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Biogeochemistry

deep sea

Biogeochemistry examines the role of biological processes in mediating the chemical and geological dynamics of the Earth’s atmosphere, hydrosphere and lithosphere. It is an inherently interdisciplinary science and UGA Marine Sciences faculty are actively involved in areas of biogeochemical research including aquatic photochemistry, the exchange of trace gasses between the ocean and atmosphere, nutrient cycling, organic matter degradation, and the use of biomarkers. This work takes place in coastal environments such as salt marshes, extreme environments, the open ocean, and ocean sediments. The integrative nature of this work requires the application of tools from a wide range of disciplines such as microbiology, geochemistry, ecology, hydrology, mathematics and physics. 

Personnel

Research in the Bik Lab is intensely interdisciplinary, using high-throughput sequencing and diverse –Omics approaches to explore broad patterns in marine microbes (biodiversity and phylogeography, functional roles for microbial taxa, and the relationship between species and environmental parameters), with an emphasis on microbial eukaryotes in…

Aspects of environmental chemistry, chemical oceanography, and atmospheric chemistry including:
(1) The transport of biologically important elements to oceans and estuaries via aerosols 
(2) The processes controlling aerosol elemental solubility and metal speciation 
(3) The fate of aerosol derived trace elements and nutrients…

My research involves the use of mathematical and computer modeling to understand how different marine systems function and how they might change under changing environmental and climate conditions. For me, a marine system can mean many things; a the biological and chemical transformations of a single particle of detrital material settling…

Activities in the Joye Research Group aim to discover, document, resolve, and understand the complex interactions that drive elemental cycling in coastal and open ocean environments across the globe. Our purpose is to elucidate feedbacks between environmental, microbiological, and biogeochemical dynamics. Our research examines the effects of…

Organic geochemistry and biogeochemistry:

1. Sources, transport, alterations and fate of organic compounds in aquatic and atmospheric environments;

2. Molecular characterization of riverine/estuarine/marine dissolved organic matter (DOM); 

3. Microbial- and photochemical-derived changes in DOM composition.

 

Reactive-Transport Modeling and Biogeochemical Cycling 
bioturbation, microbial metabolism, in silico microbial models and upscaling, nutrient dynamics and human impacts at the land-ocean interface, salt marsh carbon and groundwater dynamics, iron cycling and redox oscillations, hydrothermal vents, oil spill impacts

Research Emphasis: 

Photochemical reactions and their effect on aquatic carbon cycles; reactive oxygen species (ROS), trace gases, and relation to optics and biological processes

Remote sensing for  global and regional estimates of photochemical processes and biogeochemical impact.

Fluxes of trace gases and their…

My research group focuses on coastal ecosystem ecology. I seek to develop an integrated understanding of ecological and biogeochemical processes in order to refine the role of estuaries and wetlands in the global carbon cycle and predict the likelihood of recovery from human disturbances. My group uses innovative geochemical tracer approaches,…

Research Emphasis:

Yager's interdisciplinary research approach includes oceanography, marine microbial ecology and biogeochemistry. Her work concentrates on the interactions between climate and marine ecosystems, and includes both fieldwork and modeling. Recent projects include investigating the effects of melting ice sheets on Arctic…

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