Articles | Volume 19, issue 24
https://doi.org/10.5194/bg-19-5729-2022
https://doi.org/10.5194/bg-19-5729-2022
Research article
 | 
15 Dec 2022
Research article |  | 15 Dec 2022

Interdisciplinary strategy to assess the impact of meteorological variables on the biochemical composition of the rain and the dynamics of a small eutrophic lake under rain forcing

Fanny Noirmain, Jean-Luc Baray, Frédéric Tridon, Philippe Cacault, Hermine Billard, Guillaume Voyard, Joël Van Baelen, and Delphine Latour

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Cited articles

Amato, P., Joly, M., Besaury, L., Oudart, A., Taib, N., Moné, A. I., Deguillaume, L., Delort, A.-M., and Debroas, D.: Active microorganisms thrive among extremely diverse communities in cloud water, PLOS ONE, 12, e0182869, https://doi.org/10.1371/journal.pone.0182869, 2017. 
Bannister, R. N., Chipilski, H. G., and Martinez-Alvarado, O.: Techniques and challenges in the assimilation of atmospheric water observations for numerical weather prediction towards convective scales, Q. J. R. Meteor. Soc., 146, 1–48, https://doi.org/10.1002/qj.3652, 2020. 
Barbiero, R. P., James, W. F., and Barko, J. W.: The effects of disturbance events on phytoplankton community structure in a small temperate reservoir: Effects of disturbance on phytoplankton, Freshwater Biol., 42, 503–512, https://doi.org/10.1046/j.1365-2427.1999.00491.x, 1999. 
Bertrand, G., Celle-Jeanton, H., Laj, P., Rangognio, J., and Chazot, G.: Rainfall chemistry: long range transport versus below cloud scavenging. A two-year study at an inland station (Opme, France), J. Atmos. Chem., 60, 253–271, https://doi.org/10.1007/s10874-009-9120-y, 2008. 
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We present a study linking rain, meteorology, and mountain lake phytoplankton dynamics on the basis of a case study at Aydat (France) in September 2020. The air mass origin mainly influences the rain chemical composition, which depends on the type of rain, convective or stratiform. Our results also highlighted a non-negligible presence of photosynthetic cells in rainwater. The impact of the atmospheric forcing on the lake could play a key role in phytoplankton dynamics in the temperate zone.
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