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Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment of an acidic bog lake, Lake Grosse Fuchskuhle
Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment an acidic bog lake Lake Grosse Fuchskuhle
2014/4/16
Lake Grosse Fuchskuhle is an acidic bog lake, which develops an anoxic hypolimnion during the summer season, so that sediment organic matter is degraded anaerobically to CH4and CO2. The d13 C values o...
Regulation of the nitrogen biogeochemistry of mountain lakes by subsidies of terrestrial dissolved organic matter and the implications for climate studies
the nitrogen biogeochemistry mountain lakes subsidies terrestrial dissolved organic matter the implications for climate
2014/4/16
table isotopes of nitrogen (N) were analyzed in modern sediments of mountain lakes, dissolved organic matter(DOM), and sediment cores spanning the past 12,000 yr to test the hypothesis that spatial an...
Production of chromophoric dissolved organic matter by marine phytoplankton
chromophoric dissolved organic matter marine phytoplankton
2014/4/16
Incubation experiments with axenic cultures of four common phytoplankton species of the generaChaetoceros,Skeletonema, Prorocentrum, and Micromonaswere performed to test for the production of fluoresc...
Measuring and modeling continuous quality distributions of soil organic matter
continuous quality distributions soil organic matter
2010/1/21
An understanding of the dynamics of soil organic matter (SOM) is important for our ability to develop management practices that preserve soil quality and sequester carbon. Most SOM decomposition model...
Measuring and modeling continuous quality distributions of soil organic matter
Measuring modeling continuous quality distributions soil organic matter
2010/1/7
An understanding of the dynamics of soil organic matter (SOM) is important for our ability to develop management practices that preserve soil quality and sequester carbon. Most SOM decomposition model...
Dissolved Organic Matter in the Ocean: A Controversy Stimulates New Insights
Carbon emissions atmosphere ocean dissolved organic matter carbon sequestration Marine geochemistry
2015/7/6
Containing as much carbon as the atmosphere, marine dissolved organic matter is one of Earth's major carbon reservoirs. With invigoration of scientific inquiries into the global carbon cycle, our igno...
Organic matter sedimentation in the western Barents Sea region:Terrestrial and marine contribution based on isotopic composition and organic nitrogen content
Organic matter sedimentation western Barents Sea region Terrestrial and marine contribution
2009/12/2
Here, we present bulk organic geochemical data from a spatial grid of surface samples from the western Barents Sea region. The results show that the distribution of organic carbon in surface sediments...
Nitrous oxide production in boreal soils with variable organic matter content at low temperature – snow manipulation experiment
Nitrous oxide production boreal soils organic matter content low temperature
2010/1/21
Agricultural soils are the most important sources for the greenhouse gas nitrous oxide (N2O), which is produced and emitted from soils also at low temperatures. The processes behind emissions at low t...
The Paths of the Suspended Particulate Inorganic and Organic Matter in a Small Urban Estuary:The Aarhus Harbour Estuary
Inorganic and Organic Matter Urban Estuary Aarhus Harbour Estuary
2009/10/27
The nverine supply of suspended inorganic and organic sediment, its temporal
and spatial distribution and its exchange with the bay, were estimated for an
urban estuary (Aarhus Harbour Estuary, Denm...
Optical Properties of Dissolved Organic Matter in Finnish and Estonian Lakes
Optical Properties Dissolved Organic Matter Finnish and Estonian Lakes
2009/10/22
The main objective of the present study is to test various methods for describing
the absorption spectra of coloured dissolved organic matter (CDOM) and to
determine the numerical values of some opt...
Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network
Landscape scale patterns natural organic matter stream network
2009/9/11
This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal ...
Can pressure promote hydrocarbon generation from organic matter?—New experimental proof
pressure pyrolysis natural gas carbon and hydrogen isotopes
2017/8/9
In order to investigate if pressure can increase the yield of the yield of methane and gaseous hydrocarbon as a whole, both anhydrous and hydrous isothermal pyrolysis experiments were performed on Fus...
Evidence for surface organic matter modulation of air-sea CO2 gas exchange
Evidence surface organic matter modulation air-sea CO2 gas exchange
2010/1/20
Air-sea CO2 exchange depends on the air-sea CO2 gradient and the gas transfer velocity (k), computed as a function of wind speed. Large discrepancies among relationships predicting k from wind suggest...
Assessing the biodegradability of terrestrially-derived organic matter in Scottish sea loch sediments
organic matter Scottish sea loch sediments
2009/5/4
Lignin oxidation products, oxygen uptake rates, molar organic carbon to nitrogen (OC/N) ratio (from bulk elemental analysis) and Rp values (from loss on ignition experiments, the ratio of the refracto...
Contrasting the influences of stream inputs and landscape position on bacterioplankton community structure and dissolved organic matter composition in high-elevation lake chains
Contrasting landscape position
2014/4/18
We examined bacterioplankton community composition (BCC; using polymerase chain reaction-based
phylogenetic fingerprinting) and the composition of dissolved organic matter (DOM; using scanning fluoro...