English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/16591
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:

DC FieldValueLanguage
dc.contributor.authorPortillo Guisado, María del Carmen-
dc.contributor.authorReina, M.-
dc.contributor.authorSerrano, Laura-
dc.contributor.authorSáiz-Jiménez, Cesáreo-
dc.contributor.authorGonzález Grau, Juan Miguel-
dc.identifier.citationEnvironmental Geochemistry and Health 30(2): 165-170en_US
dc.description.abstractThe Doñana National Park contains highly complex microbial communities that play critical roles in the bioavailability and biogeochemical cycling of elements. In this study, we analyzed the formation of Fe-rich films on the surface of shallow waters at Doñana National Park as a model for future applications in bioremediation. Phytoplankton composition and abundance, physicochemical measurements, culture enrichments, and molecular detection of microorganisms were determined during this study. Natural samples were incubated in the laboratory and enrichments producing similar phenomena were obtained. Bacteria belonging to the genera Enterobacter were the major participants in surface Fe-film formation in laboratory enrichments. Film formation was dependent on wind exposure and only those sites protected from the direct influence of wind developed these films. A higher concentration of euglenophytes was found in the proximity of film-covered waters. Available iron (Fe2+) and total Fe concentrations were high (18.8 and 46.6 mg/L, respectively) underneath the surface film, and higher than in film-free waters and pore-sediment water. The concentration of phosphate and its availability were higher in the iron-rich film sediment, as 61% of total P was bound to iron oxy-hydroxides. Our results provide evidence of the link between P and Fe biogeochemical cycling in aquatic systems on sandy soils at the Doñana National Park. In addition, they provide significant insights into the bioavailability of these elements with potential interest in the role of microorganisms for metal sequestration in natural environments and utilization in bioremediation processes.en_US
dc.description.sponsorshipThe authors acknowledge funding from the Spanish Ministry of Education and Science through project CGL2004-03927-C02-01/BOSen_US
dc.format.extent579917 bytes-
dc.subjectDoñana National Parken_US
dc.subjectFe-rich filmen_US
dc.subjectMetal sequestrationen_US
dc.titleRole of specific microbial communities in the bioavailability of iron in Doñana National Parken_US
dc.description.peerreviewedPeer revieweden_US
dc.contributor.funderMinisterio de Educación y Ciencia (España)-
Appears in Collections:(IRNAS) Artículos
Files in This Item:
There are no files associated with this item.
Show simple item record

Related articles:

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