Effects of heavy elements (Pb, Cu, Zn) on algal food uptake by Elphidium excavatum (Foraminifera)

Lintner, Michael; Lintner, Bianca; Wanek, Wolfgang; Keul, Nina; Kammer, Frank von der; Hofmann, Thilo; Heinz, Petra

doi:10.1016/j.heliyon.2021.e08427

Cited by 7 publications

(8 citation statements)

References 38 publications

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“…At high concentrations, the metabolism of H. depressa and/or their symbionts is highly impaired. Lintner et al [ 35 ] analyzed the effects of elevated copper concentrations on the algal food uptake by the foraminiferal species Elphidium excavatum and found a comparable pattern. Because Elphidium excavatum does not host symbionts, we assume an adverse effect on the foraminifera itself, and not only on the photosymbionts.…”

Section: Discussionmentioning

confidence: 99%

“…Zinc (oxide) nanoparticles deriving from sunscreens released by human into the environment at global beaches are presumably considered harmful to a variety of marine microorganisms [ 33 , 34 ]. Highly increased (1044 x Zn enrichment) concentrations of Zn negatively affected the metabolism of foraminifera [ 35 ]. Human extraction of lead and its utilization reaches far back in history, however, the impact on marine organisms is rather diverse [ [35] , [36] , [37] ].…”

Section: Introductionmentioning

confidence: 99%

“…Highly increased (1044 x Zn enrichment) concentrations of Zn negatively affected the metabolism of foraminifera [ 35 ]. Human extraction of lead and its utilization reaches far back in history, however, the impact on marine organisms is rather diverse [ [35] , [36] , [37] ]. Recent studies based on metabolic observations showed that some foraminiferal species might adapt to increasing lead concentrations [ 35 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

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Impact of heavy metals (Cu, Fe, Pb, Zn) on carbon and nitrogen uptake of the diatom-bearing benthic foraminifera Heterostegina depressa

Bubl,

Heinz,

Wanek

et al. 2024

Heliyon

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of heavy metals (Cu, Fe, Pb, Zn) on carbon and nitrogen uptake of the diatom-bearing benthic foraminifera Heterostegina depressa

Bubl,

Heinz,

Wanek

et al. 2024

Heliyon

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“…These results came in agreement with many local studies conducted on the Euphrates River and some Iraqi artificial lakes [40]. The reason for the presence of some species and types of algae and not others may be attributed to the density of aquatic plants in the lake, as the presence of these plants helps the growth of multiple and diverse numbers of phytoplankton that stick to them and which separate from them as a result of various reasons, which causes their spread in the water, increasing the number of their types [41], or the effect of pollutants that may affect the biological activities of algae in addition to the concentration of compounds important for the sustainability of their life and can cause high concentrations of heavy elements to enrich one group of algae without the other because they are active in such environments [42]. The results showed a clear dominance of the species Cyclotella ocellata, Achanthes minutissima, Nietzsche palea, and these species have the ability to tolerate a wide range of nutrients and salinity [43][44][45], and this indicates the presence of pollution in general.…”

Section: Discussionmentioning

confidence: 99%

A study of Physicochemical Parameters, Heavy Metals and Algae in the Euphrates River, Iraq

Hussein,

Al-Darraji,

Rasheed

2023

IOP Conf. Ser.: Earth Environ. Sci.

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For many individuals, heavy metal persistence and toxicity are severe problems. Most of these heavy metals collect in wastewater from effluents discharged by various industries. The efficient re-use of these particles as catalysts is another new development in research that complements the success of hazardous metal particle removal. Five locations along the Euphrates River in western Iraq’s Anbar Governorate were the subject of the research (Husaibah Al-Sharqiah, Al-Karābilah, Barwana, Al-Garma, Al-Forat sub district) and for four seasons (Summer, Autumn, Winter, and Spring) from November 2021 to November 2022 in order to examine how the physical and chemical characteristics of the water in the Euphrates River vary over space and time in these areas. Based on these locations of garbage, contaminants, and heavy metal components that may flow into the river without environmental management, sampling locations on the Euphrates River were chosen. In order to better understand the distribution of heavy metals (HMs: Arsenic (As), Antimony (Sb), Selenium (Se), Molybdenum (Mo), Cyanide (CN-), and Chromium (Cr) in river sediments, five locations in western Iraq were chosen for the research. The PH, electrical conductivity (EC), algaes, and sediments (Nitrate (NO3), sulfate (SO4), and HMs content) were all measured in the river’s edge water. A qualitative research was also carried out at various times of year and locations. 104 different kinds of algae were found, and some of them dominated all the research locations. In each station near the beginning of the estuary, the quantitative research revealed a rise in the number of algae species indicative of pollution, confirming that these sites are impacted by the pollutants from untreated sewage discharged into the Euphrates River in those locations. The average concentrations of HMs and compounds in the sediments were as follows: SO4> NO3>Mo>Cn>Cr>Sb>Se>As. According to the investigation, the HMs polluted cities in the following ways: Sediment concentrations are greater in Husaibah Al-Sharqiah, Al-Karbilah, Barwana, Al-Garma, and Al-Forat subdistrict cities.

