Assessment of heavy metal contamination from penguins and anthropogenic activities on Fildes Peninsula and Ardley Island, Antarctic

Chu, Zhuding; Yang, Zhongkang; Wang, Yuhong; Sun, Liguang; Yang, Wenqing; Yang, Liwei; Gao, Yi

doi:10.1016/j.scitotenv.2018.07.152

Cited by 52 publications

(21 citation statements)

References 40 publications

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“…7. Dendrogram helps with investigation and understanding of the sampling sites with respect to the analyzed trace element concentrations and their sources 29 . The dendrogram of the sampling sties show two clusters of sampling sites with further sub-clusters.…”

Section: Resultsmentioning

confidence: 99%

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Shirani

Afzali

Jahan

et al. 2020

Sci Rep

103

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Jazmurian playa was an ephemeral lake with a large catchment in southeast iran, which dried up over the last 10 years as a result of prolonged drought. As the lake was recipient of incoming industrial water with trace metals deposited to the sediment, the dust is the cause of environmental concern of the region and requires evaluation and better management. The aim of this study was to evaluate the environmental and ecological pollution of Jazmurian playa. Hence, 24 collected surface sedimentary samples were analyzed with ICP-OES. The environmental pollution indices including degree of contamination (cd), geoaccumulation index (igeo), enrichment factor (ef), pollution load index (PLI) and potential ecological risk (PER) were determined. The study revealed moderately to strongly pollution levels of pb, ni and Al, while Dy, pb, Y, Yb, Sm, te, U, cu, Mn, Sc represented moderate pollution. The EF values indicated four sites were highly enriched with Dy, Pb and Ni. The PER results showed high risk for four sites and considerable risk for others. Cluster analysis illustrated interconnection between the contaminants and the sites with major pollution at six sites. Obviously, climate change has considerable complex environmental impacts through transformation of local water and sediment pollution problem.

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Section: Resultsmentioning

confidence: 99%

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Shirani

Afzali

Jahan

et al. 2020

Sci Rep

103

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“…During the summer breeding period, abundant penguin guano washes into nearby lakes and ponds and leaves distinct ornithogenic signatures in the sediments (Sun et al 2000). In contrast, the lakes and ponds on Fildes Peninsula, including our study site YO, are relatively pristine and not affected by penguin activity (Chu et al 2019). The YO lake covers an area of about 9,000 m 2 and locates about 200 m from the nearest coastline of the Great Wall Bay.…”

Section: Study Area and Sample Collectionmentioning

confidence: 89%

Diverse Biotransformation of Sulfur in Antarctic Lake Sediments

Song

Huang

Chen

et al. 2021

Preprint

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Microbial communities, sulfur isotope of sulfides (δ34SAVS and δ34SCRS) and sulfur and oxygen isotopes of sulfate (δ34SSO4 and δ18OSO4) in sediments were analyzed to study the biotransformation of sulfur in a penguin-affected lake Y2 and a pristine YO from Fildes Peninsula, Antarctic Peninsula. The microbial communities in Y2 were mainly associated with penguin activities, while those in YO were limited by nutrients. The much enriched δ34SSO4 recorded at depth of 30, 41 and 52 cm in Y2 indicates very strong sulfate reduction therein. The sulfur-degrading bacteria Pseudomonas in 0–23 cm of Y2 was 3.5 times as abundant as that of sulfur oxidizing bacteria (SOB), indicating remarkable remineralization of organic sulfur. While abundant SOB and 34S-depleted sulfate indicate considerable sulfur oxidation in 34–56 cm layer in Y2. In YO sediments, the highest abundance of Desulfotalea and the most enriched δ34SSO4 (35.2‰) and δ34SCRS (2.5‰) indicate strongest sulfate reduction in 28 cm layer. High abundance of Pseudomonas indicates active remineralization of organic sulfur in 3–5 cm layer in YO. While the medium δ34SSO4 and considerable abundance of SOB and SRB indicate concurrence of sulfur oxidation and sulfate reduction in other layers in YO. Our results show that high level of organic matter inputs from penguin populations support the diverse microbial community and biotransformation of sulfur in freshwater ecosystems in Antarctica.

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“…The sources of the four metals in this group were similar. It was previously found that As was related to chemical and steel industries and that the chemical properties of Sb were similar to As [ 2 , 49 ]. The content of Sb was infinitesimal in nature with background values of less than 1 mg/kg.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Heavy Metal Sources in the Soil of Riverbanks Across an Urbanization Gradient

Zuo

Dai

et al. 2018

IJERPH

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Regional soil quality issues arising from rapid urbanization have received extensive attention. The riverbank that runs through a city is representative of urbanization gradient transformation. Thirty soil samples in the Yangtze River Delta urban agglomeration were collected and analyzed for the concentrations of seven analytes. Correlation, principle component analysis, cluster analysis and GeoDetector models suggested that the four groups (Cr-Ni-Cu, Cu-Zn-As-Sb, Cd and Pb) shared the same sources in the core urban region; five groups (Cr-Ni-Cu-Zn, As, Cd, Sb and Pb) in the suburbs and three groups (Cr-Ni, Cu-Zn-Cd-Sb-Pb and As) in the exurbs. GeoDetector methods not only validated the results of the three other methods, but also provided more possible impact factors. Besides the direct influences, the interaction effects among factors were quantified. Interactive combination with strong nonlinear increment changed from between-two-weak factors in the central region to between-strong-and-weak factors in the suburbs. In the exurbs, the stronger interaction effects were observed between strong and weak factors. Therefore, the GeoDetector model, which provided more detailed information of artificial sources could be used as a tool for identifying the potential factors of toxic elements and offering scientific basis for the development of subsequent pollution reduction strategies.

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Assessment of heavy metal contamination from penguins and anthropogenic activities on Fildes Peninsula and Ardley Island, Antarctic

Cited by 52 publications

References 40 publications

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Diverse Biotransformation of Sulfur in Antarctic Lake Sediments

Analysis of Heavy Metal Sources in the Soil of Riverbanks Across an Urbanization Gradient

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