Member Since 2000
Colleen Hansel
Senior Scientist, Woods Hole Oceanographic Institution
AGU Research
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High resolution physical and biogeochemical gradients drive nitrogen cycling in a meromictic coastal pond
OCEAN SCIENCES 2024
physical-biological interactions | 22 february 2024
Scott D. Wankel, Colleen Hansel, Kate Lane, Donald...
Redox gradients and zonation are major characteristics underpinning elemental cycling across a wide range of Earth surface environments. Understanding...
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Widespread genetic potential and phenotypic expression of extracellular superoxide production in diverse Scleractinian coral species
OCEAN SCIENCES 2024
ocean biology and biogeochemistry | 20 february 2024
Kalina C. Grabb, Santiago Herrera, Loretta Roberso...
Reactive oxygen species (ROS), including superoxide, are produced by all aerobic organisms and have beneficial and detrimental effects depending on th...
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Towards a better understanding of thallium isotope cycling in modern redox-stratified settings
UNDERSTANDING THE INFLUENCES OF SEDIMENTARY AND OCEANOGRAPHIC PROCESSES ON GEOCHEMICAL ARCHIVES ACROSS GEOLOGIC TIME II ORAL
paleoceanography and paleoclimatology | 15 december 2022
Chadlin M. Ostrander, Sune Nielsen, Elizabeth Swan...
Thallium (Tl) isotopes are being used as a tool for tracking the history of molecular oxygen (O2) in Earths oceans. Thallium isotope compositions (ε20...
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Microscale observations of old, stable organic carbon in pelagic sediment
UNDERSTANDING THE INFLUENCES OF SEDIMENTARY AND OCEANOGRAPHIC PROCESSES ON GEOCHEMICAL ARCHIVES I ORAL
paleoceanography and paleoclimatology | 14 december 2021
Emily R. Estes, Colleen Hansel
Pelagic sediments host low concentrations of organic matter preserved over extremely long time scales (Ma). Despite the low concentrations, the global...
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Foraminiferal Mn/Ca as Bottom‐Water Hypoxia Proxy: An Assessment of Nonionella stella in the Santa Barbara Basin, USA
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
28 october 2021
Inda Brinkmann, Sha ni, Magali Schweizer, Veroniqu...
Hypoxia is of increasing concern in marine areas, calling for a better understanding of mechanisms leading to decreasing dissolved oxygen concentra...
Inhibited Manganese Oxide Formation Hinders Cobalt Scavenging in the Ross Sea
GLOBAL BIOGEOCHEMICAL CYCLES
21 may 2021
Veronique Oldham, Rebecca Chmiel, Colleen Hansel, ...
The Southern Ocean plays a critical role in regulating global uptake of atmospheric CO2. Trace elements like iron (Fe), cobalt (Co), and manganese ...
Investigating the role of extracellular superoxide in coral health through sensor development and comparative genomics
COASTAL SCIENCE IN A CHANGING WORLD: NEXUS OF ECOLOGY, HYDROLOGY, AND BIOGEOCHEMISTRY I
global environmental change | 10 december 2020
Kalina C. Grabb, Jason Kapit, Scott D. Wankel, Amy...
Reactive oxygen species (ROS), including superoxide, are produced by all aerobic organisms. In marine organisms, intracellular ROS have been implicate...
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Spectroscopic Insights Into Ferromanganese Crust Formation and Diagenesis
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
11 november 2020
Kevin M. Sutherland, Scott D. Wankel, James R. Hei...
Marine ferromanganese deposits, often called the scavengers of the sea, adsorb and coprecipitate with a wide range of metals of great interest for ...