Articles tagged with Organic Carbon
A new study reveals that jellyfish blooms drastically alter marine food webs by shunting food energy from fish toward bacteria. The researchers found that jellyfish produce organic matter rich in carbon, which is rapidly metabolized by bacteria, reducing its potential to assimilate into the food web.
Researchers have developed a new material sensor that can detect when carbon filters in respirators become saturated with toxic vapors, providing a more accurate warning for emergency workers. The sensor uses photonic crystals made of carbon nanofibers, which change color as the filter absorbs chemicals.
Research suggests formaldehyde was likely source of solar system's organic carbon solids, abundant in comets and asteroids. The complex organic solids were formed from formaldehyde through polymerization under primitive solar system conditions.
A study analyzed five long-term experiments to predict effects of no tillage management on soil organic carbon. Harvesting substantial crop residues without added carbon would deplete soil organic carbon and increase pollution risks.
Researchers studied ancient rain, microbial life, and ocean islands to understand uplift and climate change. They found that the North American Cordillera was uplifted by ancient rain, while microbial life existed inside fluid inclusions in modern and ancient salt crystals.
Researchers have found a vast microbial ecosystem in the porous basalt rock of the upper oceanic crust, producing organic matter and exporting carbon to other systems. The discovery may influence astrobiological thinking about life on Europa and expand our understanding of the oceanic carbon cycle.
Researchers found a large shift in the carbon cycle during the Cryogenian period, which may have been triggered by the Sturtian glaciation. The disturbance could have led to the accumulation of organic carbon in the ocean and had far-reaching effects on Earth's climate.
Researchers have discovered that three Thai orchids use a wide range of fungi to absorb carbon from the soil instead of producing their own organic carbon. The study highlights the complex relationships between plants and fungi in tropical forests, emphasizing the need for further research on these interactions.
A new study by Peter K. Swart suggests that carbonate platform records are not reliable for tracking the global carbon cycle over the past 10 million years. This finding challenges widely-held ideas about CO2 levels during specific periods of Earth's geological history.
Researchers found that a portion of corn stover can be harvested for biofuel production without reducing soil organic carbon levels in high-yielding systems. This study suggests that corn stover could supply up to 25% of the biofuel crop needed by 2030.
Researchers at the University of Pittsburgh have discovered that certain organic molecules can conduct electricity as well as metal, providing a new strategy for designing electronic materials. The finding is based on the study of fullerenes, which can mimic the behavior of highly conductive atoms.
A recent study at the University of Illinois found that increased carbon dioxide in the atmosphere leads to decreased soil organic matter, contradicting expectations. The researchers attribute this finding to increased moisture in the soil, which accelerates decomposition and reduces soil productivity.
Two oxygenation events in ancient oceans between 635 and 551 million years ago led to the increase and spread of complex life, including animals. This finding supports the growing view that life and environment co-evolved during this tumultuous period of Earth history.
A Northwestern University professor is studying rivers to understand how organic carbon is processed and consumed by microorganisms, revealing that it's a bigger component of global carbon cycling than thought. The study provides a framework for assessing these processes and sheds light on the internal cycling of carbon in rivers.
A Carnegie Institution-led team finds organic compounds containing carbon and hydrogen in Martian meteorite Allan Hills 84001, suggesting that building blocks of life formed on Mars early in its history. The discovery was made by analyzing the rock's association with iron oxide mineral magnetite.
Research by University of Illinois soil scientists found that nitrogen fertilizers lead to a decline in soil organic carbon, even after decades of use. The study's findings have troubling implications for corn production and highlight the need for site-specific soil testing to optimize fertilizer rates.
Scientists at the Weizmann Institute of Science have successfully implemented doping in molecular electronics, enabling the control of electronic properties in organic molecules. This breakthrough could lead to the creation of environmentally friendly and versatile electronic components.
Researchers found that a soil model can accurately estimate carbon levels in soil, enabling farmers to verify soil carbon change and sell carbon credits. The Century model's accuracy depends on accurate soil texture data, highlighting the need for benchmark monitoring sites.
A new study suggests that early Earth haze could have provided a substantial source of organic material useful for emerging life on the planet. The researchers found that hazy conditions could have produced a similar organic haze over a wide range of methane and carbon dioxide concentrations.
Researchers found that removing just one important species in a freshwater ecosystem can seriously disrupt its functioning. The study, led by Brad Taylor, showed that the loss of the flannelmouth characin had a significant impact on carbon transport and availability in a river ecosystem.
Researchers identify a previously unrecognized link between mid-latitude climate dynamics and tropical African climate, leading to exceptionally high organic carbon burial. The study suggests that changes in atmospheric pressure systems and surface winds drive variations in precipitation and runoff patterns.
Scientists have found that macromolecular carbon in Martian meteorites is always associated with magnetite, a mineral catalyst for its formation. This association raises hopes that the meteorite's carbon complexes could be evidence of non-biological synthesis of organic molecules on Mars.
A research team led by Virginia Tech's Marr will use a van-mounted instrument system to measure air pollutant emissions in various locations. The project aims to improve understanding of air pollution and inform policy decisions.
Marine biogeochemists have shown that microbes degrading organic carbon respond differentially to temperature changes, affecting organic matter breakdown efficiency. This finding suggests that global climate change could influence the efficiency of organic carbon recycling and burial.
A team of researchers has solved a puzzle in climate research by explaining why micro-organisms break down carbon in soils at varying rates. The new theory predicts that an increase in climate temperatures will lead to more rapid carbon dioxide release and accelerated climate change.
Researchers analyze daily temperature ranges to explain global warming trends. A new seismic model reveals the cause of New Zealand's volcanism by tracking magma movement. Small robotic aircraft can now patrol the ocean, providing high-resolution oceanographic observations.
Researchers found that graphitic black carbon resists conversion to other forms, such as combining with oxygen to form carbon dioxide. This resistance affects carbon cycle calculations, leading to significant overestimates of burial of combustion-derived black carbon in marine sediments.
A study by Pace and colleagues found that 40-55% of lake plant production supports resident aquatic life, while 2250% of zooplankton is derived from terrestrial sources. The results suggest that aquatic food chains are supported not only by in-water production but also by organic matter from surrounding watersheds.
A new study reveals that a significant part of the aquatic food chain is supported by terrestrial organic matter originating on the shoreline. Aquatic plants produce organic carbon through photosynthesis, which supports fish and invertebrate populations.
Researchers found that children with mild asthma already show pathologic features of adult disease, including basement membrane thickening and airway eosinophilia. New AAT deficiency guidelines also aim to improve diagnosis and management by identifying specific risk factors for this hereditary disorder.
Researchers at Brookhaven National Laboratory have discovered an important intermediate step in the artificial photosynthesis process using robust transition metal complexes like rhenium. By studying these reactions over short and long timescales, they found that two energetic metal complexes are involved in activating one CO2 molecule.
Seyferth's research focuses on creating new molecules through the use of organometallic compounds. He has made significant contributions to the field of organometallic chemistry, including the development of methods for synthesizing complex compounds such as drugs and adhesives.
A recent MIT study suggests that irrigation pumping may increase or decrease arsenic levels in Bangladesh's drinking wells, with complex effects on groundwater chemistry. The researchers found that degradation of organic carbon by microbes mobilizes arsenic, but deeper wells may reduce arsenic concentrations in some areas.
Scientists have developed new methods to characterize diamonds, allowing them to link the stones' properties to their mine of origin. This study aims to shed light on plate tectonics, the Earth's formation, and processes deep in the Earth.
Researchers found that excessive ultraviolet radiation can harm plankton, which removes organic carbon from the ocean and contributes to the greenhouse effect. The study's findings have important implications for understanding the impact of climate change on marine ecosystems.
The study found a clear relationship between organic carbon and smectite clay minerals, suggesting that dissolved organic molecules are drawn into the crystal lattice where they are protected from oxidation. This process, known as adsorption, plays a crucial role in maintaining habitable conditions in the biosphere.
A team of researchers analyzed a rare, well-preserved meteorite found in Canada, revealing organic compounds with similarities to other known carbonaceous chondrites. The study suggests that the Tagish Lake Meteorite may represent an early stage in the evolution of complex carbon compounds in space.