Degradation of crude oil and PAHs in iron–manganese concretions and sediment from the northern Baltic Sea

Reunamo, Anna; Yli-Hemminki, Pirjo; Nuutinen, Jari; Lehtoranta, Jouni; Jørgensen, Kirsten S.

doi:10.1080/01490451.2016.1197987

Cited by 8 publications

(5 citation statements)

References 74 publications

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“…The measurement uncertainties of chemical water analyses are shown in the Table 2. The samples were analysed for the concentrations of petroleum hydrocarbons (sum between C 10 –C 40 ) and polycyclic aromatic hydrocarbons (PAHs) as described in Reunamo et al [18]. Two parallel samples were measured from each site.…”

Section: Methodsmentioning

confidence: 99%

Oil degradation potential of microbial communities in water and sediment of Baltic Sea coastal area

et al. 2019

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Two long-term potentially oil exposed Baltic Sea coastal sites near old oil refineries and harbours were compared to nearby less exposed sites in terms of bacterial, archaeal and fungal microbiomes and oil degradation potential. The bacterial, archaeal and fungal diversities were similar in oil exposed and less exposed sampling sites based on bacterial and archaeal 16S rRNA gene and fungal 5.8S rRNA gene amplicon sequencing from both DNA and RNA fractions. The number of genes participating in alkane degradation ( alk B) or PAH-ring hydroxylation (PAH–RHDα) were detected by qPCR in all water and sediment samples. These numbers correlated with the number of bacterial 16S rRNA gene copies in sediment samples but not with the concentration of petroleum hydrocarbons or PAHs. This indicates that both the clean and the more polluted sites at the Baltic Sea coastal areas have a potential for petroleum hydrocarbon degradation. The active community (based on RNA) of the coastal Baltic Sea water differed largely from the total community (based on DNA). The most noticeable difference was seen in the bacterial community in the water samples were the active community was dominated by Cyanobacteria and Proteobacteria whereas in total bacterial community Actinobacteria was the most abundant phylum. The abundance, richness and diversity of Fungi present in water and sediment samples was in general lower than that of Bacteria and Archaea. Furthermore, the sampling location influenced the fungal community composition, whereas the bacterial and archaeal communities were not influenced. This may indicate that the fungal species that are adapted to the Baltic Sea environments are few and that Fungi are potentially more vulnerable to or affected by the Baltic Sea conditions than Bacteria and Archaea.

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Section: Methodsmentioning

confidence: 99%

Oil degradation potential of microbial communities in water and sediment of Baltic Sea coastal area

et al. 2019

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“…The communities of the nodules revealed a lower phylogenetic diversity compared to that reported for underlying sediments. At the same time, the reported nodules communities were enriched with one or several taxa represented in both microenvironments 11,13,14,16,[24][25][26][27][28] . Notably, the microbial communities of any Fe-Mn deposits from the Arctic Ocean have not been characterized so far.…”

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confidence: 86%

Fast-growing Arctic Fe–Mn deposits from the Kara Sea as the refuges for cosmopolitan marine microorganisms

Shulga

Abramov

Klyukina

et al. 2022

Sci Rep

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The impact of biomineralization and redox processes on the formation and growth of ferromanganese deposits in the World Ocean remains understudied. This problem is particularly relevant for the Arctic marine environment where sharp seasonal variations of temperature, redox conditions, and organic matter inflow significantly impact the biogenic and abiotic pathways of ferromanganese deposits formation. The microbial communities of the fast-growing Arctic Fe–Mn deposits have not been reported so far. Here, we describe the microbial diversity, structure and chemical composition of nodules, crust and their underlying sediments collected from three different sites of the Kara Sea. Scanning electron microscopy revealed a high abundance of microfossils and biofilm-like structures within the nodules. Phylogenetic profiling together with redundancy and correlation analyses revealed a positive selection for putative metal-reducers (Thermodesulfobacteriota), iron oxidizers (Hyphomicrobiaceae and Scalinduaceae), and Fe-scavenging Nitrosopumilaceae or Magnetospiraceae in the microenvironments of the Fe–Mn deposits from their surrounding benthic microbial populations. We hypothesize that in the Kara Sea, the nodules provide unique redox-stable microniches for cosmopolitan benthic marine metal-cycling microorganisms in an unsteady environment, thus focusing the overall geochemical activity of nodule-associated microbial communities and accelerating processes of ferromanganese deposits formation to uniquely high rates.

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“…Facultative and obligate ADOC microbial consumers, as well as ADOC‐tolerant organisms, have been characterized, and a number of hydrocarbonoclastic bacteria (HCB, this is facultative and obligate hydrocarbon‐degrading bacteria) species have been proposed as taxonomic microbial indicators of hydrocarbon pollution (Kostka et al ., 2011; Parmar et al ., 2016; Krolicka et al ., 2017, 2019). Beyond taxonomical markers, functional gene expression can describe the transcriptomic fingerprint of the different co‐occurring interactions between ADOC and microorganisms in acute environmental contamination events (DeBry et al ., 2007; Reunamo et al ., 2017). As an example, in an oil challenged mesocosms experiment, Valencia‐Agami et al ., 2019, tracked bacterial hydrocarbon degradation activity based on the copy number of the Alkane 1‐monooxygenase ( alkB gene), in combination with the detected culturable HCB bacteria.…”

Section: Introductionmentioning

confidence: 99%

Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean

Martinez-Varela

Cerro‐Gálvez

Auladell

et al. 2021

Environmental Microbiology

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Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters.

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Degradation of crude oil and PAHs in iron–manganese concretions and sediment from the northern Baltic Sea

Cited by 8 publications

References 74 publications

Oil degradation potential of microbial communities in water and sediment of Baltic Sea coastal area

Oil degradation potential of microbial communities in water and sediment of Baltic Sea coastal area

Fast-growing Arctic Fe–Mn deposits from the Kara Sea as the refuges for cosmopolitan marine microorganisms

Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean

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