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dc.contributor.authorSchrodt, Franziska-
dc.contributor.authornull, Tomas-
dc.contributor.authorFeldpausch, Ted R.-
dc.contributor.authorSaiz, Gustavo-
dc.contributor.authorQuesada, Carlos Alberto-
dc.contributor.authorSchwarz, Michael-
dc.contributor.authorIshida, Francoise Yoko-
dc.contributor.authorCompaoré, Halidou-
dc.contributor.authorDiallo, Adama-
dc.contributor.authorDjagbletey, Gloria Djaney-
dc.contributor.authorHien, Fidèle-
dc.contributor.authorSonké, Bonaventure-
dc.contributor.authorToedoumg, Herman-
dc.contributor.authorZapfack, Louis-
dc.contributor.authorHiernaux, Pierre H.Y.-
dc.contributor.authorMougin, Éric-
dc.contributor.authorBird, Michael I.-
dc.contributor.authorGrace, John-
dc.contributor.authorLewis, Simon L.-
dc.contributor.authorVeenendaal, Elmar M.-
dc.contributor.authorLloyd, Jon-
dc.description.abstractVariations in leaf mass per unit area (Ma) and foliar concentrations of N, P, C, K, Mg and Ca were determined for 365 trees growing in 23 plots along a West African precipitation gradient ranging from 0.29 to 1.62m a-1. Contrary to previous studies, no marked increase in Ma with declining precipitation was observed, but savanna tree foliar [N] tended to be higher at the drier sites (mass basis). Generally, Ma was slightly higher and [N] slightly lower for forest vs savanna trees with most of this difference attributable to differences in soil chemistry. No systematic variations in [P], [Mg] and [Ca] with precipitation or between trees of forest vs savanna stands were observed. We did, however, find a marked increase in foliar [K] of savanna trees as precipitation declined, with savanna trees also having a significantly lower [K] than those of nearby forest. These differences were not related to differences in soil nutrient status and were accompanied by systematic changes in [C] of opposite sign. We suggest an important but as yet unidentified role for K in the adaption of savanna species to periods of limited water availability; with foliar [K] being also an important factor differentiating tree species adapted to forest vs savanna soils within the 'zone of transition' of Western Africa. © CSIRO 2015.en
dc.relation.ispartofVolume 42, Número 1, Pags. 63-83pt_BR
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazil*
dc.subjectConcentration (composition)en
dc.subjectEnvironmental Effecten
dc.subjectLeaf Area Indexen
dc.subjectLimiting Factoren
dc.subjectSoil Chemistryen
dc.subjectSoil Nutrienten
dc.subjectTransition Zoneen
dc.subjectWater Availabilityen
dc.subjectWest Africaen
dc.titleFoliar trait contrasts between African forest and savanna trees: Genetic versus environmental effectsen
dc.publisher.journalFunctional Plant Biologypt_BR
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