Rotifers as indicators of water quality

Sládeček, V.

doi:10.1007/bf00027429

Cited by 418 publications

(314 citation statements)

References 53 publications

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“…It is well known that zooplankton species may not always ideally cope with laboratory conditions, given stress-induced factors interfering with reproductive rates and, thus, density growth ( Sarma and Nandini, 2001). As in the present investigation, several studies also found positive correlations between Brachionus species and eutrophic conditions (Gannon and Stemberger, 1978;Sládeck, 1983;Blancher, 1984;Berzins and Pejler, 1989;Matsumura-Tundisi et al, 1990;Pontin and Langley, 1993;Torres-Orozco and Zanatt, 1998).…”

Section: Discussionsupporting

confidence: 80%

Effects of experimental eutrophization on zooplankton community

et al. 2013

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Aims:The present study evaluated the role that increased nutrient concentrations play on zooplankton community, by employing an experimental laboratory approach. Methods: Experiments were conducted in the laboratory, where three trophic state conditions were simulated, namely, mesotrophic, eutrophic and hypereutrophic. Each treatment was replicated three times and individuals of Brachionus urceolaris (10 individuals), Hexarthra mira (5) (Rotifera), Latonopsis sp. (10), Moina minuta (10) (Cladocera) and Thermocyclops sp. (5) (Copepoda) were introduced to each replicate. On the first experiment day, and at 7-day intervals for a 14-day period (totaling three evaluations), all water content was collected from each container and filtered to determine the densities of each zooplankton species. Two-way MANOVA and one-way ANOVA designs were used to determine zooplankton density fluctuations among treatments and throughout the study period. Further, Generalized Linear Models (GLMs) were employed to assess how environmental factors affected zooplankton numbers. Phytoplankton composition was also determined in the beginning and in the end of the experiment. Results: B. urceolaris and copepod nauplii, which are typical of eutrophic environments, showed higher densities on the eutrophic and hypereutrophic treatments. Furthermore, cyanobacteria such as Aphanothece sp. and Merismopedia sp. were recorded on the eutrophic and hypereutrophic treatments, respectively. Conclusions: Similarly to what is frequently observed in the wild, the eutrophic treatment showed higher densities of particular zooplankton species which are known to temporarily benefit from an increase in trophic concentrations. Positive or negative responses from zooplankton dynamics (but also phytoplankton species), provide an important bioindicator framework. Furthermore, results of the present study outline the need for implementing recovery measures on aquatic environments subject to constant nutrient inputs.Keywords: zooplankton, trophic states, phytoplankton, laboratory experiments.Resumo: Objetivos: O presente estudo avaliou os efeitos do aumento na concentração de nutrientes sobre a comunidade zooplanctônica, através de experimentos laboratoriais. Métodos: Os experimentos foram realizados em laboratório, onde três estados tróficos foram simulados, a saber, mesotrófico, eutrófico e hipereutrófico. Cada tratamento foi replicado três vezes, e indivíduos de Brachionus urceolaris (10 indivíduos), Hexarthra mira (5) (Rotifera), Latonopsis sp. (10), Moina minuta (10) (Cladocera) e Thermocyclops sp. (5) (Copepoda) foram introduzidos em cada réplica. Durante o primeiro dia de experimento, e a cada sete dias de intervalo durante 14 dias (totalizando três amostragens), toda a água foi coletada de cada aquário e filtrada, para a determinação das densidades de cada espécie de zooplâncton. MANOVAs duas vias e ANOVAs de uma via foram empregadas para a determinação das variações nas densidades de zooplâncton entre os tratamentos e ao longo do período de estudo....

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Section: Discussionsupporting

confidence: 80%

Effects of experimental eutrophization on zooplankton community

et al. 2013

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“…5 and 6). Zooplankton, owing to their small, fast reproducing and sensitive characteristics, are good indicators of environmental changes (Sládeček, 1983) and frequently used in environmental monitoring and assessment (Gulati, 1983;Xu et al, 2005;Yang et al, 2009). In the present case, the zooplankton community structure including qualitative and quantitative parameters indicated the different stages well.…”

Section: Discussionmentioning

confidence: 52%

Changes in physicochemical and biological factors during regime shifts in a restoration demonstration of macrophytes in a small hypereutrophic Chinese lake

Zhang

Liu

et al. 2010

Ecological Engineering

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“…Rotifers are usually regarded as bio-indicators of water quality (Sládeček, 1983), and their abundance and population characteristics are used as effective indicators of environmental changes (Attayde and Bozelli, 1998). According to the results, Factor-1 and Factor-2 were both mainly associated with rotifers, and Factor-4 mainly with zooplanktonic crustaceans, while PCA showed that Factor-1 was mainly affected by IP, Chl-a and TP, Factor-2 by EC, TDS and TN, and Factor-4 by SD, water depth and temperature.…”

Section: Community Structure Variationmentioning

confidence: 99%