Assessing metal contaminants in Antarctic soils using diffusive gradients in thin-films

Koppel, Darren J.; Price, Gwilym A.V.; Brown, Kathryn; Adams, Merrin S.; King, Catherine K.; Gore, Damian B.; Jolley, Dianne F.

doi:10.1016/j.chemosphere.2020.128675

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…Population growth may have been inhibited by a low-level toxic effect from concentrations of water-soluble metals naturally present in the soils. Metal concentrations in the soil elutriate were not measured; however, concentrations in the source soils (Table 1 ) were comparable to other non-contaminated sites in East Antarctica (Deprez et al 1999 ; Snape et al 2001 ; Koppel et al 2021 ).…”

Section: Discussionsupporting

confidence: 66%

Population growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media

McCarthy,

Brown,

King

et al. 2024

Environ Sci Pollut Res

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Terrestrial microinvertebrates provide important carbon and nutrient cycling roles in soil environments, particularly in Antarctica where larger macroinvertebrates are absent. The environmental preferences and ecology of rotifers and tardigrades in terrestrial environments, including in Antarctica, are not as well understood as their temperate aquatic counterparts. Developing laboratory cultures is critical to provide adequate numbers of individuals for controlled laboratory experimentation. In this study, we explore aspects of optimising laboratory culturing for two terrestrially sourced Antarctic microinvertebrates, a rotifer (Habrotrocha sp.) and a tardigrade (Acutuncus antarcticus). We tested a soil elutriate and a balanced salt solution (BSS) to determine their suitability as culturing media. Substantial population growth of rotifers and tardigrades was observed in both media, with mean rotifer population size increasing from 5 to 448 ± 95 (soil elutriate) and 274 ± 78 (BSS) individuals over 60 days and mean tardigrade population size increasing from 5 to 187 ± 65 (soil elutriate) and 138 ± 37 (BSS) over 160 days. We also tested for optimal dilution of soil elutriate in rotifer cultures, with 20–80% dilutions producing the largest population growth with the least variation in the 40% dilution after 36 days. Culturing methods developed in this study are recommended for use with Antarctica microinvertebrates and may be suitable for similar limno-terrestrial microinvertebrates from other regions.

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Section: Discussionsupporting

confidence: 66%

Population growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media

McCarthy,

Brown,

King

et al. 2024

Environ Sci Pollut Res

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“…Similarly, in a study investigating soils around anthropogenically impacted sites, copper and zinc in waterlogged soil porewaters had DGT Chelex labile concentrations up to 9.9 µg Cu/L and up to 350 µg Zn/L, respectively. In contrast, cadmium, chromium, and lead were present in the soils but not labile to the porewaters (Koppel, Price, et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

High Sensitivity of the Antarctic Rotifer Adineta editae to Metals and Ecological Relevance in Contaminated Site Risk Assessments

Brown

Koppel

Price

et al. 2023

Enviro Toxic and Chemistry

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Anthropogenic activities in Antarctica have led to contamination of terrestrial sites, and soils in ice‐free areas have elevated concentrations of metals, particularly around current and historic research stations. Effective management of Antarctic contaminated sites depends on the assessment of risks to a representative range of native terrestrial species. Bdelloid rotifers are an abundant and biodiverse component of Antarctic limnoterrestrial communities and play a key role in nutrient cycling in Antarctic ecosystems. The present study investigates the toxicity of five metals (cadmium, copper, nickel, lead, and zinc) to the endemic bdelloid rotifer Adineta editae, both singly and in metal mixtures. Based on the concentrations tested, zinc was the most toxic metal to survival with a 7‐day median lethal concentration (LC50) of 344 µg Zn/L, followed by cadmium with a 7‐day LC50 of 1542 µg Cd/L. Rotifers showed high sensitivity using cryptobiosis (chemobiosis) as a sublethal behavioral endpoint. Chemobiosis was triggered in A. editae at low metal concentrations (e.g., 6 µg/L Pb) and is likely a protective mechanism and survival strategy to minimize exposure to stressful conditions. Lead and copper were most toxic to rotifer behavior, with 4‐day median effect concentrations (EC50s) of 18 and 27 µg/L, respectively, followed by zinc and cadmium (4‐day EC50 values of 52 and 245 µg/L, respectively). The response of rotifers to the metal mixtures was antagonistic, with less toxicity observed than was predicted by the model developed from the single‐metal exposure data. The present study provides evidence that this bdelloid rotifer represents a relatively sensitive microinvertebrate species to metals and is recommended for use in contaminant risk assessments in Antarctica. Environ Toxicol Chem 2023;42:1409–1419. © 2023 SETAC

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“…Heavy metals are regarded as one of the sources of pollution in waste and wastewater ( 1 ). The deposition and proliferation of heavy metals have seriously affected the ecosystem ( 1 , 2 ). Chromium is the most abundant and natural element present in rocks, soil and living things ( 3 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of hexavalent chromium on growth performance and metabolism in broiler chicken

Zhuo,

Wang,

Ali

et al. 2023

Front. Vet. Sci.

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Hexavalent chromium Cr (VI) is one of the most hazardous heavy metals in the environment and is toxic to living organisms causing tissue damage, disruption of the intestinal microbiota and cancer. However, there is little information on the relationship between the Cr (VI) and broiler chickens. The current study was performed to investigate the effect of Cr (VI) on growth performance, serum biochemical analysis, histopathological observations, and metabolomics analysis in broilers. Results show that Cr (VI) exposure significantly decreased the body weight (p < 0.01) and caused liver damages in broilers. With the extension of Cr (VI) action time, the liver appeared obvious pathological changes, including hepatic cord disorder, incomplete hepatocyte additionally, decreased serum biochemical indices of calcium (Ca), phosphorus (P), total protein (TP), phosphatase (ALP), and globin (GLB) significantly (p < 0.01). Moreover, metabolomics analysis indicated that 29 differential metabolites were identified, such as phytosphingosine, L-Serine, 12, 13-DHOME, Alpha-dimorphecolic acid, L-Methionine, L-Phenylalanine, 3-Dehydroshikimate, L-Tyrosine, and N-Acetyl-L-phenylalanine were significantly decreased under the action of Cr (VI) (p < 0.05). These 29 differential metabolites are mainly involved in 35 metabolic pathways, such as aminoacyl-tRNA biosynthesis, phenylalanine metabolism, sphingolipid, and linoleic metabolism. The study revealed that exposure to Cr (VI) resulted in a decrease in growth performance and metabolism, with the hazards and toxicity in broiler chicken. The findings provided new insight and a comprehensive understanding of the relationship between Cr (VI) and broiler chickens.

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Assessing metal contaminants in Antarctic soils using diffusive gradients in thin-films

Cited by 8 publications

References 47 publications

Population growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media

Population growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media

High Sensitivity of the Antarctic Rotifer Adineta editae to Metals and Ecological Relevance in Contaminated Site Risk Assessments

Effect of hexavalent chromium on growth performance and metabolism in broiler chicken

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