Drought and cool temperature cue general flowering synergistically in the aseasonal tropical forests of Southeast Asia

Akiko Satake, Yu Yun Chen, Christine Fletcher, Yoshiko Kosugi

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

The family Dipterocarpaceae, along with species from many other families, flower synchronously at irregular intervals of several years in the extensive humid forests of Southeast Asia. The intermittent mast seeding in these forests satiates seed predators whose populations remain low due to starvation in non masting periods, effectively increasing seed survival and seedling recruitment. A previous study demonstrated that a synergistic interaction between drought and cool temperatures, instead of either climate factor alone, best explains the occurrence of general flowering events observed over 14 years at the Pasoh Research Forest, Malaysia. However, several measures of drought were proposed and which drought measure should be used to explain general flowering remains untested. Here we examined the relationship between flowering of five Shorea species and three drought indices, the difference between the mean daily accumulation of precipitation and a threshold level of precipitation, water deficit and antecedent precipitation index. Our analyses confirmed that for most of Shorea species we studied the synergistic model that considers both cool temperature and drought performs the best regardless of the choice of drought index. In addition, a simplest drought measure using cumulative precipitation is sufficient to explain flowering activities in Shorea species.

元の言語英語
ページ(範囲)40-49
ページ数10
ジャーナルEcological Research
34
発行部数1
DOI
出版物ステータス出版済み - 1 1 2019

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South East Asia
tropical forests
tropical forest
flowering
drought
Shorea
temperature
masting
seed
Dipterocarpaceae
Southeast Asia
seeds
seeding
starvation
Malaysia
flower
sowing
seedling
predator
climate

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

これを引用

Drought and cool temperature cue general flowering synergistically in the aseasonal tropical forests of Southeast Asia. / Satake, Akiko; Chen, Yu Yun; Fletcher, Christine; Kosugi, Yoshiko.

:: Ecological Research, 巻 34, 番号 1, 01.01.2019, p. 40-49.

研究成果: ジャーナルへの寄稿記事

Satake, Akiko ; Chen, Yu Yun ; Fletcher, Christine ; Kosugi, Yoshiko. / Drought and cool temperature cue general flowering synergistically in the aseasonal tropical forests of Southeast Asia. :: Ecological Research. 2019 ; 巻 34, 番号 1. pp. 40-49.
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