Christopher B Trivedi

Christopher B Trivedi
Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ | GFZ · Interface Geochemistry

Ph.D.

About

19
Publications
2,795
Reads
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114
Citations
Additional affiliations
January 2019 - present
Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
Position
  • PostDoc Position
August 2018 - December 2018
Colorado School of Mines
Position
  • PostDoc Position
Education
January 2014 - July 2018
Colorado School of Mines
Field of study
  • Environmental Engineering
August 2012 - December 2013
Colorado School of Mines
Field of study
  • Environmental Engineering

Publications

Publications (19)
Article
Full-text available
Blooms of microalgae on glaciers and ice sheets are amplifying surface ice melting rates, which are already affected by climate change. Most studies on glacial microorganisms (including snow and glacier ice algae) have so far focused on the spring and summer melt season, leading to a temporal bias, and a knowledge gap in our understanding of the va...
Article
Full-text available
The preservation of nucleic acids for high-throughput sequencing is an ongoing challenge for field scientists. In particular, samples that are low biomass, or that have to be collected and preserved in logistically challenging environments (such as remote sites or during long sampling campaigns) can pose exceptional difficulties. With this work, we...
Article
Full-text available
Elliptical sulfate-rich features, stained red by the presence of iron oxides, are set within permafrost and carbonate rock at Borup Fiord Pass in the Canadian High Arctic. These features, which vary in diameter from ∼0.5 to 3 m, exhibit the co-localization of sulfur (S) and iron (Fe) minerals, with S and Fe both preserved in multiple oxidation stat...
Article
Full-text available
Lockdowns and “stay-at-home” orders, starting in March 2020, shuttered bench and field dependent research across the world as a consequence of the global COVID-19 pandemic. The pandemic continues to have an impact on research progress and career development, especially for graduate students and early career researchers, as strict social distance li...
Article
Full-text available
A unique environment at Borup Fiord Pass is characterized by a sulfur-enriched glacial ecosystem in the low-temperature Canadian High Arctic. BFP represents one of the best terrestrial analog sites for studying icy, sulfur-rich worlds outside our own, such as Europa and Mars. The site also allows investigation of sulfur-based microbial metabolisms...
Article
Full-text available
Our current knowledge of host–virus interactions in biofilms is limited to computational predictions based on laboratory experiments with a small number of cultured bacteria. However, natural biofilms are diverse and chiefly composed of uncultured bacteria and archaea with no viral infection patterns and lifestyle predictions described to date. Her...
Preprint
Full-text available
Biological sulfur cycling in polar, low-temperature ecosystems is an understudied phenomenon in part due to difficulty of access and the ephemeral nature of such environments. One such environment where sulfur cycling plays an important role in microbial metabolisms is located at Borup Fiord Pass (BFP) in the Canadian High Arctic. Here, transient s...
Article
Full-text available
A sulfur-dominated supraglacial spring system found at Borup Fiord Pass (BFP), Ellesmere Island, Nunavut, Canada, is a unique sulfur-on-ice system expressed along the toe of a glacier. BFP has an intermittent flowing, subsurface-derived, glacial spring that creates a large white-yellow icing (aufeis) that extends down-valley. Over field campaigns i...
Article
Full-text available
Ancient putative microbial structures that appear in the rock record commonly serve as evidence of early life on Earth, but thedetails of their formation remain unclear. The study of modern microbial mat structures can help inform the properties of theirancient counterparts, but modern mineralizing mat systems with morphological similarity to ancie...
Article
Large-scale deposits of elemental sulfur form annually on a glacier’s surface at Borup Fiord Pass in the Canadian High Arctic. However, the mechanisms of mineralization and stabilization of elemental sulfur at this site are currently unknown. Here we show that x-ray diffraction (XRD) data for fresh sulfur precipitates collected from the surface of...
Article
Microbial fuel cells (MFCs) are a promising energy-positive wastewater treatment technology, however, the system's cost-effectiveness has been overlooked. In this study, two new anode materials - hard felt (HF) and carbon foam (CF) - were evaluated against the standard graphite brush (GB) to determine if using inexpensive materials with less than i...
Poster
Ancient conical stromatolite formation is poorly understood and modern analogues are uncommon (and typically not CaCO3). However, a team from the 2015 International GeoBiology Course investigated carbonate-rich microbial cones found in a hot spring pool near Little Hot Creek (LHC), Long Valley Caldera, California, in order to improve the understand...
Conference Paper
Full-text available
Microbial S oxidation is a common process in hydrothermal systems, sulfidic springs and suboxic zones. In addition, we have recently interrogated a unique microbial habitat generated by the formation and thawing of ices that contain mM levels of sulfide, giving rise to the precipitation of km-scale deposits of elemental sulfur in the Canadian High...

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