Annual Growth Bands in Hymenaea courbaril Metadata

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Title

  • Main Title Annual Growth Bands in Hymenaea courbaril

Creator

  • Author: Westbrook, J A
    Creator Type: Personal
  • Author: Guilderson, T P
    Creator Type: Personal
  • Author: Colinvaux, P A
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2004-02-09

Language

  • English

Description

  • Content Description: One significant source of annual temperature and precipitation data arises from the regular annual secondary growth rings of trees. Several tropical tree species are observed to form regular growth bands that may or may not form annually. Such growth was observed in one stem disk of the tropical legume Hymenaea courbaril near the area of David, Panama. In comparison to annual reference {Delta}{sup 14}C values from wood and air, the {Delta}{sup 14}C values from the secondary growth rings formed by H. courbaril were determined to be annual in nature in this one stem disk specimen. During this study, H. courbaril was also observed to translocate recently produced photosynthate into older growth rings as sapwood is converted to heartwood. This process alters the overall {Delta}{sup 14}C values of these transitional growth rings as cellulose with a higher {Delta}{sup 14}C content is translocated into growth rings with a relatively lower {Delta}{sup 14}C content. Once the annual nature of these growth rings is established, further stable isotope analyses on H. courbaril material in other studies may help to complete gaps in the understanding of short and of long term global climate patterns.
  • Physical Description: PDF-file: 15 pages; size: 0.2 Mbytes

Subject

  • Keyword: Air
  • Keyword: Climates
  • Keyword: Panama
  • Keyword: Trees
  • Keyword: Cellulose
  • Keyword: Wood
  • Keyword: Stable Isotopes
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Precipitation

Source

  • Journal Name: International Association of Wood Anatomists Bulletin, vol. 27, no. 2, May 1, 2006, pp. 193-197; Journal Volume: 27; Journal Issue: 2

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: UCRL-JRNL-202325
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 902362
  • Archival Resource Key: ark:/67531/metadc888046