Branch xylem density variations across Amazonia
S. Patiño
(1, 2, 3)
,
J. Lloyd
(2)
,
R. Paiva
(4)
,
C. A. Quesada
(2, 5)
,
T. R. Baker
(2)
,
A. J. B. Santos
(5, 6)
,
L. M. Mercado
(7)
,
Y. Malhi
(8)
,
O. L. Phillips
(2)
,
A. Aguilar
(9)
,
E. Alvarez
(10)
,
L. Arroyo
(11)
,
Damien Bonal
(3)
,
A. C. L. Costa
(12)
,
C. I. Czimczik
(13)
,
J. Gallo
(14)
,
R. Herrera
(15)
,
N. Higuchi
(5)
,
V. Horna
(16)
,
E. J. Hoyos
(17)
,
E. M. Jimenez
(9)
,
T. Killeen
(18)
,
E. Leal
(19)
,
F. Luizão
(5)
,
P. Meir
(20)
,
A. Monteagudo
(21, 22)
,
D. Neill
(23)
,
P. Núñez-Vargas
(21)
,
W. Palomino
(21)
,
J. Peacock
(2)
,
A. Peña-Cruz
(22)
,
M. C. Peñuela
(9)
,
N. Pitman
(24)
,
N. Priante Filho
(25)
,
A. Prieto
(1)
,
S. N. Panfil
(26)
,
A. Rudas
(27)
,
R. Salomão
(19)
,
N. Silva
(28, 29)
,
M. Silveira
(30)
,
S. Soares de Almeida
(19)
,
A. Torres-Lezama
(31)
,
J. D. Turriago
(14)
,
R. Vásquez-Martínez
(21)
,
M. Schwarz
(15)
,
A. Sota
(15)
,
J. Schmerler
(15)
,
I. Vieira
(19)
,
B. Villanueva
(14)
,
P. Vitzthum
(9)
1
Instituto de Investigación de Recursos Biológicos Alexander von Humboldt = Alexander von Humboldt Biological Resources Research Institute
2 Earth and Biosphere Institute
3 ECOFOG - Ecologie des forêts de Guyane
4 Secretrária Municipal de Desenvolvimento e Meio Ambiente na Prefeitura Municipal de Maués
5 INPA - Instituto Nacional de Pesquisas da Amazônia = National Institute of Amazonian Research
6 Departamento de Ecologia
7 CEH - Centre for Ecology and Hydrology
8 University of Oxford
9 Universidad Nacional de Colombia Sede Amazonía
10 Equipo de Gestión Ambiental
11 Museo Noel Kempff Mercado
12 Universidade Federal de Pará
13 ESS - Department of Earth System Science [Irvine]
14 Departamento de Biología
15 MPI-BGC - Max-Planck-Institut für Biogeochemie
16 Abteilung Ökologie und Ökosystemforschung
17 Departamento de Ciencias Forestales
18 Center for Applied Biodiversity Science
19 MPEG - Museu Paraense Emílio Goeldi [Belém, Brésil]
20 School of Geography
21 Herbario Vargas
22 Proyecto Flora del Perú
23 Herbario Nacional del Ecuador
24 Center for Tropical Conservation
25 UFMT - Universidade Federal do Mato Grosso
26 Department of Botany
27 Instituto de Ciencias Naturales
28 CIFOR - Center for International Forestry Research
29 EMBRAPA Amazonia Oriental
30 Departamento de Ciências da Natureza
31 Facultad de Ciencias Forestales y Ambiental
2 Earth and Biosphere Institute
3 ECOFOG - Ecologie des forêts de Guyane
4 Secretrária Municipal de Desenvolvimento e Meio Ambiente na Prefeitura Municipal de Maués
5 INPA - Instituto Nacional de Pesquisas da Amazônia = National Institute of Amazonian Research
6 Departamento de Ecologia
7 CEH - Centre for Ecology and Hydrology
8 University of Oxford
9 Universidad Nacional de Colombia Sede Amazonía
10 Equipo de Gestión Ambiental
11 Museo Noel Kempff Mercado
12 Universidade Federal de Pará
13 ESS - Department of Earth System Science [Irvine]
14 Departamento de Biología
15 MPI-BGC - Max-Planck-Institut für Biogeochemie
16 Abteilung Ökologie und Ökosystemforschung
17 Departamento de Ciencias Forestales
18 Center for Applied Biodiversity Science
19 MPEG - Museu Paraense Emílio Goeldi [Belém, Brésil]
20 School of Geography
21 Herbario Vargas
22 Proyecto Flora del Perú
23 Herbario Nacional del Ecuador
24 Center for Tropical Conservation
25 UFMT - Universidade Federal do Mato Grosso
26 Department of Botany
27 Instituto de Ciencias Naturales
28 CIFOR - Center for International Forestry Research
29 EMBRAPA Amazonia Oriental
30 Departamento de Ciências da Natureza
31 Facultad de Ciencias Forestales y Ambiental
Damien Bonal
- Fonction : Auteur
- PersonId : 184161
- IdHAL : damien-bonal
- ORCID : 0000-0001-9602-8603
- IdRef : 145309525
Résumé
Measurements of branch xylem density, Dx, were made for 1466 trees representing 503 species, sampled from 80 sites across the Amazon basin. Measured values ranged from 240 kg m?3 for a Brosimum parinarioides from Tapajos in West Pará, Brazil to 1130 kg m?3 for an Aiouea sp. from Caxiuana, Central Pará, Brazil. Analysis of variance showed significant differences in average Dx across the sample plots as well as significant differences between families, genera and species. A partitioning of the total variance in the dataset showed that geographic location and plot accounted for 33% of the variation with species identity accounting for an additional 27%; the remaining "residual" 40% of the variance accounted for by tree to tree (within species) variation. Variations in plot means, were, however, hardly accountable at all by differences in species composition. Rather, it would seem that variations of xylem density at plot level must be explained by the effects of soils and/or climate. This conclusion is supported by the observation that the xylem density of the more widely distributed species varied systematically from plot to plot. Thus, as well as having a genetic component branch xylem density is a plastic trait that, for any given species, varies according to where the tree is growing and in a predictable manner. Exceptions to this general rule may be some pioneers belonging to Pourouma and Miconia and some species within the genera Brosimum, Rinorea and Trichillia which seem to be more constrained in terms of this plasticity than most species sampled as part of this study.
Origine : Accord explicite pour ce dépôt
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