Effects of oil spill response technologies on marine microorganisms in the high Arctic

Marina Pančić, Eva Köhler, Maria Lund Paulsen, Kirstine Underbjerg Toxværd, Camille Lacroix, Stéphane Le Floch, Morten Hjorth, Torkel Gissel Nielsen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We studied how exposure to oil spill response technologies affect marine microorganisms during Arctic winter and spring. Microorganisms were exposed to chemically dispersed oil (DISP), in situ burnt oil (ISB), and natural attenuated oil (NATT) in mesocosms from February to May. We subsampled the mesocosms and studied the effects of oil in laboratory incubations as changes in biomass of the major functional groups: bacteria, heterotrophic-nanoflagellates, dinoflagellates, ciliates, pico- and nanophytoplankton, and diatoms over two 14-day periods. In winter, the majority of polycyclic aromatic hydrocarbons (PAHs) remained encapsulated in the ice, and the low concentrations of PAHs in water led to minute changes in biomass of the investigated groups. In spring, however, when the PAHs were partially released from the melting ice, the biomass of many functional groups in DISP and NATT decreased significantly, while the changes in ISB were less pronounced. The overall biomass reduction, as observed in this study, could lead to a disrupted transfer of energy from the primary producers to the higher trophic levels in oil affected areas.
Original languageEnglish
Article number104785
JournalMarine Environmental Research
Volume151
ISSN0141-1136
DOIs
Publication statusPublished - 2019

Keywords

  • Arctic microorganisms
  • Oil spill
  • Chemical dispersant
  • In situ burning
  • Natural attenuation

Cite this

Pančić, Marina ; Köhler, Eva ; Paulsen, Maria Lund ; Toxværd, Kirstine Underbjerg ; Lacroix, Camille ; Le Floch, Stéphane ; Hjorth, Morten ; Nielsen, Torkel Gissel. / Effects of oil spill response technologies on marine microorganisms in the high Arctic. In: Marine Environmental Research. 2019 ; Vol. 151.
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abstract = "We studied how exposure to oil spill response technologies affect marine microorganisms during Arctic winter and spring. Microorganisms were exposed to chemically dispersed oil (DISP), in situ burnt oil (ISB), and natural attenuated oil (NATT) in mesocosms from February to May. We subsampled the mesocosms and studied the effects of oil in laboratory incubations as changes in biomass of the major functional groups: bacteria, heterotrophic-nanoflagellates, dinoflagellates, ciliates, pico- and nanophytoplankton, and diatoms over two 14-day periods. In winter, the majority of polycyclic aromatic hydrocarbons (PAHs) remained encapsulated in the ice, and the low concentrations of PAHs in water led to minute changes in biomass of the investigated groups. In spring, however, when the PAHs were partially released from the melting ice, the biomass of many functional groups in DISP and NATT decreased significantly, while the changes in ISB were less pronounced. The overall biomass reduction, as observed in this study, could lead to a disrupted transfer of energy from the primary producers to the higher trophic levels in oil affected areas.",
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author = "Marina Pančić and Eva K{\"o}hler and Paulsen, {Maria Lund} and Toxv{\ae}rd, {Kirstine Underbjerg} and Camille Lacroix and {Le Floch}, St{\'e}phane and Morten Hjorth and Nielsen, {Torkel Gissel}",
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Effects of oil spill response technologies on marine microorganisms in the high Arctic. / Pančić, Marina; Köhler, Eva; Paulsen, Maria Lund; Toxværd, Kirstine Underbjerg; Lacroix, Camille; Le Floch, Stéphane; Hjorth, Morten; Nielsen, Torkel Gissel.

In: Marine Environmental Research, Vol. 151, 104785, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effects of oil spill response technologies on marine microorganisms in the high Arctic

AU - Pančić, Marina

AU - Köhler, Eva

AU - Paulsen, Maria Lund

AU - Toxværd, Kirstine Underbjerg

AU - Lacroix, Camille

AU - Le Floch, Stéphane

AU - Hjorth, Morten

AU - Nielsen, Torkel Gissel

PY - 2019

Y1 - 2019

N2 - We studied how exposure to oil spill response technologies affect marine microorganisms during Arctic winter and spring. Microorganisms were exposed to chemically dispersed oil (DISP), in situ burnt oil (ISB), and natural attenuated oil (NATT) in mesocosms from February to May. We subsampled the mesocosms and studied the effects of oil in laboratory incubations as changes in biomass of the major functional groups: bacteria, heterotrophic-nanoflagellates, dinoflagellates, ciliates, pico- and nanophytoplankton, and diatoms over two 14-day periods. In winter, the majority of polycyclic aromatic hydrocarbons (PAHs) remained encapsulated in the ice, and the low concentrations of PAHs in water led to minute changes in biomass of the investigated groups. In spring, however, when the PAHs were partially released from the melting ice, the biomass of many functional groups in DISP and NATT decreased significantly, while the changes in ISB were less pronounced. The overall biomass reduction, as observed in this study, could lead to a disrupted transfer of energy from the primary producers to the higher trophic levels in oil affected areas.

AB - We studied how exposure to oil spill response technologies affect marine microorganisms during Arctic winter and spring. Microorganisms were exposed to chemically dispersed oil (DISP), in situ burnt oil (ISB), and natural attenuated oil (NATT) in mesocosms from February to May. We subsampled the mesocosms and studied the effects of oil in laboratory incubations as changes in biomass of the major functional groups: bacteria, heterotrophic-nanoflagellates, dinoflagellates, ciliates, pico- and nanophytoplankton, and diatoms over two 14-day periods. In winter, the majority of polycyclic aromatic hydrocarbons (PAHs) remained encapsulated in the ice, and the low concentrations of PAHs in water led to minute changes in biomass of the investigated groups. In spring, however, when the PAHs were partially released from the melting ice, the biomass of many functional groups in DISP and NATT decreased significantly, while the changes in ISB were less pronounced. The overall biomass reduction, as observed in this study, could lead to a disrupted transfer of energy from the primary producers to the higher trophic levels in oil affected areas.

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M3 - Journal article

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