Heavy metals concentration in mangrove tissues and associated sediments and seawater from the north coast of Persian Gulf, Iran: Ecological and health risk assessment

Rezaei, Marzieh; Kafaei, Raheleh; Mahmoodi, Marzieh; Sanati, Ali Mohammad; Vakilabadi, Dariush Ranjbar; Arfaeinia, Hossein; Dobaradaran, Sina; Sorial, George A.; Ramavandi, Bahman; Boffito, Daria C.

doi:10.1016/j.enmm.2021.100456

Cited by 27 publications

(15 citation statements)

References 63 publications

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“…In tropical and subtropical coastal systems worldwide, mangroves are considered as natural pollution filters (Maghsodian et al, 2021;Rezaei et al, 2021), because they are usually located close to urban or industrial environments that dump their waste with little or no treatment. In general, these ecosystems are recognized worldwide as natural environments that are exposed to a range of pollutants including MPs, in part due to their role as a conduit between the terrestrial and marine realms (Ward et al, 2016;Celis et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Microplastic distribution in urban vs pristine mangroves: Using marine sponges as bioindicators of environmental pollution

Celis-Hernández

Ávila

Ward

et al. 2021

Environmental Pollution

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Section: Introductionmentioning

confidence: 99%

Microplastic distribution in urban vs pristine mangroves: Using marine sponges as bioindicators of environmental pollution

Celis-Hernández

Ávila

Ward

et al. 2021

Environmental Pollution

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“…Soil factors such as redox potential, pH, and cationic exchange capacity drive TM bioavailability in mangrove soils, and therefore transfer to mangrove trees (Batty, 2000;Bourgeois et al, 2020;Fritioff et al, 2005;Huang X et al, 2020;Marchand et al, 2016;Robin et al, 2021). TM transfer to mangrove plants differs greatly between TM, tissues, and species since it depends on metabolic requirements (He et al, 2014;Marchand et al, 2016;Rezaei et al, 2021;Robin et al, 2021). Mangrove species have developed mechanisms to prevent metallic stress.…”

Section: Introductionmentioning

confidence: 99%

Distribution and bioaccumulation of trace metals in urban semi-arid mangrove ecosystems

Robin

Marchand

Mathian

et al. 2022

Front. Environ. Sci.

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Mangrove ecosystems are known to act as filters for contaminants between land and sea. In New Caledonia, urbanization has increased along the coastline during the last decades. However, the impact of urbanization on contaminant cycling in mangrove forests has remained unexplored. In this study, we investigated trace metals (TM) dynamics in an urban mangrove soil and their transfer to mangrove tissues for the two dominant mangrove species in New Caledonia: Avicennia marina and Rhizophora stylosa. The results suggest that decades of urban rainwater runoff from an upper neighborhood induced large variations of mangrove soil physico-chemical properties compared to a control mangrove site sharing the same geological watershed. The urban mangrove site had a neutral pH and low salinity in the upper soil, while the control mangrove site presented acidic pH and a salinity ranging from 24 to 62 g L−1. Most TM were significantly less concentrated in the urban mangrove soil varying from 1.3 ± 0.3 μg g−1 at the urban site and 1.9 ± 0.5 μg g−1 at the control site for Cd, to 30 ± 8 mg g−1 and 49 ± 11 mg g−1 for Fe at the urban and control site, respectively. However, higher root bioconcentration factors were measured for As, Cd, Co, Cr, Fe, Mn, Ni, and Pb in the urban mangrove soil (1.7 ± 0.9, 0.14 ± 0.06, 0.23 ± 0.13, 0.042 ± 0.026, 0.088 ± 0.057, 0.47 ± 0.39, 0.21 ± 0.12, and 0.25 ± 0.09, respectively) compared to the control mangrove soil (0.11 ± 0.03, 0.041 ± 0.016, 0.045 ± 0.021, 0.010 ± 0.004, 0.013 ± 0.007, 0.094 ± 0.030, 0.022 ± 0.011, and 0.12 ± 0.03, respectively). The bioavailability of TM in the urban mangrove soil may be favored by suboxic conditions associated to less Cl-TM complexes and pyrite-TM complexes in the soil. Only Cu, Pb, Ti, and Zn, usually associated with urbanization, were more concentrated in the urban mangrove soil with mean concentrations of 27 ± 4, 17 ± 2, 4,571 ± 492, and 62 ± 12 μg g−1 at the urban site, respectively, and 21 ± 4, 10 ± 3, 2,834 ± 541, and 57 ± 12 μg g−1 at the control site, respectively. No significant difference in translocation factors was measured between the two sites, evidencing a regulation of TM translocation to the upper tissues by mangrove trees.

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“…Thus, most heavy metals are enriched in sediments [25]. The distribution of heavy metals in water and sediment in urban rivers has been well studied and the responses of microbial communities to heavy metal contamination were also well reported [26][27][28]. As the most sensitive organisms, microbial communities in sediment might exhibit different community structures and microbial distribution in response to heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Identifying Microbial Distribution Drivers of Archaeal Community in Sediments from a Black-Odorous Urban River—A Case Study of the Zhang River Basin

Shen

Zhao

Xie

et al. 2021

Water

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Rapid urbanization has destroyed urban water systems and led to blackened and odorous rivers. The heavily polluted rivers are always facing eutrophication and heavy metal pollution, while the combined effects of these environmental factors on the microbial diversity and distribution of the river microbial communities have not been adequately reported, especially the archaeal communities. In this study, we investigated the community structure and microbial distribution of sediment archaeal communities from an urban blackened and odorous river basin of the Zhang river, in Nanling, China. Results showed that the archaeal community from the eight sediment sites have average values of Shannon and Chao1 at 3.4921 and 232.7202, respectively. The community diversity and richness were different among samples. Halobacterota and Euryarchaeota were the most abundant phylum and Crenarchaeota also took up a considerable amount of the archaeal community. To reveal the main environmental drivers of the distribution of archaeal communities in sediment, the environmental physicochemical factors (total nitrogen, total phosphorus, oxidation/reduction potential, nitrate nitrogen, ammonia nitrogen, pH and total organic carbon) and heavy metals (Cr, Ni, Cu, Zn, As, Cd, Pb and Hg) in sediment were determined. A redundancy analysis (RDA) revealed that Eh was the most prominent influencing factor, and As was the most influential heavy metal on the microbial distribution of archaeal communities. Furthermore, a variance partitioning analysis (VPA) was used to identify the impacts of physicochemical factors and heavy metals on the archaeal community distribution. Results showed that heavy metals have higher effects on archaeal community distribution than physicochemical factors. The present study suggested that the heavy metal pollution should be paid more attention in the microbial distribution in heavily polluted urban rivers, and also should be taken into consideration for improving the efficacies of ecological evaluation and remediation.

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Heavy metals concentration in mangrove tissues and associated sediments and seawater from the north coast of Persian Gulf, Iran: Ecological and health risk assessment

Cited by 27 publications

References 63 publications

Microplastic distribution in urban vs pristine mangroves: Using marine sponges as bioindicators of environmental pollution

Microplastic distribution in urban vs pristine mangroves: Using marine sponges as bioindicators of environmental pollution

Distribution and bioaccumulation of trace metals in urban semi-arid mangrove ecosystems

Identifying Microbial Distribution Drivers of Archaeal Community in Sediments from a Black-Odorous Urban River—A Case Study of the Zhang River Basin

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