Search Results - "SCHMIDT, MICHAEL W."

Persistence of soil organic matter as an ecosystem property by Schmidt, Michael W. I., Torn, Margaret S., Abiven, Samuel, Dittmar, Thorsten, Guggenberger, Georg, Janssens, Ivan A., Kleber, Markus, Kögel-Knabner, Ingrid, Lehmann, Johannes, Manning, David A. C., Nannipieri, Paolo, Rasse, Daniel P., Weiner, Steve, Trumbore, Susan E.

“…Soil carbon stability revisited The mechanisms underpinning soil carbon stability are complicated. The future response of soil carbon to climate change is…”
Get full text

Tropical forest soil carbon stocks do not increase despite 15 years of doubled litter inputs by Sayer, Emma J., Lopez-Sangil, Luis, Crawford, John A., Bréchet, Laëtitia M., Birkett, Ali J., Baxendale, Catherine, Castro, Biancolini, Rodtassana, Chadtip, Garnett, Mark H., Weiss, Lena, Schmidt, Michael W. I.

“…Soil organic carbon (SOC) dynamics represent a persisting uncertainty in our understanding of the global carbon cycle. SOC storage is strongly linked to plant…”
Get full text

Spin–Orbit Coupling Constants in Atoms and Ions of Transition Elements: Comparison of Effective Core Potentials, Model Core Potentials, and All-Electron Methods by Koseki, Shiro, Matsunaga, Nikita, Asada, Toshio, Schmidt, Michael W, Gordon, Mark S

“…The spin–orbit coupling constants (SOCC) in atoms and ions of the first- through third-row transition elements were calculated for the low-lying atomic states…”
Get full text

Transformation and stabilization of pyrogenic organic matter in a temperate forest field experiment by Singh, Nimisha, Abiven, Samuel, Maestrini, Bernardo, Bird, Jeffrey A., Torn, Margaret S., Schmidt, Michael W. I.

“…Pyrogenic organic matter (PyOM) decomposes on centennial timescale in soils, but the processes regulating its decay are poorly understood. We conducted one of…”
Get full text

Nitrogen deposition promotes the production of new fungal residues but retards the decomposition of old residues in forest soil fractions by Griepentrog, Marco, Bodé, Samuel, Boeckx, Pascal, Hagedorn, Frank, Heim, Alexander, Schmidt, Michael W. I.

“…Atmospheric nitrogen (N) deposition has frequently been observed to increase soil carbon (C) storage in forests, but the underlying mechanisms still remain…”
Get full text

Valence Virtual Orbitals: An Unambiguous ab Initio Quantification of the LUMO Concept by Schmidt, Michael W, Hull, Emily A, Windus, Theresa L

“…Many chemical concepts hinge on the notion of an orbital called the lowest unoccupied molecular orbital, or LUMO. This hypothetical orbital and the much more…”
Get full text

Climate warming and elevated CO2 alter peatland soil carbon sources and stability by Ofiti, Nicholas O. E., Schmidt, Michael W. I., Abiven, Samuel, Hanson, Paul J., Iversen, Colleen M., Wilson, Rachel M., Kostka, Joel E., Wiesenberg, Guido L. B., Malhotra, Avni

“…Peatlands are an important carbon (C) reservoir storing one-third of global soil organic carbon (SOC), but little is known about the fate of these C stocks…”
Get full text

Rapid loss of complex polymers and pyrogenic carbon in subsoils under whole-soil warming by Zosso, Cyrill U., Ofiti, Nicholas O. E., Torn, Margaret S., Wiesenberg, Guido L. B., Schmidt, Michael W. I.

“…Subsoils contain more than half of soil organic carbon (SOC) and are expected to experience rapid warming in the coming decades. Yet our understanding of the…”
Get full text

Belowground plant allocation regulates rice methane emissions from degraded peat soils by Sriskandarajah, Nijanthini, Wüst-Galley, Chloé, Heller, Sandra, Leifeld, Jens, Määttä, Tiia, Ouyang, Zutao, Runkle, Benjamin R. K., Schiedung, Marcus, Schmidt, Michael W. I., Tumber-Dávila, Shersingh Joseph, Malhotra, Avni

“…Carbon-rich peat soils have been drained and used extensively for agriculture throughout human history, leading to significant losses of their soil carbon. One…”
Get full text

Ab Initio Molecular Orbital Study of the First Four Si/C Alternately Substituted Annulenes by Kudo, Takako, Schmidt, Michael W, Matsunaga, Nikita

“…The ground and low-lying excited states of four alternating Si/C annulenes, H n Si n/2C n/2 with n = 4, 6, 8, and 10, have been investigated by ab initio…”
Get full text

Warming and elevated CO2 promote rapid incorporation and degradation of plant‐derived organic matter in an ombrotrophic peatland by Ofiti, Nicholas O. E., Solly, Emily F., Hanson, Paul J., Malhotra, Avni, Wiesenberg, Guido L. B., Schmidt, Michael W. I.

