Temporal variations of trace metals and a metalloid in temperate estuarine mangrove sediments

Bastakoti, Ujwal; Robertson, John; Bourgeois, Carine; Marchand, Cyril

doi:10.1007/s10661-019-7916-z

Cited by 14 publications

(4 citation statements)

References 63 publications

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“…However, the concentration are similar to the ones measured in a semi-arid region located in the northeast coast of the state of Ceará, Brazil (Araújo et al 2012). On the other hand, the Fe concentrations found in the region of Boca de Caño are similar to other humid soils (Bastakoti et al 2019,Marchand et al 2006a,Otero et al 2017b). The soils from Punta Caimán region with low TOC content tend to display greater Fe HNO 3 concentrations.…”

Section: Discussionsupporting

confidence: 76%

“…The differences in Al concentration might be explained by the abundance of aluminosilicates in sediments and by secondary mineral precipitation and dissolution due to in situ alteration processes. Fe concentrations observed in Punta Caimán soils are greater than the concentrations found in mangrove regions located nearby (Otero et al 2017a) and in other countries (Bastakoti et al 2019,Marchand et al 2006b). However, the concentration are similar to the ones measured in a semi-arid region located in the northeast coast of the state of Ceará, Brazil (Araújo et al 2012).…”

Section: Discussionmentioning

confidence: 59%

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Nutrients and trace elements of semi-arid dwarf and fully developed mangrove soils, northwestern Venezuela

Romero‐Mujalli

Meléndez

2023

Environ Earth Sci

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Mangrove forests are characterized by a high carbon storage capacity. Anthropogenic activities and the climate change are threatening the stability of these ecosystems, specially those that are surviving on extreme environmental conditions, representing the most susceptible groups. This study aims to understand the geochemical differences of soils of mangrove forest with diverse degree of development of Rhizophora mangle and Avicennia germinans, located in two semi-arid regions from the Falcon state, Venezuela. The soil samples were collected in Punta Caimán region (dwarf mangroves of less than 2 meters height) and Boca de caño lagoon (fully developed mangroves of up to 8 meters height). The trace elements and macronutrients were determined in two sequential extraction, first with 1M HCl followed by an extraction with ultrapure grade $$HNO_{3}$$ H N O 3 . Results showed that, in general, dwarf mangroves have limited capability to accumulate organic matter in the soil (average TOC of $$0.6 \pm 0.2\%$$ 0.6 ± 0.2 % ) and that the sampled surface soils from the dwarf mangrove region had no differences with deeper material. On the other hand, the TOC of soils dominated by developed mangroves is $$6 \pm 2 \%$$ 6 ± 2 % , representative of semi-arid conditions. Moreover, the soils dominated by dwarf mangroves are characterized high concentrations of trace elements related to the chalcophile group. The difference in soil chemistry between Rhizophora mangle and Avicennia germinans becomes significant when mangroves are fully developed. Finally, soils of dwarf mangrove forests presented a greater concentration of trace elements than soils of fully developed mangroves, which might be due to a different sediment source, to an anthropogenic influence or to the difference in organic matter.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 59%

Nutrients and trace elements of semi-arid dwarf and fully developed mangrove soils, northwestern Venezuela

Romero‐Mujalli

Meléndez

2023

Environ Earth Sci

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“…Iron and its oxides in wetland soil would be different in regions due to variously environmental and climate conditions (Jiang et al, 2011). The contents of Fe T in some wetland soils have reported in the previous studies, e.g., 22018.5-27551.9 mg•kg −1 in mangrove sediment of Manukau Harbour, New Zealand (Bastakoti et al, 2019); 27780-29700 mg•kg −1 in Jiaozhou Bay coastal wetland, China (Yan et al, 2020); approximately 13067.0 mg•kg −1 in Sanjiang Plain wetland, China (Huo et al, 2011). In the present study, the means of Fe T were 20732.3-39879.3 mg•kg −1 in the Yellow River Estuary wetland soil, with a higher value compared with those in other wetlands.…”

Section: Discussionmentioning

confidence: 90%

Spatial distribution of soil iron across different plant communities along a hydrological gradient in the Yellow River Estuary wetland

Sun

Qin

et al. 2022

Front. Ecol. Evol.

