Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas
The gradients of hydrological, hydrophysical, and hydrochemical conditions form the transition zones in river mouth areas. These areas are considered ecotones in the presence of the edge effect. Our research aimed to identify the main patterns in the structural organization of zooplankton communitie...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/1424-2818/15/2/199 |
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| author | Vyacheslav Zhikharev Dmitry Gavrilko Ivan Kudrin Ekaterina Vodeneeva Oksana Erina Maria Tereshina Galina Shurganova |
| author_facet | Vyacheslav Zhikharev Dmitry Gavrilko Ivan Kudrin Ekaterina Vodeneeva Oksana Erina Maria Tereshina Galina Shurganova |
| author_sort | Vyacheslav Zhikharev |
| collection | DOAJ |
| description | The gradients of hydrological, hydrophysical, and hydrochemical conditions form the transition zones in river mouth areas. These areas are considered ecotones in the presence of the edge effect. Our research aimed to identify the main patterns in the structural organization of zooplankton communities in different types of river mouth areas in lowland reservoir tributaries within the Middle Volga basin. A cluster analysis was performed to structure and determine the zooplankton communities. The identified zooplankton communities were characterized by the noticeable heterogeneity in the species structure. We analyzed the spatial distribution of the structural indicators of zooplankton communities and, on the basis of RDA, determined the factors that significantly affect the organization of the ecotone community. An ecotone was found in all types of river mouth areas where the highest density, biomass, diversity, species, and functional richness of zooplankton were noted, as compared to bordering zooplankton communities. As the morphological structure of the mouth areas became more complex, the values of the main structural parameters of zooplankton communities increased. It was demonstrated that conditions in the ecotones are favorable to the development of zooplankton alien species. The major factors determining the species structure of the ecotone zooplankton community were water electrical conductivity (R<sup>2</sup> = 21.07%, <i>p</i>-value = 0.001), dissolved oxygen content (R<sup>2</sup> = 10.33%, <i>p</i>-value = 0.003), and water transparency (R<sup>2</sup> = 9.77 %, <i>p</i>-value = 0.001). |
| first_indexed | 2024-03-11T08:56:14Z |
| format | Article |
| id | doaj.art-bccdff6c30114b51b930b75000385991 |
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| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-11T08:56:14Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj.art-bccdff6c30114b51b930b750003859912023-11-16T20:04:27ZengMDPI AGDiversity1424-28182023-02-0115219910.3390/d15020199Structural Organization of Zooplankton Communities in Different Types of River Mouth AreasVyacheslav Zhikharev0Dmitry Gavrilko1Ivan Kudrin2Ekaterina Vodeneeva3Oksana Erina4Maria Tereshina5Galina Shurganova6Laboratory of Water Ecosystems, Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University, 603022 Nizhny Novgorod, RussiaLaboratory of Water Ecosystems, Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University, 603022 Nizhny Novgorod, RussiaLaboratory of Water Ecosystems, Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University, 603022 Nizhny Novgorod, RussiaLaboratory of Water Ecosystems, Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University, 603022 Nizhny Novgorod, RussiaDepartment of Hydrology, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, RussiaDepartment of Hydrology, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, RussiaLaboratory of Water Ecosystems, Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University, 603022 Nizhny Novgorod, RussiaThe gradients of hydrological, hydrophysical, and hydrochemical conditions form the transition zones in river mouth areas. These areas are considered ecotones in the presence of the edge effect. Our research aimed to identify the main patterns in the structural organization of zooplankton communities in different types of river mouth areas in lowland reservoir tributaries within the Middle Volga basin. A cluster analysis was performed to structure and determine the zooplankton communities. The identified zooplankton communities were characterized by the noticeable heterogeneity in the species structure. We analyzed the spatial distribution of the structural indicators of zooplankton communities and, on the basis of RDA, determined the factors that significantly affect the organization of the ecotone community. An ecotone was found in all types of river mouth areas where the highest density, biomass, diversity, species, and functional richness of zooplankton were noted, as compared to bordering zooplankton communities. As the morphological structure of the mouth areas became more complex, the values of the main structural parameters of zooplankton communities increased. It was demonstrated that conditions in the ecotones are favorable to the development of zooplankton alien species. The major factors determining the species structure of the ecotone zooplankton community were water electrical conductivity (R<sup>2</sup> = 21.07%, <i>p</i>-value = 0.001), dissolved oxygen content (R<sup>2</sup> = 10.33%, <i>p</i>-value = 0.003), and water transparency (R<sup>2</sup> = 9.77 %, <i>p</i>-value = 0.001).https://www.mdpi.com/1424-2818/15/2/199zooplanktonmouth areasdiversityspecies structureecotoneMiddle Volga |
| spellingShingle | Vyacheslav Zhikharev Dmitry Gavrilko Ivan Kudrin Ekaterina Vodeneeva Oksana Erina Maria Tereshina Galina Shurganova Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas Diversity zooplankton mouth areas diversity species structure ecotone Middle Volga |
| title | Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas |
| title_full | Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas |
| title_fullStr | Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas |
| title_full_unstemmed | Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas |
| title_short | Structural Organization of Zooplankton Communities in Different Types of River Mouth Areas |
| title_sort | structural organization of zooplankton communities in different types of river mouth areas |
| topic | zooplankton mouth areas diversity species structure ecotone Middle Volga |
| url | https://www.mdpi.com/1424-2818/15/2/199 |
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