Authors: Yu. S. Tuchkovenko, O. A. Tuchkovenko
Year: 2018
Issue: 21
Pages: 75-89
Abstract
The paper outlines the mathematical structure of the numerical mathematical model of water eutrophication. The model is based on the numerical non-stationary hydrothermodynamic model MECCA (Model for Estuarine and Coastal Circulation Assessment) supplemented with a chemical-biological modular unit designed in accordance with the principles of preparation of the water quality model RCA-HydroQual with some modifications introduced by the author. The chemical-biological unit of the model includes a description of the dynamics of the following hydroecological variables at a local point of space: biomass of phytoplankton, mineralization-resistant organic phosphorus in suspended (detrital) and dissolved fractions, labile organic phosphorus in suspended and dissolved fractions, dissolved mineral phosphorus, stable organic nitrogen in suspended and dissolved fractions, labile organic nitrogen in suspended and dissolved fractions, ammonium and nitrate nitrogen, suspended and dissolved fractions of organic carbon resistant to biochemical oxidation, suspended and dissolved fractions of labile organic carbon and water-dissolved oxygen. The paper presents results of calibration and verification of 1D version of the model for the case of the Tyligulskiy Liman (Estuary) in the northwestern part of the Black Sea. A conclusion is drawn that the model makes it possible to display the main features of the annual dynamics of hydroecological characteristics of the liman during phytoplankton vegetation season, in particular, the conditions determining the processes of primary production and biochemical oxidation of organic substance, regeneration of mineral forms of biogenic elements. Application of the model in order to assess the impact of deepening the ‘liman-sea’ connecting canal on the hydroecological characteristics of the Tyligulskiy Liman proved that intensification of water exchange with the sea through the canal will help to reduce phytoplankton production, concentration of organic substance in the water of the liman and, ultimately, will lead to improvement of its trophic status.
The model is expected to be further used to assess the effectiveness of various scenarios of managing the hydroecological regime of the limans of the north-western Black Sea region considering the changes of climatic conditions.
Tags: eutrophication of water; numerical modeling; the Black Sea; the Tyligulskiy Liman; евтрофікація вод; евтрофікація вод; Тилигульский лиман; Тилигульский лиман; чисельне моделювання; чисельне моделювання; Чорне море; Чорне море
Bibliography
- Tuchkovenko, Yu.S., Loboda, N.S. (2017). [Impact of the climate change on the strategy of water management of lagoons of the Northwestern Black Sea]. Tezy dopovidei Pershoho Vseukrainskoho hidrometeorolohichnoho zizdu z mizhnarodnoiu uchastiu [Procedings of the First All-
Ukrainian Hydrometeorological Congress with International Participation], 22-23 March. Odessa, pp. 312–313 (in Ukr.) - Tuchkovenko, Yu.S., Loboda, N.S. (Eds). (2014). Vodni resursy ta hidroekolohichnyi stan Tylihulskoho lymanu [Water resources and hydroecological conditions of the Tyligulskiy Liman Lagoon]. Odesa : TES Publ. (in Ukr.)
- Tuchkovenko, Yu. S., Bogatova, Yu.I., Tuchkovenko, O.A. (2015). [Hydrochemical regime of Tyligulskiy Liman in modern period]. Vìsnik Odesʹkogo deržavnogo ekologìčnogo unìversitetu [Bulletin of Odessa State Environmental University], 19, 126–133. (in Russ.)
- Hess, K.W. (2000). Mecca2 Program Documentation. NOAA Technical Report NOS CS 5, Silver Spring, MD.
- Ivanov, V.A., Tuchkovenko, Y.S. (2006). Prikladnoye matematicheskoe modelirovanie kachestva vod shelfovykh morskikh ekosistem [Applied Mathematical Water-Quality Modeling of Shelf Marine Ecosystems]. Marine Hydrophysical Institute of NASU, Sevastopol. (in Russ.)
