IAWA journal / International Association of Wood Anatomists (IAWA J)

Publisher: International Association of Wood Anatomists, Brill Academic Publishers

Current impact factor: 1.07

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 1.074
2013 Impact Factor 0.957
2012 Impact Factor 0.795
2011 Impact Factor 1.042
2010 Impact Factor 1.239
2009 Impact Factor 0.825
2008 Impact Factor 1
2007 Impact Factor 0.687
2006 Impact Factor 0.667
2005 Impact Factor 0.537
2004 Impact Factor 0.734
2003 Impact Factor 0.667
2002 Impact Factor 0.677
2001 Impact Factor 0.868
2000 Impact Factor 0.738
1999 Impact Factor 0.722
1998 Impact Factor 0.526
1997 Impact Factor 0.508
1996 Impact Factor 0.409
1995 Impact Factor 0.232
1994 Impact Factor 0.23
1993 Impact Factor 0.033

Impact factor over time

Impact factor

Additional details

5-year impact 1.19
Cited half-life >10.0
Immediacy index 0.09
Eigenfactor 0.00
Article influence 0.33
Website IAWA Journal - International Association of Wood Anatomists website
Other titles IAWA journal
ISSN 0928-1541
OCLC 28238907
Material type Periodical
Document type Journal / Magazine / Newspaper

Publisher details

Brill Academic Publishers

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-print can only be deposited after acceptance for peer-review
    • Author's post-print and Publisher's version/PDF on author's personal website
    • Author's post-print on institutional website or institutional repository
    • Must link to publisher version
    • Published source must be acknowledged
  • Classification

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Species identification of logs, planks, and veneers is difficult because they lack the traditional descriptors such as leaves and flowers. An additional challenge is that many transnational shipments have unreliable geographic provenance. Therefore, frequently the lowest taxonomic determination is genus, which allows unscrupulous importers to evade the endangered species laws. In this study we explore whether analysis of wood using a Direct Analysis in Real Time (DART) Time-Of-Flight Mass Spectrometer (TOFMS) can assist in making unequivocal species determinations of Dalbergia. DART TOFMS spectra were collected from the heartwood of eight species of Dalbergia and six other look-alike species. In all, fourteen species comprising of 318 specimens were analyzed and the species chemical profiles were examined by statistical analysis. Dalbergia nigra (CITES Appendix I) was differentiated from D. spruceana; D. stevensonii (Appendix II) was distinguished from D. tucurensis (Appendix III), and all the look-alike timbers could be readily distinguished. Surprisingly, D. retusa (Appendix III) could not be differentiated from D. granadillo, and we postulate that they are synonymous. We conclude that DART TOFMS spectra are useful in making species identifications of American Dalbergia species, and could be a valuable tool for the traditional wood anatomist.
    IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):311-325. DOI:10.1163/22941932-20150102
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper describes a new species of fossil wood, Wataria yunnanica Li et Oskolski, from the Dajie Formation of the middle Miocene in southern Yunnan province, China. This species shows the greatest similarity to the modern genus Reevesia Lindl. from the subfamily Helicteroideae of Malvaceae. The fossil specimen is ascribed to the genus Wataria Terada & Suzuki based on its combination of ring-porous wood and the presence of tile cells. It differs from other Wataria species because vessel groups are common in its latewood. This is the first record of Wataria in China. Other species of this genus have been reported from Oligocene and Miocene deposits in Japan, and from Miocene deposits in Korea. The occurrence of ring-porous wood in the Dajie Formation suggests that there may have been a seasonal (probably monsoonal) climate in southern Yunnan during the middle Miocene.
    IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):345-357. DOI:10.1163/22941932-20150105

  • IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):359-360. DOI:10.1163/22941932-00000106
  • [Show abstract] [Hide abstract]
    ABSTRACT: Mucilage is extruded from the bark of Pseudolarix amabilis and Abies nephrolepis upon injury. The aim of this study was to characterize the structure and chemical contents of mucilage extruded from mucilage cells (MCs) in the bark of these species. A large number of MCs containing translucent or dark materials in their lumina were observed in the secondary phloem of P. amabilis and A. nephrolepis. The translucent or dark materials in MCs stained positive with ruthenium red and PAS, indicating the presence of polysaccharides. The average length and diameter of MC in P. amabilis were 1500 μm and 254 μm, respectively, and the corresponding values for A. nephrolepis were 419 μm and 166 μm. Chemical analysis of low molecular weight fractions prepared from mucilage by HPAEC-PAD showed sucrose, glucose and fructose peaks, and in addition galacturonic acid and fucose peaks. Furthermore, 1H NMR spectra for the high molecular weight fraction showed the signals characteristic of pectin. This demonstrates that the mucilage consists mainly of low molecular weight carbohydrates and high molecular weight polysaccharide pectin.
    IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):300-310. DOI:10.1163/22941932-20150101

  • IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):360-361. DOI:10.1163/22941932-90001157
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    ABSTRACT: This study used statistical models for describing the spatial patterns of variation in cambium phenology and xylem cell production across the entire latitudinal distribution of a species. The studied area extends over 600 km from the 48th to the 53rd parallel in the boreal forest of Quebec, Canada. Microcores were collected weekly from April to October 2012 from 50 Black spruce [Picea mariana (Mill.) BSP] trees in five stands. The dates of occurrence of the phases of cambium phenology were identified on histological sections and correlated to the latitude and altitude of the sites by means of linear and non-linear functions. The results were used to estimate the timings of xylem growth and cell production across the sampled region. Phenology was mostly represented by linear functions. The increase in latitude and altitude produced a proportional variation in the beginning and ending of xylem differentiation, thus leading to a shorter length of the period of wood formation. The phase of cell enlargement and cell production changed according to a non-linear pattern represented by a negative exponential curve. Latitude was the factor with the greatest impact on xylem phenology, while altitude had a slight or no effect, especially for nonlinear relationships. Xylem formation is a complex process composed of several phenological phases that change across a species distribution area according to either linear or non-linear patterns. Knowledge and quantification of these patterns are important for modelling the dynamics of tree growth across wide geographical areas and for predicting productivity of forest ecosystems under climate change scenarios.
    IAWA journal / International Association of Wood Anatomists 09/2015; 36(3):270-285. DOI:10.1163/22941932-20150091

  • IAWA journal / International Association of Wood Anatomists 05/2015; 36(2):254-256. DOI:10.1163/22941932-90001668
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    ABSTRACT: Siberian larch (Larix sibirica) trees were studied in a drought-stressed, lowe-levation Taiga forest in the Altay Mountains for their potential to be used for reconstructing precipitation. A climate/growth analysis provided evidence that the tree-ring widths were strongly determined by the climatic conditions from May to July, positively by precipitation and negatively by temperature. Nevertheless, the resulting regional tree-ring chronology of Siberian larch offers only a limited possibility to perform reliable reconstructions of precipitation as only 30.8% of the total variation of the actual April-July precipitation was explainable. Drought events reflected by the chronology were compared with historical records and other tree-ring derived climate reconstructions, showing some common events of climate extremes over much of Central Asia. This new Siberian larch chronology and an earlier maximum latewood density (MXD) chronology from the neighboring region reveal that the local climate is mainly characterized by cold/wet and warm/dry situations over the past 251 years. This study demonstrates that the use of both tree-ring width and MXD data may increase information of past climate variability in the Altay mountain region.
    IAWA journal / International Association of Wood Anatomists 05/2015; 36(2):242-253. DOI:10.1163/22941932-00000097