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Title: The unique chemistry of Eastern Mediterranean water masses selects for distinct microbial communities by depth

Journal Article · · PLoS ONE
 [1];  [1];  [1];  [1];  [2];  [1];  [3];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Aberdeen, Aberdeenshire (United Kingdom)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Univ. Federal do Rio de Janeiro (Brazil)

The waters of the Eastern Mediterranean are characterized by unique physical and chemical properties within separate water masses occupying different depths. Distinct water masses are present throughout the oceans, which drive thermohaline circulation. These water masses may contain specific microbial assemblages. The goal of this study was to examine the effect of physical and geological phenomena on the microbial community of the Eastern Mediterranean water column. Chemical measurements were combined with phospholipid fatty acid (PLFA) analysis and high-throughput 16S rRNA sequencing to characterize the microbial community in the water column at five sites. We demonstrate that the chemistry and microbial community of the water column were stratified into three distinct water masses. The salinity and nutrient concentrations vary between these water masses. Nutrient concentrations increased with depth, and salinity was highest in the intermediate water mass. Our PLFA analysis indicated different lipid classes were abundant in each water mass, suggesting that distinct groups of microbes inhabit these water masses. 16S rRNA gene sequencing confirmed the presence of distinct microbial communities in each water mass. Taxa involved in autotrophic nitrogen cycling were enriched in the intermediate water mass suggesting that microbes in this water mass may be important to the nitrogen cycle of the Eastern Mediterranean. The Eastern Mediterranean also contains numerous active hydrocarbon seeps. We sampled above the North Alex Mud Volcano, in order to test the effect of these geological features on the microbial community in the adjacent water column. The community in the waters overlaying the mud volcano was distinct from other communities collected at similar depths and was enriched in known hydrocarbon degrading taxa. Furthermore, our results demonstrate that physical phenomena such stratification as well as geological phenomena such as mud volcanoes strongly affect microbial community structure in the Eastern Mediterranean water column.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1335315
Journal Information:
PLoS ONE, Vol. 10, Issue 3; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (88)

UCHIME improves sensitivity and speed of chimera detection journal June 2011
Dinitrogen fixation in aphotic oxygenated marine environments journal January 2013
The ecodist Package for Dissimilarity-based Analysis of Ecological Data journal January 2007
PyNAST: a flexible tool for aligning sequences to a template alignment journal November 2009
Stable isotope constraints on the nitrogen cycle of the Mediterranean Sea water column journal September 2002
Microbial methane oxidation and sulfate reduction at cold seeps of the deep Eastern Mediterranean Sea journal June 2009
Anaerobic ammonium oxidation (anammox) in the marine environment journal May 2005
Effects of phosphorus starvation versus limitation on the marine cyanobacterium Prochlorococcus  MED4 I: uptake physiology: Phosphorus uptake of Prochlorococcus journal February 2013
SUP05 Dominates the Gammaproteobacterial Sulfur Oxidizer Assemblages in Pelagic Redoxclines of the Central Baltic and Black Seas journal February 2013
River organic matter shapes microbial communities in the sediment of the Rhône prodelta journal May 2014
Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy journal June 2007
