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Impact of river current on the uniformity of littoral communities of Rotifera

Abstract

Studies were carried out in September 2007 at a set of stations called RIVERS located on two tributaries of the Narew River, and six stations on the tributaries of the Supraśl River. Concurrently, rotifers were sampled at nine stations of the River Rudnia (called RUDNIA). The aim of the research was the verification of the hypothesis on the uniforming effect of the river drift on rotifer communities inhabiting aquatic vegetation. The total numbers of all monogonont species inhabiting aquatic vegetation of RUDNIA and RIVERS were 83 and 107, respectively. The percentage similarity of rotifer communities from aquatic vegetation and river current at the same stations was relatively low and only slightly higher in RIVERS (21.7%) than RUDNIA (17.1%), which suggests that species composition of communities of epiphytic rotifer fauna has a rather low impact on species structure of rotifer communities in water drift. The set of individuals of different species carried with the water current was random and various at different stations. Although the percentage similarity of rotifer communities in the river drift calculated for all possible pairs of the stations was relatively lower in RIVERS than in RUDNIA, it was not reflected in the similarity of epiphytic rotifer communities, which were similar in both sets of stations. Thus, the hypothesis cannot be confirmed by the results of this research.

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Dependence between occurrence of selected species of psammic rotifers and phytopsammon abundance

References Bielańska-Grajner I., 2001. The psammmic rotifer structure in three Lobelian Polish lakes differing in pH. Hydrobiologia 446/447: 149-153. Bielańska-Grajner I. 2004. Preliminary investigations of psammon rotifers in two reservoirs in Upper Silesia. Oceanol. and Hydrobiol. Studies , 33: 37-45. Bielańska-Grajner I. 2005. Wrotki (Rotifera) psammonowe zbiorników wodnych wybranych obszarów Polski. Wyd. UŚ, Katowice, English summary 1-114. Bielańska

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Symbiont Fauna of Freshwater Zooplankton in Several Water Bodies of the Dnipro River Basin

Abstract

In several water bodies of the Dnipro river Basin, parasitological studies of the representatives of main taxonomic groups of freshwater zooplankton (Rotifera, Copepoda and Cladocera) were conducted. Altogether 22 species of different taxonomic groups (bacteria, flagellates, algae, fungi, ciliates, etc.) of symbionts of zooplankters were found. The dataon the symbiofauna of zooplankters and on the aspects of biology of certain epibiotic and parasitic species were summarized. The study showed the peculiarities of symbionts distribution by host species in different taxonomic groups of zooplankton. The number of symbiotic species increased in following order: Rotifera → Cladocera → Copepoda. Copepoda had high species richness of epibiotic ciliates and the highest rates of colonization by epibiotic algae.

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Diversity of rotifer communities in lakes of the Suwalki Landscape Park

, Evol. Ecol. Res. 1: 73–95. Meijer M. L., Raat A. J., Doef R. W., 1989, Restoration by biomanipulation of Lake Bleiswijkse Zoom the Netherlands first results, Hydrobiol. Bull. 23: 49–58. Puchalski W., 1987, Ugrupowania fitoplanktonu poeksploatacyjnych zbiorników wodnych (Phytoplankton assemblages in after-exploitation reservoirs) [Ph.D. Thesis], Institute of Ecology PAS, Dziekanów Leśny, 205 pp. Segers H., De Smet W.H., 2008, Diversity and endemism in Rotifera: a review, and Keratella Bory de St Vincent, Biodivers. Conserv. 17(2): 303

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Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake.

smallbodied zooplankton in warm lakes – evidence from lakes, fish enclosures and surface sediment. Hydrobiologia, 667, 133-147. Kalafatić, M., Kovačević, G., Zupan, I., Franjević, D. (2003): Effect of repeated UV-irradiation on Hydra oligatis Pallas. Periodicum biologorum, 105, 2, 171-175. Kovačević, G., Želježić, D., Horvatin, K., Kalafatić, M. (2007): Morphological features and comet assay of green and brown hydra treated with aluminium. Symbiosis, 44, 1, 145-152. Kuczyńska-Kippen, N. (2001): Diurnal vertical distribution of rotifers (Rotifera) in the

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An analysis based on rotifer indices of the effects of water and sewage management on water quality in the system of interconnected glacial lakes

