Periodic Reporting for period 1 - Timtrace (Tracing tropical timber)
Okres sprawozdawczy: 2015-10-01 do 2017-03-31
In the first study on isotopic tracing for tropical timbers we found a good match between wood isotopic composition and isotopic signature of rain water, showing the potential for isotopic tracing at large spatial scales. Yet, based on wood isotopic signature we could not differentiate timber samples sourced from different concessions within an African country. In a second technical feasibility study, we found genetic differences in wood of trees derived from nearby forest concessions and were successful in assigning blind samples to concessions of origin based on DNA. During the project we significantly expanded our reference databases with isotopic and genetic information, which now contain >8500 entries from 43 tropical timbers in 19 countries, chiefly for isotopic data.