Showing 1 - 10 of 5709 Items
Plant-mediated interactions within the milkweed insect community
Date: 2021-01-01
Creator: Katie J. Galletta
Access: Open access
- Induced defenses following herbivore damage can modify a plant’s chemical or physical characteristics and alter the plant’s interactions with subsequent herbivores. Common milkweed (Asclepias syriaca) provides an excellent system with which to study plant response-mediated interactions given its small but highly specialized herbivorous insect community and its ability to increase toxic cardenolide concentrations and latex production throughout its tissues upon attack. I conducted observational field surveys quantifying leaf damage to examine whether the indirect plant-mediated interactions amongst the milkweed herbivore community as demonstrated in other studies also occur in situ, as well as how foliar herbivory impacts insect flower visitation on A. syriaca. I found that four-eyed milkweed beetle (Tetraopes tetrophthalmus) damage had a negative effect on subsequent monarch (Danaus plexippus) larvae and swamp milkweed leaf beetle (Labidomera clivicollis) damage. I also found that monarchs laid more eggs on milkweed with no herbivore damage. Additionally, I observed a negative relationship between A. syriaca foliar herbivory and flower visitation, which has not been previously demonstrated but illustrates the various potential costs of herbivory to plant fitness. My work’s focus on observing the effects of natural herbivore damage offers insight as to how plant-mediated interactions operate among the milkweed insect community in situ. Furthermore, this study demonstrates how plant responses to herbivory in general can modulate ecological relationships between species that do not directly interact with each other.
Indigenous Rights in International Law: A Focus on Extraction in the Arctic
Date: 2021-01-01
Creator: Aine Healey Lawlor
Access: Open access
- This paper seeks to evaluate the evolution and future of Indigenous rights in extractive industry on a global scale and uses the Arctic both to explore the complexity of these rights and to provide paths forward in advancing Indigenous self-determination. Indigenous rights lack a strong international foundation and are often dependent upon local and domestic regimes, yet this reality is currently shifting. The state of extraction internationally, particularly in the Arctic, is also facing major uncertainty in the coming decades as demand continues to rise. Indigenous rights and the rules governing extractive industry intersect because much of the world’s remaining mineral resources are on or near Indigenous territories and Indigenous communities are disproportionately impacted by the environmental degradation and socio-cultural consequences of extractive development. The Arctic is arguably the most important setting for the world’s future resource needs and is also home to many Indigenous peoples who operate in complex legal, political, and social webs. This paper argues that as a result of these dynamics, the Arctic offers opportunities to advance forms of non-traditional sovereignty and to promote recognition of Indigenous self-determination through diffusion and international norm development. This paper proposes a multi-faceted approach to further promote Indigenous rights on the international level which involves using the Arctic Council as a platform for diffusion, the US ratification of UNDRIP, the creation of standards and guidelines for transnational corporations in development projects, and investment in Indigenous communities to support Indigenous empowerment, advocacy, and voices.
"Know-Nothingism, Abolitionism, and Fanaticism:" An Analysis of the Collapse of the Second Party System in Maine
Date: 2023-01-01
Creator: Justis Dixon
Access: Open access
- The 1850s were a tumultuous period in American politics, with a complete partisan realignment fundamentally shifting the balance of power away from the status quo and toward possibilities for change. This paper focuses on the collapse of the Second Party System in Maine, and understanding how we can explain this stunning and rapid shift. The varying factors can be placed into two broad categories First, ethnocultural issues were primarily responsible for much of the growing turmoil within and between the major parties throughout the 1840s, and accelerating greatly in the early 1850s with rising levels of immigration and the increasing draw of the temperance movement, which was then followed by the passage of highly controversial legislation concerning these issues. Second, national-level issues such as the Fugitive Slave Act and detailed reports of the violence out West in local newspapers brought the consequences of the unfettered expansion of slavery closer to home for many Mainers. Scholars of this period have expressed varying opinions as to the relative importance of local and national level issues in generating a change to the political system. Using Maine as a case study due to its position as a leader in the temperance movement and its geographical distance from the battlegrounds of national politics at the time, I conduct an in-depth examination of the political history of the state and conclude that rising tensions on both local and national levels were necessary to cause such transformational change.
