Differentiated Responses of Plankton
and Zoobenthos to Water Quality Based
on Annual and Seasonal Analysis
in a Freshwater Lake

Jin, Meng; Yu, Zhengda; Miao, Ming; Kong, Qiang; Zhang, Yiran; Liu, Jian

doi:10.15244/pjoes/66713

Cited by 14 publications

(9 citation statements)

References 31 publications

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“…This study is similar to the study of [17] in China, where nutrients availability contributed to increase in phytoplankton biodiversity. However, [18] conducted a study in Nigeria wherein it was revealed that the increase in nutrients caused an increase in phytoplankton phyla being recorded; this is similar to the results of this study.…”

Section: B Phytoplankton Biodiversity Along Segment Of the Tshinanesupporting

confidence: 88%

Impact of Tea Processing Water Wastes on Phytoplankton Composition of Tshinane River, Limpopo Province

Sinthumule¹,

Mokgoebo²,

Gumbo³

2017

Nov. 27-28, 2017 South Africa ASETWM-17, RCABES-17 &Amp; EBHSSS-17

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Abstract-The discharge of industrial waste water on freshwater resources is on the increase worldwide, including in South Africa. The study aimed at assessing the response of phytoplankton upon exposure to high levels of nutrients along the Tshinane River Limpopo Province. The study showed different phytoplankton assemblages with different changes in physico-chemical levels. Environmental factors do have a noticeable effect on phytoplankton abundance as it was shown by statistical analysis. Results computed by the Czekanowski coefficient showed that various environmental factors components contributed to the different composition and types of phytoplankton abundance (p<0.05). When environmental factors showed fluctuation (Increase or decrease) a different type of plankton was found to be tolerant to those levels. A total of 64 species were identified upstream and 103 species identified downstream. Phytoplankton spectrums were recorded from six taxonomic groups namely Chrysophyta, Dinophyta, Chlorophyta, Bacillariophyta, Cyanophyta and Dinophyta. The dominant taxonomic group was Chlorophyta (Downstream) and Bacillariophyta was the dominant phytoplankton upstream. The results supports the assumption that an increase in nutrients lead to a diverse phytoplankton species even if all the other parameters are within the South African Water Quality Range for Aquatic ecosystems. This shows that tea processing waste has a minimal impact on the ecosystem health of Tshinane River and the river is able to recover from the nutrient enrichment.

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Section: B Phytoplankton Biodiversity Along Segment Of the Tshinanesupporting

confidence: 88%

Impact of Tea Processing Water Wastes on Phytoplankton Composition of Tshinane River, Limpopo Province

Sinthumule¹,

Mokgoebo²,

Gumbo³

2017

Nov. 27-28, 2017 South Africa ASETWM-17, RCABES-17 &Amp; EBHSSS-17

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“…The primary nutrients, which influenced phytoplankton in Dongping Lake, changed from TN in spring to TP in summer. The growth of phytoplankton needs a suitable N/P ratio [42], and a previous study found that the N/P ratios in Dongping Lake changed from 5.17 to 9.64 [43]. Frau et al [44] pointed out that the control patterns of bottom-up and top-down effects on phytoplankton were different during different hydrological periods.…”

Section: Plos Onementioning

confidence: 99%

Bottom-up and top-down effects on phytoplankton communities in two freshwater lakes

Jin

Zhang

et al. 2020

PLoS ONE

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The relative importance of bottom-up versus top-down effects in aquatic ecosystems remains a longstanding and ongoing controversy. To investigate these effects on phytoplankton communities in freshwater lakes, phytoplankton and zooplankton were sampled, and physical-chemical variables were measured during spring and summer in two important freshwater lakes in northern China: Nansi Lake and Dongping Lake. The redundancy analysis results showed that phytoplankton density and biomass were regulated by physicalchemical variables (bottom-up effects) and predation (top-down effects) together, and the former was more prominent in both lakes. However, the correlation analysis indicated that the top-down effects of zooplankton on phytoplankton were not significant in spring and summer in both lakes, while the bottom-up regulation of physical-chemical variables on phytoplankton had different patterns in the two lakes. In Nansi Lake, the bottom-up effects of physical-chemical variables on phytoplankton were weaker in summer than that in spring due to the abundant nutrients in summer. In Dongping Lake, the bottom-up effects of physical-chemical on phytoplankton were significant both in spring and summer, and the dominant bottom-up control factor shifted from total nitrogen in spring to total phosphorus in summer, with an increased ratio of nitrogen to phosphorus due to changes in limiting factors. In the two studied lakes, with fish culture, the bottom-up effects of phytoplankton on zooplankton were more important than the top-down effects of zooplankton on phytoplankton. These results demonstrate the interactions between phytoplankton and zooplankton and highlight the importance of phytoplankton regulation in freshwater lakes, which has implications for the effective management of freshwater lake ecosystems.

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“…depletion of initially higher allochthonous nutrient contributing factors [4]. Therefore, dams and reservoirs tenaciously or inadvertently alter the downstream water quality.…”

mentioning

confidence: 99%

Reservoir Water Quality Assessment Based on Chemical Parameters and the Chlorophyll Dynamics in Relation to Nutrient Regime

Atique

2019

Pol. J. Environ. Stud.

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During the past few decades, freshwater resources are subjugated to increasing anthropogenic activities such as the construction of reservoirs for accruing the benefits of power generation, municipal water supply for drinking and household, transportation, flood control, recreation, agriculture, fishing [1], aesthetics, raising aquatic animals, and so on. Due to natural flow manipulations coupled with intensive rainfall [2], degradation of physiochemical water quality is very recognizable [3], besides trophic disarrays such as oligotrophy due to higher water retention time and

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Differentiated Responses of Plankton and Zoobenthos to Water Quality Based on Annual and Seasonal Analysis in a Freshwater Lake

Cited by 14 publications

References 31 publications

Impact of Tea Processing Water Wastes on Phytoplankton Composition of Tshinane River, Limpopo Province

Impact of Tea Processing Water Wastes on Phytoplankton Composition of Tshinane River, Limpopo Province

Bottom-up and top-down effects on phytoplankton communities in two freshwater lakes

Reservoir Water Quality Assessment Based on Chemical Parameters and the Chlorophyll Dynamics in Relation to Nutrient Regime

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