Tags: Athens Events


Seminar- Sediment transport in coastal systems: Implications for water quality and carbon cycling

ABSTRACT: Sediment transport processes affect oxygen and carbon dynamics in coastal environments through a variety of processes.  Seabed resuspension, for example, can vertically mix sediment and water, facilitating decomposition of organic matter and oxygen consumption. Redistribution of inorganic and organic particles among coastal environments, e.g. between marshes and estuaries, can also affect biogeochemical budgets. The relative…


Seminar- Curing Environmental Collapse? Challenges and Opportunities due to Ecosystem Tipping Points


Seminar- All microorganisms must die: mechanisms of mortality in the plankton

Processes that either promote growth or cause mortality drive the abundance of all organisms. For microbes that have a lifespan measured in hours to days, small changes in growth and mortality rates can have significant impacts on their population dynamics. While factors that influence phytoplankton growth are often examined, it has been difficult to parameterize phytoplankton population dynamics due to incomplete estimates of phytoplankton…


Seminar- Modeling abundance and diversity of microbiomes

Abstract:   High-throughput sequencing has advanced our understanding of the role that bacteria and archaea play in marine, terrestrial and host-associated health. Microbial community ecology differs in many ways from macroecology, and therefore new statistical methods are required to analyze microbiome data. In this talk I will present two new statistical methods for the analysis of microbiome data. The first, DivNet, estimates the…


Seminar- Surface-Active Organics in Marine Aerosol Particles


Seminar- The Impact of Organic Compounds on the Cycling of Trace Metals in the Ocean


Seminar- The Galapagos Marine Microbiome


Seminar- The Dynamic Microbiome of the Abundant Marine Planktonic Crustaceans, Copepods

ABSTRACT:  Copepods - small marine crustaceans often referred to as the most abundant animal on Earth - form a vital link in carbon and nitrogen fluxes in the oceanic water column food webs. Copepod microbiome may be important in providing unique niches for marine bacteria and in influencing copepod health, and its activities potentially have quantitative importance in marine biogeochemical cycles. In this talk I will discuss recent studies…


Seminar- Quantifying biogeochemical changes in coastal ecosystems exposed to vegetation shifts and saltwater intrusion


Seminar- A Sea of Change -- Microbial Dynamics After the Macondo Blowout

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