The Patriarch: a Canary Islands juniper that has survived human pressure and volcanic activity for a millennium.
Published in Ecology
The functional implications of tracheary connections across growth rings in four northern hardwood trees.
Published in Annals of botany
Deciduous angiosperm trees transport xylem sap through trunks and branches in vessels within annual growth rings. Utilizing previous growth rings for sap transport could increase vessel network size and redundancy but may expose new xylem to residual air embolisms in the network. Despite the important role of vessel networks in sap transport and dr...
Maiasaura (Dinosauria: Hadrosauridae) Tibia Osteohistology Reveals Non-annual Cortical Vascular Rings in Young of the Ye...
Published in Frontiers in Earth Science
Annually, tetrapod vertebrate bone apposition is briefly interrupted, which typically coincides with the yearly environmental nadir. The temporary appositional hiatus is histologically recorded in bone cortex as a hypermineralized ring termed a line of arrested growth (LAG). One paleohistology study used this known LAG periodicity to quantify ontog...
Fire records in tree rings of Moquiniastrum polymorphum: potential for reconstructing fire history in the Brazilian Atla...
ABSTRACT Fire disturbance affects the composition, structure and dynamics of vegetation. Historical records of fire events exist in some places, but they are generally limited in temporal and spatial extent. Tree-ring research is a useful tool for fire history reconstruction and can contribute important long-term ecological data. We tested the hypo...
[Morphological, microscopic, multiple-component assay and fingerprinting based systematic research on quality evaluation...
Published in Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
The purpose of this study was to combine morphological, microscopic, UHPLC multiple-component assay and fingerprinting studies in order to evaluate the quality of Moutan Cortex (MC) systematically. The root system of Paeonia suffruticosa was measured to compare the morphological variation and the chemical composition of different grades of MC was d...
Growth rings in roots of medicinal perennial dicotyledonous herbs from temperate and subtropical zones in China.
Published in Microscopy research and technique
Growth years are closely related to the quality of Chinese medicinal materials, and they can provide a reliable basis for quality evaluation on crude drugs in accordance with the suitable growth years. Herbchronology, the numerical and pattern analysis of annual growth rings in herbaceous perennials, has emerged to be a recognized science that is a...
Indicadores del decaimiento en bosques de Nothofagus pumilio en el norte de la Patagonia, Argentina
Abstract Forest decline is associated with partial or total crown mortality in a large percentage of trees at the stand level. While forest decline has been reported on a global context, the relationships between the external conditions of trees and their radial growth have rarely been reported. This study relates the intensity of decline with radi...
Anatomía y anualidad de los anillos de crecimiento de tres especies del bosque seco tropical del Caribe de Colombia.
Abstract: In transverse sections of the wood of Anacardium excelsum (Bertero ex Kunth.) Skeels., Bursera simaruba (L.) Sarg. and Aspidosperma polyneuron Müll. Arg., the anatomy was characterized and the annual growth rings were differentiated. These species grow in the dry tropical forests of the reserve of Besotes and Rio de Janeiro in Valledupar ...
[Growth rings in roots of seven Sect. Paeonia species and its application on identification of Paeoniae Radix Rubra].
Published in Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
The growth years of medicinal materials are closely related to their quality, and "Herb-chronology" has been used to determine the growth years of perennial dicotyledonous plants in recent years. On the basis of conventional paraffin section and freehand section, the anatomical study on roots of seven Sect. Paeonia species and main roots of cultiva...
Anatomía de la madera de especies de la selva baja caducifolia de Tamaulipas, México
Wood anatomy of 21 species of the deciduous dry forest at Tamaulipas, Mexico was studied with the aim of contributing to their anatomical knowledge and to compare their attributes with each other and with other deciduous dry forest of Mexico. The results showed growth rings, and 52% of them have diffuse porosity. Fibers were libriform with thick wa...
