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http://hdl.handle.net/10261/160867
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Bernal, Susana | es_ES |
dc.contributor.author | Segarra, Anna | es_ES |
dc.contributor.author | Merbt, S. | es_ES |
dc.contributor.author | Martí, Eugènia | es_ES |
dc.date.accessioned | 2018-02-16T13:13:29Z | - |
dc.date.available | 2018-02-16T13:13:29Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Freshwater Science 37(1):13-22 (2018) | es_ES |
dc.identifier.issn | 2161-9549 | - |
dc.identifier.uri | http://hdl.handle.net/10261/160867 | - |
dc.description | Este artículo contiene 10 páginas, 3 figuras, 3 tablas. | es_ES |
dc.description.abstract | The capacity of stream biofilms to transform and assimilate N in highly N-loaded streams is essential to guarantee the water quality of freshwater resources in urbanized areas. However, the degree of N saturation experienced by urban streams and their response to acute increases in N concentration are largely unknown. We measured changes in the rates of NH4 1 uptake (UNH4) and oxidation (UAO) resulting from experimental increases in NH4 1-N concentration in mature biofilms growing downstream of a wastewater treatment plant (WWTP) and, thus, naturally exposed to high N concentration. We investigated the responses of UNH4 and UAO to NH4 1-N increases and the abundance of NH4 1 oxidizing bacteria and archaea (AOB and AOA) in epilithic and epipsammic biofilms. UNH4 and UAO increased with increasing NH4 1-N concentration for the 2 biofilm types, suggesting no N saturation under ambient levels of NH4 1-N. Thus, these biofilms can contribute to mitigating N excesses and the variability of NH4 1-N concentrations from WWTP effluent inputs. The 2 biofilm types exhibited different Michaelis–Menten kinetics, indicating different capacity to respond to acute increases in NH4 1-N concentration. Mean UNH4 and UAO were 5 higher in epilithic than epipsammic biofilms, coinciding with a higher abundance of AOA1AOB in the former than in the later (76 104 vs 14 104 copies/cm2). AOB derived from active sludge dominated in epilithic biofilms, so our results suggest that WWTP effluents can strongly influence in-stream NH4 1 processing rates by increasing N inputs and by supplying AOA1AOB that are able to colonize some stream habitats. | es_ES |
dc.description.sponsorship | This research was funded by the projects MEDSOUL (CGL2014-59977-C3-2-R), NITRISED (201530E062), and NICUS (CGL-2014-55234-JIN) from the I1D program of the SpanishMinistry of Economy, and funds provided by the European Union Commission. SNM was supported by a JAE predoctoral fellowship from the Spanish National Research Council (CSIC) and fund provided by the Velux Stiftung Swiss Foundation. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Society for Freshwater Science | es_ES |
dc.rights | closedAccess | es_ES |
dc.subject | Ammonia oxidizing bacteria and archaea | es_ES |
dc.subject | Waste water treatment plant input | es_ES |
dc.subject | Stream biofilms | es_ES |
dc.subject | Uptake kinetics | es_ES |
dc.subject | Nitrogen saturation | es_ES |
dc.subject | Ammonium uptake | es_ES |
dc.subject | Ammonium oxidation | es_ES |
dc.title | Differences in ammonium oxidizer abundance and N uptake capacity between epilithic and epipsammic biofilms in an urban stream | es_ES |
dc.type | artículo | es_ES |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1086/696267 | es_ES |
dc.identifier.e-issn | 2161-9565 | - |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.fulltext | No Fulltext | - |
item.grantfulltext | none | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | artículo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
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