Shallow-water marine sediments are one of most productive marine areas due to the abundance of benthic microalgae, also known as microphytobenthos (MPB). MPB inhabiting intertidal areas contributes significantly to system productivity and controls to a great extent the biogeochemical cycles of nitrogen and carbon in such systems.
My research activity is focused on primary production of MPB and its influence on the nutrient dynamic at the water-sediment interface. I use a combination of methods including measurements using selective microsensors (e.g. O2, H2S and pH) and more traditional biogeochemical techniques. I perform measurements both in laboratory microcosms and in situ experiments to achieve my goals.
At present, I am working: 1) to understand the effects of tidal cycles (at the microscale) on changes in the O2 and inorganic nutrients across the sediment-water interface; 2) to measure the benthic metabolism and understand the biogeochemistry of acid mine drainage affected reservoirs.