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Gillian Stewart

Professor
Marine Biogeochemistry

Science Building, Room E-218
Phone: 718-997-3104
gillian.stewart@qc.cuny.edu



View Resume

Research Interests

Dr. Stewart is a biogeochemist with interest in the interactions between organisms and elemental cycling, particularly in the ocean. Currently she uses natural radionuclides to investigate the trophic transfer and bioaccumulation of metals by plankton, as well as to trace organic carbon cycling in the surface ocean. Her work sheds light on the mechanisms of contaminant accumulation in ecosystems as well as the ocean’s potential to sequester atmospheric carbon dioxide, a greenhouse gas. Further, her research into the behavior of present-day radioactive tracers may provide insight into the use of naturally-occurring paleotracers in the ocean. Thus far, she has focused her research on the unique, short-lived, particle-reactive isotope polonium-210. At Queens College she plans to pursue regional environmental contaminant studies and continue her work on large-scale oceanographic questions.

Possible Future and Student Projects:

·         Metal accumulation and distribution in local coastal waterways
·         The influence of dust on carbon assimilation in plankton
·         Development of more specific environmental tracers for elemental cycling
·         The importance of food web structure in determining bioaccumulation
·         The effect of different particle types on radioisotope fractionation
·         Species-specific nutrient uptake and loss in the plankton

Teaching Philosophy
 
My teaching philosophy is very straight-forward: Tough but fair.
Courses taught
Undergraduate
·         GEOL 08 Oceanography (Fall '07)
·         GEOL 25 Natural Resources and the Environment
·         ENSCI 111 Introduction to Environmental Science
Graduate
·         GEOL 799.3 Special Topics: Environmental Biogeochemistry


 
 

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