Biodegradation of marine oil spills in the Arctic with a Greenland perspective

Vergeynst, Leendert; Wegeberg, Susse; Aamand, Jens; Lassen, Pia; Gosewinkel, Ulrich; Fritt-Rasmussen, Janne; Gustavson, Kim; Mosbech, Anders

doi:10.1016/j.scitotenv.2018.01.173

Cited by 62 publications

(24 citation statements)

References 160 publications

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“…Our data showed that expression of the msbA gene and genes coding for general ABC transporter multidrug efflux pump after 24 h in the Arctic were higher in ADOC amendments than in the controls for Flavobacteriia, Gammaproteobacteria and SAR11 (Fig. 4; Garneau et al, 2016;Newman et al, 2016;Vergeynst et al, 2018).…”

Section: Mechanisms Of Detoxificationmentioning

confidence: 68%

“…2). 2, Supporting Information Table S3 for complete list), which are well-known hydrocarbon degraders in cold environments, and known to increase the efficiency of bioremediation processes (Jiao et al, 2016;Yang et al, 2016;Vergeynst et al, 2018). In Antarctica, at the final time point, they accounted for 0.2% (AE 0.16%) of the total community, suggesting a slower or weaker response to ADOC than the one observed in Arctic waters (Supporting Information Fig.…”

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

“…Flavobacteriia and other bacteria dominated the FA desaturase Pfam that was particularly expressed in Arctic ADOC amendments after 24 h (Fig. 4; Garneau et al, 2016;Newman et al, 2016;Vergeynst et al, 2018). In order to track the second mechanism, we quantified the number of transcripts of isoprenoid biosynthesis, as hopanoids (triterpenes) are synthesized from isoprene.…”

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

“…Strain PD653 (Fig. 2, Supporting Information Table S3 for complete list), which are well-known hydrocarbon degraders in cold environments, and known to increase the efficiency of bioremediation processes (Jiao et al, 2016;Yang et al, 2016;Vergeynst et al, 2018). These groups, belonging to the Alphaproteobacteria class Sphingomonadales and to the phylum Actinobacteria, were found to be significantly more abundant after 24 h in ADOC amendments than in the controls (Supporting Information Fig.…”

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

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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: Mechanisms Of Detoxificationmentioning

confidence: 68%

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

Section: Changes In Bacterioplankton Community Compositionmentioning

confidence: 99%

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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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“…Effects from spills are particularly acute given the region is remote, insufficiently charted, and inadequately supported by spill response infrastructure (Ivanova, 2011; National Research Council of the National Academies of Science [NRC], 2014). Long-term entrainment of oil in cold-water biological communities (Vergeynst et al, 2018) make Arctic ecosystems particularly vulnerable to spills.…”

Section: Introductionmentioning

confidence: 99%

Vessel Operations in the Arctic, 2015–2017

Silber¹,

Adams

2019

Front. Mar. Sci.

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The Arctic is among the most rapidly-changing regions on Earth. Diminishing levels of sea-ice has increased opportunities for maritime activities in historically inaccessible areas such as the Northern Sea Route and Northwest Passage. Degradation of Arctic marine ecosystems may accompany expanding vessel operations through introduced underwater noise, potential for large oil spills, among other things; and may compound stressors already effecting biological populations due to climate change. Assessments are needed to track changes in vessel traffic patterns and associated environmental impacts. We analyzed Arctic-wide vessel Automatic Identification System data 1 January 2015 to 31 December 2017 to quantify the amount and spatial distribution of vessel operations, assess possible changes in these operations, and establish a baseline for future monitoring. Nearly 400,000 vessel transits were analyzed. Number of trips, hours of operation, and amount of sea surface exposed to vessel traffic were used to compare operations between 14 delineated waterways. Operations were extensive and diverse: an average of 132,828 trips were made annually by over 5,000 different vessels. Transits were made in all areas studied and all months of the year. Maritime activities were intensive in some areas, but ice-limited in others. Amount of sea surface exposed to vessel traffic exceeded 70% in all but three areas. Bulk carriers, cargo ships, passenger/cruise ships, research survey ships, and vessels supporting oil/gas-related activities were represented. However, fishing vessels, primarily in the Barents, Bering, and Norwegian Seas, surpassed operations of all other vessel types and comprised about one-half of all voyages each year. We observed no overt increasing or decreasing trends in vessel traffic volume in our limited study period. Instead, inter-year variation was evident. While the number of unique vessels and transits increased year-to-year, hours of operation declined in the same period. Abundance/distribution of fisheries resources, economic feasibility of Arctic marine travel as weighed against inherent risks, and other factors likely accounted for inter-year variation in regional activity levels. Measures have been established to protect Arctic marine ecosystems but may need strengthening to address potential ecosystem threats from existing and growing commercial and industrial activities in the region.

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