Anthropogenic impacts on nutrient variability in the lower Yellow River

Wu, Nian; Liu, Sumei; Zhang, Guiling; Zhang, Hongmei

doi:10.1016/j.scitotenv.2020.142488

Cited by 51 publications

(22 citation statements)

References 47 publications

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“…The high amounts of nutrients in the polluted canal may be attributable to the domestic, industrial, and agricultural drainage from the anthropogenic activities in the nearby area ( Eid et al 2010 ). The agricultural activities include irrigation and fertilization around the polluted sites, which could significantly increase the contents of inorganic elements and thus elevate nutrients level ( Kiani et al, 2020 , Wu et al, 2021 ). In addition, most of the investigated variables were concentrated in the sediment more than water.…”

Section: Discussionmentioning

confidence: 99%

“…Nutrients concentrations in aquatic ecosystems have increased due to socio-economic development and intensive anthropogenic activities resulting in eutrophication and, consequently, ecosystem degradation ( Wu et al 2021 ). For decades, an excessive nutrient in aquatic ecosystems is considered a worldwide challenge due to its consequence of eutrophication ( Huang et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Nutrient sequestration potential of water primrose Ludwigia stolinefera (Guill. & Perr.) P.H. Raven: A strategy for restoring wetland eutrophication

Galal

Alhmad

Al-Yasi

2021

Saudi Journal of Biological Sciences

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The current work investigates the capacity of the water primrose ( Ludwigia stolinefera ) to sequester inorganic and organic nutrients in its biomass to restore eutrophic wetlands, besides its nutritive quality as fodder for animals. The nutrient elements and nutritive value of the water primrose were assessed seasonally in polluted and unpolluted watercourses. The water primrose plants’ highest biomass was attained during summer; then, it was significantly reduced till it reached its lowest value during winter. In the polluted canal, the plant root and shoot accumulated higher contents of all nutrient elements (except Na and Mg) rather than in the unpolluted Nile. They accumulated most investigated nutrients in the growing season during summer. The shoots accumulated higher contents of N, P, Ca, and Mg than the root, which accumulated higher concentrations of Na and K. Therefore, summer season is the ideal time to harvest water primrose for removing the maximum nutrients for restoring eutrophic watercourses. The aboveground tissues had the highest values of ether extract (EE) during spring and the highest crude fibers (CF) and total proteins (TP) during summer. In contrast, the belowground tissues had the lowest EE, CF, and TP during winter. In spring, autumn, and winter seasons, the protein content in the grazeable parts (shoots) of the water primrose was within the range, while in summer, it was higher than the minimum requirement for the maintenance of animals. There was a decrease in crude fibers and total proteins, while an increase in soluble carbohydrates content in the below- and above-ground tissues of water primrose under pollution stress. The total protein, lipids, and crude fibers of the aboveground parts of water primrose support this plant as a rough forage.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nutrient sequestration potential of water primrose Ludwigia stolinefera (Guill. & Perr.) P.H. Raven: A strategy for restoring wetland eutrophication

Galal

Alhmad

Al-Yasi

2021

Saudi Journal of Biological Sciences

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“…The increased plant tissue nutrients is known as luxury uptake, which is a strategy by which plants assimilate excessive nutrient concentrations for normal metabolism (Cronk and Fennessy 2001). Nutrient contents in aquatic environments have increased due to the intensive anthropogenic activities, which results in eutrophication and, thus, ecosystem degradation (Wu et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the nutrient status and forage quality of the hippo grass (Vossia cuspidata (Roxb.) Griff.) along Ismailia canal, Egypt

