Petroleum hydrocarbon toxicity to corals: A review

Turner, Nicholas R.; Renegar, Dorothy-Ellen A.

doi:10.1016/j.marpolbul.2017.04.050

Cited by 89 publications

(56 citation statements)

References 58 publications

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“…Oil is a primary and necessary energy source, which is widely used in different fields, including industry, transport and daily human activities [1]. However, the widespread distribution and the overexploitation of hydrocarbons become a serious problem causing harmful impacts on the environment and health due to their toxicity and their carcinogenic and mutagenic properties [2].…”

Section: Introductionmentioning

confidence: 99%

Microbial Bioremediation of Petroleum Hydrocarbon– Contaminated Marine Environments

Mahjoubi¹,

Cappello²,

Souissi³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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Petroleum pollution has become a serious environmental problem, which can cause harmful damage to the environment and human health. This pollutant is introduced into the environment from both natural and anthropogenic sources. Various physicochemical and biological treatments were developed for the cleanup of contaminated environments. However, bioremediation is based on the metabolic capabilities of microorganisms, and it is considered as the most basic and reliable way to eliminate contaminants, particularly petroleum and its recalcitrant compounds. It is more effective alternative comparing to classical remediation techniques. A high diversity of potential hydrocarbon degrader's microorganisms was reported, and bacteria constitute the most abundant group, which has been well studied for hydrocarbon degradation. Several bioremediation approaches through bioaugmentation or/and biostimulation have been successfully applied. The interest on the optimizing of different parameters to achieve successful bioremediation technologies has been increased. In this chapter, we summarize the diversity and the hydrocarbon degradation potential of microorganism involved in the remediation of contaminated environments. We also present an overview of the efficient bioremediation strategies used for the decontamination of polluted marine environments.

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Section: Introductionmentioning

confidence: 99%

Microbial Bioremediation of Petroleum Hydrocarbon– Contaminated Marine Environments

Mahjoubi¹,

Cappello²,

Souissi³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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“…Turner and Renegar () suggested that oil spills near coral reefs are the only opportunities to assess the effects of acute oil contamination on corals in situ. To the best of our knowledge, no open/contained system has been constructed for studies on the effect of oil spills and chemical strategies used for remediation described in the literature.…”

Section: Discussionmentioning

confidence: 99%

“…The results obtained from the two validation experiments conducted here indicated that the system was successfully designed, and the biotic and abiotic conditions were reproducible between our independent replicates. Turner and Renegar (2017) suggested that oil spills near coral reefs are the only opportunities to assess the effects of acute oil contamination on corals in situ. To the best of our knowledge, no open/ contained system has been constructed for studies on the effect of oil spills and chemical strategies used for remediation described in the literature.…”

Section: Discussionmentioning

confidence: 99%

“…In view of the high demand for petroleum products, there is a need to increase crude-oil extraction, and accidental leaks can occur throughout the production chain from offshore platforms, distribution pipelines, and tankers. Corals can be impacted by these spills due to the rapid incorporation of the water-soluble fraction (WSF) of oil (NOAA, 2010;Turner & Renegar, 2017). Sublethal effects of oil contamination on corals can also include decreased growth rates (Guzmán & Holst, 1993;Guzmán, Jackson, & Weil, 1991;Prouty, Fisher, Demopoulos, & Druffel, 2014;Xu et al, 2018); the accumulation of polycyclic aromatic hydrocarbons (PAHs) in coral tissue, which can cause bleaching (Harrison, Collins, & Alexander, 1990;Ko, Chang, & Cheng, 2014); excessive mucus production (Hsing et al, 2013); shifts in the composition of the coral microbiome (Santos et al, 2015); and decreases in settlement and development of coral larvae (Epstein, Bak, & Rinkevich, 2000;Loya & Rinkevich, 1979).…”

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confidence: 99%

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Adaptable mesocosm facility to study oil spill impacts on corals

Silva

Duarte

Villela

et al. 2019

Ecology and Evolution

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Although numerous studies have been carried out on the impacts of oil spills on coral physiology, most have relied on laboratory assays. This scarcity is partly explained by the difficulty of reproducing realistic conditions in a laboratory setting or of performing experiments with toxic compounds in the field. Mesocosm systems provide the opportunity to carry out such studies with safe handling of contaminants while reproducing natural conditions required by living organisms. The mesocosm design is crucial and can lead to the development of innovative technologies to mitigate environmental impacts. Therefore, this study aimed to develop a mesocosm system for studies simulating oil spills with several key advantages, including true replication and the use of gravity to control flow‐through that reduces reliance on pumps that can clog thereby decreasing errors and costs. This adaptable system can be configured to (a) have continuous flow‐through; (b) operate as an open or closed system; (c) be fed by gravity; (d) have separate mesocosm sections that can be used for individual and simultaneous experiments; and (e) simulate the migration of oil from ocean oil spills to the nearby reefs. The mesocosm performance was assessed with two experiments using the hydrocoral Millepora alcicornis and different configurations to simulate two magnitudes of oil spills. With few exceptions, physical and chemical parameters remained stable within replicates and within treatments throughout the experiments. Physical and chemical parameters that expressed change during the experiment were still within the range of natural conditions observed in Brazilian marine environments. The photosynthetic potential ( F v /F m ) of the algae associated with M. alcicornis decreased in response to an 1% crude‐oil contamination, suggesting a successful delivery of the toxic contaminant to the targeted replicates. This mesocosm is customizable and adjustable for several types of experiments and proved to be effective for studies of oil spills.

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“…Over 50 million tons of crude oil have been spilled into the ocean and on land as a result of equipment failure, transportation accidents, and human tampering since the 1970s (Jernelöv 2010; ITOPF 2017). Such incidents negatively impact local ecosystems and decrease biodiversity in contaminated areas (Azevedo-Santos 2016; Das and Chandran 2011; Turner and Renegar 2017). As many of these compounds are carcinogens (e.g.…”

Section: Introductionmentioning

confidence: 99%