Search Results

You are looking at 1 - 10 of 38 items for :

  • All: "subject" x
  • Primary Language: English x
Clear All

Editor-in-Chief Pieter Baas, Elisabeth Anne Wheeler, Lloyd A. Donaldson and Marcelo R. Pace

To celebrate the 40th anniversary of the Journal we are offering Free Access - until 1 May 2020 - to 40 recent papers.

The IAWA Journal is an international quarterly periodical publishing original papers and review articles on any subject related with the microscope structure of wood and bark of stems and roots of woody plants (including palms and bamboo). Apart from anatomy per se, subjects at the interface of microstructure and developmental genetics, systematics, paleobotany, archaeology, tree biology, ecology, forestry, structure property relations of timber, biomechanics, wood identification, etc. are welcomed.

2018 Impact Factor: 3.182
5 Year Impact Factor: 1.968

For more information about the International Association of Wood Anatomists and the IAWA Journal, please visit the IAWA website.

Online submission: Articles for publication in IAWA Journal can be submitted online through Editorial Manager, please click here. As of July 1st 2017, full colour images and figures are published free of charge.

Need support prior to submitting your manuscript? Make the process of preparing and submitting a manuscript easier with Brill's suite of author services, an online platform that connects academics seeking support for their work with specialized experts who can help.
2017 Impact Factor: 1.903
5 Year Impact Factor: 1.671

For more information about the International Association of Wood Anatomists and the IAWA Journal, please visit the IAWA website.

Online submission: Articles for publication in IAWA Journal can be submitted online through Editorial Manager, please click here. As of July 1st 2017, full colour images and figures are published free of charge.

Need support prior to submitting your manuscript? Make the process of preparing and submitting a manuscript easier with Brill's suite of author services, an online platform that connects academics seeking support for their work with specialized experts who can help.

Peter Gasson, Paula Rudall, David Cutler, Barry Tomlinson, Elisabeth Wheeler and Pieter Baas

Mary Gregory, botanist, editor and bibliographer and from 1980 Honorary Member of IAWA passed away unexpectedly on 20 August at the age of 85 at her home in Kew, England. Throughout her career Mary helped hundreds of plant anatomists with literature references on their subject of study, either in

The Limits of Science

An Analysis from “Barriers” to “Confines”

Series:

Edited by Wenceslao J. Gonzalez

The problem of the limits of science is twofold. First, there is the problem of demarcation, i.e., the boundaries or “barriers” between what is science and what is not science. Second, there is the problem of the ceiling of scientific activity, which leads to the “confines” of this human enterprise. These two faces of the problem of the limits — the “barriers” and the “confines” of science — require a new analysis, which is the task of this book. The authors take into account the Kantian roots but they are focused on the current stage of the philosophical and methodological analyses of science. This vision looks to supersede the Kantian approach in order to reach a richer conception of science.

Anne-Laure Decombeix, Anaïs Boura and Alexandru M. F. Tomescu

central strands are absent and the architecture resembles that of a eustele. While the diversity of stelar anatomy and the evolutionary pathways that led from one type of stele to another have been the subject of many hypotheses and discussions, very little is certain regarding the processes driving the

Elisabeth A. Wheeler, Rashmi Srivastava, Steven R. Manchester and Pieter Baas

Associate-editor Michael Wiemann

forests, or mangroves subjected to strong seasonal fluctuations in salinity. Groenendijk et al. (2014) even found a significant proportion of tree species in a wet tropical forest from Central Africa to have distinct growth rings. The Deccan woods show a low percentage of taxa (19%) with distinct growth

Jie Wang, Liping Ning, Qi Gao, Shiye Zhang and Quan Chen

Edited by Lloyd A. Donaldson

atmosphere. The released CO 2 was first dried with methanol/dry ice and then collected with liquid nitrogen for subsequent graphitization. The collected CO 2 was subjected to hydrogen reduction using a cobalt catalyst, and a graphite target was prepared and placed in an AMS instrument to complete the test

Shu-Yin Zhang, Pieter Baas and Marinus Zandee

Twelve wood anatornical characters, together with broad parameters from ecology, habit and phenology were subjected to simple correlation analysis, path analysis and principal component analysis, in a total sampie of over 470 specimens belonging to 271 species of the Rosaceae from the entire distribution area of the farnily. The functional, developmental and systematic implications of the resulting relations are discussed. Based on the present analysis of ecological trends and previous phylogenetic analysis, a tentative scenario for the evolution of the Rosaceae is offered.

Wolfgang Gindl

The intra-annual distribution of cell-wall lignin concentration was determined in Austrian pine tree rings and compared with tracheid diameter, lumen width, cell wall thickness and proportion of cell wall area. Lignin concentration was highly correlated with all tracheid dimensions, but only the proportion of cell wall area exhibited a direct statistically significant relationship. Since cell dimensions in Austrian pine are subjected to the indirect and direct influences of the water status of trees, the negative correlation between cellular lignin content and the proportion of cell wall area is attributed to an indirect effect of water stress on lignification in pine tracheids.

Geoffrey M. Downes, J. Gwinyai Nyakuengama, Robert Evans, Richard Northway, Philip Blakemore, Ross L. Dickson and Marco Lausberg

The relationships between wood anatomy in standing trees and the strength of boards were examined in Pinus radiata D. Don (thinned vs thinned and fertilized) at 2 contrasting sites. Fertilizer treatments were applied after mid-rotation thinning. Logs were taper sawn and boards, near the pre-treatment / post-treatment boundary, subjected to acoustic and strength assessment. Average wood property data from a 12-mm increment core obtained prior to harvest, was extracted from the relevant portion of the radius.

In general, fertilizer resulted in lower density, higher microfibril angle (MFA) and slightly lower stiffness. However, stiffness was still relatively high as the affected wood was from the more mature portion of the radius. SilviScan density and MFA data were good predictors of stiffness. Acoustic measurements on boards were strongly correlated with board stiffness. Path analyses explained up to 45% of the variance in stiffness, as a function of estimated MOE and log sweep.