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Geobiology of marine magnetotactic bacteria
(Massachusetts Institute of Technology, 2006)
Magnetotactic bacteria (MTB) biomineralize intracellular membrane-bound crystals of magnetite (Fe3O4) or greigite (Fe3S4), and are abundant in the suboxic to anoxic zones of stratified marine environments worldwide. Their ...
Relating behavioral context to acoustic parameters of bottlenose dolphin (Tursiops truncatus) vocalizations
(Massachusetts Institute of Technology, 2001)
This thesis presents methods to analyze the function of vocalizations of the bottlenose dolphin, Tursiops truncatus. The thesis uses the social interaction as the basic unit of analysis, and maintains a deliberate focus ...
The role of denitrification in the nitrogen cycle of New England salt marshes
(Massachusetts Institute of Technology, 2002)
I used direct measurements of nitrogen gas (N₂ fluxes and a ¹⁵N stable isotope tracer to determine the contribution of denitrification to salt marsh sediment N cycling. Denitrification in salt marsh tidal creekbottoms is ...
Characterization of resistance to halogenated aromatic hydrocarbons in a population of Fundulus heteroclitus from a marine superfund site
(Massachusetts Institute of Technology, 1999)
Iron limitation and the role of Siderophores in marine Synechococcus
(Massachusetts Institute of Technology, 2009)
Marine cyanobacteria in the genus Synechococcus are widely distributed and contribute significantly to global primary productivity. In many parts of the ocean their growth is limited by a lack of iron, an essential nutrient ...
Comparative analyses of aryl hydrocarbon receptor structure, function, and evolution in marine mammals
(Massachusetts Institute of Technology, 2007)
Marine mammals possess high body burdens of persistent organic pollutants, including PCBs and dioxin-like compounds (DLC). Chronic environmental or dietary exposure to these chemicals can disrupt the function of reproductive ...
The aggregation of clay minerals and marine microalgal cells : physicochemical theory and implications for controlling harmful algal blooms
(Massachusetts Institute of Technology, 2001)
In recent years, the use of clay minerals has emerged as one of the most promising strategies for directly controlling harmful algal blooms (HABs). Its principle is based on the mutual aggregation of algal cells and mineral ...
Trace metals and the ecology of marine cyanobacteria
(Massachusetts Institute of Technology, 2000)
The marine cyanobacteria Synechococcus and Prochlorococcus are important primary producers in oligotrophic oceans. The abundance and cell division rates of these cyanobacteria can be influenced by trace metals such as iron ...