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Iron is an important element and its biogeochemical processes are vital to the matter and energy cycles of wetland ecosystems. Hydrology greatly controls characteristics of soil property and plant community in wetlands, which can regulate the behavior of iron and its oxides. However, it remains unclear how the spatial distribution of iron and its forms in estuarine wetlands responses to hydrological conditions. Five typical plant communities along a naturally hydrological gradient in the Yellow River Estuary wetland, including Phragmites australis in freshwater marsh (FPA), Phragmites australis in salt marsh (SPA), Tamarix chinensis in salt marsh (TC), Suaeda salsa in salt marsh (SS) and Spartina alterniflora in salt marsh (SA), as sites to collect soil samples. The total iron (FeT) and three iron oxides (complexed iron, Fep; amorphous iron, Feo; free iron, Fed) in samples were determined to clarify the spatial distribution of iron and explore its impact factors. The mean contents of FeT, Fep, Feo and Fed were 28079.4, 152.0, 617.2 and 8285.3 mg⋅kg–1 of soil at 0–40 cm depth in the different sites, respectively. The means were significantly different across communities along the hydrological gradient, with the higher values for SA on the upper intertidal zone and for SPA on the lower intertidal zone, respectively. Iron and its forms were positively correlated with the total organic carbon (TOC), dissolved organic carbon (DOC), total nitrogen (TN) and clay, and negatively correlated with electrical conductivity (EC). The indexes of iron oxides (Fep/Fed, Feo/Fed and Fed/FeT) were also different across communities, with a higher value for SA, which were positively correlated with soil water content (WC) and TOC. The results indicate that a variety of plant community and soil property derived from the difference of hydrology might result in a spatial heterogeneity of iron in estuarine wetlands.

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“…The concentrations of heavy metals in the sediments of Dongzhai Harbor wetland in this study were all much lower than those in the wetland sediments of Qi' ao Island, Futian mangrove, Leizhou Peninsula, Jinjiang Estuary and Jiulong River Estuary in China (Table 4). In addition, the concentrations of heavy metals in Dongzhai Harbor wetland were similarly lower than wetlands such as those in the east and west coasts in India, Sydney estuary in Australia, Mango in New Zealand, and Ho Chi Minh City in Vietnam [3,4,6,13,[48][49][50][51][52] (Table 4). In the horizontal direction, the background values of heavy metals in the soils of Hainan Island were used as a criterion to deduce that Cd, Cr, Cu, Ni, Zn and Co were exceeded in the sediments [53].…”

Section: Contamination Status and Potential Ecological Riskmentioning

confidence: 97%

Spatial Distribution and Ecological Risk Assessment of Heavy Metals in the Sediment of a Tropical Mangrove Wetland on Hainan Island, China

Mao

Zhang

et al. 2022

Water

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Mangroves have a high ecological service value and play an important role in achieving carbon neutrality. However, mangrove wetland soil quality is constantly being affected, and the ecological services provided are gradually declining due to the threat of various pollutants, especially heavy metal pollution. Exploring the sources and ecological risks of heavy metals in mangrove sediments will be helpful in improving mangrove protection. In 2020, sediments were collected from terrestrial and aquatic areas of Dongzhai Harbor mangrove wetland in Hainan, China, and were analyzed for the concentrations of nine heavy metals (As, Cd, Cr, Cu, Hg, Pb, Ni, Zn, Co). The results showed that there were obvious spatial distributions of heavy metals in sediments. The high concentrations of heavy metals occurred largely in terrestrial areas and in 0–20 cm of the sediment surface layer. Correlation analysis and cluster analysis indicated that As mainly originated from ships and aquaculture in the harbor waters, Cd and Hg from agriculture, Cr, Cu, Ni, Zn and Co from the weathering of parent rocks, and Pb from soot emitted from metal smelters and automobile exhaust. The individual potential ecological risk index (Eir) indicated that contaminating elements were mainly Cd and Hg. The potential ecological risk index (RI) and multiple probable effect concentrations quality (mPECQs) indicated that the areas with high heavy metal concentration and the 0–20 cm range of sediment surface layer were more susceptible to heavy metal contamination. Although there were no obvious ecological risks in the area, these results could facilitate the understanding of the distribution of heavy metal pollution in mangroves and provide information to achieve sustainable development of mangroves.

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Temporal variations of trace metals and a metalloid in temperate estuarine mangrove sediments

Cited by 14 publications

References 63 publications

Nutrients and trace elements of semi-arid dwarf and fully developed mangrove soils, northwestern Venezuela

Nutrients and trace elements of semi-arid dwarf and fully developed mangrove soils, northwestern Venezuela

Spatial distribution of soil iron across different plant communities along a hydrological gradient in the Yellow River Estuary wetland

Spatial Distribution and Ecological Risk Assessment of Heavy Metals in the Sediment of a Tropical Mangrove Wetland on Hainan Island, China

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