Contribution of Internal Nutrients Loading on the Water Quality of a Reservoir

Lee, Hye Won; Lee, Yong Seok; Kim, Jonggun; Lim, Kyoung Jae; Choi, Jung Hyun

doi:10.3390/w11071409

Cited by 17 publications

(10 citation statements)

References 45 publications

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“…The abundance of phosphorus compounds in a water depends, not only on the external load supplied, but also on the capacity for internal supply by way of the release of phosphates from bottom sediments under anoxic conditions ( Nikolai & Dzialowski, 2014 ; Bartoszek, 2019 ; Lee et al, 2019 ). Phosphorus may be released even where conditions in the near-bottom water are aerobic, on account of the decomposition of OM deposited previously ( Dondajewska, 2008 ; Sobczynski, 2009 ; Paytan et al, 2017 ).…”

Section: Resultsmentioning

confidence: 99%

“…The main economic problem characteristic for waters of this size is their tendency to experience ongoing deterioration in water quality, as associated with a rapid reduction in capacity and therefore declining resilience to supplied contaminants. A marked process of silting and shallowing is also associated with intensified sediment resuspension that combines with turbidity to encourage secondary pollution with substances accumulated in bottom sediments ( Cyr, McCabe & Nürnberg, 2009 ; Tammeorg et al, 2016 ; Lee et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Bartoszek

Miąsik

Koszelnik

2020

PeerJ

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The objective of the work was to demonstrate the relationship between the natural environmental characteristics of a reservoir and its catchment and severity of trophic degradation. The shallow, highly-silted Rzeszów Reservoir (SE Poland) was the object of study. The impact on degradation of internal supply from accumulated bottom sediments was also assessed, using water and sediment sampled in 2013 and 2014. A high value for trophic state was identified for the reservoir on the basis of TSI indexes, while assessed natural resilience to degradation and analysis of the catchment as a supplier of biogenic and organic matter both indicate high susceptibility to cultural eutrophication. Obtained values for equilibrium phosphate concentrations under anoxic conditions (EPC-0) point to the possibility of a more intensive process of internal supply in phosphorus. However, the presence of sediments poor in organic matter suggest no major threat of ongoing eutrophication. Desludging and/or dredging are likely to entail elimination from the ecosystem of a large part of the pollutants accumulated in sediments, as well as the internal supply of phosphate to the water column. However, as external sources are responsible for the advanced degradation of Rzeszów Reservoir, any attempts at reclamation within the water will fail to yield persistent effects if appropriate protective procedures in the catchment are not implemented.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Bartoszek

Miąsik

Koszelnik

2020

PeerJ

View full text Add to dashboard Cite

show abstract

“…The abundance of phosphorus compounds in a water depends, not only on the external load supplied, but also on the capacity for internal supply by way of the release of phosphates from bottom sediments under anoxic conditions (Nikolai & Dzialowski, 2014;Bartoszek, 2019;Lee et al, 2019). Phosphorus may be released even where conditions in the near-bottom water are aerobic, on account of the decomposition of OM deposited previously (Dondajewska, 2008;Sobczyński, 2009;Paytan et al, 2017).…”

Section: Trophic State and The Role Of Sediments As An Internal Sourcmentioning

confidence: 99%

“…The main economic problem characteristic for waters of this size is their tendency to experience ongoing deterioration in water quality, as associated with a rapid reduction in capacity and therefore declining resilience to supplied contaminants. A marked process of silting and shallowing is also associated with intensified sediment resuspension that combines with turbidity to encourage secondary pollution with substances accumulated in bottom sediments (Cyr, McCabe & Nürnberg, 2009;Tammeorg et al, 2016;Lee et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Peer Review #1 of "Trophic degradation predispositions and intensity in a high-flow, silted reservoir (v0.1)"

2020

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The objective of the work was to demonstrate the relationship between the natural environmental characteristics of a reservoir and its catchment and severity of trophic degradation. The shallow, highly-silted Rzeszów Reservoir (SE Poland) was the object of study. The impact on degradation of internal supply from accumulated bottom sediments was also assessed, using water and sediment sampled in 2013 and 2014. A high value for trophic state was identified for the reservoir on the basis of TSI indexes, while assessed natural resilience to degradation and analysis of the catchment as a supplier of biogenic and organic matter both indicate high susceptibility to cultural eutrophication. Obtained values for equilibrium phosphate concentrations under anoxic conditions (EPC-0) point to the possibility of a more-intensive process of internal supply in phosphorus. However, the presence of sediments poor in organic matter suggest no major threat of ongoing eutrophication. Desludging and/or dredging are likely to entail elimination from the ecosystem of a large part of the pollutants accumulated in sediments, as well as the internal supply of phosphate to the water column. However, as external sources are responsible for the advanced degradation of Rzeszów Reservoir, any attempts at reclamation within the water will fail to yield persistent effects if appropriate protective procedures in the catchment are not implemented.

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“…The movement of endogenous nutrients is mainly caused by the relative environmental conditions [26]. For instance, several drivers of P release generally include pH, dissolved oxygen, redox potential, temperature, flow rate and biological activity [24,27].…”

mentioning

confidence: 99%

The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm

Tang

Deng

et al. 2020

Environ Sci Eur

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Background: Achieving nitrogen (N) and phosphorus (P) control in sediment remediation projects by adding natural materials is receiving increasing attention. In this study, different natural materials, including iron-rich clay minerals, calcite, kaoline, sugarcane bagasse and Phragmites detritus, were applied to test their effects on N and P in a mesocosm experiment. Results: Iron-rich clay minerals and Phragmites detritus had obvious advantages for P control; they resulted in almost undetectable levels of soluble reactive phosphorus (SRP) in the water column throughout the experiment. This finding can be explained by their strong P adsorption ability. The high level of available organic carbon in the sediment and water column after sugarcane bagasse addition provided enough electron donors for denitrification and dissimilatory nitrate reduction to ammonium (DNRA), which caused nitrate (NO 3 −-N) deficiency and ammonium (NH 4 +-N) accumulation in the water column. Additionally, this resulted in anaerobic conditions, further fuelling the release of P from iron-bound P induced by anoxia. Thus, the amount of sugarcane bagasse applied should be considered carefully in order to balance denitrification and DNRA as well as P releases. Calcite and Phragmites detritus are recommended as remediation materials for N removal based on their significant promotion of denitrification and limitation of DNRA, which resulted in low NO 3 −-N and NH 4 +-N levels. These results can be explained by the shifts in the functional microbial community composition and abundance after the addition of natural materials. Conclusions: Iron-rich clay minerals and Phragmites detritus are promising sediment remediation materials for P immobilization due to their strong P adsorption ability. Taken together, the selection of sediment remediation materials should consider the N and P coupling relationship, to prevent NO 3 −-N removal from causing P leaching or NH 4 +-N accumulation.

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Contribution of Internal Nutrients Loading on the Water Quality of a Reservoir

Cited by 17 publications

References 45 publications

Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Peer Review #1 of "Trophic degradation predispositions and intensity in a high-flow, silted reservoir (v0.1)"

The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm

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