Impact of light on marine bacterioplankton community structure

2005 ◽  
Vol 39 ◽  
pp. 235-245 ◽  
Author(s):  
MS Schwalbach ◽  
M Brown ◽  
JA Fuhrman
Keyword(s):  
Community Structure ◽  
Marine Bacterioplankton ◽  
Bacterioplankton Community

scholarly journals Changes in the Bacterioplankton Community Structure from Southern Gulf of Mexico During a Simulated Crude Oil Spill at Mesocosm Scale

2019 ◽  
Vol 7 (10) ◽  
pp. 441 ◽  
Author(s):  
Sonia S. Valencia-Agami ◽  
Daniel Cerqueda-García ◽  
Sébastien Putzeys ◽  
María Magdalena Uribe-Flores ◽  
Norberto Ulises García-Cruz ◽  
...  
Keyword(s):  
Community Structure ◽  
Gulf Of Mexico ◽  
Crude Oil ◽  
Oil Spill ◽  
Initial Time ◽  
P Value ◽  
Sequencing Analysis ◽  
Hydrocarbonoclastic Bacteria ◽  
Bacterioplankton Community ◽  
Southern Gulf Of Mexico

The southern Gulf of Mexico (sGoM) is highly susceptible to receiving environmental impacts due to the recent increase in oil-related activities. In this study, we assessed the changes in the bacterioplankton community structure caused by a simulated oil spill at mesocosms scale. The 16S rRNA gene sequencing analysis indicated that the initial bacterial community was mainly represented by Gamma-proteobacteria, Alpha-proteobacteria, Flavobacteriia, and Cyanobacteria. The hydrocarbon degradation activity, measured as the number of culturable hydrocarbonoclastic bacteria (CHB) and by the copy number of the alkB gene, was relatively low at the beginning of the experiment. However, after four days, the hydrocarbonoclastic activity reached its maximum values and was accompanied by increases in the relative abundance of the well-known hydrocarbonoclastic Alteromonas. At the end of the experiment, the diversity was restored to similar values as those observed in the initial time, although the community structure and composition were clearly different, where Marivita, Pseudohongiella, and Oleibacter were detected to have differential abundances on days eight–14. These changes were related with total nitrogen (p value = 0.030 and r2 = 0.22) and polycyclic aromatic hydrocarbons (p value = 0.048 and r2 = 0.25), according to PERMANOVA. The results of this study contribute to the understanding of the potential response of the bacterioplankton from sGoM to crude oil spills.

scholarly journals Seasonal and interannual variability of the marine bacterioplankton community throughout the water column over ten years

2014 ◽  
Vol 9 (3) ◽  
pp. 563-580 ◽  
Author(s):  
Jacob A Cram ◽  
Cheryl-Emiliane T Chow ◽  
Rohan Sachdeva ◽  
David M Needham ◽  
Alma E Parada ◽  
...  
Keyword(s):  
Interannual Variability ◽  
Water Column ◽  
Marine Bacterioplankton ◽  
Bacterioplankton Community ◽  
Seasonal And Interannual Variability

scholarly journals Seasonal Dynamics of Bacterioplankton Community Structure in a Eutrophic Lake as Determined by 5S rRNA Analysis

1999 ◽  
Vol 65 (7) ◽  
pp. 3164-3174 ◽  
Author(s):  
Manfred G. Höfle ◽  
Heike Haas ◽  
Katja Dominik
Keyword(s):  
Community Structure ◽  
Seasonal Dynamics ◽  
Phytoplankton Bloom ◽  
Bacterial Species ◽  
Seasonal Succession ◽  
Eutrophic Lake ◽  
5S Rrna ◽  
Taxonomic Structure ◽  
Bacterioplankton Community ◽  
Taxonomic Groups

ABSTRACT Community structure of bacterioplankton was studied during the major growth season for phytoplankton (April to October) in the epilimnion of a temperate eutrophic lake (Lake Plußsee, northern Germany) by using comparative 5S rRNA analysis. Estimates of the relative abundances of single taxonomic groups were made on the basis of the amounts of single 5S rRNA bands obtained after high-resolution electrophoresis of RNA directly from the bacterioplankton. Full-sequence analysis of single environmental 5S rRNAs enabled the identification of single taxonomic groups of bacteria. Comparison of partial 5S rRNA sequences allowed the detection of changes of single taxa over time. Overall, the whole bacterioplankton community showed two to eight abundant (>4% of the total 5S rRNA) taxa. A distinctive seasonal succession was observed in the taxonomic structure of this pelagic community. A rather-stable community structure, with seven to eight different taxonomic units, was observed beginning in April during the spring phytoplankton bloom. A strong reduction in this diversity occurred at the beginning of the clear-water phase (early May), when only two to four abundant taxa were observed, with one taxon dominating (up to 72% of the total 5S rRNA). The community structure during summer stagnation (June and July) was characterized by frequent changes of different dominating taxa. During late summer, a dinoflagellate bloom (Ceratium hirudinella) occurred, with Comamonas acidovorans (β-subclass of the classProteobacteria) becoming the dominant bacterial species (average abundance of 43% of the total 5S rRNA). Finally, the seasonal dynamics of the community structure of bacterioplankton were compared with the abundances of other major groups of the aquatic food web, such as phyto- and zooplankton, revealing that strong grazing pressure by zooplankton can reduce microbial diversity substantially in pelagic environments.

scholarly journals Bacterioplankton community structure: Protists control net production and the proportion of active bacteria in a coastal marine community

1996 ◽  
Vol 41 (6) ◽  
pp. 1169-1179 ◽  
Author(s):  
Paul A. del Giorgio ◽  
Josep M. Gasol ◽  
Dolors Vaqué ◽  
Paola Mura ◽  
Susana Agustí ◽  
...  
Keyword(s):  
Community Structure ◽  
Net Production ◽  
Bacterioplankton Community ◽  
Coastal Marine ◽  
Active Bacteria ◽  
Control Net ◽  
Marine Community
Sign in / Sign up

Export Citation Format

Share Document