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“…Colloidal Pb is also more easily taken up by organisms in the water because of its organic characteristics. The ecological risk of colloidal Pb was higher than Pb ions because of the easier enrichment of this speciation in the food chain (Lintner et al, 2019). In addition, mariculture, ports, and coastal factories have become the main sources of colloidal Pb.…”

Section: Potential Ecological Effects Of Pbmentioning

confidence: 99%

Fractionation of toxic metal Pb from truly dissolved and colloidal phases of seaward rivers in a coastal delta

Ren¹,

Schmidt²,

Li³

et al. 2023

Front. Mar. Sci.

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Colloids of natural river water is a key intermediate carrier of lead (Pb). It is important to monitor the transport–transformation behavior of Pb in the colloidal phase of seaward water because this behavior is related to the levels of pollution input and environmental risks posed to the sea, especially in coastal delta areas. In this study, the fractionation behavior and distribution of toxic Pb from the truly dissolved phase and the different colloidal phases in seven seaward rivers in the Yellow River Delta were investigated. The concentrations of total dissolved Pb, truly dissolved Pb, and colloidal Pb were 0.99–40.09 μg L–1, 0.40–8.10 μg L–1, and 0.60–35.88 μg L–1, respectively. In freshwater rivers, the main component of total dissolved Pb (about > 50%) is truly dissolved Pb but the main component of total dissolved Pb in the seawater environment is colloidal Pb (> 80%). A dramatic increase in salinity causes the deposition (about ≈94%) of all forms of Pb to sediment from estuarine water in winter. However, this sedimentation behavior of colloidal Pb gradually decreases (in the Shenxiangou River) when the river salinity approaches seawater salinity (S = ≈29). In the industrial port (Xiaoqinghe River) and mariculture (Yongfenghe River) estuarine areas, which have extensive seawater, the deposition behavior of colloidal Pb (<15%) is less affected by the change in salinity. This suggests that human activity contributes to the spread of Pb in the offshore environment. The concentration of 100 kDa–0.22 μm Pb has a postive correlation with total colloidal Pb. Its variation is minimally affected by salinity compared with other colloidal components. In addition, the correlation between the molecular weight and aromaticity of chromophoric dissolved organic matter (CDOM) and colloidal Pb suggests that macromolecules in seawater will be important transport carriers of Pb. In all, truly dissolved Pb is the main transport form of dissolved Pb in river freshwater; however, in brackish water in estuaries, colloidal matter gradually becomes the main transport carrier. Surging salinity immobilizes truly dissolved Pb in the estuarine region, but colloidal matter inhibits this deposition. Colloidal phase is the important conversion for land–sea transport of Pb by seaward rivers.

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Effects of heavy elements (Pb, Cu, Zn) on algal food uptake by Elphidium excavatum (Foraminifera)

Cited by 7 publications

References 38 publications

Impact of heavy metals (Cu, Fe, Pb, Zn) on carbon and nitrogen uptake of the diatom-bearing benthic foraminifera Heterostegina depressa

Impact of heavy metals (Cu, Fe, Pb, Zn) on carbon and nitrogen uptake of the diatom-bearing benthic foraminifera Heterostegina depressa

A study of Physicochemical Parameters, Heavy Metals and Algae in the Euphrates River, Iraq

Fractionation of toxic metal Pb from truly dissolved and colloidal phases of seaward rivers in a coastal delta

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