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Diversity and Distribution of Prokaryotes within a Shallow-Water Pockmark Field

Authors: Donato Giovannelli; Giuseppe d’Errico; Federica Fiorentino; Daniele Fattorini; Francesco Regoli; Lorenzo Angeletti; Tatjana Bakran-Petricioli; +4 Authors

Diversity and Distribution of Prokaryotes within a Shallow-Water Pockmark Field

Abstract

Pockmarks are crater-like depression on the seafloor associated with hydrocarbon ascent through muddy sediments in continental shelves around the world. In this study, we examine the diversity and distribution of benthic microbial communities at shallow-water pockmarks adjacent to the Middle Adriatic Ridge. We integrate microbial diversity data with characterization of local hydrocarbons concentrations and sediment geochemistry. Our results suggest these pockmarks are enriched in sedimentary hydrocarbons, and host a microbial community dominated by Bacteria, even in deeper sediment layers. Pockmark sediments showed higher prokaryotic abundance and biomass than surrounding sediments, potentially due to the increased availability of organic matter and higher concentrations of hydrocarbons linked to pockmark activity. Prokaryotic diversity analyses showed that the microbial communities of these shallow- water pockmarks are unique, and comprised phylotypes associated with the cycling of sulfur and nitrate compounds, as well as numerous know hydrocarbon degraders. Altogether, this study suggests that shallow-water pockmark habitats enhance the diversity of the benthic prokaryotic biosphere by providing specialized environmental niches.

Countries
Italy, Croatia
Subjects by Vocabulary

Microsoft Academic Graph classification: geography geography.geographical_feature_category biology Ecology Continental shelf Pockmark Sediment biology.organism_classification Cold seep Microbial population biology Benthic zone Sedimentary rock Geology Archaea

Keywords

Microbiology (medical), Hydrocarbon, archaea, pockmarks; cold seeps; hydrocarbons; prokaryotic diversity; bacteria; archaea; hydrocarbon degradation; microbial diversity, pockmarks, prokaryotic diversity, Cold seep, Microbiology, hydrocarbons, bacteria, Original Research, Pockmark, microbial diversity, cold seeps, hydrocarbon degradation

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    21
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    21
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
    Powered byBIP!BIP!
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
21
Top 10%
Average
Average
Green
gold
Funded by
NSF| Center for Dark Energy Biosphere Investigations (C-DEBI)
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 0939564
  • Funding stream: Directorate for Geosciences | Division of Ocean Sciences
,
EC| COCONET
Project
COCONET
Towards COast to COast NETworks of marine protected areas ( from the shore to the high and deep sea), coupled with sea-based wind energy potential.
  • Funder: European Commission (EC)
  • Project Code: 287844
  • Funding stream: FP7 | SP1 | KBBE
iis
,
EC| HERMIONE
Project
HERMIONE
Hotspot Ecosystem Research and Man's Impact on European seas
  • Funder: European Commission (EC)
  • Project Code: 226354
  • Funding stream: FP7 | SP1 | ENV
iis
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