Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0285-3 |
Biodegradation as an important sink of aromatic hydrocarbons in the oceans | |
Gonzalez-Gaya, Belen1,2; Martinez-Varela, Alicia1; Vila-Costa, Maria1; Casal, Paulo1; Cerro-Galvez, Elena1; Berrojalbiz, Naiara1; Lundin, Daniel3; Vidal, Montserrat4; Mompean, Carmen5; Bode, Antonio5; Jimenez, Begona2; Dachs, Jordi1 | |
2019-02-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:2页码:119-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Sweden |
英文摘要 | Atmospheric deposition of semivolatile aromatic hydrocarbons accounts for an important input of organic matter to the surface ocean. Nevertheless, the biogeochemical cycling and sinks of semivolatile aromatic hydrocarbons in the ocean remain largely uncharacterized. Here we present measurements of 64 polycyclic aromatic hydrocarbons in plankton and seawater from the Atlantic, Pacific, Indian and Southern Oceans, as well an assessment of their microbial degradation genes. Concentrations of the more hydrophobic compounds decreased when the plankton biomass was higher, consistent with the relevance of the biological pump. The mass balance for the global oceans showed that the settling fluxes of aromatic hydrocarbons in the water column were two orders of magnitude lower than the atmospheric deposition fluxes. This imbalance was high for low molecular weight hydrocarbons, such as phenanthrene and methylphenanthrenes, highly abundant in the dissolved phase. Parent polycyclic aromatic hydrocarbons were depleted to a higher degree than alkylated polycyclic aromatic hydrocarbons, and the degradation genes for polycyclic aromatic hydrocarbons were found to be ubiquitous in oceanic metagenomes. These observations point to a key role of biodegradation in depleting the bioavailable dissolved hydrocarbons and to the microbial degradation of atmospheric inputs of organic matter as a relevant process for the marine carbon cycle. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457194900011 |
WOS关键词 | VERTICAL FLUXES ; BACTERIAL-DEGRADATION ; MEDITERRANEAN SEA ; OIL-SPILL ; PAHS ; WATER ; DEPOSITION ; ATLANTIC ; DIOXYGENASES ; ATMOSPHERE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35074 |
专题 | 地球科学 气候变化 |
作者单位 | 1.IDAEA CSIC, Dept Environm Chem, Inst Environm Assessment & Water Res, Barcelona, Spain; 2.IQOG CSIC, Dept Instrumental Anal & Environm Chem, Inst Organ Chem, Madrid, Spain; 3.Linnaeus Univ, Ctr Ecol & Evolut Microbial Model Syst, EEMiS, Kalmar, Sweden; 4.Univ Barcelona, Dept Evolutionary Biol Ecol & Environm Sci, Barcelona, Spain; 5.Oceanog Ctr A Coruna, Spanish Oceanog Inst, IEO, La Coruna, Spain |
推荐引用方式 GB/T 7714 | Gonzalez-Gaya, Belen,Martinez-Varela, Alicia,Vila-Costa, Maria,et al. Biodegradation as an important sink of aromatic hydrocarbons in the oceans[J]. NATURE GEOSCIENCE,2019,12(2):119-+. |
APA | Gonzalez-Gaya, Belen.,Martinez-Varela, Alicia.,Vila-Costa, Maria.,Casal, Paulo.,Cerro-Galvez, Elena.,...&Dachs, Jordi.(2019).Biodegradation as an important sink of aromatic hydrocarbons in the oceans.NATURE GEOSCIENCE,12(2),119-+. |
MLA | Gonzalez-Gaya, Belen,et al."Biodegradation as an important sink of aromatic hydrocarbons in the oceans".NATURE GEOSCIENCE 12.2(2019):119-+. |
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