Evaluation of anthropogenic and biogenic inputs into the western Mediterranean using molecular markers

Dachs, Jordi; Bayona, Josep M.; Fillaux, Joëlle; Saliot, A.; Albaigés, Joan

doi:10.1016/s0304-4203(99)00002-x

Cited by 49 publications

(24 citation statements)

References 43 publications

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“…The F1 fraction (the most apolar fraction) is mainly anthropogenic and includes linear and branched alkanes, the aliphatic unresolved complex mixture (UCM), polychlorinated biphenyls (PCBs), dechlorane plus (DP), organochlorine pesticides such as hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB), and other nonpolar OPs (Dachs et al, 1999;Galbán-Malagón et al, 2012;White et al, 2013). The F1 fraction (the most apolar fraction) is mainly anthropogenic and includes linear and branched alkanes, the aliphatic unresolved complex mixture (UCM), polychlorinated biphenyls (PCBs), dechlorane plus (DP), organochlorine pesticides such as hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB), and other nonpolar OPs (Dachs et al, 1999;Galbán-Malagón et al, 2012;White et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Microbial responses to anthropogenic dissolved organic carbon in the Arctic and Antarctic coastal seawaters

Cerro‐Gálvez

Casal

Lundin

et al. 2019

Environmental Microbiology

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Summary Thousands of semi‐volatile hydrophobic organic pollutants (OPs) reach open oceans through atmospheric deposition, causing a chronic and ubiquitous pollution by anthropogenic dissolved organic carbon (ADOC). Hydrophobic ADOC accumulates in cellular lipids, inducing harmful effects on marine biota, and can be partially prone to microbial degradation. Unfortunately, their possible effects on microorganisms, key drivers of global biogeochemical cycles, remain unknown. We challenged coastal microbial communities from Ny‐Ålesund (Arctic) and Livingston Island (Antarctica) with ADOC concentrations within the range of oceanic concentrations in 24 h. ADOC addition elicited clear transcriptional responses in multiple microbial heterotrophic metabolisms in ubiquitous groups such as Flavobacteriia, Gammaproteobacteria and SAR11. Importantly, a suite of cellular adaptations and detoxifying mechanisms, including remodelling of membrane lipids and transporters, was detected. ADOC exposure also changed the composition of microbial communities, through stimulation of rare biosphere taxa. Many of these taxa belong to recognized OPs degraders. This work shows that ADOC at environmentally relevant concentrations substantially influences marine microbial communities. Given that emissions of organic pollutants are growing during the Anthropocene, the results shown here suggest an increasing influence of ADOC on the structure of microbial communities and the biogeochemical cycles regulated by marine microbes.

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Section: Resultsmentioning

confidence: 99%

Microbial responses to anthropogenic dissolved organic carbon in the Arctic and Antarctic coastal seawaters

Cerro‐Gálvez

Casal

Lundin

et al. 2019

Environmental Microbiology

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“…In addition, hydrocarbon budgets are available for the Western part of Mediterranean Sea Dachs et al, 1999), but there is a tremendous lack of information regarding the Southern Mediterranean (El Sikaily et al, 2002;El Nemr and Abd-Allah, 2003). Although PAHs have been determined previously in marine sediments from a few locations along the Egyptian Mediterranean Sea coast, this is the first systematic study to be undertaken along 500 km of the Egyptian Mediterranean Sea coast.…”

Section: Introductionmentioning

confidence: 96%

The Distribution and Sources of Polycyclic Aromatic Hydrocarbons in Surface Sediments Along the Egyptian Mediterranean Coast

Nemr

Said

Khaled

et al. 2006

Environ Monit Assess

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Coastal marine sediment samples were collected from 31 sampling stations along the Egyptian Mediterranean Sea coast. All sediment samples were analyzed to determine aliphatic and polycyclic aromatic hydrocarbons (PAHs) as well as total organic carbon (TOC) contents and grain size analysis. Total concentrations of 16 EPA-PAHs in the sediments were varied from 88 to 6338 ng g(-1) with an average value of 154 ng g(-1) (dry weight). However, the concentrations of total aliphatic were varied from 1.3 to 69.9 ng g(-1) with an average value of 15.6 ng g(-1) (dry weight). The highest contents of PAHs were found in the Eastern harbor (6338 ng g(-1)), Manzala (5206 ng g(-1)) and El-Jamil East (4895 ng g(-1)) locations. Good correlations observed between a certain numbers of PAH concentrations allowed to identify its origin. The average total organic carbon (TOC) percent was varied from 0.91 to 4.54%. Higher concentration of total pyrolytic hydrocarbons ( summation operatorCOMB) than total fossil hydrocarbons ( summation operatorPHE) declared that atmospheric fall-out is the significant source of PAHs to marine sediments of the Egyptian Mediterranean coast. The selected marked compounds, a principal component analysis (PCA) and special PAHs compound ratios (phenanthrene/anthracene vs fluoranthene/pyrene; summation operatorCOMB/ summation operatorEPA-PAHs) suggest the pyrogenic origins, especially traffic exhausts, are the dominant sources of PAHs in most locations. Interferences of rather petrogenic and pyrolytic PAH contaminations were noticed in the harbors due to petroleum products deliveries and fuel combustion emissions from the ships staying alongside the quays.

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“…These include urban, surrounding industrial activities or installations that do not necessarily belong to the port (Darbra et al, 2004;Ruggieri et al, 2011). However, recent studies about organic contamination are concentrated only on the northwestern part of the Mediterranean Sea (Lipiatou et al, 1997;Dachs et al, 1999) and there are great lacks of information on the Eastern part (Gogou et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Organic pollution in surficial sediments of Tripoli harbour, Lebanon

Merhaby

Net

Halwani

et al. 2015

Marine Pollution Bulletin

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Evaluation of anthropogenic and biogenic inputs into the western Mediterranean using molecular markers

Cited by 49 publications

References 43 publications

Microbial responses to anthropogenic dissolved organic carbon in the Arctic and Antarctic coastal seawaters

Microbial responses to anthropogenic dissolved organic carbon in the Arctic and Antarctic coastal seawaters

The Distribution and Sources of Polycyclic Aromatic Hydrocarbons in Surface Sediments Along the Egyptian Mediterranean Coast

Organic pollution in surficial sediments of Tripoli harbour, Lebanon

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