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| Titel |
Multi-scale comparisons of tree composition in Amazonian terra firme forests |
| VerfasserIn |
E. N. Honorio Coronado, T. R. Baker, O. L. Phillips, N. C. A. Pitman, R. T. Pennington, R. Vásquez Martínez, A. Monteagudo, H. Mogollón, N. Dávila Cardozo, M. Ríos, R. García-Villacorta, E. Valderrama, M. Ahuite, I. Huamantupa, D. A. Neill, W. F. Laurance, H. E. M. Nascimento, S. Soares de Almeida, T. J. Killeen, L. Arroyo, P. Núñez, L. Freitas Alvarado |
| 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 (2009-11-30), S.2719-2731 |
| Datensatznummer |
250004104
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| Publikation (Nr.) |
 copernicus.org/bg-6-2719-2009.pdf |
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| Zusammenfassung |
| We explored the floristic composition of terra firme forests across Amazonia
using 55 plots. Firstly, we examined the floristic patterns using both
genus- and species-level data and found that the species-level analysis more
clearly distinguishes among forests. Next, we compared the variation in plot
floristic composition at regional- and continental-scales, and found that
average among-pair floristic similarity and its decay with distance behave
similarly at regional- and continental-scales. Nevertheless, geographical
distance had different effects on floristic similarity within regions at distances <100 km,
where north-western and south-western Amazonian regions showed greater
floristic variation than plots of central and eastern Amazonia. Finally, we
quantified the role of environmental factors and geographical distance for
determining variation in floristic composition. A partial Mantel test
indicated that while geographical distance appeared to be more important at
continental scales, soil fertility was crucial at regional scales within
western Amazonia, where areas with similar soil conditions were more likely
to share a high number of species. Overall, these results suggest that
regional-scale variation in floristic composition can rival
continental-scale differences within Amazonian terra firme forests, and that
variation in floristic composition at both scales is influenced by
geographical distance and environmental factors, such as climate and soil
fertility. To fully account for regional-scale variation in continental
studies of floristic composition, future floristic studies should focus on
forest types poorly represented at regional scales in current datasets, such
as terra firme forests with high soil fertility in north-western Amazonia. |
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