Low Bacterial Diversity and High Labile Organic Matter Concentrations in the Sediments of the Medee Deep-Sea Hypersaline Anoxic Basin

Studies in the center and margin of the Medee Basin, a Mediterranean deep-sea hypersaline anoxic basin, and at a reference site during Penelope cruise (2007), revealed the existence of a 7 m-thick halocline, with high salinity (328 psu), and high sedimentary organic carbon and biopolymer concentrati...

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Detalles Bibliográficos
Autores principales: Akoumianaki, Ioanna, Nomaki, Hidetaka, Pachiadaki, Maria, Kormas, Konstantinos Ar., Kitazato, Hiroshi, Tokuyama, Hidekazu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Japanese Society of Microbial Ecology/The Japanese Society of Soil Microbiology 2012
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4103561/
https://www.ncbi.nlm.nih.gov/pubmed/22504432
http://dx.doi.org/10.1264/jsme2.ME12045
Descripción
Sumario:Studies in the center and margin of the Medee Basin, a Mediterranean deep-sea hypersaline anoxic basin, and at a reference site during Penelope cruise (2007), revealed the existence of a 7 m-thick halocline, with high salinity (328 psu), and high sedimentary organic carbon and biopolymer concentrations. The 194 16S rRNA sequences retrieved were grouped into 118 unique phylotypes. Pseudomonas gessardii, dominated in the center, while 33 phylotypes were detected at the margin and 73 at the reference site. The study suggested conditions hostile to bacteria in the sediments of the Medee Basin and preservation of sedimentary labile organic matter.

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