Results 41 to 50 of about 22,372 (223)

Biogeochemistry of sediment core PLUTUR6_BOXT21 [PDF]

, 2004
Biogeochemistry of sediment core ...
Jean-Marie Jouanneau (7886066), OMEX Project Members, OMEX Project Members (6966899), Jouanneau, Jean-Marie   +3 more
core   +1 more source

Quantifying Effects of OM–Cation Interactions on Mid‐Infrared FTIR Absorption Spectra of Polygalacturonic Acid

Journal of Plant Nutrition and Soil Science, EarlyView.
The composition of organic matter (OM) was explained by effects of OM–cation interactions using polygalacturonic acid (PGA) as model substance. These effects were analyzed by COO− absorption bands in mid‐FTIR spectra. The change in intensity and wavenumber ranges of COO− bands in FTIR was quantified.
Ruth H. Ellerbrock, Nisha Bhattarai, Horst H. Gerke   +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

Tenth international symposium on environmental biogeochemistry [PDF]

, 1992
The primary task of this Symposium on Environmental Biogeochemistry was to examine our current understanding of GLOBAL CHANGE AND THE BIOGEOCHEMISTRY OF RADIATIVE TRACE GASES.
Ehrlich, H. L.
core  

Biogeochemistry of sediment core PLG95B_04MULC [PDF]

, 2004
Biogeochemistry of sediment core ...
OMEX Project Members, Wim Helder (6964334), OMEX Project Members (6966899), Helder, Wim   +3 more
core   +1 more source

Carbon, Nitrogen, and Corresponding Stable Isotope Signatures Reveal Channel Banks as Major Sediment Sources in a Tropical Agricultural Watershed

Land Degradation &Development, EarlyView.
ABSTRACT Uncertainties about the applicability of δ13C and δ15N as tracers of sediment sources in tropical river basins highlight the need for more in‐depth investigations of these isotopes. This study therefore assessed the effectiveness of δ13C and δ15N signatures in discriminating sediment sources in an agricultural catchment in Northeast Brazil ...
Fábio Farias Amorim, Yuri Jacques Agra Bezerra da Silva, Rennan Cabral Nascimento, Ygor Jacques Agra Bezerra da Silva, Angelo Jamil Maia, Tales Tiecher, Jean Paolo Gomes Minella, Yusheng Zhang, Hari Ram Upadhayay, Simon Pulley, Adrian L. Collins   +10 more
wiley   +1 more source

Biogeochemistry: A introduction [PDF]

, 2011
The concept of biogeochemistry is about one hundred years old. It was first defined by the Russian scientist Vernadsky in 1926. At the beginning of the twentieth century, scientific disciplines divided themselves into many subdisciplines: specialization ...
Middelburg, J.J., Laane, R.W.P.M.
core   +2 more sources

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

Biogeochemistry of sediment core PLG95B_05MULC [PDF]

, 2004
Biogeochemistry of sediment core ...
OMEX Project Members, Wim Helder (6964334), OMEX Project Members (6966899), Helder, Wim   +3 more
core   +1 more source