Tom and Bruce Shinn Fund
Shinn Fund Recipients
Table of Contents
Ben Brewer is investigating the beautiful Gray’s Lily (Lilium grayi), found in the Southern Appalachians of North Carolina and neighboring states. Gray’s Lily is susceptible to Lily Leaf Spot, and Ben will use extensive field surveys, especially of the large population at Tater Hill Plant Preserve, to monitor fungal disease and collect flower and fruit number. Gray’s Lily also faces genetic degradation through hybridization with the more common Canada Lily (L. canadense). Using molecular markers and over 300 individual plants, Ben will determine the population structure of Gray’s Lily and the extent to which hybridization threatens the survival of the species.
Ben Brewer, Appalachian State University
Demographic monitoring and investigation of hybridization in Lilium grayi. Advisor: Dr. Matt Estep
David Camp’s research focus is on Ramps (Allium tricoccum). These delicate greens have a long cultural history in the Southeast, and the culinary world has taken notice. Concerns of overharvesting prompted David to document the genetic diversity found in Ramps populations in the Great Smoky National Park. Establishing baseline data before a species becomes imperiled strengthens future monitoring and conservation practices, which is what David hopes to accomplish.
David Camp, Appalachian State University
Conservation Genetics of Ramps (Allium tricoccum). Advisor: Dr. Matt Estep
Tulip Poplar (Liriodendron tulipifera) is a familiar member of plant communities throughout the Southeast. Noticing that the aggressively invasive Princess Tree (Paulownia tomentosa) is ecologically similar to Tulip Poplar, Hannah Dinkins decided to study the potential of the Princess Tree to replace it in Southern Appalachians forest communities. To do this, she will use seedlings in burned and unburned research plots across natural light gradients. After the first year, she will measure multiple parameters, such as water use, photosynthetic rates, and biomass, to compare the two species.
Hannah Dinkins, Western Carolina University
Photosynthesis, water use, and biomass allocation of Princess Tree (Paulownia tomentosa) and Tulip Poplar (Liriodendron tulipifera) first year seedlings across a light gradient and with or without prescribed fire. Advisor: Dr. Beverly Collins
Carson Ellis is interested in the pollination of plant communities on remote high-elevation outcrops in the Southern Appalachians. These resource limited and isolated habitats, sparsely distributed and exposed to harsh weather conditions, present challenges to pollinators and researchers alike. Carson will monitor these plant communities over time, collecting data related to pollination in order to assemble a floral visitation network. To strengthen the network connections, he will also analyze the pollen grains of captured pollinators. Understanding pollinator and plant assemblages of these rare outcrops, which often harbor endemic and imperiled plants, will be critical information in protecting these fragile habitats.
Carson Ellis, Western Carolina University
Seasonal dynamics of floral visitation networks on high-elevation rock outcrops. Advisor: Dr. Beverly Collins
Shining Clubmoss (Huperzia lucidula) is found in moist coniferous and mixed hardwood forests throughout North Carolina and may arbor a compound useful in the treatment of Alzheimer’s disease. Secondary metabolites have already been isolated from its Asian relative, Toothed Clubmoss, and are being used medicinally, leading to a decline in natural populations. Currently, neither clubmoss can be propagated in nurseries. Before interest in Shining Clubmoss here in North Carolina leads to overharvesting, Vanessa Gremler is keen to discover whether or not it harbors endophytic fungi that produce the medically relevant secondary metabolites. She is also interested in isolating the symbiotic endophytic fungi that live with Shining Clubmoss, as knowledge may allow others to propagate it in nursery settings.
Vanessa Gremler, Appalachian State University
Analysis of AChE Inhibitors in Huperzia lucidula endophytes. Advisor: Dr. Annkatrin Rose
The Venus Flytrap (Dionaea muscipula) is one of the most charismatic plant species in the South, yet there has been only limited work on its pollination ecology, critical information in protecting the species. Laura Hamon is continuing her fieldwork she began in 2018 to document the various species that visit Venus Flytraps and empirically show which is the most efficient pollinator of the species. She will also focus on seed set and assess the effects of supplemental prey (ie feeding them crickets) and/or pollen on seed numbers.
Laura Hamon, North Carolina State University
Pollination ecology of Venus flytrap (Dionaea muscipula). Advisor: Dr. Rebecca Irwin
Peter Kann studies the relationship between well-known pitcher plants (Sarracenia) and the flies (Fletcherimyia) that use them as host plants. These flies feed on the pitcher plant’s captured prey, not on plant tissue. Peter will determine which species of Fletcherimyia are associated with two rare, endangered pitcher plants, S. jonesii and S. oreophila.
Peter Kann, East Carolina University
One flew over the pitcher plant: updating ecological associations between pitcher plant flies and their carnivorous hosts. Advisor: Dr. Trip Lamb
Ryan O’Connell is studying factors that could negatively impact populations of the imperiled Mountain Golden Heather (Hudsonia montana), which is found in only a few locations in the North Carolina mountains. Because plants often experience more than one environmental stressor at a time, Ryan will examine both soil moisture levels and invasive species abundance simultaneously and separately in monitored plots. He will then measure survival, growth, and seed set of the Mountain Golden Heather and use the collected data to model predicted population changes.
Ryan O’Connell, Duke University
Effects of co-occurring anthropogenic stressors on Hudsonia montana, a critically imperiled North Carolina endemic. Advisor: Dr. William Morris
Bubba Pfeffer plans to study the often overlooked but highly diverse lichen community. His study site is Bluff Mountain, an area known to harbor several rare plant communities, where he will sample lichens in all forest types and on rock outcrops. Because lichens are composite organisms composed of one or multiple species of fungi and algae or cyanobacteria, Bubba will not simply catalogue the species but also document a more functional aspect of the intricate interactions and assemblages that compose the different lichen communities.
Bubba Pfeffer, Appalachian State University
Bluff Mountain lichen community descriptions. Advisor: Dr. Mike Madritch
Lysimachia asperulifolia (Rough-leaved Yellow Loose-strife), found only in the coastal plain of North and South Carolina, is an endangered species. Jessica Roach’s research will focus on documenting the genetic diversity within nine known populations. The rhizomatous species appears to reproduce sexually at a low rate, so it is vital to understand how clonal the remaining populations are. Her data will contribute to the management and protection of the species.
Jessica Roach, University of North Carolina at Wilmington
A comprehensive population genetics study of Lysimachia asperulifolia (Rough-leaved Yellow Loose-strife) throughout its natural range. Advisor: Dr. Darin Penneys
Anita Simha will study climate change impacts on native and non-native grasses. Her research will explore how shifts in the timing of germination and flowering could favor one species over the other. Using an abandoned field, she will simulate early germination of three grassland species in different combinations and document how the competitive dominance of the grasses changes depending on which species germinates first. Because our warming planet can have unforeseen effects on the make-up of plant communities, studies such as Anita’s will be valuable information for future conservation efforts. Anita will also use her research field site as an educational tool for one-day STEM summer camps for Durham Public School students.
Anita Simha, Duke University
Impact of seasonal shifts and resource availability on competitive dominance of an exotic grass in a Piedmont grassland. Advisor: Dr. Justin Wright
Cliff systems can harbor unique, diverse plant communities, such as glacial relicts and endangered biota, and are dominated by stress-tolerant, often cryptic lichens, bryophytes, and vascular plants. Rock climbing is a major source of human disturbance to cliff ecosystems, but this effect is highly variable due to the unevenness of the rock surface. Preferred rock climbing routes could overlap with specific vegetation communities with detrimental impacts. Georgia Harrison quantified these impacts by conducting vegetation surveys of climbed and unclimbed cliff faces in the Linville Gorge Wilderness Area. She also created detailed fine mapping of cliff face topography, which she used to show how rock climbing routes could be disrupting ecological succession in lichen communities.
Georgia Harrison, Appalachian State University
Impact of rock-climbing disturbance and microhabitat characteristics on cliff face vegetation communities of the Linville Gorge Wilderness Area. Advisor: Dr. Michael Madritch
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Invasive species are a threat to biodiversity and can be very difficult to control. Sometimes using herbicidal sprays are the only practical solution, although with negative consequences to the native flora. And while we are busy plotting above ground how to rid these aggressive exotics from our gardens and natural areas, below ground some invasives are busy changing the soil environment to their benefit. Matthew Hodges studied both of these issues using the invasive Chinese Lespedeza (Lespedeza cuneata) and three native species. Lespedeza formed more root nodules and grew to a larger size in soils previously occupied by Lespedeza, as opposed to soils not previously used by Lespedeza, indicating that the plant does alter the soil property in its favor. Matthew also found the native seedbank was less diverse and bountiful in sprayed soils, signaling that restoration efforts could be more successful by augmenting an area with native flora rather than simply relying on the seedbank. From his work, he also identified possible contenders for use in restoration post-removal of Lespedeza, such as Solidago altissima.
Matthew Hodges, East Carolina University
Investigating the role of soil legacy effects and community engagement in the management of Lespedeza cuneata, an invasive legume. Advisor: Carol Goodwillie
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The Boone Fork headwaters on the northeastern slope of Calloway Peak represent an area of high natural quality significance, yet there was little plant species or natural community data. The region is characterized by rugged terrain with few trails for access. Undaunted by the remoteness of the area, Ethan Hughes investigated the flora of this region. He documented 262 vascular plant species, 19 epipetric mosses, and 18 distinct natural communities. Twenty-four vascular plant species found during field surveys were categorized as state-listed or federally listed, and three identifications represent new county records. In addition to hiking the region conducting surveys, Ethan also spent time researching the botanists who came before him. Using literature and herbarium database searches and personal communications, Ethan highlighted four scientists who played a role shaping the botanical knowledge of the region: Asa Gray, Rev. Moses Ashley Curtis, John K. Small and Amos A. Heller.
Ethan Hughes, Appalachian State University
The flora of the Boone Fork headwaters within Grandfather Mountain State Park. Advisor: Zack Murrell
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Effects of elevated temperatures and eutrophication on plant-herbivore interactions and impacts on a salt marsh foundation species. Advisor: Justin Wright
Michael Kunz, UNC- Chapel Hill
Population ecology of Astragalus michauxii, a rare southeastern US endemic species. Advisor: Alan Weakley
Greg Wilson, North Carolina State University
Pollination ecology and local adaptation of Echinacea laevigata (Asteraceae) in woodland and open microhabitats at Picture Creek Diabase Barrens. Advisor: Alexander Krings
Taxonomy, population genetics, and status assessment of Nuphar sagittifolia (Nymphaeaceae) Advisor: Dr. Alexander Krings
Laura Hamon, North Carolina State University
Pollination ecology of Venus Flytrap (Dionaea muscipula). Advisor: Dr. Rebecca Irwin
Bryan Piatkowski, Duke University
Systematics, molecular evolution, and functional trait variation in the Sphagnum magellanicum (Sphagnaceae) species complex. Advisor: Dr. Jon Shaw
Ellen Quinlan, Western Carolina University
Phylogenetic history and variation in water-use efficiency of mountain and coastal populations of Kalmia buxifolia. Advisor: Dr. Katherine Mathews
Marietta Shattelroe, Appalachian State University
Genetic diversity of Geum geniculatum.Advisor: Dr. Matt C. Estep
Alexandria Szakacs, North Carolina State University
Reconstructing the vegetation history of a Piedmont prairie remnant using soil phytoliths. Advisor: Dr. Alexander Krings
Solidago spithamaea: Study in population viability. Advisor: Dr. Gary B. Blank
Rachel Kelsy Stillwell, Western Carolina University
Microsatellite marker optimization and gene flow analysis between species of the erectum complex of Trillium. Advisor: Dr. Katherine Mathews
Germination ecology of two southern Appalachian natives, Houstonia caerulea and H. serpyllifolia (Rubiaceae). Advisor: Dr. Kathleen Donohue
Rebecca M. Dalton, Duke University
Changes to flowering phenology in native wildflower communities in North Carolina. Advisor: Dr. William Morris
Gary Perlmutter, North Carolina State University
Traffic emissions effects on forest lichen communities in North Carolina. Advisor: Dr. Gary Blank
The reproductive ecology of the federally endangered Cooley’s Meadowrue (Thalictrum cooleyi Ahles). Advisor: Dr. Claudia Jolls
Kipp Callahan, North Carolina State University
The vascular flora of Pondberry Bay (Sampson County, NC). Advisor: Dr. Alexander Krings
Nathan Howell, North Carolina State University
The vascular flora of the natural lake shoreline community of Carolina bays in the Carolina flatwoods and Mid-Atlantic floodplains and low terraces ecoregions (Bladen and Columbus Counties, North Carolina). Advisor: Dr. Alexander Krings
The Vascular Flora and Soils of Buxton Woods (Dare County, NC). Advisor: Dr. Alexander Krings
Kyle Palmquist, University of North Carolina at Chapel Hill
The joint effects of drought and reduced fire frequency on native orchids in the Green Swamp Preserve, North Carolina. Advisor: Dr. Alan Weakley