Nature of Phosphorus Limitation in the Ultraoligotrophic Eastern Mediterranean journal August 2005
Ecology of marine Bacteroidetes: a comparative genomics approach journal January 2013
Biological fixation of atmospheric nitrogen in the Mediterranean Sea journal November 1986
Microbial life at high salt concentrations: phylogenetic and metabolic diversity journal January 2008
Is dinitrogen fixation significant in the Levantine Basin, East Mediterranean Sea?: Eastern Mediterranean Sea N2 fixation journal January 2011
Temperature controls on aquatic bacterial production and community dynamics in arctic lakes and streams: Temperature controls on aquatic bacterial communities journal February 2010
Water-column stratification governs the community structure of subtropical marine picophytoplankton: Effect of stratification on marine picophytoplankton journal February 2011
Spatial patterns of bacterial abundance, activity and community composition in relation to water masses in the eastern Mediterranean Sea journal April 2010
Ammonia availability shapes the seasonal distribution and activity of archaeal and bacterial ammonia oxidizers in the Puget Sound Estuary journal July 2014
Widespread active seepage activity on the Nile Deep Sea Fan (offshore Egypt) revealed by high-definition geophysical imagery journal September 2010
Water mass-specificity of bacterial communities in the North Atlantic revealed by massively parallel sequencing: BACTERIAL ASSEMBLAGES IN NORTH ATLANTIC OCEAN journal December 2010
Metabolic flexibility of enigmatic SAR324 revealed through metagenomics and metatranscriptomics: Disentangling the ecophysiological role of SAR324 journal June 2013
Search and clustering orders of magnitude faster than BLAST journal August 2010
The Nile deep-sea fan: An example of interacting sedimentation, salt tectonics, and inherited subsalt paleotopographic features journal April 2006
The Unique Chemistry of Eastern Mediterranean Water Masses Selects for Distinct Microbial Communities by Depth journal March 2015
Comparison of deep-sea sediment microbial communities in the Eastern Mediterranean: Comparison of deep-sea sediment microbial communities journal April 2008
Evidence for hydrogen oxidation and metabolic plasticity in widespread deep-sea sulfur-oxidizing bacteria journal December 2012
Effects of phosphorus starvation versus limitation on the marine cyanobacterium Prochlorococcus  MED4 II: gene expression: Molecular response to P-stress in Prochlorococcus journal May 2013
SAR11 clade dominates ocean surface bacterioplankton communities journal December 2002
Determination of phospholipid fatty acid structures and stable carbon isotope compositions of deep-sea sediments of the Northwest Pacific, ODP site 1179 journal February 2006
A modified single solution method for the determination of phosphate in natural waters journal January 1962
Contrasting microbial assemblages in adjacent water masses associated with the East Australian Current: Metagenomics in the East Australian Current journal June 2012
Is the distribution of Prochlorococcus and Synechococcus ecotypes in the Mediterranean Sea affected by global warming? journal January 2011
Beyond the bacterium: planctomycetes challenge our concepts of microbial structure and function journal May 2011
Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea journal January 2011
Community Genomics Among Stratified Microbial Assemblages in the Ocean's Interior journal January 2006
Abundance and activity of Chloroflexi-type SAR202 bacterioplankton in the meso- and bathypelagic waters of the (sub)tropical Atlantic journal July 2008
Acridine Orange-Epifluorescence Technique for Counting Bacteria in Natural Waters
  • Francisco, Donald E.; Mah, Robert A.; Rabin, Albert C.
