Spatial variation of heavy metals in sediments within a temperate mangrove ecosystem in northern New Zealand

Bastakoti, Ujwal; Robertson, John; Alfaro, Andrea C.

doi:10.1016/j.marpolbul.2018.08.012

Cited by 32 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High values of CF accompanied by PLI values in locations 1 and 5 indicate deterioration of sediment features and accumulation of these metal ions in mangrove habitat [ 57 ]. The level of bioaccumulation of these trace metals is closely related to the mobility and availability of these metals, in addition to the chemical and physical features of the sediments, such as organic contents, sediment grain size, pH value, and their redox potential [ 58 , 59 , 60 ].…”

Section: Resultsmentioning

confidence: 99%

Eco-Physiological Responses of Avicennia marina (Forssk.) Vierh. to Trace Metals Pollution via Intensifying Antioxidant and Secondary Metabolite Contents

et al. 2023

View full text Add to dashboard Cite

Mangrove is one of the most precious ecosystems with the greatest losses due to climate change, human activities, and pollution. The objective of this study is to assess the accumulation and distribution of some trace metals (Cu, Cd, Ni, Pb, and Zn) in sediments and Avicennia marina roots and leaves and to discuss the antioxidant potential of A. marina under metallic pollution stress. Sediments, leaf, and root samples of A. marina were collected from five sites along the Red Sea Coast of Egypt. Several ecological pollution indices, including the geo accumulation index (Igeo), contamination factor (CF), pollution load index (PLI), bioconcentration factor (BCF), and translocation factor (TF), were used to assess the pollution load. Cu, Cd, Ni, Pb, and Zn average concentrations in sediments were 167.4, 0.75, 110.65, 39.79, and 220 μg g−1, respectively, and the average values of these metals in A. marina roots were 44.9, 0.5, 87.96, 39.02, and 54.68 μg g−1, respectively, while in leaves their concentration were 50.46, 0.5572, 88.24, 40.08, and 56.08 μg g−1, respectively. The values of the Igeo, CF, and PLI index indicated that location 1 and 5 are moderate-to-heavily contaminated sites. On the other hand, leaves and roots of A. marina grown in polluted locations 1 and 5 showed high accumulation of malondialdehyde (MDA), low chlorophyll a and chlorophyll b contents concomitant with a decrease in total soluble sugars. High total antioxidant capacity was associated with a significant increase in activity levels of antioxidant enzymes (Catalase, Polyphenol oxidase, Polyphenol peroxidase, and Ascorbic acid oxidase), accumulation of secondary metabolites (total phenols, flavonoids, and tannins), and proline and carotenoids content increase. Overall, the present study suggests that the mangrove habitat of the Egyptian Red Sea coast is under the stress of anthropogenic activities, which necessitates a conservation plan to avoid further contamination and protect the unique biota of this distinctive habitat.

show abstract

Section: Resultsmentioning

confidence: 99%

Eco-Physiological Responses of Avicennia marina (Forssk.) Vierh. to Trace Metals Pollution via Intensifying Antioxidant and Secondary Metabolite Contents

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Additionally, the location of this mangrove in the middle section of the BTS implies that hydraulic energy conditions are low (Lessa et al, 2000), thus promoting the deposit of fine particles and, consequently, the accumulation of metals (Kumar and Ramanathan, 2015;Bastakoti et al, 2018). The results from partitioning demonstrated that the majority of Cu is found in the oxidizable fraction, consistently with the high tendency of Cu to form stable complexes with organic matter, even forming strong complexes in reducing conditions (Zhou et al, 2010;Chakraborty et al, 2015), or/and to precipitate as sulfides in sulfate-reducing environments (Huerta-Díaz and Morse, 1992;Otero et al, 2000a;Otero et al, 2000b;Thanh-Nho et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Impact of Seasonality on Copper Bioavailaility to Crabs (Ucides cordatus, Linnaeus, 1763) in Mangrove Soils of Todos os Santos Bay (Bahia, North Eastern Brazil)

Ramos,

Nóbrega,

Ferreira

et al. 2023

Span. J. Soil Sci.

