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dc.contributor.authorVan Engeland, Tom
dc.contributor.authorBouma, Tjeerd J.
dc.contributor.authorMorris, Edward P.
dc.contributor.authorBrun, Fernando G.
dc.contributor.authorPeralta González, Gloria
dc.contributor.authorLara, Miguel
dc.contributor.authorHendriks, Iris E.
dc.contributor.authorSoetaert, Karline
dc.contributor.authorMiddelburg, Jack J.
dc.contributor.otherBiologíaen_US
dc.date.accessioned2011-04-14T07:08:02Z
dc.date.available2011-04-14T07:08:02Z
dc.date.issued2011-01-01T00:00:00Z
dc.identifier.issn0171-8630
dc.identifier.urihttp://hdl.handle.net/10498/11041
dc.description.abstractDissolved organic nitrogen (DON) acts as a large reservoir of fixed nitrogen. Whereas DON utilization is common in the microbial community, little is known about utilization by macrophytes. We investigated the ability of the coexisting temperate marine macrophytes Zostera noltii, Cymodocea nodosa, and Caulerpa prolifera to take up nitrogen and carbon from small organic substrates of different molecular complexities (urea, glycine, L-leucine, and L-phenylalanine) and from dissolved organic matter (DOM) derived from algal and bacterial cultures (substrates with a complex composition). In addition to inorganic nitrogen, nitrogen from small organic substrates could be taken up in significant amounts by all macrophytes. Substrate uptake by the aboveground tissue differed from that of the belowground tissue. No relationships between carbon and nitrogen uptake of small organics were found. The preference for individual organic substrates was related to their structural complexity and C:N ratio. Uptake of algae-derived organic nitrogen was of similar magnitude as inorganic nitrogen, and was preferred over bacteria-derived nitrogen. These results add to the growing evidence that direct or quick indirect DON utilization may be more widespread among aquatic macrophytes than traditionally thought.en_US
dc.description.sponsorshipThis research was supported by the regional government of Andalusia project FUNDIV (P07-RNM-2516), the Spanish Project CTM2008-00012/MAR, a European Reintegration Grant (MERG-CT-2007-205675), a travel grant from Schure-Beijerinck-Popping Fund (SBP/JK/2007-32) and the Netherlands Organization for Scientific Research. Thanks to Fidel Echevarrìa Navas (Director of CACYTMAR) for granting us access to facilities, and to Bas Koutstaal for helping with sample processing. We also thank the anonymous reviewers for their valuable comments which significantly improved this manuscript.en_US
dc.formatapplication/pdf
dc.language.isoengen_US
dc.publisherInter Researchen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Unported
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.sourceMarine Ecology -Progress Seriesen_US
dc.subjectuptakeen_US
dc.subjectdissolved organic nitrogenen_US
dc.subjectstable isotopesen_US
dc.subjectZostera noltiien_US
dc.subjectCymodocea nodosaen_US
dc.subjectCaulerpa proliferaen_US
dc.subjectseagrassesen_US
dc.subjectmacroalgaeen_US
dc.subjectRNM-214en_US
dc.titlePotential uptake of dissolved organic matter by seagrasses and macroalgaeen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.identifier.urlhttp://www.int-res.com/abstracts/meps/v427/p71-81/
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doi10.3354/meps09054


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