Estimation of the depth of water uptake by tropical trees; the mechanisms for the flowering frequency and timing in general flowering

• Project/Area Number: 26660124
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Forest science
• Research Institution: Nagoya University
• Principal Investigator: NAKAGAWA Michiko 名古屋大学, 生命農学研究科, 准教授 (70447837)
• Co-Investigator(Kenkyū-buntansha): MATSUO Naoko 三重大学, 大学院生物資源学研究科, 講師 (00423012)
• Research Collaborator: KAWAHARA Kazuma
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 開花頻度 / 吸水深度 / 東南アジア熱帯雨林 / 一斉開花 / 安定同位体分析 / 湿潤熱帯林 / 根系形態 / ボルネオ

Outline of Final Research Achievements

We hypothesized that the interspecific differences in water uptake depth may influence the flowering frequency and timing in general flowering (GF) among tree species in lowland tropical rain forests in Southeast Asia. The flowering frequency differed significantly among species and 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-shot and sequence-sampling methods. Although both an unclear vertical profile of soil water δ18O and the short sampling term made it difficult to determine the water uptake depth using either method, δ18O of shallower soil and high-frequency flowering dipterocarp trees seems to fluctuate more largely. However, an accurate estimation of vertical pattern of soil water use using long-term sequence-sampling method is required to fully test our hypothesis.

Research Products

• [Int'l Joint Research] サラワク森林局(マレーシア)
• [Journal Article] Depth of water uptake and flowering frequency of dipterocarp trees. (2016)
  • Author(s): Kazuma Kawahara, Naoko Matsuo, Shoko Sakai, Michiko Nakagawa
  • Journal Title: Proceedings of Frontier in Tropical Forest Research Volume: なし
  • NAID: 120006345054
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Chronosequential changes in species richness of forest-edge-dwelling butterflies during forest restoration after swidden cultivation in a humid tropical rainforest region in Borneo. (2015)
  • Author(s): T. Itioka, K. Takenaka Takano, K. Kishimoto-Yamada, T. Tzuchiya, Y. Ohshima, R. Katsuyama, M. Yago, O. Yata, M. Nakagawa, T. Nakashizuka
  • Journal Title: Journal of Forest Research Volume: (印刷中) Issue: 1 Pages: 125-134
  • DOI: 10.1007/s10310-014-0444-3
  • Peer Reviewed
• [Journal Article] Variations in soil respiration around emergent trees during an induced drought in a Bornean tropical rainforest, Malaysia. (2015)
  • Author(s): Ohashi, M., Kume, T., Yosifuji, N., Kho, LK, Nakashizuka, T.
  • Journal Title: Plant and Soil Volume: 387 Issue: 1-2 Pages: 337-349
  • DOI: 10.1007/s11104-014-2303-6
  • Peer Reviewed
• [Journal Article] Biotic and abiotic drivers of dipterocarp seedling survival following mast fruiting in Malaysian Borneo. (2015)
  • Author(s): C.Oshima, Y.Tokumoto, M.Nakagawa
  • Journal Title: Journal of Tropical Ecology Volume: 31 Issue: 2 Pages: 129-137
  • DOI: 10.1017/s026646741400073x
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spatiotemporal Variability in the Reproductive Success of the Continually Flowering Shrub Dillenia suffruticosa in Borneo. (2014)
  • Author(s): TOKUMOTO Yuji、SAKAI Shoko、MATSUSHITA Michinari、OHKUBO Tatsuhiro、NAKAGAWA Michiko
  • Journal Title: Biotropica Volume: 46 Issue: 5 Pages: 583-590
  • DOI: 10.1111/btp.12135
  • Peer Reviewed
• [Presentation] Calculation of Individual Tree Water Use in a Bornean Tropical Rain Forest Using Individual-Based Dynamic Vegetation Model SEIB-DGVM (2015)
  • Author(s): Taro Nakai, Tomo’omi Kumagai, Takami Saito, Kazuho Matsumoto, Tomonori Kume, Michiko Nakagawa, Hisashi Sato
  • Organizer: 2015 AGU Fall Meeting
  • Place of Presentation: Moscone Center, San Francisco
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] The depth of water uptake and flowering frequency of dipterocarp trees (2015)
  • Author(s): Kazuma Kawahara, Naoko Matsuo, Shoko Sakai, Michiko Nakagawa
  • Organizer: Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak
  • Place of Presentation: Imperial Hotel, Kuching, Sarawak
  • Year and Date: 2015-09-21
  • Int'l Joint Research
• [Presentation] 湿潤熱帯林におけるフタバガキ科樹木の吸水深度と開花 (2015)
  • Author(s): 川原和眞・中川弥智子・松尾奈緒子・青木万実・小杉緑子・酒井章子
  • Organizer: 第62回日本生態学会大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2015-03-18 – 2015-03-22
• [Presentation] Interspecific relationships of wood traits between stem and root. (2014)
  • Author(s): M. Nakagawa, M. Hori, R. Dan, H. Kurokawa
  • Organizer: The 6th symposium on physiological processes in roots of woody plants
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-09 – 2014-09-11
• [Presentation] The relationship between flowering frequency and depth of water uptake by trees in Bornean tropical forest. (2014)
  • Author(s): K. Kawahara
  • Organizer: The 6th symposium on physiological processes in roots of woody plants
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-09 – 2014-09-11
• [Book] Social-Ecological Systems in Transition （分担執筆） (2014)
  • Author(s): K.Takenaka Takano, M.Nakagawa, T.Itioka, K.Kishimoto-Yamada, S.Yamashita, H.O.Tanaka, D.Fukuda, H.Nagamasu, M.Ichikawa, Y.Kato, K.Momose, T.Nakashizuka, S.Sakai
  • Total Pages: 198
  • Publisher: Springer