Results 41 to 50 of about 33,080 (279)

Influence of Ecological Restoration on Mercury Mobility and Microbial Activities on Former Guyanese Mining Sites

Applied Sciences, 2021
As rehabilitation efforts in Guyana are recent, there is little information on the effect of different ecological rehabilitation protocols for Guyana’s mining sites on biogeochemical cycles and mercury mobility.
Ewan Couic, Vanessa Alphonse, Alexandre Livet, Stéphanie Giusti-Miller, Noureddine Bousserrhine   +4 more
doaj   +1 more source

The Biogeochemistry of Marine Polysaccharides: Sources, Inventories, and Bacterial Drivers of the Carbohydrate Cycle.

Annual Review of Marine Science, 2020
Polysaccharides are major components of macroalgal and phytoplankton biomass and constitute a large fraction of the organic matter produced and degraded in the ocean.
C. Arnosti, Matthias Wietz, T. Brinkhoff, J. Hehemann, D. Probandt, L. Zeugner, R. Amann   +6 more
semanticscholar   +1 more source

Phenazine‐Based Synthetic Biology to Signal Between Cells and Electrodes

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Bioelectronic systems that enable seamless communication between electronic devices and living systems represent a transformative frontier in biotechnology. Among available methodologies, redox based signaling offers unique advantages due to its ubiquity in biology and compatibility with standard electrochemical equipment, expanding on ...
Eric VanArsdale, Monica Chu, Sally Wang, Divya Muthusamy, Eric Wold, Yi Liu, G. F. Payne, Tanya Tschirhart, W. E. Bentley   +8 more
wiley   +1 more source

Biodegradation of MC252 oil in oil:sand aggregates in a coastal headland beach environment

Frontiers in Microbiology, 2014
Biodegradation potential of MC252 in oil:sand aggregates, termed surface residue balls (SRBs), was examined using multiple lines of evidence on a heavily-impacted coastal headland beach in Louisiana, USA.
Vijaikrishnah eElango, Marilany eUrbano, Kendall R Lemelle, John H Pardue   +3 more
doaj   +1 more source

Pathway-Centric Analysis of Microbial Metabolic Potential and Expression Along Nutrient and Energy Gradients in the Western Atlantic Ocean

Frontiers in Marine Science, 2022
Microbial communities play integral roles in driving nutrient and energy transformations in the ocean, collectively contributing to fundamental biogeochemical cycles. Although it is well known that these communities are stratified within the water column,
Maria A. Cavaco, Maya P. Bhatia, Alyse K. Hawley, Monica Torres-Beltrán, Winifred M. Johnson, Krista Longnecker, Kishori Konwar, Elizabeth B. Kujawinski, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam   +12 more
doaj   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

Yellowstone Wildfires Increased Stream Ion Concentrations and Export

Nitrogen
Wildfires in the western U.S. have increased in severity and duration in recent decades. Severe wildfires can enhance the rates of nutrient mineralization, causing large exports of inorganic nitrogen and other ions from forests to streams.
Isabella G. Sadler, Lusha M. Tronstad, Christine Fisher, Robert O. Hall, Todd M. Koel   +4 more
doaj   +1 more source

Multiple sulfur isotope signatures of sulfite and thiosulfate reduction by the model dissimilatory sulfate-reducer, Desulfovibrio alaskensis str. G20

Frontiers in Microbiology, 2014
Dissimilatory sulfate reduction serves as a key metabolic carbon remineralization process in anoxic marine environments. Sulfate reducing microorganisms can impart a wide range in mass-dependent sulfur isotopic fractionation.
William D. Leavitt, William D. Leavitt, Renata eCummins, Marian L Schmidt, Min Sub eSim, Min Sub eSim, Shuhei eOno, Alexander S. Bradley, David T. Johnston   +8 more
doaj   +1 more source

Seasonal drivers of plant–soil–microbial community structure and functions in Western Himalayan grasslands, Pakistan

Grassland Research, EarlyView.
Plant species richness was greater in summer in both alpine and subalpine grassland ecosystems. Soil moisture demonstrates significant positive correlations with soil organic carbon and total nitrogen across seasonal periods. Microbial α‐diversity peaks during summer but maintains functional stability across seasons.
Huma Ali, Muhammad Rafiq, Allan Degen, Ben Sparrow, Zhanhuan Shang   +4 more
wiley   +1 more source

Mineral Weathering and Podzolization Control Acid Neutralization and Streamwater Chemistry Gradients in Upland Glaciated Catchments, Northeastern United States

Frontiers in Earth Science, 2019
Headwater streams in the White Mountains, NH, United States have been shown to have downstream gradients of increasing pH and concentrations of base cations coupled with decreasing concentrations of aluminum.
Scott W. Bailey, Kevin J. McGuire, Donald S. Ross, Mark B. Green, Olivia L. Fraser   +4 more
doaj   +1 more source