10.5061/DRYAD.8J60C45
Kono, Yuri
Kyoto University
Ishida, Atsushi
Kyoto University
Saiki, Shin-Taro
Kyoto University
Yoshimura, Kenichi
Dannoura, Masako
Kyoto University
Yazaki, Kenichi
Forestry and Forest Products Research Institute
Kimura, Fuku
Nihon University
Yoshimura, Jin
Yamagata University
Aikawa, Shin-ichi
Japan Forest Technology Association, Chiyoda, Japan
Data from: Initial hydraulic failure followed by late-stage carbon
starvation leads to drought-induced death in tree, Trema orientalis
Dryad
dataset
2019
phloem transport
Trema orientalis
carbon balance
2019-01-08T17:17:43Z
2019-01-08T17:17:43Z
en
https://doi.org/10.1038/s42003-018-0256-7
10145 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Drought-induced tree death has become a serious problem in global forest
ecosystems. Two nonexclusive hypotheses, hydraulic failure and carbon
starvation, have been proposed to explain tree die-offs. To clarify the
mechanisms, we investigated the physiological processes of drought-induced
tree death in saplings with contrasting Huber values (sapwood area/total
leaf area). First, hydraulic failure and reduced respiration were found in
the initial process of tree decline, and in the last stage carbon
starvation leaded to tree death. The carbohydrate reserves at the stem
bases, low in healthy trees, were accumulated at the beginning of the
declining process because of phloem transport failure, and then decreased
just before dying. The concentrations of non-structural carbohydrates at
the stem bases are a good indicator of tree damage. The physiological
processes and carbon sink-source dynamics that occur during lethal drought
provide important insight into the adaptive measures underlying forest
die-offs under global warming conditions.
RawDataSetRaw data set in from Figures 2, 3 and 4.
Ogasawara Islands in the northern Pacific Ocean in Japan
which are in the northern Pacific Ocean
The Ogasawara (Bonin) Islands in Japan