Microbial communities in seawater from an Arctic and a temperate Norwegian fjord and their potentials for biodegradation of chemically dispersed oil at low seawater temperatures

被引：33
作者：
Ribicic, Deni [1 ]
Netzer, Roman [2 ]
Winkler, Anika [3 ]
Brakstad, Odd Gunnar [2 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Canc Res & Mol Med, N-7491 Trondheim, Norway
[2] SINTEF Ocean, Dept Environm Technol, Brattorkaia 17C, N-7010 Trondheim, Norway
[3] Bielefeld Univ, Ctr Biotechnol CeBiTec, D-33501 Bielefeld, Germany
来源：
MARINE POLLUTION BULLETIN | 2018年 / 129卷 / 01期
关键词：
Oil; Biodegradation; Arctic; Microbial communities; Dispersants; GULF-OF-MEXICO; CRUDE-OIL; PETROLEUM-HYDROCARBONS; BACTERIAL COMMUNITIES; DEGRADING BACTERIA; MACONDO OIL; SEA-ICE; DEGRADATION; BIOREMEDIATION; CYCLOCLASTICUS;
D O I：
10.1016/j.marpolbul.2018.02.024
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Biodegradation of chemically dispersed oil at low temperature (0-2 degrees C) was compared in natural seawater from Arctic (Svalbard) and a temperate (Norway) fjords. The oil was premixed with a dispersant (Corexit 9500) and small-droplet oil dispersions prepared. Faster biotransformation of n-alkanes in the Arctic than in the temperate seawater were associated with the initially higher abundance of the alkane-degrading genus Oleispira in the Arctic than the temperate seawater. Comparable transformation of aromatic hydrocarbons was further associated with the late emergences Cycloclasticus in both seawater sources. The results showed that chemically dispersed oil may be rapidly biodegraded by microbial communities in Arctic seawater. Compared to oil biodegradation studies at higher seawater temperatures, longer lag-periods were experienced here, and may be attributed to both microbial and oil properties at these low seawater temperatures.
引用
收藏
页码：308 / 317
页数：10
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