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  • Our Mission

    E3B’s mission is to educate a new generation of scientists and practitioners in the theory and methods of ecology, evolution, and environmental biology. Our educational programs emphasize a multi-disciplinary perspective to understand life on Earth from the level of organisms to global processes that sustain humanity and all life.

  • Our Mission

    E3B’s mission is to educate a new generation of scientists and practitioners in the theory and methods of ecology, evolution, and environmental biology. Our educational programs emphasize a multi-disciplinary perspective to understand life on Earth from the level of organisms to global processes that sustain humanity and all life.

  • Our Mission

    E3B’s mission is to educate a new generation of scientists and practitioners in the theory and methods of ecology, evolution, and environmental biology. Our educational programs emphasize a multi-disciplinary perspective to understand life on Earth from the level of organisms to global processes that sustain humanity and all life.

  • Our Mission

    E3B’s mission is to educate a new generation of scientists and practitioners in the theory and methods of ecology, evolution, and environmental biology. Our educational programs emphasize a multi-disciplinary perspective to understand life on Earth from the level of organisms to global processes that sustain humanity and all life.

From the Field

Congratulations to the E3B students won prizes at the NEEP (Northeastern Evolutionary Primatologists) meeting at Boston University!

MA student Lilah Sciakey won runner-up for best podium presentation, EBHS alumna Sofia Schembari (pictured) won runner up for best poster, and PhD student Amanda Johnson received an honorable mention for her poster.

The E3B department is delighted to announce that Dr. Sian Kou-Giesbrecht has won the 2021 Don Jay Melnick Award!
Named in honor of one of the founders of our department, the Melnick Award recognizes outstanding dissertation work and other departmental activities. Using an uncommonly wide array of techniques, Sian’s thesis overturned a long-held belief. Prior to her work, nitrogen-fixing trees were thought to be a boon to climate mitigation. The idea was that their rapid growth and ability to fertilize the surrounding soil led to greater carbon storage in plants. In her first chapter, an elegant bit of mathematical theory, Sian showed that another consequence of nitrogen fixation – emissions of nitrous oxide (a powerful greenhouse gas) from the soil – could counteract the carbon storage effect. Her theory predicted that nitrogen-fixing trees could actually be worse for climate (compared to non-fixing trees), and under what conditions. Sian’s second chapter used a meta-analysis to show that the nitrous oxide effect predicted by her theory was borne out across a wide range of sites. Her third chapter combined painstaking, rigorous experimental fieldwork, lab work, statistical modeling, and an extended theoretical model to show that her theoretical predictions were correct in Black Rock Forest. These three chapters have changed the way we think about nitrogen-fixing trees and climate. Sian’s fourth chapter developed, tested, and validated a new version of the nitrogen cycle in the land model of NOAA’s earth system/climate model. This herculean effort will pay off for decades, given the centrality of NOAA’s model for climate science and policy.
In addition to her outstanding research, Sian was a phenomenal teacher, an excellent departmental citizen, and a strong voice for diversity. She is now revamping the nitrogen cycle in another earth system model as a postdoc at the Canadian Centre for Climate Modeling and Analysis.
Congratulations Sian!
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