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Details for article 20 of 211 found articles
| Title: |
Basin-wide variations in foliar properties of Amazonian forest: phylogeny, soils and climate |
| Author: |
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. Jiménez F. J. Luizão D. A. Neill N. Silva A. Prieto A. Rudas M. Silviera I. C. G. Vieira G. Lopez-Gonzalez Y. Malhi O. L. Phillips J. Lloyd |
| Appeared in: |
Biogeosciences discussions |
| Paging: | Volume 6 (2009) nr. 2 pages 3707-3769 |
| Year: |
2009 |
| Contents: |
We analysed 1040 individual trees, positioned in sixty three plots across the Amazon Basin for leaf mass per area (MA), leaf carbon isotope composition (δ<sup>13C) and leaf level concentrations of C, N, P, Ca, Mg, K and Al. All trees were identified to the species with the dataset containing 58 families, 236 genera and 508 species, distributed across a wide range of soil types and precipitation regimes. Some foliar characters 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 δ<sup>13C 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 δ<sup>13C 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 δ<sup>13C composition 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 δ<sup>13C, 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. |
| Publisher: |
Copernicus GmbH (provided by DOAJ) |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 20 of 211 found articles
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