Human communication

Students Present Research on Mysterious Band of Rocks, Green Crab Fertilizer, and More

Timing and Extent of Holocene Glaciation in the Northeast Brooks Range, Alaska: Cameron MacKenzie ’22

MacKenzie “examined the timing and extent of glacial advances and retreats in the northeast sector of the Brooks Range, Alaska, since the end of the last great ice age about 11,700 years ago during the ‘Holocene’.

To shed light on whether Holocene climate trends derived from the Central Brooks Range were a local phenomenon or more regional in scale, she “used remote sensing techniques to reconstruct previous glacial extents, as well as cosmogenic dating methods to determine the time”. .

“Overall, my study aims to fulfill a larger goal of understanding the role of regional climate in the glacial extent of an area on a thousand-year scale.”

Advisors: Emily Peterman, Phil Camille, Michelle Fame

Life in the Dirt: Nitrogen Mineralization Controls on Organic Farms: Lucie Nolden ’22

“Without human intervention, the soil can take care of itself. Robust soil ecosystems recycle nutrients like nitrogen through fixation by bacteria in root nodules, mineralization of organic nitrogen into forms available for plants and immobilization through plant uptake,” Nolden said. “But crop production and fertilizer application can disrupt the soil nitrogen circular economy.”

Nolden spent the fall talking to organic farmers in Maine and studying their soil to learn how farmers can better support natural nitrogen mineralization. This would increase yields and reduce the need for fertilizer application.

“I have found that total soil organic carbon, along with the ‘priming effect’ of living roots, may be among the most important controls on nitrogen mineralization, and I argue that agricultural methods Conservation programs supporting the entire soil ecosystem may be the best approach to supporting the nitrogen cycle,” she concluded.

Advisor: Phil Camille

Trends in the Trench: Characterizing Warming Patterns in the Northeast Channel of the Gulf of Maine: Andrew Treat ’22

For his project, Treat worked with a twenty-year dataset collected at the University of Maine’s N01 hydrograph buoy to analyze long-term trends in temperature, salinity and density in the North Channel. -East. His goal was to characterize how energy in the form of heat has moved (and will continue to move) in the Gulf of Maine.

Advisor: Collin Roesler

Assessing the Feasibility and Effectiveness of Implementing CCS in the US Energy Sector: Angus Parton ’22

Parton studied the feasibility of large-scale implementation of carbon capture and storage (CCS) technologies in the energy sector in the United States.

“Over the past several months, I have researched CCS infrastructure and US and international policy to assess the need for this technology and the likelihood of its implementation,” he said. “This project was born in response to the global failure to reduce greenhouse gas emissions despite the urgency and scale of anthropogenic climate change.”

“The political and economic barriers to meaningful progress on emissions reductions demand that we now consider these more ‘radical’ solutions to climate change in tandem with more traditional ones,” he explained. “CCS will help address the urgency of the climate problem faster than emissions reduction policy and therefore needs to be considered immediately.”

Advisor: Emily Peterman