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Spring comes earlier but not equally among species.
Nat Ecol Evol
January 2025
Biological Science, Florida State University, Tallahassee, FL, USA.
Climate displaces deposition as dominant driver of dissolved organic carbon concentrations in historically acidified lakes.
Biogeochemistry
December 2024
Department of Natural Resources and the Environment, University of New Hampshire, 56 College Road, Durham, NH USA.
Unlabelled: Climate and atmospheric deposition interact with watershed properties to drive dissolved organic carbon (DOC) concentrations in lakes. Because drivers of DOC concentration are inter-related and interact, it is challenging to assign a single dominant driver to changes in lake DOC concentration across spatiotemporal scales. Leveraging forty years of data across sixteen lakes, we used structural equation modeling to show that the impact of climate, as moderated by watershed characteristics, has become more dominant in recent decades, superseding the influence of sulfate deposition that was observed in the 1980s.
View Article and Find Full Text PDFFemtosecond Raman-induced Kerr effect spectroscopic study of the intermolecular dynamics in aqueous solutions of imidazolium hydrochloride, imidazole, sodium triazolide, and triazole: concentration dependence.
Anal Sci
November 2024
Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-Ku, Chiba, 263-8522, Japan.
In this study, we employed femtosecond Raman-induced Kerr effect spectroscopy to analyze the concentration-dependent intermolecular dynamics in positively or negatively charged aromatics and their neutral analogous aromatics (imidazolium hydrochloride (ImHCl), imidazole (Im), sodium triazolide (NaTr), and triazole (Tr)) in aqueous solutions at 293 K. We also measured their liquid properties, such as density, viscosity, and surface tension, at 293 K, and compared them with their dynamic properties. Furthermore, we performed the quantum chemistry calculations of the target aromatics and some clusters to elucidate their optimized structures, interaction energies, charge populations, and Raman-active normal modes.
View Article and Find Full Text PDFAssessing the long-term trend of spring discharge in a climate change hotspot area.
Sci Total Environ
December 2024
Alma Mater Studiorum - Università di Bologna, Bologna, Italy.
Global warming affects atmospheric and oceanic energy budgets, modifying the Earth's water cycle. The Mediterranean region is a critical zone for climate change due to a decrease in recharge and an increase in the frequency and severity of droughts over recent decades. While the impacts of possible emissions scenarios on surface water have been extensively studied, the effects on groundwater discharge remain uncertain at both global and local scales.
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