Inter-site variation in allometry and wood density of Goupia glabra Aubl. in Amazonia/Variacao entre-sitios na alometria e densidade da madeira de Goupia glabra Aubl. na Amazonia

The present study aims to compare the allometry and wood density of Goupia glabra Aubl. (Goupiaceae) in two different terra-firme sites in Amazonian forest. A total of 65 trees ≥ 10 cm DBH was sampled in both sites, with 39 trees in Nova Olinda do Norte (NOlinda, near the Amazon River) and 29 trees...

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Bibliographic Details
Published in:	Brazilian journal of biology Vol. 76; no. 1; p. 268
Main Authors:	Siliprandi, N.C, Nogueira, E.M, Toledo, J.J, Fearnside, P.M, Nascimento, H.E.M
Format:	Journal Article
Language:	English
Published:	São Carlos Association of the Brazilian Journal of Biology 01-02-2016 Instituto Internacional de Ecologia
Subjects:	Floods Forests Herbivores Rainforests Trees Brasil
Online Access:	Get full text
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Summary:	The present study aims to compare the allometry and wood density of Goupia glabra Aubl. (Goupiaceae) in two different terra-firme sites in Amazonian forest. A total of 65 trees ≥ 10 cm DBH was sampled in both sites, with 39 trees in Nova Olinda do Norte (NOlinda, near the Amazon River) and 29 trees in Apui (near the southern edge of the Amazon forest). Except for the relationship between DBH (diameter at breast height) and [H.sub.t] (total height), allometric relationships for G.glabra differed significantly between sites. Apui had lower intercept and greater slope for [log.sub.10] (DBH) versus [log.sub.10] ([H.sub.s]-stem height), and, conversely, greater intercept and lower slope for [log.sub.10] (DBH) versus [log.sub.10] ([C.sub.h]-crown height). The slope differed significantly between the sites for DBH versus [C.sub.d] (crown diameter), with greater slope found for NOlinda. Mean basic wood density in Apui was 8.8% lower than in NOlinda. Our findings highlight the variation in adaptive strategy of G. glabra due to environmental differences between sites. This is probably because of different canopy-understory light gradients, which result in differentiation of resource allocation between vertical and horizontal growth, which, in turn, affects mechanical support related to wood density. We also hypothesize that differences in soil fertility and disturbance regimes between sites may act concomitantly with light.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1519-6984 1678-4375
DOI:	10.1590/1519-6984.22514