Effect of heavy metals on soil microbial processes and population

Algaidi, Abdousalam Ahmed

doi:10.21608/eajbsg.2010.16703

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…In Egypt, the use of wastewater for the irrigation of field crops is crucial due to its composition of heavy metals [17]. The presence of heavy metals in high content within the sediments has venomous effects on ecosystems, where they alter the soil productivity, as well as change the soil biology and biochemistry [18][19][20]. The Nile Delta in Egypt is mainly dependent on the water of the Nile River which is inadequate for agriculture and the expansion of the population [21].…”

Section: Introductionmentioning

confidence: 99%

Pollution Risk Assessment of Heavy Metals along Kitchener Drain Sediment, Nile Delta

El-Amier,

Bonanomi,

Abd-ElGawad

2023

Soil Systems

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Population expansion within agricultural lands applies pressure on natural resources, particularly water resources, and leads to contamination through different types of pollutants, such as heavy metals, that consequently alter the ecosystem and impact human health. In the present work, several heavy metals in sediment along the Kitchener drain were assessed using different soil quality and health indices; the Kitchener drain is one of the major drains in the Nile Delta. Sediments were collected from six stations along the drain from upstream to downstream. Soil physical and chemical properties were analyzed as well as four metal pollution indices and five ecological risk indices. Additionally, carcinogenic and noncarcinogenic risks for adults and children were evaluated. The data showed that the Kitchener drain is mainly contaminated with Cd, Pb, and Zn, where the concentrations decreased from upstream to downstream. The eco-toxicological indexes showed that Pb, Zn, and Cr were the most hazardous metals along the drain, mainly at upstream stations. The human health risk indices data revealed that the noncarcinogenic risk of the studied metals can be ordered as follows: Co > Cr > Pb > Mn > Ni > Cd > Cu > Zn for adults, while for children it was Cr > Mn > Co > Pb > Ni > Cd > Cu > Zn. The carcinogenic risk data showed that heavy metals ranged from low to medium in all sites, except for Pb and Zn, which have high carcinogenic risks. The present study showed more contamination upstream compared to downstream which can be attributed to urbanization and human activity, as shown from the land use/landcover map. This highlighted that the major drains inside the Nile Delta suffer from different anthropogenic activities that should be taken into consideration by researchers, scientists, and policymakers. Also, the source of heavy metal pollution, particularly upstream, should be controlled or treated before discharge into the drain. On the other side, downstream (toward the Mediterranean Sea), the heavy metals could affect the trophic levels of the marine ecosystem on the Mediterranean Sea which should be taken into consideration.

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Section: Introductionmentioning

confidence: 99%

Pollution Risk Assessment of Heavy Metals along Kitchener Drain Sediment, Nile Delta

El-Amier,

Bonanomi,

Abd-ElGawad

2023

Soil Systems

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Effect of Heavy Metals on Activities of Soil Microorganism

Inobeme

2021

Microbial Rejuvenation of Polluted Environment

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Heavy Metal Pollution as a Biodiversity Threat

Tovar-Sánchez¹,

Hernández-Plata²,

Santoyo-Martínez³

et al. 2018

Heavy Metals

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Heavy metals exert their toxic effects through different mechanisms. Lately, increasing attention has been focused on understanding the long-term ecological effects of chronically exposed populations and communities and their consequences to the ecosystem. The long-term exposure to heavy metals in the environment represents a threat to wild populations, affecting communities and putting ecosystem integrity at risk. Therefore, this type of exposure represents a threat to biodiversity. In the field, metal exposure is generally characterized by low doses and chronic exposures. This type of exposure exerts alterations across levels of biological organization. Distribution and abundance of populations, the community structure and the ecosystem dynamics may be altered. This chapter will focus on how chronically metal exposures in the field affect negatively populations and communities becoming a threat to biodiversity. Also, attention is put on the tools that enable to characterize and analyze the detrimental effects of heavy metal exposure on wild populations. Hence, the use and development of biomarkers in ecotoxicology will be discussed.

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Effect of heavy metals on soil microbial processes and population

Cited by 4 publications

References 9 publications

Pollution Risk Assessment of Heavy Metals along Kitchener Drain Sediment, Nile Delta

Pollution Risk Assessment of Heavy Metals along Kitchener Drain Sediment, Nile Delta

Effect of Heavy Metals on Activities of Soil Microorganism

Heavy Metal Pollution as a Biodiversity Threat

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