  • Transactions of the American Microscopical Society, Vol. 92, Issue 3 https://doi.org/10.2307/3225245
journal July 1973
Advection shapes Southern Ocean microbial assemblages independent of distance and environment effects journal September 2013
Analysis of phospholipid fatty acids (PLFA) to characterize microbial communities in aquifers journal March 2000
QIIME allows analysis of high-throughput community sequencing data journal April 2010
Transport functions dominate the SAR11 metaproteome at low-nutrient extremes in the Sargasso Sea journal September 2008
Isolation of an autotrophic ammonia-oxidizing marine archaeon journal September 2005
Archaea in coastal marine environments. journal June 1992
Microbial community genomics in eastern Mediterranean Sea surface waters journal August 2009
Diversity and distribution of cold-seep fauna associated with different geological and environmental settings at mud volcanoes and pockmarks of the Nile Deep-Sea Fan journal April 2011
Soil moisture is the major factor influencing microbial community structure and enzyme activities across seven biogeoclimatic zones in western Canada journal January 2012
Novel major archaebacterial group from marine plankton journal March 1992
Ocean currents shape the microbiome of Arctic marine sediments journal November 2012
Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea journal April 2010
Potential for Chemolithoautotrophy Among Ubiquitous Bacteria Lineages in the Dark Ocean journal September 2011
Insights into the phylogeny and coding potential of microbial dark matter journal July 2013
Limitations of microbial hydrocarbon degradation at the Amon mud volcano (Nile deep-sea fan) journal January 2013
Ultra-high-throughput microbial community analysis on the Illumina HiSeq and MiSeq platforms journal March 2012
Advances in monitoring environmental microbes journal June 2013
Processes and patterns of oceanic nutrient limitation journal March 2013
UniFrac: a New Phylogenetic Method for Comparing Microbial Communities journal December 2005
Deep-Sea Oil Plume Enriches Indigenous Oil-Degrading Bacteria journal August 2010
Enigmatic, ultrasmall, uncultivated Archaea journal April 2010
Quantitative Description of Microbial Communities Using Lipid Analysis book January 1993
The measurement of upwelling and subsequent biological process by means of the Technicon Autoanalyzer® and associated equipment journal June 1967
Advances in monitoring environmental microbes journal June 2013
Microbial methane oxidation and sulfate reduction at cold seeps of the deep Eastern Mediterranean Sea journal June 2009
First basin-wide experimental results on N 2 fixation in the open Mediterranean Sea: NITROGEN FIXATION IN THE MEDITERRANEAN journal February 2010
Transport functions dominate the SAR11 metaproteome at low-nutrient extremes in the Sargasso Sea journal September 2008
Microbial community genomics in eastern Mediterranean Sea surface waters journal August 2009
Ocean currents shape the microbiome of Arctic marine sediments journal November 2012
SAR11 clade dominates ocean surface bacterioplankton communities journal December 2002
Beyond the bacterium: planctomycetes challenge our concepts of microbial structure and function journal May 2011
Infant gut microbiota characteristics generally do not modify effects of lipid-based nutrient supplementation on growth or inflammation: secondary analysis of a randomized controlled trial in Malawi journal September 2020
Enigmatic, ultrasmall, uncultivated Archaea journal April 2010
Evidence for hydrogen oxidation and metabolic plasticity in widespread deep-sea sulfur-oxidizing bacteria journal December 2012
Archaea in coastal marine environments. journal June 1992
PyNAST: a flexible tool for aligning sequences to a template alignment journal November 2009
Search and clustering orders of magnitude faster than BLAST journal August 2010
UCHIME improves sensitivity and speed of chimera detection journal June 2011
Metabolic flexibility of enigmatic SAR324 revealed through metagenomics and metatranscriptomics: Disentangling the ecophysiological role of SAR324 journal June 2013
Abundance and activity of Chloroflexi-type SAR202 bacterioplankton in the meso- and bathypelagic waters of the (sub)tropical Atlantic journal July 2008
Is dinitrogen fixation significant in the Levantine Basin, East Mediterranean Sea?: Eastern Mediterranean Sea N2 fixation journal January 2011
Comparison of deep-sea sediment microbial communities in the Eastern Mediterranean: Comparison of deep-sea sediment microbial communities journal April 2008
Comment on "Nature of Phosphorus Limitation in the Ultraoligotrophic Eastern Mediterranean" journal June 2006
Deep-Sea Oil Plume Enriches Indigenous Oil-Degrading Bacteria journal August 2010
Potential for Chemolithoautotrophy Among Ubiquitous Bacteria Lineages in the Dark Ocean journal September 2011
Environmental Factors Shape Sediment Anammox Bacterial Communities in Hypernutrified Jiaozhou Bay, China journal September 2010
Microbial life at high salt concentrations: phylogenetic and metabolic diversity journal January 2008
Species Assemblages and Indicator Species: The Need for a Flexible Asymmetrical Approach journal August 1997
Dinitrogen fixation in aphotic oxygenated marine environments journal January 2013

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Figures / Tables (8)