Fine-scale Microbial Communities Associated with Manganese Nodules in Deep-sea Sediment of the Korea Deep Ocean Study Area in the Northeast Equatorial Pacific
- Title
- Fine-scale Microbial Communities Associated with Manganese Nodules in Deep-sea Sediment of the Korea Deep Ocean Study Area in the Northeast Equatorial Pacific
- Author
- 현정호
- Keywords
- Clarion-Clipperton Fracture Zone (CCFZ); deep-sea sediment; microbial community; microbial diversity; 16S rRNA gene; Mn nodule
- Issue Date
- 2018-06
- Publisher
- KOREA OCEAN RESEARCH DEVELOPMENT INST
- Citation
- OCEAN SCIENCE JOURNAL, v. 53, No. 2, Page. 337-353
- Abstract
- Despite its potential significance for industrial
utilization, any activities associated with the mining of manganese
(Mn) nodules might have substantial impacts on benthic ecosystems.
Because microorganisms respond quickly to changing environmental
conditions, a study of microbial communities provides a relevant
proxy to assess possible changes in benthic ecosystems associated
with mining activities. We investigated fine-scale microbial
community composition and diversity inside and on the surface of
Mn nodules and in nearby deep-sea sediments in the Korea Deep
Ocean Study (KODOS) area located in the Clarion-Clipperton
Fracture Zone (CCFZ) of the northeast equatorial Pacific. Although
microbial cell density was lower within nodules (3.21 × 106 cells g-1)
than in sediment (2.14 × 108 cells g-1), nodules provided a unique
habitat for microorganisms. Manganese-oxidizing bacteria including
Hyphomicrobium and Aurantimonas in Alphaproteobacteria and
Marinobacter in Gammaproteobacteria were abundant in nodules,
which implied that these bacteria play a significant role in nodule
formation. In contrast, Idiomarina in Gammaproteobacteria and
Erythrobacter and Sulfitobacter in Alphaproteobacteria were
abundant in sediments. Meanwhile, Thaumarchaeota, a phylum
that consists of ammonia-oxidizing chemolithoautotrophs, were
the predominant archaeal group both in nodules and sediment.
Overall, microbial communities in Mn nodules were unique
compared to those observed in sediments. Furthermore, the
phylogenetic composition of microorganisms in the KODOS area
was distinguishable from that in the nodule provinces claimed by
China and Germany in the CCFZ and nodule fields in the central
South Pacific Gyre, respectively.
- URI
- https://link.springer.com/article/10.1007/s12601-018-0032-0https://repository.hanyang.ac.kr/handle/20.500.11754/81158
- ISSN
- 1738-5261
- DOI
- 10.1007/s12601-018-0032-0
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML