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Articles 1 - 11 of 11
Full-Text Articles in Physical Sciences and Mathematics
Geographic Distribution And History Of Plant Specimens At Longwood University Harvill-Stevens Herbarium, Ross Bechtle
Geographic Distribution And History Of Plant Specimens At Longwood University Harvill-Stevens Herbarium, Ross Bechtle
Fall Showcase for Research and Creative Inquiry
Herbaria are plant museums comprising collections of dried mounted plant specimens crucial for education, research, and conservation purposes. They provide a permanent record of plant diversity found in a particular area over time. An understanding of geographic coverage and history of collection of specimens in a herbarium is important for future planning and growth of a herbarium. The purpose of this study was to understand the county-level distribution and chronology of collection of plant specimens housed in Harvill-Stevens Herbarium at Longwood. Harvill-Stevens Herbarium is the largest collection of Virginia native plants the second largest herbarium in the state consisting of …
Effect Of Lancer Park Detention Pond On Stormwater Sediment Concentrations, Rian Blakesley, Randolph Zerick, Jason Seagraves, Joseph Kohler
Effect Of Lancer Park Detention Pond On Stormwater Sediment Concentrations, Rian Blakesley, Randolph Zerick, Jason Seagraves, Joseph Kohler
Spring Showcase for Research and Creative Inquiry
During rain events, stormwater collects sediments and other pollutants during runoff and transports them to receiving water bodies. Detention ponds can reduce pollutant concentrations in stormwater by allowing particulate matter to settle out of the water column. The objective of this study was to determine the effectiveness of Longwood University's Lancer Park stormwater detention pond in reducing sediment concentrations. This was accomplished by quantifying the difference between sediment concentrations of stormwater entering and leaving the pond. Inflow and outflow samples were collected from the pond for 3 separate rain events and the samples were filtered, dried, and weighed. The change …
The Effect Of Urbanization On Water Quality, Mary Hays Scott, Paul Caspar, Danielle Clarke-Bradley
The Effect Of Urbanization On Water Quality, Mary Hays Scott, Paul Caspar, Danielle Clarke-Bradley
Spring Showcase for Research and Creative Inquiry
The past several decades have seen the proliferation of urban areas around the world (Uitto, 1999). Land-cover change, correlated with different forms of land use, is documented to have significant impact on earth's hydrologic systems (Aichele, 2005). Significant studies point to urbanization as being a key source of pollutants in earth's watersheds and natural hydrologic landscapes(Li et al. 2016; Aichele 2005). This study aims to measure the effect of urbanization on the water quality of Gross Creek. Concentrations of E.coli, phosphorus, nitrogen, and suspended sediments were measured from four sampling sites along Gross Creek in Farmville, Virginia. This process was …
The Abundance Of Soil Microbes In Relationship To Proximity To The Urban Area Of Lancer Park In Farmville, Virginia, Christian Michael, Callie Cutrell, Miguel Diaz-Montealegre
The Abundance Of Soil Microbes In Relationship To Proximity To The Urban Area Of Lancer Park In Farmville, Virginia, Christian Michael, Callie Cutrell, Miguel Diaz-Montealegre
Spring Showcase for Research and Creative Inquiry
Soil microbes are microorganisms found in soil that serve various critical roles and functions in the environment, such as decomposition and the cycling of nutrients in ecosystems. Natural and human-caused factors can have positive and/or negative impacts on soil microbes. The objective of this study is to examine the abundance of soil microbes in relationship to proximity to the urban area of Lancer Park in Farmville, Virginia. Soil samples were taken from four locations within Lancer Park: the upper and lower floodplain of Buffalo Creek, the bottom of a large stormwater detention pond, and adjacent to an ephemeral channel connecting …
Combined Effects Of Allelochemical And Pesticide Treatment On The Growth Of Cucumber Plants, Samue Morgan
Combined Effects Of Allelochemical And Pesticide Treatment On The Growth Of Cucumber Plants, Samue Morgan
Spring Showcase for Research and Creative Inquiry
Allelochemicals are biochemicals produced by one plant that inhibits the success of other plants in its vicinity. These allelochemicals are sometimes produced naturally or as a result of stimulus or stress. Ferulic acid is a widespread allelochemical found in cucumbers (Cucumis sativus). Artificial inhibitory chemicals such as the pesticide zeta cypermethrin may create new interactions with ferulic acid. We found that cucumbers acclimate to ferulic acid over time while the inhibitory effects of pesticide remained relatively constant over 14 days.
