RT Journal Article
T1 Exploring wood anatomy, density and chemistry profiles to understand the tree-ring formation in Amazonian tree species
A1 Ortega Rodriguez, Daigard Ricardo
A1 Hevia, Andrea
A1 Sánchez-Salguero, Raúl
A1 Santini Jr., Luiz
A1 Pereira De Carvalho, Hudson Wallace
A1 Roig, Fidel Alejandro
A1 Tomazello-Filho, Mario
K1 Tree-ring boundary
K1 Angiosperm
K1 Fibre wall thickness
K1 Marginal parenchyma
K1 X-ray densitometry
K1 X-ray fluorescence
AB Long-term analysis of tree growth using annual tree rings is increasingly in demand for tropical tree species. The basis of these studies has traditionally been the anatomical identification of the annual ring boundary. However, the structure of these annual rings has been sparsely explored for complementary physical and chemical wood traits. Here, we explore the relationships among wood density features and chemical elements (S, K, Ca, Mn) involved in the annual tree ring formation of 12 tropical tree species from non-flooded forest in the southern Amazon basin. Transverse wood sections were used for each species to determine: 1) macroscopic distinction (radial growth and wood density), 2) microscopic analyse of vessels, axial and ray parenchyma (anatomy) and 3) X-ray densitometry (physical) and X-ray fluorescence (chemical). For some species, the profiles of wood density, and Ca and Mn content showed intra- and inter-annual patterns that allowed to define and characterize the growth boundary of tree rings. Ca, K and S were mainly distributed in axial parenchyma cells, and around vessels, whereas, Mn was mainly distributed in fibres. Our results showed significant species-specific correlations between tree-ring width, density and concentrations of Ca, K and Mn. The anatomical characterization and the complementary information provided by the density and chemical profiles in some Amazonian species can represent a valuable proxy to improve the definition of annual ring-boundaries and improve the understanding of long-term growth and physiological patterns.
PB Elsevier
YR 2022
FD 2022
LK https://hdl.handle.net/10433/25896
UL https://hdl.handle.net/10433/25896
LA en
NO Volume 71, February 2022, 125915
NO Universidad Pablo de Olavide. Departamento de Sistemas Físicos, Químicos y Naturales
DS RIO
RD May 9, 2026