Ecological Safety of Coastal and Shelf Zones of Sea Ecological Safety of Coastal and Shelf Zones of Sea 2413-5577 20230106 Research Article Atmospheric Input of Silica in Crimea and Factors Affecting it Varenik A. V. alla.varenik@mhi-ras.ru Myslina M. A. myslina@mhi-ras.ru Tarasevich D. V. ledi_di2020@bk.ru Marine Hydrophysical Institute of RAS Sevastopol Russia 24 03 2023 2023 1 77 90 20 12 2022 01 02 2023 25 01 2023 Copyright © 2023, A. V. Varenik, M. A. Myslina, D. V. Tarasevich 2023 A. V. Varenik, M. A. Myslina, D. V. Tarasevich https://creativecommons.org/licenses/by-nc/4.0/ https://ecological-safety.ru/en/repository/issues/2023/01/06/

Silica is one of the main nutrients (N, P, Si) and is a part of a large number of natural minerals, so it is constantly present in natural waters. It is mainly present as salts of silicic acid (silica). Atmospheric precipitation can be an important additional source of silica in the ecosystem. The purpose of this work is to estimate the silica content in the atmospheric precipitation based on long-term data, analyze the spatial and temporal variability of this content, and identify possible factors influencing the atmospheric silica input. The paper presents the results of continuous monitoring of silica input with the atmospheric precipitation in the Crimean coastal region in 2015-2021. Precipitation samples were collected in Sevastopol and Katsiveli in two types of samplers: a permanently open one to collect total (dry + wet) atmospheric precipitation and a wet-only one. It is shown that in the inter-annual dynamics of silica flux with the atmospheric precipitation in the both sampling points, the maximum input amount of this nutrient was determined in 2017-2018. The main factors influencing the amount of silica input with the atmospheric precipitation were determined. One of the main factors influencing the silica concentration in precipitation is the intensity of dust transport.

 silica sampling atmospheric precipitation Crimea dust atmospheric precipitation long-term changes The work was carried out under state assignment of FSBSI FRC MHI of RAS on the subject FNNN-2021-0005 "Coastal research".

About the authors:

Alla V. Varenik, Senior Research Associate, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russian Federation), Ph.D. (Geogr.), ResearcherID: H-1880-2014, alla.varenik@mhi-ras.ru

Maria A. Myslina, Junior Research Associate, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russian Federation), ORCID ID: 0000-0002-0054-0379, myslina@mhi-ras.ru

Diana V. Tarasevich, Research Engineer, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russian Federation), ORCID ID: 0000-0003-4893-9685, ledi_di2020@bk.ru

Contribution of the authors:

Alla V. Varenik – general scientific supervision of the study, statement of study goals and objectives, qualitative and quantitative analysis of the results and their interpretation, discussion of the results, preparation of graphic materials, drawing conclusions

Maria A. Myslina – review of the related literature, qualitative and quantitative analysis of the results and their interpretation

Diana V. Tarasevich – review of the related literature, qualitative and quantitative analysis of the results and their interpretation

All the authors have read and approved the final manuscript.

Article text not included.

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