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| Titel |
Basin-wide variations in foliar properties of Amazonian forest: phylogeny, soils and climate |
| VerfasserIn |
N. M. Fyllas, S. Patiño, T. R. Baker, G. Bielefeld Nardoto, L. A. Martinelli, C. A. Quesada, R. Paiva, M. Schwarz, V. Horna, L. M. Mercado, A. Santos, L. Arroyo, E. M. Jimenez, F. J. Luizão, D. A. Neill, N. Silva, A. Prieto, A. Rudas, M. Silviera, I. C. G. Vieira, G. López-González, Y. Malhi, O. L. Phillips, J. Lloyd |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 6, no. 11 ; Nr. 6, no. 11 (2009-11-27), S.2677-2708 |
| Datensatznummer |
250004102
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| Publikation (Nr.) |
 copernicus.org/bg-6-2677-2009.pdf |
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| Zusammenfassung |
| We analysed 1040 individual trees, located in 62 plots across the Amazon
Basin for leaf mass per unit area (MA), foliar carbon isotopic
composition (δ13C) and leaf level concentrations of C, N, P,
Ca, Mg, K and Al. All trees were identified to the species level with the
dataset containing 58 families, 236 genera and 508 species, distributed
across a wide range of soil types and precipitation regimes. Some foliar
characteristics such as MA, [C], [N] and [Mg] emerge as highly
constrained by the taxonomic affiliation of tree species, but with others
such as [P], [K], [Ca] and δ13C also strongly influenced by
site growing conditions. By removing the environmental contribution to trait
variation, we find that intrinsic values of most trait pairs coordinate,
although different species (characterised by different trait suites) are
found at discrete locations along a common axis of coordination. Species
that tend to occupy higher fertility soils are characterised by a lower
MA and have a higher intrinsic [N], [P], [K], [Mg] and δ13C
than their lower fertility counterparts. Despite this consistency, different
scaling patterns were observed between low and high fertility sites.
Inter-relationships are thus substantially modified by growth environment.
Analysing the environmental component of trait variation, we found soil
fertility to be the most important predictor, influencing all leaf nutrient
concentrations and δ13C and reducing MA. Mean annual
temperature was negatively associated with leaf level [N], [P] and [K]
concentrations. Total annual precipitation positively influences MA, [C]
and δ13C, but with a negative impact on [Mg]. These results
provide a first basis for understanding the relationship between the
physiological functioning and distribution of tree species across Amazonia. |
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