Nitrogen Deposition Weakens Soil Carbon Control of Nitrogen Dynamics Across the Contiguous United States.

Anthropogenic nitrogen (N) deposition is unequally distributed across space and time, with inputs to terrestrial ecosystems impacted by industry regulations and variations in human activity. Soil carbon (C) content normally controls the fraction of mineralized N that is nitrified (ƒ), affecting N bioavailability for plants and microbes. However, it is unknown whether N deposition has modified the relationships among soil C, net N mineralization, and net nitrification.

From Ridge 2 Reef: An interdisciplinary model for training the next generation of environmental problem solvers.

Regional and global environmental challenges have become increasingly complex and require broader solutions than a single discipline can provide. Although there is a growing need for interdisciplinary research, many graduate education programs still train students within the confines of a particular discipline or specialty. The Ridge 2 Reef research traineeship program at the University of California, Irvine, aimed to provide transferable and interdisciplinary skill training to prepare graduate students from different disciplines to address current and future environmental challenges.

Helium Nanodroplet Infrared Spectroscopic Studies of CH and CH.

In this work, CH cations were formed in helium droplets and investigated with infrared laser spectroscopy. The observed infrared bands are assigned to the C isomer of the CH cation. The rotational structure of the bands remains unresolved, indicating a factor of 3 or larger decrease in the rotational constants in helium nanodroplets.