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.
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File Attachments: Scarabaggio_A.docx
Proposal for Improvements to Alumni Campground Waterfront
Sat, 12/14/2019 - 15:42
Abstract: The Alumni Campground is full of potential. A front country campground in close proximity to many great wilderness experiences. Some of those experiences can be best reached by water and yet the Alumni Campground waterfront is not much more than a single “No Swimming” sign nailed to a tree. This lack of infrastructure has caused degradation of the shoreline as the user base for water craft does use the campground as a starting point for excursions onto the St. Regis waterways but due to a lack of durable launching sites they have created several eroded and denuded spots along the lakes bank. In order to accommodate the amount of use this asset receives and prevent further degradation this proposal is designed to give the Alumni Campground Committee a sensible set of options for structural improvements designed to suit the user bases needs and protect the valuable waterfront resources.
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Major: Parks and Conservation Management
File Attachments: ALUMNI CAMPGROUND CAPSTONE PAPER.docx
Monitoring the Zebra Mussel Invasion Front: Use of New Technology
Thu, 02/09/2012 - 15:39
Abstract: Zebra mussels are invasive mollusks that are affecting the well-being of the water bodies in the United States. This study uses environmental DNA (eDNA) is a sensitive early detection system that may be useful in monitoring their spread. The purpose of this study is to determine the effectiveness of eDNA technology in identifying infested water bodies, to determine if zebra mussel DNA is in the Adirondack water bodies not known to be infested, if the water chemistry of these water bodies is favorable for zebra mussel establishment, and if the eDNA technology is transferable to an institution like Paul Smith’s College. Eighteen lakes, all in New York State were sampled, fifteen of which are located in the Adirondack Park. DNA was extracted from water and plankton samples and species specific primers were used for PCR amplification to determine if zebra mussel DNA was present. Of seven samples taken from sites known to be infested, five of these tested positive for zebra mussel eDNA. Four lakes not known to be infested within the Park also tested positive for zebra mussel eDNA. Based on zebra mussel risk parameters (water chemistry) applied to 1,469 Adirondack water bodies, less than 3% are at risk of zebra mussel establishment. However it is possible that established populations could occur at microsites that may have locally high levels of calcium and higher pH.
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Major: Biology, Environmental Sciences, Environmental Studies, Fisheries and Wildlife Science, Forestry, Natural Resources Management and Policy
File Attachments: The Author has selected not to publish this complete work.