University of Minnesota Duluth
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Browsing University of Minnesota Duluth by Type "Poster"
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Item Are Your Paleoecological Indicators Telling the Truth? (2014)(2014) Reavie, Euan; University of Minnesota Duluth. Natural Resources Research Institute; Heathcote, Adam J; American Geophysical UnionInferring condition from fossil biological assemblages assumes a strong relationship between the variable you want to infer and patterns in the assemblages. In recent years it has become apparent that several species-based indices to infer environmental conditions in paleorecords are providing meaningless results. The following are steps you can take to ensure valid reconstructions. This poster demonstrates a phosphorus inference model based on Great Lakes diatom assemblages, but these methods are easily transferred to many indicators; e.g. foraminifera/sealevel, chironomids/oxygen, diatoms/salinity, etc.Item Board in Class?...Game On! The Effectiveness of Board Games on Students' Sense of Belongingness and Knowledge in the Classroom(2025-01) Bahr, Natalie; Tornabene, LadonaThis research is important because it can establish whether playing board games can increase feelings of belongingness and academic performance. This knowledge can help instructors engage their students in the classroom. Students that engage in the classroom will be more academically motivated during class time as well as having a higher level of belongingness in and outside of the classroom. The main purpose of this study is to measure college students' sense of belongingness and comprehension of content knowledge through the use of educational board games. A nutrition themed educational board game was created to help form a space for social interactions and academic motivation. This article found slight increases within the pre-board game and post-board game belongingness surveys. As well as a slight increase in percent correct on the pre-board game and post-board game learning assessments. Upon further analysis the data was found to be not significant when comparing the pre-board game and post-board game data. More future research should be conducted to further investigate if educational board games can be implemented in classroom settings to increase sense of belongingness and comprehension of content knowledge. An experiment that can be conducted to further this research is to see if board games enhance comprehension of content across multiple subjects. The belongingness survey can then be conducted with a wider subject pool and across a longer span of time to get more data to correlate social interactions and belongingness.Item The Ecological History of Lake Erie According to Algae (2014)(2014) Allinger, Lisa E; Reavie, Euan; University of Minnesota Duluth. Natural Resources Research InstituteLake Erie is well known for its cultural perturbations with an extensive history of monitoring and paleolimnoloigcal studies, particularly those using diatoms, that present evidence of major change in the lake’s environmental quality. The lake’s biological and physical processes are strongly affected by its topography and division into three basins. Species known to be tolerant to eutrophic conditions and those common in oligotrophic to mesotrophic lakes were relatively abundant in presettlement assemblages, inferring that the lake was at least seasonally productive prior to Euro-American settlement. Overall abundance of diatoms was relatively low during presettlement, but relative abundance was high for some speciesItem The Ecological History of Lake Ontario According to Phytoplankton (2014)(2014) Allinger, Lisa E; Reavie, Euan; University of Minnesota Duluth. Natural Resources Research InstituteEcological history of Lake Ontario.Item The Economic Impact of Sustainable Practice in the Airline Industry: A Comprehensive Analysis(2024-10-21) Kroeger, Caleb; Wilmot, NeilSustainability is our society's ability to exist and develop without depleting all of the natural resources needed to live in the future. The airline industry accounts for 12% of all CO2 emissions produced per year. There is limited research addressing how certain airline companies can implement sustainable airline practices under economically profitable conditions. We investigated the implementation of sustainable airline practices including the implementation of sustainable aviation fuels, electric ground power systems, and research towards the demographics of sustainable conscious customers. For the implementation of sustainable aviation fuels, a DCF model was created to project the ten year value of investing in said fuels. A cost benefit analysis was created to explore the potential profitability of implementing electric ground support equipment. Finally we conducted market research to determine the demographics of sustainable conscious consumers, and reviewed the sustainable practice participation of the ten largest airlines. We found that within five years sustainable aviation fuels cross the threshold into profitability and continue to increase by around 10 million dollars per year. Our cost benefit analysis showed an upfront implementation cost of 55 million dollars, with a decreasing cost in further years to under 10 million dollars per year. Market research showed that out of the 10 airliners, the largest contributors to sustainability were Delta Air Lines, FEDEX Freight, and SAS Airlines. Looking at the demographics of sustainable conscious consumers, our research found that the majority of consumers included females over the age of 40 years old with a household income of 40,000-60,000. These findings create an economic view on how airliners could potentially implement sustainable practices into their everyday functions. Further research is needed to determine how these practices will affect the short and long term functioning of airliners.Item UMD Sustainability By the Numbers 2017-2018(2018) University of Minnesota Duluth. Office of SustainabilityItem Zippel Bay: Paleolimnology Case Study (2006)(2006) Reavie, Euan; University of Minnesota Duluth. Natural Resources Research InstituteA long-term reconstruction of water quality in Zippel Bay, Lake of the Woods, Minnesota.