Toxicity of manganese to various life stages of selected marine cnidarian species

Summer, Kate; Reichelt‐Brushett, Amanda; Howe, Pelli Louise

doi:10.1016/j.ecoenv.2018.09.116

Cited by 30 publications

(16 citation statements)

References 55 publications

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“…The fulfillment of test validity criteria (Question 2) is weighted heavily, similarly to the Eco‐QESST method (Breton et al, 2009 ). Efforts to establish validity criteria for coral studies have been made (Summer et al, 2019 ), in particular, control responses for larval fertilization and larval settlement should exceed 80% and 70%, respectively (Gissi et al, 2017 ; Negri et al, 2018 ). However, these particular criteria were not relevant to the majority of studies assessed.…”

Section: Discussionmentioning

confidence: 99%

“…Bleaching (expulsion of symbiotic algae) is a stress response that can lead to a coral's reduced ability to survive, grow, or reproduce and is thus of ecological relevance (Anthony et al, 2009 ; Douglas, 2003 ; Hughes et al, 2017 , 2019 ). Bleaching can be quantified in numerous ways including algal cell counts, chlorophyll a content, or visually by examination of coral pigment, for example, the Coral Watch coral health chart (Summer et al, 2019 ). Nonecologically relevant endpoints are sublethal responses for which a clear link to an ecologically relevant effect has yet to be demonstrated (e.g., morphological changes, behavioral responses, and impacts on the photosynthetic abilities of the symbiont algae).…”

Section: Methodsmentioning

confidence: 99%

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Coral Ecotoxicological Data Evaluation for the Environmental Safety Assessment of Ultraviolet Filters

Burns

Davies

2021

Enviro Toxic and Chemistry

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There is growing interest in the environmental safety of ultraviolet (UV) filters found in cosmetic and personal care products (CPCPs). The CPCP industry is assessing appropriate environmental risk assessment (ERA) methods to conduct robust environmental safety assessments for these ingredients. Relevant and reliable data are needed for ERA, particularly when the assessment is supporting regulatory decision‐making. In the present study, we apply a data evaluation approach to incorporate nonstandard toxicity data into the ERA process through an expanded range of reliability scores over commonly used approaches (e.g., Klimisch scores). The method employs an upfront screening followed by a data quality assessment based largely on the Criteria for Reporting and Evaluating Ecotoxicity Data (CRED) approach. The method was applied in a coral case study in which UV filter toxicity data was evaluated to identify data points potentially suitable for higher tier and/or regulatory ERA. This is an optimal case study because there are no standard coral toxicity test methods, and UV filter bans are being enacted based on findings reported in the current peer‐reviewed data set. Eight studies comprising nine assays were identified; four of the assays did not pass the initial screening assessment. None of the remaining five assays received a high enough reliability score ( R n ) to be considered of decision‐making quality (i.e., R1 or R2). Four assays were suitable for a preliminary ERA (i.e., R3 or R4), and one assay was not reliable (i.e., R6). These results highlight a need for higher quality coral toxicity studies, potentially through the development of standard test protocols, to generate reliable toxicity endpoints. These data can then be used for ERA to inform environmental protection and sustainability decision‐making. Environ Toxicol Chem 2021;40:3441–3464. © 2021 Personal Care Products Council. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Coral Ecotoxicological Data Evaluation for the Environmental Safety Assessment of Ultraviolet Filters

Burns

Davies

2021

Enviro Toxic and Chemistry

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“…The concentration of Cu in the mine tailings and in the mixture of mine tailings and Repparfjord sediment exceeded the threshold values for maximum acceptable concentration under EQS (MAC-EQS) for acute toxicity. Although there are no EQS for Ba and Mn, there has recently been increased focus on their effects on the aquatic environment with suggestions of implementing EQS for Ba in the EU water framework [54], and EQS for Mn in guidelines for Australia and New Zealand [55].…”

Section: Metal Concentrationsmentioning

confidence: 99%

Tailored Leaching Tests as a Tool for Environmental Management of Mine Tailings Disposal at Sea

