Michael A. Casso
United States Geological Survey
13 Papers
22 Citations
Michael A. Casso is an academic researcher from United States Geological Survey. The author has contributed to research in topics: Bay & Sediment. The author has an hindex of 7, co-authored 13 publications. Previous affiliations of Michael A. Casso include Woods Hole Oceanographic Institution.
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Papers
A simple headspace equilibration method for measuring dissolved methane
Cédric Magen,Cédric Magen,Laura L. Lapham,John W. Pohlman,Kathleen S. Marshall,Samantha Bosman,Michael A. Casso,Jeffrey P. Chanton +7 more
TL;DR: In this article, the authors revisited the headspace equilibration technique and described a simple, inexpensive, and reliable method to measure methane in fresh and seawater, regardless of concentration.
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Enhanced CO2 uptake at a shallow Arctic Ocean seep field overwhelms the positive warming potential of emitted methane
John W. Pohlman,Jens Greinert,Jens Greinert,Carolyn D. Ruppel,Anna Silyakova,Lisa Vielstädte,Michael A. Casso,Jürgen Mienert,Stefan Bünz +8 more
TL;DR: Surface water characteristics indicate that upwelling of cold, nutrient-rich water from near the seafloor accompanies methane emissions and stimulates CO2 consumption by photosynthesizing phytoplankton, challenging the widely held perception that areas characterized by shallow-water methane seeps and/or strongly elevated sea−air methane flux always increase the global atmospheric greenhouse gas burden.
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Quantity, composition, and source of sediment collected in sediment traps along the fringing coral reef off Molokai, Hawaii.
TL;DR: The high trapping rate and low sediment cover indicate that coral surfaces on the fore reef are exposed to transient resuspended sediment, and that the traps do not measure net sediment accumulation on the reef surface.
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Compound specific amino acid δ 15 N in marine sediments: A new approach for studies of the marine nitrogen cycle
TL;DR: In this article, compound-specific nitrogen isotope analyses of individual amino acids (δ15NAA) are used to decouple changes in surface nutrient N from trophic effects.
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The effect of the new Massachusetts Bay sewage outfall on the concentrations of metals and bacterial spores in nearby bottom and suspended sediments
TL;DR: Since the new outfall for Boston's treated sewage effluent began operation on September 6, 2000, no change has been observed in concentrations of silver or Clostridium perfringens spores, in bottom sediments at a site 2.5 km west of the outfall.
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