effects of logging and recruitment on community phylogenetic structure in 32 permanent forest plots of kampong thom, cambodia

Hironori Toyama, Tsuyoshi Kajisa, Shuichiro Tagane, Keiko Mase, Phourin Chhang, Vanna Samreth, Vuthy Ma, Heng Sokh, Ryuji Ichihashi, Yusuke Onoda, Nobuya Mizoue, Tetsukazu Yahara

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Ecological communities including tropical rainforest are rapidly changing under various disturbances caused by increasing human activities. Recently in Cambodia, illegal logging and clear-felling for agriculture have been increasing. Here, we study the effects of logging, mortality and recruitment of plot trees on phylogenetic community structure in 32 plots in Kampong Thom, Cambodia. Each plot was 0.25 ha; 28 plots were established in primary evergreen forests and four were established in secondary dry deciduous forests. Measurements were made in 1998, 2000, 2004 and 2010, and logging, recruitment and mortality of each tree were recorded. We estimated phylogeny using rbcL and matK gene sequences and quantified phylogenetic a and b diversity. Within communities, logging decreased phylogenetic diversity, and increased overall phylogenetic clustering and terminal phylogenetic evenness. Between communities, logging increased phylogenetic similarity between evergreen and deciduous plots. On the other hand, recruitment had opposite effects both within and between communities. The observed patterns can be explained by environmental homogenization under logging. Logging is biased to particular species and larger diameter at breast height, and forest patrol has been effective in decreasing logging.

Original languageEnglish
Article number20140008
Pages (from-to)1-13
Number of pages13
JournalPhilosophical Transactions of the Royal Society B: Biological Sciences
Issue number1662
Publication statusPublished - Feb 19 2015

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology
  • General Agricultural and Biological Sciences


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