Determining the Eutrophication State of Ecbatan Reservoir using Carlson Index

Ghashghaie, Maryam; Maralan, Mohammad Reza Serajian; Ostad‐Ali‐Askari, Kaveh; Eslamian, Seyed Saeid; Singh, Vijay P.

doi:10.3844/ajeassp.2018.491.500

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…Several researchers have found similar patterns with higher TP values. ( [6,22,1,7] . [17] : Tiru reservoir…”

Section: Spatio-temporal Variation In Tsi Readings Of the Tiru Reservoirmentioning

confidence: 99%

Comparison of eutrophication level by applying different trophic state indices to the Tiru reservoir, Udgir, dist. Latur

Markad,

Kulkarni,

Markad

et al. 2024

Int. J. Adv. Biochem. Res.

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Freshwater resources are limited in nature and their demand is increasing daily. The use of excessive chemicals and fertilizers increases water fertility. Eutrophication is a common problem all over the world. To conserve these resources, they should be appropriately monitored to know their trophic condition. Various researchers have proposed different water classification criteria and methods. The present study attempted to apply multiple trophic status indicators to the Tiru reservoir water quality characteristics. Water quality data were gathered from the Tiru reservoir, Udgir Tahsil, Latur (Maharashtra) between February 2018 and January 2019. Markad et al. (2019) established the TSI model based on the native biological and geographical conditions, which resulted in optimal performance for measuring the trophic state of the Tiru reservoir.

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“…Several researchers have found similar patterns with higher TP values. ( [6,22,1,7] . [17] : Tiru reservoir…”

Section: Spatio-temporal Variation In Tsi Readings Of the Tiru Reservoirmentioning

confidence: 99%

Comparison of eutrophication level by applying different trophic state indices to the Tiru reservoir, Udgir, dist. Latur

Markad,

Kulkarni,

Markad

et al. 2024

Int. J. Adv. Biochem. Res.

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“…Since the raw waters of this reservoir have always been cloudy by the very high clay content, the Secchi disk depth has been omitted in calculation of the TSI indices of this reservoir. Therefore, the values of this index were calculated using only the Chl-a (µg / L) and TP (µg / L) concentrations according to method described in Ghashghaie et al (2018). The overall TSI (varies between 1 and 100) is therefore the average of TSI (Chl-a) and TSI (TP).…”

Section: Physicochemical Parameters Analysis and Trophic State Index ...mentioning

confidence: 99%

Seasonal Occurrence of Cyanobacteria and First Detection of Microcystin-LR in Water Column of Foum-Gleita Reservoir, Mauritania

et al. 2022

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This work was carried out to study the seasonal occurrence of cyanobacteria and their microcystin-LR in water column of Foum-Gleita reservoir (Mauritania). Limnological and biological factors were investigated at three depths (surface, -3, and -6 m) in this reservoir during a full year. Nutrients were analyzed by Spectrophotometry, phytoplankton was analyzed by Inverted Microscopy, microsystins were analyzed by High Performance Liquid Chromatography-tandem Mass Spectrometry and environmental factors relationships were analyzed by Pearson's correlation and Multiple Linear Regression. Physicochemical analyzes have shown that this reservoir is hypereutrophic with dissolved inorganic nitrogen and total phosphorus concentrations relatively high, varying from 1.39 to 6.53 and 0.21 to 0.57 mg/L, respectively. Annual surface water temperature was exceptionally high (27.8 ± 3.6°C), characterizing of a Sahelian climatic conditions. Phytoplankton analyzes have shown dominance of two toxic cyanobacteria species Microcystis aeruginosa and Dolichospermum os-aquae during warm season (May-September). Microcystins analysis revealed presence of only most toxic variant, microcystin-LR. Microcystin-LR concentration in the surface water samples, during cyanobacterial blooms, was consistently high (5.638 µg/L), exceeding 5-times the World Health Organization drinking water limit (1 µg/L), however, it was much lower (0.83 µg / L) at depth (-6 m). Analysis of environmental factors relationships showed that the most in uential factors on abundance of Microcystis aeruginosa and Dolichospermum os-aquae and variability of microcystin-LR concentrations were total phosphorus, dissolved inorganic nitrogen, iron, temperature and pH. Finally, the study clearly demonstrated need for regular monitoring of cyanobacteria and cyanotoxins in the waters of studied reservoir.

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“…To determine evaluate the eutrophication state of Foum-Gleita reservoir, the Trophic State Index (TSI) method of Carlson (1977) was used. The TSI index value is calculated using only two quality parameters such as Chl-a (mg L À1 ) and TP (mg L À1 ) following the method described in Ghashghaie et al (2018). However, the depth of the Secchi disk was not used in the calculation of this index because the waters of this reservoir are always cloudy by the presence of a very high rate of clay.…”

Section: Sample Analysismentioning

confidence: 99%

Impacts of phosphorus loads on the water quality and the proliferation of harmful cyanobacteria in Foum-Gleita Reservoir (Mauritania)

Sadegh

Sidoumou

Dia

et al. 2021

Ann. Limnol. - Int. J. Lim.

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Excess phosphorus and nitrogen inputs into freshwater ecosystems is one of the main causes of expansion of harmful cyanobacterial blooms worldwide. This work was conducted to study the impacts of phosphorus leaching from the exploitation of phosphate mines present in the watershed of Foum-Gleita Reservoir (Mauritania) on the water quality and its major contribution to the proliferation of harmful cyanobacteria throughout the year. The physicochemical parameters, the occurrence and abundance of phytoplankton (including cyanobacteria), and the microcystins concentration were monitored monthly from September 2017 to August 2018. The relationships between limnological and biological variables were explored by using Pearson's correlation and forward stepwise multiple linear regression (MLR) analysis. Microcystins were detected by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Our results showed that this reservoir can be classified as hypereutrophic throughout the year and that Microcystis aeruginosa (M. aeruginosa) and Dolichospermum flos-aquae (D. flos-aquae) were dominant species during the rainy season (July-September), and only the congener microcystin-LR (MC-LR) was detected with a peak at 3.55 µg L−1. Pearson's correlation and MLR analysis showed that water temperature pH, phosphorus, nitrogen, and iron concentrations were the most important variables accounting for M. aeruginosa and D. flos-aquae abundance and MC-LR concentration. Our study provides new insight into the effects of moderate nitrogen concentrations on phytoplankton community composition with dominance of the cyanobacteria phylum in phosphorus-rich freshwater ecosystems.

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Determining the Eutrophication State of Ecbatan Reservoir using Carlson Index

Cited by 8 publications

References 14 publications

Comparison of eutrophication level by applying different trophic state indices to the Tiru reservoir, Udgir, dist. Latur

Comparison of eutrophication level by applying different trophic state indices to the Tiru reservoir, Udgir, dist. Latur

Seasonal Occurrence of Cyanobacteria and First Detection of Microcystin-LR in Water Column of Foum-Gleita Reservoir, Mauritania

Impacts of phosphorus loads on the water quality and the proliferation of harmful cyanobacteria in Foum-Gleita Reservoir (Mauritania)

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