English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/116551
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Potential impacts of black carbon on the marine microbial community

AuthorsMalits, Andrea ; Cattaneo, R.; Sintes, Eva; Gasol, Josep M. ; Herndl, Gerhard J.; Weinbauer, Markus G.
KeywordsViral lysis
Bacterial production
Light exposure
Black carbon aerosols
Issue Date23-Apr-2015
PublisherInter Research
CitationAquatic Microbial Ecology 75(1): 27-42 (2015)
AbstractBlack carbon (BC) is the carbonaceous residue of the incomplete combustion of fossil fuels and biomass and encompasses a range of chemically heterogeneous substances from partly charred plant material to highly condensed soot aerosols. We addressed the potential role of BC aerosol deposition on marine microbial processes in the ocean by investigating the effects of BC reference material (and its exposure to simulated solar radiation) on viral and bacterial activity in batch cultures with aged seawater. Viruses and bacteria were rapidly adsorbed to BC. No difference between the effect of irradiated and non-irradiated BC on free viral parameters was observed. Bacterial leucine incorporation was higher in the BC treatments than in the BC-free controls. The stimulated bacterial production in the dark BC treatments might be caused by the reduction of viral infection due to adsorption of organic material or by direct use of BC material. Viral production was significantly lower in BC-amended treatments than in BC-free controls, and the estimated fraction of infected cells decreased with increasing BC concentration. Moreover, bacterial activity in the solar-radiation-exposed BC treatments was higher than in the dark BC treatments, indicating that radiation made BC more accessible to bacteria. Our data reveal that BC has the potential to stimulate bacterial activity in the water column, particularly after exposure to solar radiation. Rising BC levels in the atmosphere due to increasing anthropogenic emissions could have far-reaching effects, including potential stimulation of seawater heterotrophy and CO2 production, through its effects on bacteria and viruses. © Inter-Research 2015
Description16 pages, 6 figures, 4 tables
Publisher version (URL)http://dx.doi.org/10.3354/ame01742
URIhttp://hdl.handle.net/10261/116551
DOI10.3354/ame01742
Identifiersdoi: 10.3354/ame01742
issn: 0948-3055
e-issn: 1616-1564
Appears in Collections:(ICM) Artículos
Files in This Item:
File Description SizeFormat 
Malits_et_al_2015.pdf475,35 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.