Urban-rural gradients in the distribution of trace metals in sediments within temperate mangroves (New Zealand)

Bastakoti, Ujwal; Bourgeois, Carine; Marchand, Cyril

doi:10.1016/j.marpolbul.2019.110614

Cited by 10 publications

(4 citation statements)

References 65 publications

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“…For instance, Cr and Ni concentrations measured in a mangrove site downstream a lateritic watershed were 17 times and 89 times greater than the mean concentrations at the urban site (Supplementary Table S3) (Robin et al, 2021). However, the studied mangrove sites were still characterized by higher concentrations of Cd, Cr, Fe, and Ni than many mangrove soils in the world such as in Australia, in New Zealand, in Mexico, in China, or in the Sundarbans (Supplementary Table S3) (Chaudhuri et al, 2014;Chowdhury et al, 2015;Bastakoti et al, 2019;Deng et al, 2019;Celis-Hernandez et al, 2020). Cr and Ni soil concentrations at the control site were much higher than the effect range median (ERM), which corresponds to the level of contamination of marine sediments, where biological toxicity effects are generally observed according to the National Oceanic and Atmospheric Administration (NOAA) (Table 1) (Buchman, 1999).…”

Section: Trace Metals Concentrations In Mangrove Soilsmentioning

confidence: 88%

“…TM can also be exported to mangrove trees or outside the mangrove forest in the dissolved phase with litterfall or tidal flushing and tidal pumping (Silva et al, 1998;Ferreira et al, 2007;Holloway et al, 2018Holloway et al, , 2016. In urban contexts, previous studies have measured moderate to highly TM contaminated mangrove soils due to urban inputs (Marx and McGowan, 2010;Singh et al, 2010;Bastakoti et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Trace Metals Concentrations In Mangrove Soilsmentioning

confidence: 88%

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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“…Generally speaking, REEs are correlated with organic matter in wetland soil solution or shallow groundwater, and different kinds of groups in organic matter have different function sites to combine with REEs [48]. In mangrove sediments, the organic matter (OM) acts as an important binding phase in adsorbing and depositing REEs [49]. However, in all urban mangroves, no positive correlations were detected for TOC and all REEs (Table 3).…”

Section: Distributions Of Rees In Urban Mangrove Sedimentsmentioning

confidence: 99%

Occurrence and Contamination of Rare Earth Elements in Urban Mangroves of Shenzhen, South China

et al. 2021

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Mangroves acted as sinks of terrestrial pollutants, but the occurrence and contamination of rare earth elements (REEs) in urban mangroves lacked systematic evaluation. In rapidly developing Shenzhen, China, four typical urban mangroves were selected to determine the REEs in urban mangroves, including Baguang mangrove (BGM) and Futian mangrove (FTM) featured with ecological preserve and central business district, respectively; Xixiang mangrove (XXM) and Shajing mangrove (SJM) both featured with industry district. The mean concentrations of total REEs (TREEs) in sediment (0–25 cm depth, μg g-1) were SJM (465.28) > FTM (411.25) > XXM (342.76) > BGM (118.63), with Ce to be the dominant REEs element. The depositions of REEs in urban mangroves were significantly affected by sediment sulfur accumulation and fine sediment, including silt and clay fractions. The main fractionation pattern of REEs in urban mangroves was the enrichment of light REEs (LREEs) and loss of heavy REEs (HREEs). Geo−accumulation index, modified degree of contamination, pollution load index, and potential ecological risk index showed the moderately contaminated level of REEs in FTM, followed by SJM and XXM, with uncontaminated level in BGM. This study provided important information on REEs in urban mangroves for pollution prevention and remediation in the future.

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“…Trace metals play a significant role in mangrove pollution and ecology, which can be absorbed by organisms or remain for a long time in sediments, becoming the main source of these pollutants for water and biota (BASTAKOTI et al al., 2019;SALIMI et al, 2019). Furthermore, trace metals can be released from mangrove sediments into water or biota if geochemical conditions are unfavorable.…”

Section: Introductionmentioning

confidence: 99%

Biogeochemistry, Geobotany and Conservation of Mangrove Forests from the Tinharé-Boipeba Environmental Protection Area, Baixo Sul da Bahia (BR): trace metals in leaves of Rhizophora mangle L. (Rhizophoraceae)

Goncalves¹,

Silva²,

Alva³

et al. 2022

JER

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This research aimed to investigate the quality of coastal surface waters and the levels of trace metals in the leaves of Rhizophora mangle L. in the Tinharé-Boipeba APA, Baixo Sul da Bahia, Brazil. The physicalchemical variables were measured in situ with the aid of a multiparameter probe and samples of Rhizophora leaves were collected at 10 sampling points for biometric, visual diagnosis and trace metal analysis (F-AAS). The results of the OD analyzes revealed changes in water quality (70% of the sampling points), associated with forms of land occupation and failures in environmental sanitation. Cluster analysis allowed the classification of samples into biogeochemical groups, according to trace element content and leaf biometry. This multivariate analysis suggested that the variation in leaf area can be explained, in part, by the levels of Cu and Zn, in addition to other ecological-environmental factors different from those investigated. The levels of trace metals in the leaves were considered normal and non-toxic and the levels of trace metals in the sediments of this APA did not characterize a polluted area, however water pollution demands coastal management, improvements in sanitation and environmental monitoring, and biomonitoring.

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Urban-rural gradients in the distribution of trace metals in sediments within temperate mangroves (New Zealand)

Cited by 10 publications

References 65 publications

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

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

Occurrence and Contamination of Rare Earth Elements in Urban Mangroves of Shenzhen, South China

Biogeochemistry, Geobotany and Conservation of Mangrove Forests from the Tinharé-Boipeba Environmental Protection Area, Baixo Sul da Bahia (BR): trace metals in leaves of Rhizophora mangle L. (Rhizophoraceae)

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