<S1-13> Depth of water uptake and flowering frequency of dipterocarp trees

• Kawahara, Kazuma

  Graduate School of Bioagricultural Sciences, Nagoya University

• マツオ, ナオコ

  Graduate School of Bioresources, Mie University

• サカイ, ショウコ

  Center for Ecological Research, Kyoto University

• ナカガワ, ミチヒコ

  Graduate School of Bioagricultural Sciences, Nagoya University (Author for correspondence)

書誌事項

タイトル別名

• Session 1: Ecology and genetics of tropical rainforest trees in Sarawak

抄録

Irregular drought has been reported to trigger general flowering (GF) in lowland tropical rain forests in Southeast Asia. We hypothesized that the interspecific differences in water uptake depth may influence the flowering frequency and timing in GF among tree species. We compared the flowering peaks between high- and low-frequency flowering trees based on the phenology data during 1993-2011. As expected, the flowering peak of high-frequency flowering species preceded that of low-frequency species. The soil water sources of the dipterocarp trees were assessed using oxygen stable isotope composition (δ18O) with snap- and sequence-shot methods. Although both an unclear vertical profile of soil water δ18O and the short sampling term made it difficult to estimate the water uptake depth using either method, δ18O of dipterocarp trees is likely influenced by flowering frequency. However, an accurate estimation of vertical pattern of soil water use by tropical trees will be required to fully test this hypothesis.

This proceeding is a compilation of findings and progress activities of research collaboration between the Forest Department Sarawak (FDS) and the Japan Research Consortium for Tropical Forests in Sarawak (JRCTS). To highlight the research findings, An International Symposium entitled "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" was ii held in Kuching, Sarawak on 21-22 September 2015.

収録刊行物

• Proceedings of the symposium "Frontier in tropical forest research: progress in joint projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak"

  Proceedings of the symposium "Frontier in tropical forest research: progress in joint projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" 2016 124-131, 2016-06

  Forest Department Sarawak (FDS); Japan Research Consortium for Tropical Forests in Sarawak (JRCTS)

キーワード

• Flowering phenology
• Stable isotope
• Tropical rain forest
• Water use pattern

詳細情報

• CRID: 1050564285805204480
• NII論文ID: 120006345054
• HANDLE: 2433/227116
• 本文言語コード: en
• 資料種別: departmental bulletin paper
• データソース種別:
  • IRDB
  • CiNii Articles
  • KAKEN