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
Environmental Values Represented in Successful Green Building; LEED vs. Passive House
Mon, 04/28/2014 - 12:02
Abstract: In a society struggling to synchronize human development with environmental quality, the construction sector is often the target of sustainability initiatives. The purpose of this research is to investigate the environmental values and themes that influenced the design process of two successful green building projects. The two buildings at the focus of the study are new residential construction in the state of Maine; one with LEED Platinum certification and one with Passive House certification. Both buildings were found to exemplify themes of energy performance, practicality, and bioregionalism and included a collaborative design effort. A better understanding of these themes and values that guided these project teams to construct paradigm-shifting structures can help form a model for mainstream applications of a sustainable built environment.
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Major: Environmental Studies
File Attachments: The Author has selected not to publish this complete work.