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Masting in whitebark pine (Pinus albicaulis) depletes stored nutrients

hal.structure.identifierSchool of Biological Sciences [Univ California San Diego] [UC San Diego]
dc.contributor.authorSALA, Anna
hal.structure.identifierSchool of Biological Sciences [Univ California San Diego] [UC San Diego]
dc.contributor.authorHOPPING, Kelly
hal.structure.identifierUniversité Laval [Québec] [ULaval]
dc.contributor.authorMCINTIRE, Eliot J. B.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierWildlife Biology Program
dc.contributor.authorCRONE, Elizabeth E.
dc.date.issued2012
dc.identifier.issn0028-646X
dc.description.abstractEnIn masting trees, synchronized, heavy reproductive events are thought to deplete stored resources and to impose a replenishment period before subsequent masting. However, direct evidence of resource depletion in wild, masting trees is very rare. Here, we examined the timing and magnitude (local vs individual-level) of stored nutrient depletion after a heavy mast event in Pinus albicaulis. In 2005, the mast year, we compared seasonal changes in leaf and sapwood nitrogen (N) and phosphorus (P) concentrations and leaf photosynthetic rates in cone-bearing branches, branches that never produced cones, and branches with experimentally removed cones. We also compared nutrient concentrations in cone branches and branches that had never had cones between 2005 and 2006, and measured tree ring width and new shoot growth during 2005. During the mast year, N or P depletion occurred only in tissue fractions of reproductive branches, where photosynthetic rates were reduced. However, by the end of the following year, nutrients were depleted in all branches, indicating individual-level resource depletion. New shoot and radial growth were not affected by masting. We provide direct evidence that mast events in wild trees deplete stored nutrients. Our results highlight the importance of evaluating reproductive costs over time and at the individual level.
dc.language.isoen
dc.publisherWiley
dc.subjectPinus albicaulis
dc.subjecttree nutrient dynamics
dc.subject.encone production
dc.subject.enlife history trade-offs
dc.subject.enmast seeding
dc.subject.enreproductive costs
dc.subject.enresource storage
dc.title.enMasting in whitebark pine (Pinus albicaulis) depletes stored nutrients
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1469-8137.2012.04257.x
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalNew Phytologist
bordeaux.page189-199
bordeaux.volume196
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02647675
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02647675v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2012&rft.volume=196&rft.issue=1&rft.spage=189-199&rft.epage=189-199&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=SALA,%20Anna&HOPPING,%20Kelly&MCINTIRE,%20Eliot%20J.%20B.&DELZON,%20Sylvain&CRONE,%20Elizabeth%20E.&rft.genre=article


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