2014
DOI: 10.3389/fmicb.2014.00646
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Phaeocystis antarctica blooms strongly influence bacterial community structures in the Amundsen Sea polynya

Abstract: Rising temperatures and changing winds drive the expansion of the highly productive polynyas (open water areas surrounded by sea ice) abutting the Antarctic continent. Phytoplankton blooms in polynyas are often dominated by the haptophyte Phaeocystis antarctica, and they generate the organic carbon that enters the resident microbial food web. Yet, little is known about how Phaeocystis blooms shape bacterial community structures and carbon fluxes in these systems. We identified the bacterial communities that ac… Show more

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Cited by 96 publications
(106 citation statements)
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References 73 publications
(109 reference statements)
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“…The greatest differences appear between the seasonal AASW and the two mesopelagic WW and mCDW water masses. Our results agree with results from previous surveys based on clone libraries (Gentile et al, 2006) or pyrosequencing of 16S rRNA genes (Delmont et al, 2014;Kim et al, 2014;Wilkins et al, 2012), but go further by considering separation by water mass in the mesopelagic zone. Normally, a variety of factors in combination shape marine bacterial community structure and create spatiotemporal distribution patterns (biogeography).…”
Section: Discussionsupporting
confidence: 83%
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“…The greatest differences appear between the seasonal AASW and the two mesopelagic WW and mCDW water masses. Our results agree with results from previous surveys based on clone libraries (Gentile et al, 2006) or pyrosequencing of 16S rRNA genes (Delmont et al, 2014;Kim et al, 2014;Wilkins et al, 2012), but go further by considering separation by water mass in the mesopelagic zone. Normally, a variety of factors in combination shape marine bacterial community structure and create spatiotemporal distribution patterns (biogeography).…”
Section: Discussionsupporting
confidence: 83%
“…Normally, a variety of factors in combination shape marine bacterial community structure and create spatiotemporal distribution patterns (biogeography). In AASW for instance, factors known to control the population dynamics of bacterioplankton include light (this study), the availability of organic compounds (Sipler and Connelly, 2014), inorganic nutrients (Alderkamp et al, 2014;Sherrell et al, 2014) and complex interactions with eukaryotic phytoplankton blooms consisting mostly of Phaeocystis antarctica or diatoms (Delmont et al, 2014). Even if interactions between these factors ultimately shape bacterioplankton communities, individually they can cause different kinds of physiological responses in individual bacterial groups.…”
Section: Discussionmentioning
confidence: 99%
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