English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97278
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

Functional diversity of bacterioplankton assemblages in western Antarctic seawaters during late spring

AuthorsSala, M. Montserrat ; Arin, Laura ; Balagué, Vanessa ; Felipe, Jordi ; Guadayol, Òscar ; Vaqué, Dolors
KeywordsBacterial activity
Functional diversity
Biolog
Aminopeptidase
Ectoenzyme
Antarctica
Issue Date12-May-2005
PublisherInter Research
CitationMarine Ecology Progress Series 292: 13-21 (2005)
AbstractFunctional diversity and aminopeptidase activity (AMA) in bacterial assemblages were determined in western Antarctic waters during late spring 2002. Functional diversity was assayed by the patterns of sole carbon source utilization in Biolog-ECO Microplates™ and AMA with the fluorogenic substrate leucine 7-amido-4-methylcoumarin. N-acetyl-D-glucosamine and D-cellobiose were the most used carbohydrates. This suggested that used dissolved organic carbon (DOC) was mostly of either zoo-or phytoplankton origin. Principal component analysis of the sole carbon source utilization profiles separated the samples according to salinity and temperature. This separation corresponded roughly with the 3 areas of study: Bransfield Strait (BR), Gerlache Strait (GE) and Bellingshausen Sea (BE). AMA was higher in the upper 40 m, probably associated with the higher organic matter load. Phytoplankton biomass was the factor that accounted for the highest variance in AMA, but did not have a clear influence on functional diversity of bacterioplankton. Our findings indicate that differences in functional diversity of bacterioplankton populations in western Antarctic waters are not directly related to phytoplanktonic abundance. This suggests that bacteria could utilize other carbon sources than DOC freshly released by phytoplankton. © Inter-Research 2005
Description9 pages, 5 figures, 3 tables
Publisher version (URL)http://dx.doi.org/10.3354/meps292013
URIhttp://hdl.handle.net/10261/97278
DOI10.3354/meps292013
ISSN0171-8630
E-ISSN1616-1599
Appears in Collections:(ICM) Artículos
Files in This Item:
File Description SizeFormat 
Sala_et_al_2005.pdf305,75 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


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