Photoacidic properties of 8-amino-2-naphthol in imidazolium salts Access to this record is restricted to members of the Bowdoin community. Log in here to view.
Date: 2023-01-01
Creator: Rachel E Nealon
Access: Access restricted to the Bowdoin Community
The Crossroads We Make: Intergenerational Trauma and Reparative Reading in Recent Asian American Memoirs (2018-2022)
Date: 2023-01-01
Creator: Josh-Pablo Manish Patel
Access: Open access
- This project extends reparative reading practices to recent Asian American memoirs, specifically trauma memoirs from the past five years (2018-2022) that detail personal trauma and communal, intergenerational trauma. Reparative reading is explored within five memoirs: Stephanie Foo’s What My Bones Know (2022), Esmé Weijun Wang’s The Collected Schizophrenias (2019), Phuc Tran’s Sigh, Gone (2020), Cathy Park Hong’s Minor Feelings (2020), and Nicole Chung’s All You Can Ever Know (2018). In considering the reparative turn in Asian American memoirs, this thesis draws on and extends Eve Kosofsky Sedgwick’s reparative frameworks and bell hooks’ theories on pedagogy and love. A critical analysis of self-writings through pre-existing reparative reading models alongside traditional Asian American scholarship on racial melancholia resists the monopolistic dominance of overwhelming negative affects (such as shame, guilt, and anger) that saturate Asian American lives and life-writing. Instead, this alternative interpretative practice exposes how authors seek love, pleasure, and positivity within their texts and within their own lives, while also exploring the methods through which the memoirists themselves embody the reparative in writing and self-analysis. Thus, shaping the reparative turn for Asian America illuminates the productive ways reshaped methods of writing and criticism, and its resultant ethics of living, can push back against lived racial oppression and pain as well as decades of cultural erasure and intergenerational trauma. This varied engagement with love-based and reparative frameworks allows Asian American authors to begin healing from trauma, and this is evidenced through non-traditional psychiatric healing methods, literary methods, and strategies of communal formation.
Components and Mechanisms of Total Alkalinity Variability in an Intertidal Salt Marsh Access to this record is restricted to members of the Bowdoin community. Log in here to view.
Date: 2016-05-01
Creator: Lloyd B Anderson
Access: Access restricted to the Bowdoin Community
Observation of the charmed baryon c+ and measurement of the isospin mass splittings of the c
Date: 1993-01-01
Creator: G. Crawford, C. M. Daubenmier, R. Fulton, D. Fujino, K. K., Gan, K. Honscheid, H. Kagan, R. Kass, J. Lee, R. Malchow, F. Morrow, Y. Skovpen, M. Sung, C. White, J. Whitmore, P. Wilson, F. Butler, X. Fu, G. Kalbfleisch, M. Lambrecht, W. R. Ross, P. Skubic, J. Snow, P. L. Wang, M. Wood, D. Bortoletto, D. N. Brown, J. Fast, R. L. McIlwain, T. Miao, D. H. Miller
Access: Open access
- We observe the c+ baryon decaying to Λc+π0 and measure the mass difference M(c+)-M(Λc+) to be 168.5±0.2 MeV/c2. We also measure the mass differences M(c++)-M(Λc+) and M(c0-M(Λc+) with improved precision and determine the isospin mass splittings M(c++)-M(c0) and M(c+)-M(c0) to be 1.1±0.4±0.1 MeV/c2 and 1.4±0.5±0.3 MeV/c2, respectively. Our results indicate that the light quark mass difference does not dominate the isospin mass splitting in c. © 1993 The American Physical Society.