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Association between soil organic carbon and calcium in acidic grassland soils from Point Reyes National Seashore, CA
Organo-mineral and organo-metal associations play an important role in the retention and accumulation of soil organic carbon (SOC). Recent studies...
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The effect of iron on the preservation of organic carbon in marine sediments and its implications for carbon sequestration
Marine sediments are the most significant reservoir of organic carbon (OC) in Earth’s surface system. Iron, a crucial component of the marine...
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Microphysical properties of atmospheric soot and organic particles: measurements, modeling, and impacts
Atmospheric soot and organic particles from fossil fuel combustion and biomass burning modify Earth’s climate through their interactions with solar...
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A Comparative Study of the Humic Substances and Organic Matter in Physical Fractions of Haplic Chernozem under Contrasting Land Uses
AbstractThe goal of this work is to find out whether the chemical fractions isolated by traditional alkaline extraction are associated with any...
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Development of energetic and enzymatic limitations on microbial carbon cycling in soils
Soil organic carbon (SOC) constitutes an important reservoir in the global carbon cycle that is vulnerable to transformation and loss from land use...
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A biomimetic experimental study of magnesium ion mineralization in Mg-enriched aragonite
In this work, we test the hypothesis that the Mg 2+ content in biogenic aragonite has a systematic relationship with biomolecules. A series of...
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Divergent roles of iron and aluminum in sediment organic matter association at the terrestrial–aquatic interface
Organic matter (OM) can be protected from abiotic and biotic breakdown via its association with iron (Fe) and aluminum (Al) in both terrestrial and...
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Persistent organic matter in oxic subseafloor sediment
Nearly half of the global seafloor is overlain by sediment oxygenated to the basement. Yet, despite the availability of oxygen to fuel aerobic...
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Humic Substances: Hypotheses and Reality (a Review)
AbstractThe term humic substances (HS) refers to a group of heterogeneous, dark-colored polydisperse substances found in soils, peats, natural...
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Impacts of hydrous manganese oxide on the retention and lability of dissolved organic matter
Minerals constitute a primary ecosystem control on organic C decomposition in soils, and therefore on greenhouse gas fluxes to the atmosphere....
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Extreme Pedology: Elements of Theory and Methodological Approaches
AbstractExtreme environmental conditions that occur in Arctic, Antarctic, high mountains, extremely arid regions, as well as in toxic or...
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Improving understanding of soil organic matter dynamics by triangulating theories, measurements, and models
Soil organic matter (SOM) turnover increasingly is conceptualized as a tension between accessibility to microorganisms and protection from...
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Organochlorine compounds and the biogeochemical cycle of chlorine in soils: A review
Chloride ions in soil may interact with soil organic matter and form organochlorine compounds in situ. The biotic chlorination of soil organic...
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What Is the Ultimate Ancestor? Evidence from Fossils and Gene Analyses
The current results of science from two research fields approaching the origin of life are reviewed. We will see how close we are to identifying the... -
Fractionation of Dissolved Organic Matter by Co-Precipitation with Iron: Effects of Composition
Interactions between dissolved organic matter (DOM) and different physical-chemical forms of iron (Fe) represent important biogeochemical processes...
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Thermodynamically controlled preservation of organic carbon in floodplains
Organic matter decomposition in soils and terrestrial sediments has a prominent role in the global carbon cycle. Carbon stocks in anoxic...
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The energetic and chemical signatures of persistent soil organic matter
A large fraction of soil organic matter (OM) resists decomposition over decades to centuries as indicated by long radiocarbon residence times, but...
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Airborne soil organic particles generated by precipitation
Airborne organic particles play a critical role in Earth’s climate
1 , public health2 , air quality3 , and hydrological and carbon cycles4 . However,... -
Geochemical drivers of organic matter decomposition in arctic tundra soils
Climate change is warming tundra ecosystems in the Arctic, resulting in the decomposition of previously-frozen soil organic matter (SOM) and release...
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Stable carbon compounds in soils: Their origin and functions
The sources, formation conditions, and composition of stable carbon compounds in soils are considered in this review. It has been shown that the...