Skip to main content
U.S. flag

An official website of the United States government

Forensic Analysis of Cites-Protected Dalbergia Timber from the Americas

Author(s):

Edgard O. Espinoza
Josefina Barajas-Morales
Gabriela D. Chavarria
Pamela J. McClure

Year:

2015

Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Forest Products Laboratory

Source:

IAWA Journal, Volume 36, Number 3, 2015; pp. 311-325.

Description

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.

Citation

Espinoza, Edgard O.; Wiemann, Michael C.; Barajas-Morales, Josefina; Chavarria, Gabriela D.; McClure, Pamela J. 2015. Forensic Analysis of Cites-Protected Dalbergia Timber from the Americas. IAWA Journal, Volume 36, Number 3, 2015; pp. 311-325.

Publication Notes

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
https://www.fs.usda.gov/treesearch/pubs/49170