Abstract
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 Apuí (near the southern edge of the Amazon forest). Except for the relationship between DBH (diameter at breast height) and Ht (total height), allometric relationships for G.glabra differed significantly between sites. Apuí had lower intercept and greater slope for log10 (DBH) versus log10 (Hs - stem height), and, conversely, greater intercept and lower slope for log10 (DBH) versus log10 (Ch - crown height). The slope differed significantly between the sites for DBH versus Cd (crown diameter), with greater slope found for NOlinda. Mean basic wood density in Apuí 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.
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Claims 7
Claim · model-written summary
Allometric relationships of Goupia glabra differed significantly between the two sites, except DBH versus total height.
- Taxon
- Goupia glabra
Goupia glabrae0 - Outcome
- allometric relationshipse1
- Setting
- two different terra-firme sitese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e1“Except for the relationship between DBH (diameter at breast height) and Ht (total height), allometric relationships for G.glabra differed significantly between sites”
Claim · model-written summary
Apuí had a lower intercept for log10 (DBH) versus log10 (Hs - stem height).
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- log10 (DBH) versus log10 (Hs - stem height)e2
- Direction
- lower intercepte2
- Setting
- Apuíe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e2“Apuí had lower intercept and greater slope for log10 (DBH) versus log10 (Hs - stem height)”
Claim · model-written summary
Apuí had a greater slope for log10 (DBH) versus log10 (Hs - stem height).
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- log10 (DBH) versus log10 (Hs - stem height)e2
- Direction
- greater slopee2
- Setting
- Apuíe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e2“Apuí had lower intercept and greater slope for log10 (DBH) versus log10 (Hs - stem height)”
Claim · model-written summary
Apuí had a greater intercept and a lower slope for log10 (DBH) versus log10 (Ch - crown height).
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- log10 (DBH) versus log10 (Ch - crown height)e3
- Direction
- greater intercepte3
- Setting
- Apuíe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e2“Apuí had lower intercept and greater slope for log10 (DBH) versus log10 (Hs - stem height)”
e3“and, conversely, greater intercept and lower slope for log10 (DBH) versus log10 (Ch - crown height)”
Claim · model-written summary
The slope of DBH versus crown diameter was greater in NOlinda than in Apuí.
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- DBH versus Cd (crown diameter)e4
- Direction
- greater slopee4
- Comparator
- NOlindae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e4“The slope differed significantly between the sites for DBH versus Cd (crown diameter), with greater slope found for NOlinda”
Claim · model-written summary
Mean basic wood density in Apuí was 8.8% lower than in NOlinda.
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- Mean basic wood densitye5
- Direction
- lowere5
- Value
- 8.8%e5
- Comparator
- NOlindae5
- Setting
- Apuíe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e5“Mean basic wood density in Apuí was 8.8% lower than in NOlinda”
Claim · model-written summary
Differences in light gradients between sites probably drive different allocation of resources between vertical and horizontal growth in Goupia glabra.
- Taxon
- Goupia glabraGoupia glabrae0
- Outcome
- resource allocation between vertical and horizontal growthe6
- Qualifier
- canopy-understory light gradientse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
e6“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”