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Capstone Projects

Cultural eutrophication of Lower Saint Regis Lake using diatoms and organic content as indicators of eutrophication.

Tue, 04/28/2020 - 12:06
Abstract: Cultural eutrophication can greatly affect water quality, leading to algae blooms and can affect fish communities. Throughout the history of Paul Smith’s Hotel and College, development along Lower St. Regis lake has led to increases in eutrophic conditions, which has detrimental effects on water quality. In this study, a sediment core from Lower St. Regis Lake was analyzed to determine when past eutrophication events occurred. This was accomplished using species counts of diatoms from every 1.0 cm of sediment. The relative abundance of diatom species such as Tabellaria flocculosa, Asterionella formosa, and Fragilaria crotonensis were used as indicators of more eutrophic conditions. Loss on ignition (LOI) was also used to measure the organic content in the sediment at increments of 0.5 cm. The higher percent lost on ignition indicates higher productivity in the lake and more eutrophic conditions. Some samples from the sediment core were also dated using lead-210 to create a timeline that could be compared to known dates of events occurring along the lake that could have affected the trophic status of Lower St. Regis Lake. There was a sudden spike in the relative abundance of F. crotonensis and an increase in organic content at a depth of 20 cm in the core, indicating that conditions became more eutrophic. Based on the lead-210 dates, this spike in F. crotonensis and organic content occurred between 1898 and 1908, when development around the lake was increasing and Paul Smith’s Hotel added indoor plumbing with poor wastewater treatment practices.
Access: Yes
Literary Rights: Off
Major: Biology
Year: 2020
File Attachments: Capstone_0.docx
Authors: Lydia Harvey

Black Ash Seed Management: A Potential Partnership Project

Tue, 05/12/2020 - 09:06
Abstract: The Emerald Ash Borer beetle is currently decimating Black Ash populations, which is making the species increasingly difficult to find. With the Black Ash species becoming increasingly rare, some management plans have been created to protect the remaining populations of this species. The Akwesasne Mohawk Tribe has a management plan in place that is not only trying to protect the remaining Black Ash but is also harvesting their seeds and growing new trees. Partnering with the Akwesasne Mohawk Tribe to grow Black Ash Trees would be a massive step in the fight to keep this species alive. My research will analyze the challenges and possibilities associated with entering into a partnership with the Akwesasne Mohawk Tribe in a joint effort to secure the Black Ash’s future survival.
Access: Yes
Literary Rights: On
Major: Environmental Studies
Year: 2020
Authors: Joel Caruso

Financial and Marketing Research for Alumni Campground

Sat, 05/09/2020 - 11:52
Abstract: The purpose of this capstone was to look at the financial plan for the Alumni Campground and make suggestions for marketing. Through interviews, surveys, and other research on the campground, we were able to see who uses the campground and areas of improvement for the physical site and marketing. Our recommendations are to help the campground prosper in the future
Access: Yes
Literary Rights: Off
Major: Environmental Studies, Natural Resources Conservation and Management
Year: 2020
File Attachments: Capstone Essay.docx
Authors: Margret Montag, Dallas Olsen

What Are the Differences in Trichome Density and Morphology Between Arabidopsis Lyrata Subsp. Lyrata Populations When Grown in A Northern Common Garden, Outside of Their Geographic Distribution?

Tue, 04/30/2019 - 15:23
Abstract: Trichomes are diverse among plants. There is evidence suggesting that environmental factors may influence these structures and their densities. Other evidence shows that weather may influence genetics and gene expression. Arabidopsis lyrata subsp. lyrata is a wild flower that is native to North America and Europe and has been extensively studied. Literature regarding Arabidopsis states that within the family and genus, there is evidence suggesting that trichomes can be either non-branched, twice branched or thrice branched. This study’s purpose was to analyze how trichome density, and morphology in Arabidopsis lyrata subsp. lyrata differs between populations when grown outside of the natural distribution limit. Four populations of Arabidopsis lyrata subsp. lyrata were studied based on latitude. After analyzing the outcomes, unexpectedly there are no major differences between the north and south populations; however, there are differences between the four populations. Based on the data gathered, it was determined that the population, North2 (07G) must be genetically different from the other three populations. The four populations were grown together in a common garden; thus, all variables were the same. The environment did not influence trichome density or morphology within the North2 population, therefore the structures were genetically pre-determined.
Access: Yes
Literary Rights: Off
Major: Biology
Year: 2019
File Attachments: Scarabaggio_A.docx
Authors: Amber My Scarabaggio