Galal

Gharib

Al-Yasi

et al. 2021

Journal of Freshwater Ecology

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The present study aims at investigating the potential of the hippo grass for sequestering inorganic and organic nutrients in its biomass, in addition to its forage quality along Ismailia Canal, Egypt. Eight sites including 6 polluted and 2 unpolluted were selected for a seasonal plant, water and sediment investigations. The nutrients and nutritional value of the plant tissues were estimated. The highest aboveground biomass was recorded during summer, while the lowest was in winter. The plant had the highest contents of Na, K, N and Mg during winter, while P and Ca during spring and autumn, respectively. Also, Na, K and P had the highest concentrations (176.7 mg kg À1 , 206.9 mg kg À1 and 1.1%) in the belowground, while N, Ca and Mg (0.9, 1.6 and 0.5%) in the aboveground organs. The contents of the investigated elements (except Na) were comparable in polluted and unpolluted canals with no significant differences. The aboveground parts had the highest values of ether extract (1.1%) during summer, crude fibres (60.2%) during spring, and total proteins (5.6%) during winter. The belowground tissues had the highest values of metabolized, digestible and net energy (2.4, 2.0 and 1.0 Mcal kg À1 ) during winter. In contrast, the aboveground shoots had the highest amounts of digestible crude protein (1.7%) during winter and gross energy during spring. The nutritional value of the hippo grass from unpolluted canals were greater than polluted ones for both above-and belowground parts. Hippo grass can sequester large amounts of nutrients. Consequently, this plant can be used in restoring eutrophic water through harvesting the aboveground biomass during the growing season. Besides, the aboveground shoots of the hippo grass could be used as a forage for dairy cattle, goat, beef cattle and sheep.

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“…Agricultural drainage, as well as home and industrial effluents from anthropogenic activities, are the primary causes of pollution in eutrophic water bodies, according to Galal et al [41]. In the same vein, polluted areas in the current study are surrounded by huge amounts of agricultural fields, which could dramatically raise the levels of water nutrients, particularly N and P, and, hence, enhance eutrophication [42,43].…”

Section: Discussionmentioning

confidence: 58%

Nutrient Remediation Efficiency of the Sedge Plant (Cyperus alopecuroides Rottb.) to Restore Eutrophic Freshwater Ecosystems

et al. 2022

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The current study investigated the nutrients removal efficiency of the sedge macrophyte Cyperus alopecuroides to treat water eutrophication, besides evaluating the recycling possibility of the harvested material. Samples of sediment, water, and plant tissues were taken seasonally from six polluted and three unpolluted locations for this investigation. The growth properties of C. alopecuroides showed remarkable seasonal differences in plant density and biomass, with the maximum values (7.1 individual/m2 and 889.6 g/m2, respectively) obtained during summer and the minimum (4.1 individual/m2 and 547.2 g/m2, respectively) in winter. In polluted locations, the above-ground tissues had an efficiency to remove more contents of N and P (11.9 and 3.8 g/m2, respectively) than in unpolluted ones (7.1 and 3.4 g/m2, respectively). The high-nutrient standing stock of C. alopecuroides supports its potential use for nutrient removal from eutrophic wetlands. The tissues of C. alopecuroides had the maximum nutrients removal efficiency to remediate great amounts of Na, K, and N in summer, and Ca, P, and Mg in spring. Above- and below-ground parts of C. alopecuroides from unpolluted locations can be considered as a rough forage for beef cattle, dairy cattle, goats, and sheep. The present study indicated the potential of C. alopecuroides in restoring eutrophic freshwater ecosystems, and, thus, it can be used in similar habitats worldwide.

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Anthropogenic impacts on nutrient variability in the lower Yellow River

Cited by 51 publications

References 47 publications

Nutrient sequestration potential of water primrose Ludwigia stolinefera (Guill. & Perr.) P.H. Raven: A strategy for restoring wetland eutrophication

Nutrient sequestration potential of water primrose Ludwigia stolinefera (Guill. & Perr.) P.H. Raven: A strategy for restoring wetland eutrophication

Evaluation of the nutrient status and forage quality of the hippo grass (Vossia cuspidata (Roxb.) Griff.) along Ismailia canal, Egypt

Nutrient Remediation Efficiency of the Sedge Plant (Cyperus alopecuroides Rottb.) to Restore Eutrophic Freshwater Ecosystems

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