Pedersen

Lejon

Evenset

2022

JMSE

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The expanding human activities in coastal areas increase the need for developing solutions to limit impacts on the marine environment. Sea disposal affects the marine environment, but despite the growing knowledge of potential impacts, there are still no standardized leaching tests for sea disposal. The aim of this study was to contribute to the development of leaching tests, exemplified using mine tailings, planned for submarine disposal in the Repparfjord, Norway. The mine tailings had elevated concentrations of Ba, Cr, Cu, Mn and Ni compared to background concentrations in the Repparfjord. Variables known to affect metal leaching in marine environments (DOC, pH, salinity, temperature, aerated/anoxic) were studied, as was the effect of flocculant (Magnafloc10), planned to be added prior to discharge. Stirred/non-stirred setups simulated the resuspension and disposal phases. Leaching of metals was below 2% in all experiments, with the highest rate observed for Cu and Mn. Multivariate analysis revealed a different variable importance for metals depending on their association with minerals. Higher leaching during resuspension than disposal, and lower leaching with the addition of Magnafloc10, especially for Cu and Mn, was observed. The leaching tests performed in this study are transferable to other materials for sea disposal.

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“…In marine coastal ecosystems such as estuaries, few studies reported Mn as a potentially toxic element since the concentrations are generally low in these ecosystems ( Hadlich et al, 2018 ; McKinley et al, 2019 ). However, recent studies worldwide, motivated by increasingly large inputs of Mn from human activities, such as mining activity, mining waste, and urban waste, have reported Mn as a potential contaminant for several aquatic species and, thus, its toxicity ( Gabriel et al, 2020a ; Harford et al, 2015 ; McKinley et al, 2019 ; Squadrone et al, 2016 ; Summer et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Manganese: The overlooked contaminant in the world largest mine tailings dam collapse

Queiroz

Ying

Abernathy

et al. 2021

Environment International

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Manganese (Mn) is an abundant element in terrestrial and coastal ecosystems and an essential micronutrient in the metabolic processes of plants and animals. Mn is generally not considered a potentially toxic element due to its low content in both soil and water. However, in coastal ecosystems, the Mn dynamic (commonly associated with the Fe cycle) is mostly controlled by redox processes. Here, we assessed the potential contamination of the Rio Doce estuary (SE Brazil) by Mn after the world’s largest mine tailings dam collapse, potentially resulting in chronic exposure to local wildlife and humans. Estuarine soils, water, and fish were collected and analyzed seven days after the arrival of the tailings in 2015 and again two years after the dam collapse in 2017. Using a suite of solid-phase analyses including X-ray absorption spectroscopy and sequential extractions, our results indicated that a large quantity of Mn II arrived in the estuary in 2015 bound to Fe oxyhydroxides. Over time, dissolved Mn and Fe were released from soils when Fe III oxyhydroxides underwent reductive dissolution. Due to seasonal redox oscillations, both Fe and Mn were then re-oxidized to Fe III , Mn III , and Mn IV and re-precipitated as poorly crystalline Fe oxyhydroxides and poorly crystalline Mn oxides. In 2017, redox conditions (Eh: −47 ± 83 mV; pH: 6.7 ± 0.5) favorable to both Fe and Mn reduction led to an increase (~880%) of dissolved Mn (average for 2015: 66 ± 130 μg L −1 ; 2017: 582 ± 626 μg L −1 ) in water and a decrease (~75%, 2015: 547 ± 498 mg kg −1 ; 2017: 135 ± 80 mg kg −1 ) in the total Mn content in soils. The crystalline Fe oxyhydroxides content significantly decreased while the fraction of poorly ordered Fe oxides increased in the soils limiting the role of Fe in Mn retention. The high concentration of dissolved Mn found within the estuary two years after the arrival of mine tailings indicates a possible chronic contamination scenario, which is supported by the high levels of Mn in two species of fish living in the estuary. Our work suggests a high risk to estuarine biota and human health due to the rapid Fe and Mn biogeochemical dynamic within the impacted estuary.

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Toxicity of manganese to various life stages of selected marine cnidarian species

Cited by 30 publications

References 55 publications

Coral Ecotoxicological Data Evaluation for the Environmental Safety Assessment of Ultraviolet Filters

Coral Ecotoxicological Data Evaluation for the Environmental Safety Assessment of Ultraviolet Filters

Tailored Leaching Tests as a Tool for Environmental Management of Mine Tailings Disposal at Sea

Manganese: The overlooked contaminant in the world largest mine tailings dam collapse

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