A5014777100- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Marine and coastal ecosystems
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Reservoir Engineering and Simulation Methods
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- Marine Biology and Ecology Research
- Genomics and Phylogenetic Studies
- Microbial bioremediation and biosurfactants
- Geochemistry and Geologic Mapping
- Oil Spill Detection and Mitigation
- Geochemistry and Elemental Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Fuel Cells and Bioremediation
- Protist diversity and phylogeny
- Coral and Marine Ecosystems Studies
- Toxic Organic Pollutants Impact
- Geological formations and processes
- Mine drainage and remediation techniques
- earthquake and tectonic studies
- Soil and Water Nutrient Dynamics
Texas A&M University
2015-2024
University of Southern California
2009-2024
Routledge (United Kingdom)
2024
Expedition Technology (United States)
2024
International Ocean Discovery Program
2017-2024
Mitchell Institute
2021-2023
Oregon State University
2006-2021
University of Rhode Island
2021
University of Exeter
2021
Bigelow Laboratory for Ocean Sciences
2021
The Louisiana shelf is the largest zone of seasonally oxygen-depleted coastal bottom water in U.S. This condition results from high freshwater and nutrient input Mississippi River resulting primary productivity river plume. hypoxic has doubled area since regular measurements began 1985. Identification nutrient(s) limiting phytoplankton growth on their sources important for developing hypoxia-reduction strategies; nitrogen (N) been considered most to date. In this study, we measured multiple...
Hydrothermal chimneys are a globally dispersed habitat on the seafloor associated with mid-ocean ridge (MOR) spreading centers. Active, hot, venting sulfide structures from MORs have been examined for microbial diversity and ecology since their discovery in mid-1970s, recent work has also begun to explore microbiology of inactive sulfides--structures that persist decades millennia form moderate massive deposits at below seafloor. Here we used tag pyrosequencing V6 region 16S rRNA full-length...
Earth's subsurface environment is one of the largest, yet least studied, biomes on Earth, and many questions remain regarding what microorganisms are indigenous to subsurface. Through activity Census Deep Life (CoDL) Carbon Observatory, an open access 16S ribosomal RNA gene sequence database from diverse environments has been compiled. However, due low quantities biomass in deep subsurface, potential for incorporation contaminants reagents used during sample collection, processing, and/or...
ABSTRACT Microaerophilic, neutrophilic, iron-oxidizing bacteria (FeOB) grow via the oxidation of reduced Fe(II) at or near neutral pH, in presence oxygen, making them relevant numerous environments with elevated concentrations. However, biochemical mechanisms for by these neutrophilic FeOB are unknown, and genetic markers this process unavailable. In ocean, microaerophilic microorganisms genus Mariprofundus class Zetaproteobacteria only organisms known to chemolithoautotrophically oxidize Fe...
Abstract The production of extracellular polymeric substances (EPS) by planktonic microbes can influence the fate oil and chemical dispersants in ocean through emulsification, degradation, dispersion, aggregation, and/or sedimentation. In turn, microbial community structure function, including character EPS, is influenced concentration composition dispersants. For example, marine snow its sedimentation flocculent accumulation to seafloor were observed on an expansive scale after Deepwater...
During the Deepwater Horizon (DWH) oil spill, massive quantities of were deposited on seafloor via a large-scale marine oil-snow sedimentation and flocculent accumulation (MOSSFA) event. The role chemical dispersants (e.g. Corexit) applied during DWH spill clean-up in helping or hindering formation this MOSSFA event are not well understood. Here, we present first experiment related to specifically investigate relationship between microbial community structure, Corexit®, coastal surface...
Iron oxides are important components of our soil, water supplies, and ecosystems, as they sequester nutrients, carbon, metals. Microorganisms can form iron oxides, but it is unclear whether this a significant mechanism in the environment. Unlike other major microbial energy metabolisms, there no marker gene for oxidation, hindering ability to track these microbes. Here, we investigate promising possible oxidation gene, cyc2 , iron-rich hydrothermal vents, where iron-oxidizing microbes...
The vast marine deep biosphere consists of microbial habitats within sediment, pore waters, upper basaltic crust and the fluids that circulate throughout it. A wide range temperature, pressure, pH, electron donor acceptor conditions exists – all which can combine to affect carbon nutrient cycling result in gradients on spatial scales ranging from millimeters kilometers. Diverse mostly uncharacterized microorganisms live these habitats, potentially play a role mediating global scale...
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 58:31-44 (2009) - DOI: https://doi.org/10.3354/ame01348 Phytoplankton taxon-specific orthophosphate (Pi) and ATP utilization in western subtropical North Atlantic John R. Casey1, Michael W. Lomas1,*, Vanessa K. Michelou2, Sonya T. Dyhrman3, Elizabeth D. Orchard3, James Ammerman4, Jason B. Sylvan5 1Bermuda Institute of...
Abstract 809 deep IODP Hole U1473A at Atlantis Bank, SWIR, is 2.2 km from 1,508‐m 735B and 1.4 158‐m 1105A. With mapping, it provides the first 3‐D view of upper levels a 660‐km 2 lower crustal batholith. It laterally vertically zoned, representing complex interplay cyclic intrusion, ongoing deformation, with kilometer‐scale upward lateral migration interstial melt. Transform wall dives over gabbro‐peridotite contact found only evolved gabbro intruded directly into mantle near transform....