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   https://doi.org/10.1111/ele.70015  

   Cheaib, Alissar; Waring, Elizabeth_F; McNellis, Risa; Perkowski, Evan_A; Martina, Jason_P; Seabloom, Eric_W; Borer, Elizabeth_T; Wilfahrt, Peter_A; Dong, Ning; Prentice, Iain_Colin; et al (January 2025, Ecology Letters)

   ABSTRACT Accurately representing the relationships between nitrogen supply and photosynthesis is crucial for reliably predicting carbon–nitrogen cycle coupling in Earth System Models (ESMs). Most ESMs assume positive correlations amongst soil nitrogen supply, leaf nitrogen content, and photosynthetic capacity. However, leaf photosynthetic nitrogen demand may influence the leaf nitrogen response to soil nitrogen supply; thus, responses to nitrogen supply are expected to be the largest in environments where demand is the greatest. Using a nutrient addition experiment replicated across 26 sites spanning four continents, we demonstrated that climate variables were stronger predictors of leaf nitrogen content than soil nutrient supply. Leaf nitrogen increased more strongly with soil nitrogen supply in regions with the highest theoretical leaf nitrogen demand, increasing more in colder and drier environments than warmer and wetter environments. Thus, leaf nitrogen responses to nitrogen supply are primarily influenced by climatic gradients in photosynthetic nitrogen demand, an insight that could improve ESM predictions. 

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2. Nitrogen cycling in tropical Atlantic Forest differing in exposure to urban atmospheric nitrogen deposition

   https://doi.org/10.1007/s11104-017-3421-8  

   Ponette-González, A. G.; Perroni, Y.; Weathers, K. C.; de Souza, P. A.; García-Oliva, F.; de Mello, W. Z. (September 2017, Plant and Soil)
3. Thermoluminescence of nitrogen–neon and nitrogen–argon nanoclusters immersed in superfluid helium

   https://doi.org/10.1063/1.5111301  

   Meraki, Adil; McColgan, Patrick T.; Sheludiakov, S.; Lee, David M.; Khmelenko, Vladimir V. (July 2019, Low Temperature Physics)
4. Enhanced luminescence of oxygen atoms and nitrogen molecules in nitrogen–krypton nanoclusters

   https://doi.org/10.1063/10.0036201  

   Korostyshevskyi, O; Wetzel, C K; Lee, D M; Khmelenko, V V (April 2025, Low Temperature Physics)

   We studied luminescence accompanied by an injection of nitrogen–krypton–helium gas mixtures after passing radiofrequency discharge into dense cold helium gas. In the cold helium gas N2–Kr nanoclusters were formed, with a core of Kr atoms and N2 molecules on the surface. Atomic nitrogen and oxygen resided in the N2 surface layers. When the temperature in the observation zone was in the range of 20–36 K, we observed enhanced emission of oxygen atom β-group and molecular nitrogen Vegard–Kaplan bands from N2–Kr nanoclusters. At these temperatures, nitrogen atoms efficiently recombine on the surface of nanoclusters with the formation of exited nitrogen molecules, leading to enhanced emission of Vegard–Kaplan bands. Simultaneously, the energy transfer from exited nitrogen molecules to the oxygen atoms enhanced O atom β-group emission. 

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5. Nitrogen diffusion in silicate minerals, with implications for nitrogen transport and cycling in the lithosphere

   https://doi.org/10.1016/j.chemgeo.2019.04.006  

   Watson, E.B.; Cherniak, D.J.; Drexler, M.; Hervig, R.L.; Schaller, M.F. (June 2019, Chemical Geology)