 |
   |
|
|
|
|
|
 |
Science teacher, Sehome High School
History of life on Earth, history of science, geology, and mechanical things. Design of effective curriculum, how people learn (engage, do, make mistakes, learn). |
|
 |
University of Hawaii
My research centers upon the synergy between microbes and their chemical environment in marine redox transition zones. Gradients of chemical species used as energy sources can constrain an organism to a particular metabolism, require it to switch to an alternate metabolism, or generate a displacement within the microbial community structure. My group will be using an In Situ Electrochemical Analyzer (ISEA) to perform real-time voltammetric analyses within hydrothermal fluids and microbial mats. Voltammetry allows simultaneous detection and quantification of multiple chemical species, including O2, Mn2+, Fe2+, H2S/HS-, Sx2-, S0(aq), S2O32-, S4O62-, FeS(aq), and Fe3+. Our ISEA provide an efficient and valuable means for directed discrete sampling of hydrothermal fluids and microbial flocs, as well as previously unattainable high spatial resolution geochemical profiles through the mats. |
|
 |
Woods Hole Oceanographic Institution
Stable isotope geochemistry (Fe-, S-, Se-, Ge-isotopes), trace metal/metalloids geochemistry, and isotope tracers of seafloor hydrothermal systems and deep biosphere. |
|
 |
University of Colorado, Boulder
My group has been working to track rates of Fe and Mn oxidation and biofilm formation on freshly prepared basalt surfaces deployed across Loihi Seamount over 1-5 year time-scales. This data is also integrated with information on weathering products, particularly Fe and Mn minerals, on natural basalts present at each site. Mineralogical characterization is conducted by synchrotron-based x-ray scattering and spectroscopy (bulk and spatially-resolved). We are are also culturing organisms that can be sustained by simulating serpentinization reactions. |
|
 |
Oregon State University, EarthRef.org
and FeMO Webmaster
The main design,
engineering and maintenance of EarthRef.org are Anthony's responsibilities. He combines his database work with science projects involving 40Ar/39Ar geochronology, seamount geochemistry, information technology and software development. One of his main science objectives is to understand the "true" nature of intra-plate volcanism, normally explained by the now infamous "hotspot"
hypothesis. |
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
 |
Graduate Student, Scripps Institution of Oceanography
Microbial communities associated with basalt substrates of varying composition. Basalt dissolution ... |
|
 |
Postdoc, Oregon Health and Sciences University
I am interested in the role that microorganisms play in the biogeochemical cycling of carbon and manganese. I am using a polyphasic approach that includes the following: 1) culture-based methods to isolate more ecologically significant strains and to determine whether Mn-oxidizing bacteria may play a role in fixation of inorganic carbon into organic carbon in mixed or pure cultures, 2) culture-independent methods to identify the key organisms associated with Mn(II)-stimulated carbon uptake in environmental samples, and 3) peptide probes to physically separate Mn oxides and associated microorganisms from other particles and microbes, so that those organisms may be identified. |
|
 |
Postdoc, Woods Hole Oceanographic Institution
I study the geomicrobiology of terrestrial and marine iron-oxidizing microbes. I am interested in how they oxidize iron and affect iron mineralogy. My approaches include electron microscopy and synchrotron-based x-ray microscopy to study cellular ultrastructure and spatial relationships between cells, extracellular polymers, and minerals. I also study proteins from cultured and environmental samples in search of iron oxidizing enzymes. |
|
 |
Graduate Student, Oregon Health and Sciences University |
|
 |
Graduate Student, University of Southern California |
|
 |
Postdoc, University of Southern California
Microbe/mineral interactions in the deep biosphere, chemolithoautotrophy. |
|
 |
Graduate Student, Western Washington University
T-RFLP analysis of microbial mats. |
|
 |
Graduate Student, Scripps Institution of Oceanography
I study the abundance of Fe-oxidizing and siderophore producing bacteria on Vailulu’u seamount (Microbial diversity data: a) culture-based: FeOB and siderophore producers, b) molecular studies: clone libraries).
Then I study the mechanisms of nutrient and energy acquisition from basaltic glass, and finally the effect of microbial activity on basalt alteration (rate of dissolution, effects of biofilms on surface structure and chemistry of glass). |
|
|
|
|
|
|
