scholarly journals Biogeochemical hotspots: Role of small water bodies in landscape nutrient processing

2017 ◽  
Vol 53 (6) ◽  
pp. 5038-5056 ◽  
Author(s):  
Frederick Y. Cheng ◽  
Nandita B. Basu
Keyword(s):  
Water Bodies ◽  
Small Water ◽  
Nutrient Processing ◽  
Biogeochemical Hotspots ◽  
Small Water Bodies

The role of aquatic macrophytes in microhabitatual transformation of physical-chemical features of small water bodies

Hydrobiologia ◽  
2007 ◽  
Vol 584 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Tomasz Joniak ◽  
Natalia Kuczyńska-Kippen ◽  
Barbara Nagengast
Keyword(s):  
Aquatic Macrophytes ◽  
Water Bodies ◽  
Small Water ◽  
Physical Chemical ◽  
Small Water Bodies

scholarly journals Phytocenotic structure and physico-chemical properties of a small water body in agricultural landscape

2014 ◽  
Vol 67 (2) ◽  
pp. 31-40
Author(s):  
Joanna Sender ◽  
Agnieszka Kułak
Keyword(s):  
Agricultural Landscape ◽  
Chemical Properties ◽  
Essential Element ◽  
Water Bodies ◽  
Positive Role ◽  
Small Water ◽  
Physico Chemical ◽  
Quantitative Changes ◽  
Small Water Bodies

Small water bodies, until recently considered as wasteland, are an essential element of the so-called small water retention. Their main use can vary significantly, but they always play a positive role by increasing water resources and enhancing the natural values of the landscape. Moreover, by increasing bio- diversity thanks to plants forming habitats for many species of flora and fauna, small water bodies act as a biofilter, improving water quality. But these small reservoirs belong to the groups of waters that are most exposed to damage, especially within the catchment area. Because of the invaluable role of small farmland water bodies, a study was undertaken to investigate their phytocenotic structure. In addition, an attempt was made to assess the level of threats and to indicate their role in the development of habitat conditions. The investigated reservoir was created in 2007. Before that time, it functioned as a part of the Zemborzycki reservoir, as they were close to each other. Almost the entire surrounding of this small reservoir consisted of farmland. In 2011 a revitalization project was carried out in the reservoir. Plants typical for wetland habitats were mainly introduced, while synanthropic vegetation was removed. Based on chemical and physical analyses, it can be concluded that the investigated reservoir serves as a natural biofilter thanks to the qualitative and quantitative changes in the structure of macrophytes. After the revitalization project, the investigated pond gained new aesthetic and ecological qualities.

scholarly journals The Role of External Factors in the Variability of the Structure of the Zooplankton Community of Small Lakes (South-East Kazakhstan)

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 962
Author(s):  
Moldir Aubakirova ◽  
Еlena Krupa ◽  
Zhanara Mazhibayeva ◽  
Kuanysh Isbekov ◽  
Saule Assylbekova
Keyword(s):  
External Factors ◽  
Water Bodies ◽  
Average Weight ◽  
Ecological State ◽  
Small Lakes ◽  
Small Water ◽  
Shannon Diversity ◽  
East Kazakhstan ◽  
Small Water Bodies

The variability of hydrochemical parameters, the heterogeneity of the habitat, and a low level of anthropogenic impact, create the premises for conserving the high biodiversity of aquatic communities of small water bodies. The study of small water bodies contributes to understanding aquatic organisms’ adaptation to sharp fluctuations in external factors. Studies of biological communities’ response to fluctuations in external factors can be used for bioindication of the ecological state of small water bodies. In this regard, the purpose of the research is to study the structure of zooplankton of small lakes in South-East Kazakhstan in connection with various physicochemical parameters to understand the role of biological variables in assessing the ecological state of aquatic ecosystems. According to hydrochemical data in summer 2019, the nutrient content was relatively high in all studied lakes. A total of 74 species were recorded in phytoplankton. The phytoplankton abundance varied significantly, from 8.5 × 107 to 2.71667 × 109cells/m3, with a biomass from 0.4 to 15.81 g/m3. Shannon diversity index of phytoplankton in the lakes at high altitude varied from 1.33 to 2.39 and from 0.46 to 3.65 in the lakes at lower altitudes. The average weight of the cells of algae species varied from 0.2079 to 1.5076 × 10−6 mg in the lakes at lower altitudes, the average weight of the cells of algae species changed from 0.6682 to 1.2963 × 10−6 mg in the lakes at higher altitudes. Zooplankton was represented by 58 taxa. The total abundance of zooplankton varied from 0.05 to 169.00 thousand ind./m3 with biomass of 0.51-349.01 mg/m3. Shannon diversity of zooplankton in the lakes at lower altitude fluctuated from 0.42 to 2.32 and it was 0.66–1.77 in the lakes at higher altitudes. The average individual mass of specimens in zooplankton in mountain lakes ranged from 0.021 to 0.037 mg and varied from 0.002 to 0.007 mg in other lakes. The main factors in the development of the structure of zooplankton communities in small lakes were temperature, TDS, the content of nitrates, phosphates, and the composition and biomass of planktonic algae. The hydrochemical and biological data of the investigated lakes indicated their organic pollution. Our results once again confirmed the applicability of structural variables of zooplankton in assessing water quality.

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