View full text Add to dashboard Cite

Crab and soil samples were seasonally collected at four mangrove sites (Cacha Prego, CP; Ponta Grossa, PG; Ilha de Maré, IM; and Pitinga, PT) in Todos os Santos Bay, in NE Brazil. Total Cu levels in soils ranged from 2.5 to 89.4 mg kg−1, while in crab organs (muscles, hepatopancreas, and gills), Cu ranged from 20 to 1,320 mg kg−1, with the highest concentrations found in the Ilha de Maré population, where soils showed a clear Cu enrichment. Total Cu content did not explain the abnormally high Cu concentrations observed in crabs from Pitinga, where total content in soil was low. Geochemical partitioning indicated that most of the potentially bioavailable Cu was found in the oxidizable fractions, pyrite and organic matter. Pyrite oxidation during the dry season led to increased Cu bioavailability. This process was of relevance in soils of the Pitinga mangrove, where sulfide oxidation led to soil acidification and to an increase in Cu associated with the most labile fractions.

show abstract

“…Cadmium toxicity results from its bioaccumulation and absorption in tissues and has toxicological effects on kidney, liver and gastrointestinal tracts [12]. Potentially toxic elements even in low doses pose a major threat and most of these metals enter the environment through mining and smelting processes and combustion of fuels [13]. Some authors [8] observed that potentially toxic elements enter into a water supply by industrial or consumer waste even from acidic rain breaking down soil and releasing potentially toxic elements into streams, lakes, rivers, ground water.…”

Section: Introductionmentioning

confidence: 99%

Human Health and Ecological Risks Assessment of Potentially Toxic Elements in Automobile and Non-Erosive Sites in Ebonyi State, Nigeria

Nworie

Frank²,

Omaka³

et al. 2022

View full text Add to dashboard Cite

Global concern is on the rise of ecological and human health risk associated with unregulated and unabated discharge of potentially toxic elements (PTEs) into the environment. This work investigated the concentration of PTEs, evaluated the sources and level of soil pollution and analyzed the level of ecological and human health risks. The study involves sample size (n =120) of one hundred and twenty soil samples collected from six spatial different areas of Ebonyi State. Determination of the concentration of the PTEs was executed using atomic absorption spectrophotometry. The degree of discrete distribution of the concentration of PTEs and relationship among them was achieved using descriptive statistical analysis and correlation coefficient. Automobile sites based on the result proved to have higher concentrations of PTEs in relation to nonerosive soils. The mean concentration of Zn, Cd, Pb, Ni, Fe and Cu were 689.48, 0.649, 694, 48.84, 6039.82 and 91.02 mg/kg respectively in automobile sites while in nonerosive soils, it was 8.33, 0.26, 2.82, 1.21, 11.99 and 4.36 mg/kg respectively. The overall ecological risk index and degree of contamination are 317.21 and 59.69 for automobile sites and 72.22 and 2.76 for non –erosive sites respectively. This indicates automobile sites to be of high degree of contamination and of high ecological risk. Evaluation of carcinogenic risk shows that Zn, Cu, Ni and Pb are of high cancer risks in the automobile sites for children and adults. Among all the studied PTEs, Zn and Pb poses significant health and ecological risks.

show abstract

Spatial variation of heavy metals in sediments within a temperate mangrove ecosystem in northern New Zealand

Cited by 32 publications

References 52 publications

Eco-Physiological Responses of Avicennia marina (Forssk.) Vierh. to Trace Metals Pollution via Intensifying Antioxidant and Secondary Metabolite Contents

Eco-Physiological Responses of Avicennia marina (Forssk.) Vierh. to Trace Metals Pollution via Intensifying Antioxidant and Secondary Metabolite Contents

Impact of Seasonality on Copper Bioavailaility to Crabs (Ucides cordatus, Linnaeus, 1763) in Mangrove Soils of Todos os Santos Bay (Bahia, North Eastern Brazil)

Human Health and Ecological Risks Assessment of Potentially Toxic Elements in Automobile and Non-Erosive Sites in Ebonyi State, Nigeria

Contact Info

Product

Resources

About