of the area was classified as uninhabited. The inventory-invasion index, introduced to quantify the relative …
Evaluating The Functional Traits Of The Pioneering Species: Insights To Forest Restoration,
2022
Central Mindanao University, Sayre Hwy, Maramag, Bukidnon, Philippines
Evaluating The Functional Traits Of The Pioneering Species: Insights To Forest Restoration, Rovana Mansul Jawani, Nomar Ali Ramoncito, Gretchen Quimson
Journal of Environmental Science and Sustainable Development
The influence of plant traits on interspecific demographic rates to growth and mortality has recently received an increasing attention because it allows understanding of the underlying determinants of species success especially in open degraded areas. This study examined the trait-based approach in selecting potential species for forest restoration. Five (5) native/indigenous pioneer species were evaluated for functional traits such as plant height, branching architecture, leaf dry matter content, specific leaf area, stem density, and bark thickness. All samples were collected from healthy and well grown mature trees growing in secondary forest of Central Mindanao University. The range of values for …