“…Rising temperatures have the potential to directly affect carbon cycling in peatlands by enhancing organic matter (OM) decomposition, contributing to the…”
Get full text

Nine years of warming and nitrogen addition in the Tibetan grassland promoted loss of soil organic carbon but did not alter the bulk change in chemical structure by Sun, Huimin, Schmidt, Michael W. I, Li, Jintao, Li, Jinquan, Liu, Xiang, Ofiti, Nicholas O. E, Zhou, Shurong, Nie, Ming

“…Nitrogen (N) and warming effects on ecosystem carbon (C) budgets and stabilization are critical to understand as C sequestration is considered as a mechanism…”
Get full text

What on Earth Have We Been Burning? Deciphering Sedimentary Records of Pyrogenic Carbon by Hanke, Ulrich M., Reddy, Christopher M., Braun, Ana L. L., Coppola, Alysha I., Haghipour, Negar, McIntyre, Cameron P., Wacker, Lukas, Xu, Li, McNichol, Ann P., Abiven, Samuel, Schmidt, Michael W. I., Eglinton, Timothy I.

“…Humans have interacted with fire for thousands of years, yet the utilization of fossil fuels marked the beginning of a new era. Ubiquitous in the environment,…”
Get full text

F-Box-Directed CRL Complex Assembly and Regulation by the CSN and CAND1 by Schmidt, Michael W., McQuary, Philip R., Wee, Susan, Hofmann, Kay, Wolf, Dieter A.

“…The COP9 signalosome (CSN) is thought to maintain the stability of cullin-RING ubiquitin ligases (CRL) by limiting the autocatalytic destruction of substrate…”
Get full text

Black carbon in soils and sediments: Analysis, distribution, implications, and current challenges by Schmidt, Michael W. I., Noack, Angela G.

“…This review highlights the ubiquity of black carbon (BC) produced by incomplete combustion of plant material and fossil fuels in peats, soils, and lacustrine…”
Get full text

Marked isotopic variability within and between the Amazon River and marine dissolved black carbon pools by Coppola, Alysha I., Seidel, Michael, Ward, Nicholas D., Viviroli, Daniel, Nascimento, Gabriela S., Haghipour, Negar, Revels, Brandi N., Abiven, Samuel, Jones, Matthew W., Richey, Jeffrey E., Eglinton, Timothy I., Dittmar, Thorsten, Schmidt, Michael W. I.

“…Riverine dissolved organic carbon (DOC) contains charcoal byproducts, termed black carbon (BC). To determine the significance of BC as a sink of atmospheric CO…”
Get full text

Electronic Structure Analysis of the Ground-State Potential Energy Curve of Be2 by Schmidt, Michael W, Ivanic, Joseph, Ruedenberg, Klaus

“…The recently measured ground-state potential energy curve of the diatomic beryllium molecule is reproduced to within an accuracy of 20 cm−1 by a full valence…”
Get full text

Improved assessment of pyrogenic carbon quantity and quality in environmental samples by high-performance liquid chromatography by Wiedemeier, Daniel B., Hilf, Michael D., Smittenberg, Rienk H., Haberle, Simon G., Schmidt, Michael W.I.

“…•A molecular marker method to quantify pyrogenic carbon (PyC) was improved.•Required sample amounts decreased while sample throughput increased.•Better PyC…”
Get full text

Why does electron sharing lead to covalent bonding? A variational analysis by Ruedenberg, Klaus, Schmidt, Michael W.

“…Ground state energy differences between related systems can be elucidated by a comparative variational analysis of the energy functional, in which the concepts…”
Get full text

Solvent-Induced Shifts in Electronic Spectra of Uracil by DeFusco, Albert, Ivanic, Joseph, Schmidt, Michael W, Gordon, Mark S

“…Highly accurate excitation spectra are predicted for the low-lying n−π* and π−π* states of uracil for both the gas phase and in water employing the complete…”
Get full text