Research Log
Oceans cover three quarters of the earth’s surface. Biogeochemical processes in the ocean profoundly affect present day climate, as well as future climate change . . . read more
>> Role of the plankton community in the particle flux in the Sargasso Sea
The ‘biological pump’, the photosynthetically mediated transformation of dissolved inorganic carbon into particulate and dissolved organic carbon in surface ocean waters and its subsequent export to deep water, is a significant driver of the atmospheric carbon uptake by the oceans . . . read more
Microorganisms living in sea ice affect carbon and nutrient cycling in polar seas, but their susceptibility to the changing environmental conditions of polar regions is not well understood . . . read more
>> Astrobiology and Cyanobacterial Aggregation
In today’s ocean, animal grazers produce fecal pellets and aggregates that dominate carbon export, or the transport of organic matter from the surface ocean to the deep sea. During most of Earth’s history. . . read more
>> Carbon Flux in the Subtropical North Atlantic
The subtropical gyres are the largest coherent biomes of the global oceans, circular water masses located in the subtropical latitudes of each major ocean basin, and bounded by several ocean currents . . . read more
>> Algae blooms in the Salt River Reservoirs
The Salt River reservoirs are a major water supply system for the Phoenix Metro area . . . read more
>> Algae Induced Taste and Odor
The reservoirs in central Arizona are a major water supply system for the Phoenix metropolitan area. These reservoirs are fed by a combination of the Salt River watershed, the Verde River watershed, and Central Arizona Project water transported by a canal system from the Colorado River. . . read more