- Tuchkovenko, Yu.S., Ivanov, V.A. (2007). [Modelling formation of quality of waters of the Northwestern part of the Black Sea]. Ekologicheskaya bezopasnost pribrezhnoy i shelfovoy zon i kompleksnoe ispolzovanie resursov shelfa [Ecological safety of coastal and the shelf zones and complex use of shelf resources], 15, 304–325. (in Russ.)
- Tuchkovenko, Y.S., Ivanov, V.A., Sapko, О.Y. (2011). Otsenka vliyaniya beregovykh antropogennykh istochnikov na kachestvo vod Odesskogo rayona severo-zapadnoy chasti Chernogo morya [Assessment of coastal anthropogenic sources impact on water quality in north-western part
of Black Sea near Odessa]. Marine Hydrophysical Institute of NASU and Odessa State Environmental University, Sevastopol: ECOSY-Hydrophysics Publ. (in Russ.) - HydroQual. (2004). User’s Guide for RCA (Release 3.0). Appendix A. Mahwah, New Jersey. Available at: https://production.wordpress.uconn.edu/swem/wpcontent/uploads/sites/1563/2013/03/RCA-Release-3.0-Rev.1.0.pdf (accessed 25.05.2018)
- Lyakhin, Yu.I. (1980). [On velocity of exchange of oxygen between the ocean and the atmosphere]. Okeanologiya [Oceanology], 18 (6), 1014-1020. (in Russ.)
- Cerco, Carl F. Cole, Thomas. (1995). User’s guide to the CE-QUAL-ICM three-dimensional eutrophication model: release version 1.0. U.S. Army Corps of Engineers, Waterways Experiment Station. Available at: http://acwc.sdp.sirsi.net/client/en_US/search/asset/1002903;
jsessionid=900370E4763DE3E4B9A81656131A4B43.enterprise-15000 (accessed 25.05.2018). - Straškraba, M., Gnauck, A. (1985). Developed in Environmental Modelling. Vol.8. Freshwater ecosystems.
Modelling and simulation. Amsterdam-Oxford – New York – Tokyo: Elsevier. - Moroz, M.F., Vodchits, N.N. (2007). Gidrotehnicheskie sooruzheniya [Hydrotechnical structures]. Brest State Technical University, Brest. (in Russ.)
- Dmytriiev, A.F., Khlapuk, M.M., Shuminskii, V.D. et al. (1999). Hidrotekhnichni sporudy [Hydrotechnical structures]. In Dmytriiev, A.F. (Ed). Rivne : Publ. of Rivne State Technical University. (in Ukr.)
- Loboda, N.S., Tuchkovenko, Yu.S., Khokhlov V.M. et al. (2014). [The choice of typical years for the Tyligulskiy estuary basin in the calculation of runoff under the global warming scenario M10]. Materialy Vseukrainskoi naukovo-praktaktychnoi konferentsii “Lymany pivnichno-zakhidnoho Prychornomoria : suchasnyi hidroekolohichnyi stan, problemy vodnoho ta ekolohichnoho menedzhmentu ta shliakhy yikh vyrishennia” [Proceedings of the All-Ukrainian Scientific and Practical Conference “Estuaries of the north-western Black Sea: modern hydroecological state, problems of water and environmental management
and ways of their solution”], 1-3 October, Odessa, pp. 28-30. (in Ukr.) - Tuchkovenko, Yu.S. (scient. chief). (2016). Modeliuvannia zminy hidroekolohichnykh umov v lymanakh pivnichnozakhidnoho
Prychornomoria v konteksti zmin klimatu u XXI stolitti na prykladi Tylihulskoho lymanu: Zvit pro NDR. DR №0115U004748 [Simulation of the change of hydroecological conditions in the estuaries of the Northwestern Black Sea in the context of the climate change inthe 21st century by the example of the Tyligulskiy Liman: Research report. SR 0115U004748]. Odessa State Environmental University. Odesa. (in Ukr.).