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Relationships among precipitation regime, nutrient availability, and carbon turnover in tropical rain forests

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dc.creatorPosada Hostettler, Juan Manuel Robertospa
dc.creatorSchuur E.A.G.spa
dc.date.accessioned2020-05-25T23:57:40Z
dc.date.available2020-05-25T23:57:40Z
dc.date.created2011spa
dc.description.abstractThe effect of high precipitation regime in tropical forests is poorly known despite indications of its potentially negative effects on nutrient availability and carbon (C) cycling. Our goal was to determine if there was an effect of high rainfall on nitrogen (N) and phosphorous (P) availability and indexes of C cycling in lowland tropical rain forests exposed to a broad range of mean annual precipitation (MAP). We predicted that C turnover time would increase with MAP while the availability of N and P would decrease. We studied seven Neotropical lowland forests covering a MAP range between 2,700 and 9,500 mm. We used radiocarbon ({increment}14C) from the atmosphere and respired from soil organic matter to estimate residence time of C in plants and soils. We also used C, N, and P concentrations and the stable isotope ratio of N (?15N) in live and dead plant tissues and in soils as proxies for nutrient availability. Negative ?15N values indicated that the wettest forests had N cycles that did not exhibit isotope-fractionating losses and were potentially N-limited. Element ratios (N:P and C:P) in senescent leaves, litter, and live roots showed that P resorption increased considerably with MAP, which points towards increasing P-limitation under high MAP regimes. Soil C content increased with MAP but C turnover time only showed a weak relationship with MAP, probably due to variations in soil parent material and age along the MAP gradient. In contrast, comparing C turnover directly to nutrient availability showed strong relationships between C turnover time, N availability (?15N), and P availability (N:P) in senescent leaves and litter. Thus, an effect of MAP on carbon cycling appeared to be indirectly mediated by nutrient availability. Our results suggest that soil nutrient availability plays a central role in the dynamic of C cycling in tropical rain forests. © 2011 Springer-Verlag.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1007/s00442-010-1881-0
dc.identifier.issn00298549
dc.identifier.issn14321939
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/22719
dc.language.isoengspa
dc.relation.citationEndPage795
dc.relation.citationIssueNo. 3
dc.relation.citationStartPage783
dc.relation.citationTitleOecologia
dc.relation.citationVolumeVol. 165
dc.relation.ispartofOecologia, ISSN:00298549, 14321939, Vol.165, No.3 (2011); pp. 783-795spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79951551595&doi=10.1007%2fs00442-010-1881-0&partnerID=40&md5=833c67a9d36929cf7b1c0e20e9f8c0d1spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordCarbonspa
dc.subject.keywordNitrogenspa
dc.subject.keywordPhosphorusspa
dc.subject.keywordRainspa
dc.subject.keywordCarbon budgetspa
dc.subject.keywordCarbon isotopespa
dc.subject.keywordForest ecosystemspa
dc.subject.keywordForest soilspa
dc.subject.keywordNitrogen isotopespa
dc.subject.keywordNutrient availabilityspa
dc.subject.keywordPhosphorusspa
dc.subject.keywordPrecipitation (climatology)spa
dc.subject.keywordRadiocarbon datingspa
dc.subject.keywordRainforestspa
dc.subject.keywordSoil carbonspa
dc.subject.keywordSoil organic matterspa
dc.subject.keywordSoil respirationspa
dc.subject.keywordStable isotopespa
dc.subject.keywordTropical forestspa
dc.subject.keywordArticlespa
dc.subject.keywordColombiaspa
dc.subject.keywordCosta ricaspa
dc.subject.keywordMetabolismspa
dc.subject.keywordPanamaspa
dc.subject.keywordTreespa
dc.subject.keywordTropic climatespa
dc.subject.keywordCarbonspa
dc.subject.keywordColombiaspa
dc.subject.keywordCosta ricaspa
dc.subject.keywordNitrogenspa
dc.subject.keywordPanamaspa
dc.subject.keywordPhosphorusspa
dc.subject.keywordRainspa
dc.subject.keywordTreesspa
dc.subject.keywordTropical climatespa
dc.subject.keywordCarbon cyclespa
dc.subject.keywordNitrogenspa
dc.subject.keywordPhosphorousspa
dc.subject.keywordRadiocarbonspa
dc.subject.keywordStable isotopesspa
dc.titleRelationships among precipitation regime, nutrient availability, and carbon turnover in tropical rain forestsspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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