Vertical fluxes of polycyclic aromatic hydrocarbons in the northern Gulf of Mexico

Adhikari, Puspa L.; Maiti, Kanchan; Overton, Edward B.

doi:10.1016/j.marchem.2014.11.001

Cited by 63 publications

(45 citation statements)

References 55 publications

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“…Gustafsson, Gschwend and Buesseler (1997) have shown that around 90% of PAHs reach deep-sea sediments. This observation has been recently confirmed by Adhikari, Maiti and Overton (2015) in the Gulf of Mexico where they revealed that 3.1%–6.7% of total particulate PAHs were removed daily in the euphotic zone. Microorganisms have developed biodegradation strategies to transform and utilise PAHs as carbon and energy sources.…”

Section: Introductionsupporting

confidence: 68%

Role of environmental factors and microorganisms in determining the fate of polycyclic aromatic hydrocarbons in the marine environment

Duran¹,

Cravo‐Laureau²

2016

FEMS Microbiology Reviews

212

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Polycyclic aromatic hydrocarbons (PAHs) are widespread in marine ecosystems and originate from natural sources and anthropogenic activities. PAHs enter the marine environment in two main ways, corresponding to chronic pollution or acute pollution by oil spills. The global PAH fluxes in marine environments are controlled by the microbial degradation and the biological pump, which plays a role in particle settling and in sequestration through bioaccumulation. Due to their low water solubility and hydrophobic nature, PAHs tightly adhere to sediments leading to accumulation in coastal and deep sediments. Microbial assemblages play an important role in determining the fate of PAHs in water and sediments, supporting the functioning of biogeochemical cycles and the microbial loop. This review summarises the knowledge recently acquired in terms of both chronic and acute PAH pollution. The importance of the microbial ecology in PAH-polluted marine ecosystems is highlighted as well as the importance of gaining further in-depth knowledge of the environmental services provided by microorganisms.

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Section: Introductionsupporting

confidence: 68%

Role of environmental factors and microorganisms in determining the fate of polycyclic aromatic hydrocarbons in the marine environment

Duran¹,

Cravo‐Laureau²

2016

FEMS Microbiology Reviews

212

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“…After 2011, the PAH indices, carbon preference index, and other indicators of hydrocarbon contamination in sinking POM were indistinguishable from background values (Yan et al, 2016). In 2012-2013, PAH fluxes were orders of magnitude lower in the northern Gulf than they were during the oil spill (Adhikari et al, 2015). Sinking particles are a significant sink for PAHs from the water column (Bouloubassi et al, 2006).…”

Section: Recovery In Isotopic Composition Of Sinking Particles At Thementioning

confidence: 96%

Isotopic composition of sinking particles: Oil effects, recovery and baselines in the Gulf of Mexico, 2010–2015

Chanton

Giering

Bosman

et al. 2018

Elementa: Science of the Anthropocene

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The extensive release of oil during the 2010 Deepwater Horizon spill in the northern Gulf of Mexico perturbed the pelagic ecosystem and associated sinking material. To gauge the recovery and post-spill baseline sources, we measured D We interpret this depletion period, also observed in d 13C data, as caused by the incorporation of naturally seeped oil into sinking particles. Determination of post-spill baselines for these isotopic signatures allows for evaluation of anthropogenic inputs in future.

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“…OSAs can remove up to 65% of the oil released into the marine systems (Bandara et al, 2011). Dissolved oil components with low water solubility readily partition onto settling particles, preferentially those composed of organic carbon, soot, or black carbon, and sink with these particles (Adhikari et al, 2015). Such partitioning plays a role in determining long-term fate and transport of oil and its components.…”

Section: Sedimentation/settlingmentioning

confidence: 99%

Weathering of Oil Spilled in the Marine Environment

Tarr¹,

Zito²,

Overton³

et al. 2016

Oceanog

109

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ABSTRACT. Crude oil is a complex mixture of many thousands of mostly hydrocarbon and nitrogen-, sulfur-, and oxygen-containing compounds with molecular weights ranging from below 70 Da to well over 2,000 Da. When this complex mixture enters the environment from spills, ruptures, blowouts, or seeps, it undergoes a continuous series of compositional changes that result from a process known as weathering. Spills of petroleum involving human activity generally result in more rapid input of crude oil or refined products (diesel, gasoline, heavy fuel oil, and diluted bitumens) to the marine system than do natural processes and urban runoffs. The primary physicochemical processes involved in weathering include

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Vertical fluxes of polycyclic aromatic hydrocarbons in the northern Gulf of Mexico

Cited by 63 publications

References 55 publications

Role of environmental factors and microorganisms in determining the fate of polycyclic aromatic hydrocarbons in the marine environment

Role of environmental factors and microorganisms in determining the fate of polycyclic aromatic hydrocarbons in the marine environment

Isotopic composition of sinking particles: Oil effects, recovery and baselines in the Gulf of Mexico, 2010–2015

Weathering of Oil Spilled in the Marine Environment

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