Phytoplankton Dynamics and Biogeochemistry: Model Studies
The seasonal dynamics of the NE Black Sea phytoplankton follow the following pattern: small diatoms (spring) → coccolithophorid <i>Emiliania huxleyi</i> (late spring–early summer) → large diatoms (summer). Our hypothesis states that nitrogen and phosphorus concentrations regulate the sea...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/1/178 |
| _version_ | 1797343250586009600 |
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| author | Vladimir Silkin Alexander Abakumov Nikolay Esin Larisa Pautova Anna Lifanchuk Alexey Fedorov |
| author_facet | Vladimir Silkin Alexander Abakumov Nikolay Esin Larisa Pautova Anna Lifanchuk Alexey Fedorov |
| author_sort | Vladimir Silkin |
| collection | DOAJ |
| description | The seasonal dynamics of the NE Black Sea phytoplankton follow the following pattern: small diatoms (spring) → coccolithophorid <i>Emiliania huxleyi</i> (late spring–early summer) → large diatoms (summer). Our hypothesis states that nitrogen and phosphorus concentrations regulate the seasonal phytoplankton dynamics. A minimum number of parameters is enough to understand the mechanisms of dominant species change. Based on the concept of intracellular regulation, the following parameters were evaluated: the minimum nitrogen and phosphorus quotas; half-saturation constants for nitrogen and phosphorus uptake; the maximum specific growth rate of the dominant phytoplankton species. Computational experiments on the model show the following: (1) in spring, a species with a high maximum specific growth rate becomes dominant; (2) in late spring and early summer, a species with a low minimum nitrogen quota and a low half-saturation constant for nitrogen uptake is observed; (3) in summer, a low minimum phosphorus quota and a low half-saturation constant for phosphorus uptake allow the species to become dominant. |
| first_indexed | 2024-03-08T10:45:03Z |
| format | Article |
| id | doaj.art-22c03b4db2be4122b88d2e69c9ab4c71 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-08T10:45:03Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-22c03b4db2be4122b88d2e69c9ab4c712024-01-26T17:17:44ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-01-0112117810.3390/jmse12010178Phytoplankton Dynamics and Biogeochemistry: Model StudiesVladimir Silkin0Alexander Abakumov1Nikolay Esin2Larisa Pautova3Anna Lifanchuk4Alexey Fedorov5Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, RussiaInstitute of Automation and Control Processes, Far Eastern Branch RAS, Vladivostok 690041, RussiaShirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, RussiaShirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, RussiaShirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, RussiaShirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, RussiaThe seasonal dynamics of the NE Black Sea phytoplankton follow the following pattern: small diatoms (spring) → coccolithophorid <i>Emiliania huxleyi</i> (late spring–early summer) → large diatoms (summer). Our hypothesis states that nitrogen and phosphorus concentrations regulate the seasonal phytoplankton dynamics. A minimum number of parameters is enough to understand the mechanisms of dominant species change. Based on the concept of intracellular regulation, the following parameters were evaluated: the minimum nitrogen and phosphorus quotas; half-saturation constants for nitrogen and phosphorus uptake; the maximum specific growth rate of the dominant phytoplankton species. Computational experiments on the model show the following: (1) in spring, a species with a high maximum specific growth rate becomes dominant; (2) in late spring and early summer, a species with a low minimum nitrogen quota and a low half-saturation constant for nitrogen uptake is observed; (3) in summer, a low minimum phosphorus quota and a low half-saturation constant for phosphorus uptake allow the species to become dominant.https://www.mdpi.com/2077-1312/12/1/178phytoplanktonbiogeochemistryseasonal dynamicmodeldiatomscoccolithophores |
| spellingShingle | Vladimir Silkin Alexander Abakumov Nikolay Esin Larisa Pautova Anna Lifanchuk Alexey Fedorov Phytoplankton Dynamics and Biogeochemistry: Model Studies Journal of Marine Science and Engineering phytoplankton biogeochemistry seasonal dynamic model diatoms coccolithophores |
| title | Phytoplankton Dynamics and Biogeochemistry: Model Studies |
| title_full | Phytoplankton Dynamics and Biogeochemistry: Model Studies |
| title_fullStr | Phytoplankton Dynamics and Biogeochemistry: Model Studies |
| title_full_unstemmed | Phytoplankton Dynamics and Biogeochemistry: Model Studies |
| title_short | Phytoplankton Dynamics and Biogeochemistry: Model Studies |
| title_sort | phytoplankton dynamics and biogeochemistry model studies |
| topic | phytoplankton biogeochemistry seasonal dynamic model diatoms coccolithophores |
| url | https://www.mdpi.com/2077-1312/12/1/178 |
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