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Microbial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing species

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dc.contributor.authorPereira, Ermelinda
dc.contributor.authorSantos, Sónia A.P.
dc.contributor.authorArrobas, Margarida
dc.contributor.authorClaro, Ana Marília
dc.contributor.authorMagalhães, Ana Luísa
dc.contributor.authorPatrício, Maria Sameiro
dc.date.accessioned2011-03-17T14:44:54Z
dc.date.available2011-03-17T14:44:54Z
dc.date.issued2010
dc.description.abstractThe present study was conducted in a 10-year-old trial of mixed plantation located in the Northeast of Portugal. This study was developed in the three following treatments: pure of Robinia pseudoacacia; pure of Prunus avium and mixed of Prunus avium × Robinia pseudoacacia. To better understand the benefit of the consociation of an N-fixing species (Robinia pseudoacacia) with broadleaves quality timber production (Prunus avium), we compared the soil microbial biomass carbon and nitrogen, soil respiration and N-mineralization of these three situations. Net mineralization or immobilization of N in field soils is calculated from measured changes in the mineral-N content of largely undisturbed soil isolated inside tubes in situ. Soil microbial biomass carbon (SMB-C) and nitrogen (SMB-N) were determined by fumigation-extraction method. We also determined the ratio of SMB-C to soil organic carbon (Cmic/Corg) as an indicator of soil organic matter quality or availability, and the metabolic quotient (qCO2) as a measure of microbial efficiency. Microorganisms are generally considered as the driving force or catalyst behind the decomposition process. In this sense, the magnitude Microbial biomass C (MBC) may indicate potential rate of C flux. Indeed, MBC is commonly described as a living or active pool in models that simulate organic C turnover in soils, and the size of this pool directly affects the model outputs. Soil enzymes are mostly of microbial origin and are closely related to microbial biomass. Desidrogenase is one of the most frequently used enzyme tests for the measurement of total microbial activity in soil. This was the methodology used in this study.por
dc.identifier.citationPereira, Ermelinda; Santos, Sónia A. P.; Arrobas, Margarida; Claro, A. Marília; Magalhães, Ana Luísa; Patrício, M. Sameiro (2010). Microbial biomass and n mineralization in mixed plantations of broadleaves and nitrogen-fixing species. In Mixed and Pure Forests in a Changing World; IUFRO Conference. Vila Real. ISBN 9789726699804por
dc.identifier.urihttp://hdl.handle.net/10198/3651
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherUTADpor
dc.relationMIXED FORESTS. MODELLING, DYNAMICS AND GEOGRAPHICAL DISTRIBUTION OF PRODUCTIVITY AND CARBON STORAGE IN MIXED FOREST ECOSYSTEMS IN PORTUGAL
dc.subjectMetabolic quotientpor
dc.subjectMineralization Npor
dc.subjectDesydrogenase activitypor
dc.subjectMicrobial respirationpor
dc.titleMicrobial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing speciespor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleMIXED FORESTS. MODELLING, DYNAMICS AND GEOGRAPHICAL DISTRIBUTION OF PRODUCTIVITY AND CARBON STORAGE IN MIXED FOREST ECOSYSTEMS IN PORTUGAL
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAGR-CFL%2F68186%2F2006/PT
oaire.citation.conferencePlaceUTAD, Vila Realpor
oaire.citation.titleMixed and Pure Forests in a Changing World; IUFRO Conferencepor
oaire.fundingStream5876-PPCDTI
person.familyNamePereira
person.familyNameSantos
person.familyNameArrobas
person.familyNamePatrício
person.givenNameErmelinda
person.givenNameSónia
person.givenNameMargarida
person.givenNameMaria Sameiro
person.identifier.ciencia-id3916-218E-1629
person.identifier.ciencia-id5C1D-7CF5-601C
person.identifier.ciencia-id971C-B85B-1EC0
person.identifier.ciencia-id6310-0055-C4A0
person.identifier.orcid0000-0002-9431-5059
person.identifier.orcid0000-0003-1500-6360
person.identifier.orcid0000-0002-4652-485X
person.identifier.orcid0000-0001-7773-8802
person.identifier.ridG-6811-2014
person.identifier.scopus-author-id35222107200
person.identifier.scopus-author-id7102756340
person.identifier.scopus-author-id8575728800
person.identifier.scopus-author-id35222136400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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