Which Weather And Water Conditions Affect The Biodiversity And Abundance Of Macroinvertebrates The Most?, Alyssa Oppedisano, Phil Anderson, Val Phillips
Which Weather And Water Conditions Affect The Biodiversity And Abundance Of Macroinvertebrates The Most?, Alyssa Oppedisano, Phil Anderson, Val Phillips
Spring Showcase for Research and Creative Inquiry
Macroinvertebrates are important biological monitors that play a valuable role in the metabolism of freshwater food chains. Previous studies have suggested that conditions such as dissolved oxygen, pH, water temperature, precipitation, and air temperature can affect the abundance of macroinvertebrates which can in turn affect the health of freshwater ecosystems. This research aimed to find the relationship between macroinvertebrate biodiversity and various environmental conditions in freshwater ecosystems. Weather data was taken from a weather station at Lancer Park and water data was taken on-site at Wilson stream, both locations in Farmville, Virginia. Sample collection and identification occurred twice a week …
Microplastics In Urban Stormwater Ponds, Maryelizabeth Crabbs, James Giering
Microplastics In Urban Stormwater Ponds, Maryelizabeth Crabbs, James Giering
Spring Showcase for Research and Creative Inquiry
Microplastics are pieces of plastic that have been broken down into extremely small particles. If introduced into the aquatic environment microplastics can impose adverse effects on aquatic wildlife, especially if they are ingested. The purpose of this study is to analyze the concentrations of microplastics in the waters of local stormwater ponds and compare them to a natural pond. Three ponds in the Farmville area were tested: two stormwater ponds on Longwood University's campus and one natural pond with limited human influence at an off campus location. Water samples were taken weekly over a five week period and then analyzed …
Effect Of Lancer Park Detention Pond On Stormwater Sediment Concentrationsâ , Randolph Zerick, Rian Blakesley, Jason Seagraves, Joey Kohler
Effect Of Lancer Park Detention Pond On Stormwater Sediment Concentrationsâ , Randolph Zerick, Rian Blakesley, Jason Seagraves, Joey Kohler
Spring Showcase for Research and Creative Inquiry
During rain events, stormwater collects sediments and other pollutants during runoff and transports them to receiving water bodies. Detention ponds can reduce pollutant concentrations in stormwater by allowing particulate matter to settle out of the water column. The objective of this study was to determine the effectiveness of Longwood University's Lancer Park stormwater detention pond in reducing sediment concentrations. This was accomplished by quantifying the difference between sediment concentrations of stormwater entering and leaving the pond. Inflow and outflow samples were collected from the pond for 3 separate rain events and the samples were filtered, dried, and weighed. The change …
Population Dynamics Of Waterfowl Wintering In The Mid-Atlantic Region, Usa, Abigail Harris, Thomas Hoke
Population Dynamics Of Waterfowl Wintering In The Mid-Atlantic Region, Usa, Abigail Harris, Thomas Hoke
Fall Showcase for Research and Creative Inquiry
A recent study (Rosenberg et al. 2019) has shown that bird populations in North America are experiencing major declines except for a few groups including waterfowl. However, this study focused only on the summer breeding populations and did not focus on regional dynamics. We utilized data from 62 Christmas Bird Count (CBC) count circles to evaluate population dynamics of common wintering waterfowl in the coastal Mid-Atlantic region (Delaware=7, Maryland=16, Virginia=18, North Carolina=21) since 1950. We found a 36% decline of wintering waterfowl relative abundance compared to 1950s. American wigeon and Canada goose had major population decreases while Snow goose had …
Making Artificial Cips Data With A Generative Adversarial Neural Network, Austin Hedges
Making Artificial Cips Data With A Generative Adversarial Neural Network, Austin Hedges
Fall Showcase for Research and Creative Inquiry
Polar mesospheric clouds (PMCs) have been studied for thirteen years by NASA's Aeronomy of Ice in the Mesosphere (AIM) satellite. The Cloud Imaging and Particle Size (CIPS) instrument onboard AIM has taken many images of PMCs over this time. Such a large number of images makes CIPS data ideal for training neural networks which require large datasets. CIPS images were used to train a Generative Adversarial Network (GAN) to train towards being able to generate purely artificial CIPS-like images.
Factors Contributing To The Decline Of Bees, Coleman Behne
Factors Contributing To The Decline Of Bees, Coleman Behne
Fall Showcase for Research and Creative Inquiry
Pesticides and parasites are the main causes for the decline in honey bees. This presentation focuses on four of the main factors contributing to bee decline and the stakeholders involved as well as potential solutions.