Effects of temperature on phosphorus release in sediments of Hongfeng Lake, southwest China: an experimental study using diffusive gradients in thin-films (DGT) technique

Chen, Jingan; Ding, Shiming; Luo, Jianxun; Xu, Yang

doi:10.1007/s12665-015-4612-3

Cited by 21 publications

(6 citation statements)

References 41 publications

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“…Temperature can interfere with internal loading in several ways: accelerate chemical processes, increase diffusion rates, stimulate mineralization of organic matter and solubilize oxygen in water (Jensen & Andersen, 1992;Gächter & Meyer, 1993;Coffman & Kildsig, 1996;Cornelissen et al, 1997). In this study, the greatest P release was at 32 °C, which may be due to the increased intensity in the coordination competition between the OHand phosphate of the NaOH-rP form, which was also found by Wang et al (2015). In addition, the temperature presented a significant interaction with pH, proving that there was a synergistic relationship between these factors: increasing temperature and pH promoted the release of P in this experiment, most likely from the NaOH-rP fraction because this fraction is the most affected by alkaline pH and high temperatures.…”

Section: Discussionsupporting

confidence: 73%

“…However, pH interferes more greatly in the release of metal-bound P, such as on iron and aluminum, under mainly alkaline conditions (Kim et al, 2003). Under alkaline conditions, the capacity for P to bind to iron and aluminum compounds is decreased due to ion exchange reactions in which hydroxide (OH -) ions replace orthophosphate ions because OHhas a stronger coordination competition capacity than phosphate, which is then released to the water column (Wang et al, 2015). That is most likely what happened in this study due to the predominance (42%) of the NaOH-rP form in the sediment.…”

Section: Discussionmentioning

confidence: 99%

“…From classic investigations (Jensen & Andersen, 1992) to the more recent studies (Wang et al, 2015), the importance of temperature in P release has been demonstrated. An increase in temperature accelerates chemical processes, increases the chemical diffusion rate (Søndergaard, 2007) and can stimulate the mineralization of organic matter in sediment, causing inorganic phosphate release (Boström & Pettersson, 1982).…”

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confidence: 99%

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Internal phoshorus loading potential of a semiarid reservoir: an experimental study

et al. 2021

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Aim To determine the internal P loading potential of semiarid tropical reservoir sediment while verifying the driving factors that affect P release rates. Methods An experiment was performed with water and sediment from the reservoir Boqueirão de Parelhas in Brazil. The effects of three variables on P release were studied: air temperature (region average of 28 °C and 32 °C, simulating an increase of 4 °C), pH (region average of pH 8, more acidic pH 6 and more alkaline pH 10) and oxygen (presence and absence). In addition, P fractionation analysis was performed on the P forms in the sediment. Results It was found that the minimum P release was in an oxic treatment at pH 6 and temperature 28 °C (0.22 mg m-2 d-1 ± 0.13) and the maximum P release in an anoxic treatment at pH 10 and temperature 32 °C (2.1 mg m-2 d-1 ± 0.15). The total P in the sediment was 597 mg kg-1, and the major P form in the sediment was NaOH-rP, the P bound to aluminum, corresponding to 42% of the total P. Conclusion These results allow us to confirm that the sediment of the Boqueirão reservoir is susceptible to the release of P bound to aluminum due to the prevalence of this form in its sediments concomitant with the high temperatures and alkaline pH of the water. This scenario can be aggravated by climate change.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Internal phoshorus loading potential of a semiarid reservoir: an experimental study

et al. 2021

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“…The highest temperature of the Hulunbeier steppe occurs in July and is characterized by the synchronization of high temperature and ample precipitation [ 28 ]. Furthermore, an increase in temperature can enhance the internal phosphorus cycle in the sediments of wetlands, leading to a more serious deterioration of water quality [ 29 , 30 , 31 ]. Although it is well known that increased temperatures result in greater P release [ 32 , 33 ], little is known about the effect of physico-chemical properties on P release rates in the Hulunbeier Steppe wetland.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sediment Chemical Properties on Phosphorus Release Rates in the Sediment-Water Interface of the Steppe Wetlands

et al. 2017

IJERPH

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Rising temperature causes a process of phosphorus release, which can be characterized well using phosphorus release rates (VP). The objective of the present study was to investigate the major factors affecting sediment phosphorus release rates through a wetland habitat simulation experiment. The results showed that the VP of different wetland sediments were different and changed with the order of W–R (river wetland) > W–L (lake wetland) > W–M (grassy marsh wetland) > W–A (reservoir wetland). The main driving factors which influenced sediment phosphorus flux velocity in the sediment–water interface were sediment B-SO42−, B-MBN and A-MBP content. Path analysis and determination coefficient analysis indicated the standard multiple regression equation for sediment phosphorus release rates in the sediment–water interface, and each main factor was Y = −0.105 + 0.096X1 + 0.275X2 − 0.010X3 (r = 0.416, p < 0.01, n = 144), where Y is sediment phosphorus release rates; X1 is sediment B-SO42− content; X2 is sediment B-MBN; and X3 is sediment A-MBP content. Sediment B-SO42−, B-MBN and A-MBP content and the interaction between them were the main factors affecting sediment phosphorus release rates in the sediment–water interface. Therefore, these results suggest that soil chemical properties and microbial activities likely play an important role in phosphorus release rates in the sediment–water interface. We hope to provide effective scientific management and control methods for relevant environmental protection departments.

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“…The endogenous phosphorus cycle is the most important factor affecting phosphorus concentration changes in downstream river water when exogenous phosphorus has been controlled (Haggard and Soerens, 2006). Wetland experts from different countries have studied the phosphorus release mechanisms in different wetland sediments (Dierberg et al, 2017;Ju et al, 2002;Lavoie and Auclair, 2012;Li et al, 2015;Spears et al, 2007;Wang et al, 2015). But research on the sediment phosphorus state of wetland sediments in a mid-temperature steppe is still relatively uncommon (Wu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Phosphorus Content in the Water‐Sediment Interface of Wetlands in a Mid‐Temperature Steppe

et al. 2018

Water Environment Research

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In order to reveal dynamics changes in phosphorus release from the sediments of wetlands in a mid-temperature steppe without external phosphorus input, the relationship between phosphorus content in the overlying water, sediment, and interstitial water was studied using the variables control method. The results showed that, during the incubation period, the content of total phosphorus in the overlying water and the content of total phosphorus in interstitial water both presented in the order of August > September > July. Furthermore, the correlation relationships between phosphorus content in the overlying water, total phosphorus in the interstitial water, and the ratios of sediment Olsen-P to total phosphorus in the interstitial water, indicated that Olsen-P might be a kind of release form of phosphorus - from the sediment to the overlying water of the wetlands in Hulunbeier steppe, without external phosphorus input.

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Effects of temperature on phosphorus release in sediments of Hongfeng Lake, southwest China: an experimental study using diffusive gradients in thin-films (DGT) technique

Cited by 21 publications

References 41 publications

Internal phoshorus loading potential of a semiarid reservoir: an experimental study

Internal phoshorus loading potential of a semiarid reservoir: an experimental study

Effects of Sediment Chemical Properties on Phosphorus Release Rates in the Sediment-Water Interface of the Steppe Wetlands

Dynamics of Phosphorus Content in the Water‐Sediment Interface of Wetlands in a Mid‐Temperature Steppe

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