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Buchwald Lab @dalhousie:
Marine Microbial Nitrogen
Stable Isotope Biogeochemistry

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Centrifuge tubes with nitrite

Sunset Costa Rica Upwelling Dome

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WHAT WE DO
Natural abundance stable isotopes of N and O in nitrite and nitrate can be powerful tools for interpreting nitrogen
biogeochemistry in the environment. Our research interests focus around measuring the isotope systematics of
relevant microbial nitrogen transformation processes and using these values to interpret natural abundance iso-
topes in a wide range of environments including wastewater, lakes, estuaries, rivers and the ocean. An overarching
goal of the research is to use these tools to understand how anthropogenic nitrogen pollution has affected our
local ecosystems.
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