Abstract

The aim of the study was the long-term observation of changes in the trophic status of the Great Masurian Lakes versus changes in the management of lakes’ watershed. The Great Masurian Lakes (GML), a system of interconnected glacial lakes, were, until the 80s, receivers of untreated and partially treated sewage from cities and diffuse sources, particularly in the tourist season. In the 90s, state farm areas turned into fallow land, which reduced the input of nutrients from diffuse sources. In the late 90s municipal sewage plants began to be systematically built in cities and the larger villages of the region. An analysis of changes in the trophic status of the GML hydro-system during the period of 35 years was based on rotifer indices of lake trophy. Results of the analysis show that in 1976 lakes in the northern and southern part of the GML system were mesotrophic or meso-eutrophic, while in the central part, in the triangle formed by three cities, the beginning of eutrophication was observed. After several years of increased inflow of nutrients due to the impact of tourism, a marked increase in the trophy of lakes was noticed in the central part of the system. In the 90s, after the collapse of large-scale agriculture and the installation of modern sewage treatment plants, the trophic status of nearly all lakes in the central and southern parts of the system ranged between meso-eutrophy and low eutrophy. The exceptions were Lake Nidzkie, whose trophy increased and Lake Niegocin, which became mesotrophic. Changes in the trophic status of the studied lakes indicate high sensitivity of the GML system to anthropogenic changes in their watershed.

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Long-term changes in the trophic state of Suwalki lakes – an analysis by means of indices based on abundance and composition of their rotifer fauna

Abstract

Rotifer abundance and species composition in lakes of the Suwalki Landscape Park were studied in the years 1983–1985, 2009, 2012 and 2015. Rotifer trophic state indices (TSIROT) were used to assess changes in the trophic state of the studied lakes. In most lakes of the Suwalki Landscape Park, there were no changes in rotifer communities over the 25–32 year period to indicate a decline in trophy of the lakes. However, in lakes with the strongest decline in TSIROT values, the values of indicative parameters widely varied in 2015, which may indicate that the status of rotifer communities in the lakes may be dependent on non-trophic factors.

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Correspondence of zooplankton assemblage and water quality in wetlands of Cachar, Assam, India: Implications for environmental management

perennial ponds of Virudhunagar district, Tamilnadu, J. Environ. Biol. 31(3): 265–272. Savitha N., Yamakanamardi S.M., 2012, Studies on abundance of zooplanktons in lakes of Mysore, India, J. Environ. Biol. 33(6): 1079–1085. Sharma B.K., 1998, Freshwater Rotifers (Rotifera: Eurotatoria), Fauna of West Bengal. State Fauna Series 3(11): 341–461. Sharma B.K., 2005, Rotifer communities of floodplain lakes of the Brahmaputra basin of lower Assam (N.E. India): biodiversity, distribution and ecology, Hydrobiologia 533(1–3): 209–221. Sharma B.K., 2007

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The Toxicity of Aluminium Salts to Lecane Inermis Rotifers: Are Chemical and Biological Methods Used to Overcome Activated Sludge Bulking Mutually Exclusive?

-Jawecki, G., Drobniewska, A., Kaza, M., Sumorok, B., Izydorczyk, K., Zalewski, M., & Rawicki, J. (2008). Application of a microbiotests battery for complete toxicity assessment of rivers. Ecotoxicology and Environmental Safety , 7, 830-836. [8] Perez-Legaspi, I.A. & Rico-Martinez, R. (1998). Acute toxicity tests on three species of the genus Lecane (Rotifera: Monogononta). Hydrobiologia , 446/447, 375-381. [9] Guzmán, F.T., Gonzáles, F.J.A., & Martínez, R.R. (2010). Implementing Lecanequadridentata acute toxicity tests to assess the toxic

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Associated Fauna to Eichhornia crassipes in a Constructed Wetland for Aquaculture Effluent Treatment

Abstract

Water, sediment and associated fauna were studied in a water hyacinth (Eichhornia crassipes) stand of a constructed wetland, used for aquaculture effluent treatment in SE Brazil, in February-April (summer/rainy season) and July-September (winter/dry season). The hydrological regime and decomposition processes had strong impact on the wetland water quality and on the associated fauna composition. Protozoa and Rotifera were at high densities, mainly in the dry season. Vorticella sp. was the dominant species in both seasons. Zooplankton richness, evenness and diversity were high during both seasons, with higher levels during the rainy season. Protozoa diversity and evenness were higher in the dry season when the water volume was lower. Maximum plant residence time in this wetland should be about 60 days.

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