Mechanisms of enhanced inorganic phosphorus accumulation by periphyton in paddy fields as affected by calcium and ferrous ions

Li, Jiu-yu; Deng, Kai-ying; Hesterberg, Dean; Xia, Yongqiu; Wu, Chenxi; Xu, Runsheng

doi:10.1016/j.scitotenv.2017.07.117

Cited by 14 publications

(5 citation statements)

References 45 publications

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“…Additionally, being similar to the effect of pH on Mn content in soil (Barber, 1995), pH in floodwater also affects the forms and transferability of Mn (Brown et al, 2019), it is then affect Mn accumulation in periphytic biofilm. Furthermore, periphytic biofilm could capture Ca and P (Li et al, 2017;Liu et al, 2019), and the accumulation of Mn enhances the capture of Ca and P by periphytic biofilms (Peng et al, 2019). This is due to Mn accumulation by microbes is a process of the formation of Mn oxides (Amirnia et al, 2019;Peng et al, 2019), and the biogenic Mn oxides could offer extra binding sites for a variety of elements such as uranium, cadmium, hydrogen, arsenic, et al, (Parikh & Chorover, 2005;Ren et al, 2020;Yu et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Periphytic biofilms accumulate manganese, intercepting its emigration from paddy soil

Sun

Gao

Sun

et al. 2021

Journal of Hazardous Materials

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Section: Discussionmentioning

confidence: 99%

Periphytic biofilms accumulate manganese, intercepting its emigration from paddy soil

Sun

Gao

Sun

et al. 2021

Journal of Hazardous Materials

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“…Nitrogen immobilization by phototrophic biofilms is a complex process being affected by a mixture of factors including the structure and the physiological status of the community and the nutrient supply. ,, Here, we answered three questions aimed at elucidating the effects of SOC on nitrogen immobilization by phototrophic biofilms on paddy soils, identifying the pathways behind this immobilization, and thereafter proposing regulating measures for increasing the in situ nitrogen interception by phototrophic biofilms. Based on analyses of phototrophic biofilms collected in paddy fields with different levels of SOC and on microcosm experiments, we present the first empirical evidence that the in situ SOC level is central to influencing the community structure, photosynthesis, and ultimately inorganic nitrogen immobilization by phototrophic biofilms in paddy fields.…”

Section: Discussionmentioning

confidence: 99%

Soil Organic Carbon Enrichment Triggers In Situ Nitrogen Interception by Phototrophic Biofilms at the Soil–Water Interface: From Regional Scale to Microscale

Liu

Zhou

Sun

et al. 2021

Environ. Sci. Technol.

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Phototrophic biofilms are easy to grow at sediment/soil–water interfaces (SWIs) in shallow aquatic ecosystems and greatly impact nutrient biogeochemical cycles. However, the pathways by which they contribute to nitrogen interception and interact with sediment/soil remains largely unknown. Here, we conducted a field investigation in paddy fields in various regions of China and found that nitrogen immobilized in biofilm biomass significantly positively correlated with soil organic carbon (SOC) content. A microcosm experiment showed that this was due to increased bacterial and algal diversity, biomass accumulation, and inorganic nitrogen assimilation at high SOC, especially high dissolved organic carbon (DOC) levels. The metatranscriptomics results further verified that many KO groups of PSII, PSI, AP, and PC in antenna proteins and glutamate synthesis were distinctly expressed at elevated SOC and DOC levels. Our results elucidated the effects and possible pathways of how SOC enrichment triggers photosynthesis and nitrogen immobilization by phototrophic biofilms. The results will provide meaningful information for in situ nitrogen interception by using phototrophic biofilms at the SWI in human-made wetlands to change internal nitrogen cycling.

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“…In the Lake Biwa watershed, rapidly modernized irrigation systems have been established since 1972, when a comprehensive lake development program was implemented. Although such an infrastructure‐oriented approach substantially improved crop production efficiency, it also caused eutrophication and sedimentation in coastal waters due to dissolved and particulate nutrient loading from croplands (Sakai et al 2013, Li et al 2017, Nishino et al 2017). This led to further alterations in benthic macroinvertebrate diversity and trophic energy flows in food webs (Karube et al 2010, Okano et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Rice paddy irrigation seasonally impacts stream benthic macroinvertebrate diversity at the catchment level

Asano

Lin

et al. 2021

Ecosphere

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Agriculture is one of the most critical anthropogenic disturbances to freshwater ecosystems globally.In monsoon Asia, rice paddies provide habitats for aquatic species, but how their associated irrigation systems can affect downstream ecosystems is poorly understood. Here, we used structural equation modeling (SEM) to estimate seasonal variations in benthic macroinvertebrate diversity and environments and quantified indirect effects of land use, especially of rice paddy areas, on benthic macroinvertebrate diversity through local environmental alteration. Our study site was the Yasu River tributary of Lake Biwa, Japan, and we performed our investigation during both irrigation and nonirrigation periods, representing different seasons. Seasonal variations in physical and chemical variables and diversity were observed. Seasonal particulate phosphorus concentrations to a large extent determined the abundance and community composition of benthic macroinvertebrates. SEM revealed that the proportions of forest, urban, and rice paddy areas in the catchment had significant indirect effects on biodiversity indices of local benthic macroinvertebrate communities. The proportion of forest area had robust negative effects on water temperature, but the overall indirect effects on the macroinvertebrate diversity contrasted between the two seasonal periods. The proportion of rice paddy area had a strongly negative indirect effect on the diversity through increased particulate phosphorous loading during the irrigation period, while the proportion of urban area had a significantly negative indirect effect during the nonirrigation period only. The seasonal negative impacts of rice paddy irrigation on benthic macroinvertebrate communities were possibly due to siltation arising from rice paddy soils. Our results have implications for environmental restoration and biodiversity conservation in catchment management.

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Mechanisms of enhanced inorganic phosphorus accumulation by periphyton in paddy fields as affected by calcium and ferrous ions

Cited by 14 publications

References 45 publications

Periphytic biofilms accumulate manganese, intercepting its emigration from paddy soil

Periphytic biofilms accumulate manganese, intercepting its emigration from paddy soil

Soil Organic Carbon Enrichment Triggers In Situ Nitrogen Interception by Phototrophic Biofilms at the Soil–Water Interface: From Regional Scale to Microscale

Rice paddy irrigation seasonally impacts stream benthic macroinvertebrate diversity at the catchment level

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