TY - JOUR
T1 - Climate influences the effect of fungal decay type on regeneration of picea jezoensis var. Hondoensis seedlings on decaying logs
AU - Fukasawa, Yu
AU - Ando, Yoko
AU - Suzuki, Satoshi N.
AU - Aizawa, Mineaki
AU - Sakuma, Daisuke
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Hondo spruce (Picea jezoensis var. hondoensis (Mayr) Rehder)) is separately distributed among several mountainous regions in central Japan as remnant populations of the last glacial period. To identify factors that affect Hondo spruce seedling regeneration on decaying logs, we investigated the relationships between climatic conditions, log properties, including decay type by fungi, and Hondo spruce seedling density on logs using data from seven subalpine Hondo spruce forests in central Japan. The results showed that the presence of soft rot was associated with higher seedling density, and the effect of brown rot in sapwood and white rot in heartwood on the predicted number of spruce seedlings on logs switched from positive to negative with increasing temperature and precipitation. Because soft rot occurs under humid conditions, the use of forest management techniques that increase the number of logs with soft rot in sapwood (e.g., by keeping the forest floor moist) are recommended for the sustainable regeneration of Hondo spruce. However, the relationships between wood decay type and seedling regeneration can also be affected by climate condition and thus are more complex than previously thought.
AB - Hondo spruce (Picea jezoensis var. hondoensis (Mayr) Rehder)) is separately distributed among several mountainous regions in central Japan as remnant populations of the last glacial period. To identify factors that affect Hondo spruce seedling regeneration on decaying logs, we investigated the relationships between climatic conditions, log properties, including decay type by fungi, and Hondo spruce seedling density on logs using data from seven subalpine Hondo spruce forests in central Japan. The results showed that the presence of soft rot was associated with higher seedling density, and the effect of brown rot in sapwood and white rot in heartwood on the predicted number of spruce seedlings on logs switched from positive to negative with increasing temperature and precipitation. Because soft rot occurs under humid conditions, the use of forest management techniques that increase the number of logs with soft rot in sapwood (e.g., by keeping the forest floor moist) are recommended for the sustainable regeneration of Hondo spruce. However, the relationships between wood decay type and seedling regeneration can also be affected by climate condition and thus are more complex than previously thought.
KW - Coarse woody material
KW - Decay type
KW - Forest regeneration
KW - Precipitation
KW - Subalpine forest
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U2 - 10.1139/cjfr-2019-0147
DO - 10.1139/cjfr-2019-0147
M3 - Article
AN - SCOPUS:85077495348
VL - 50
SP - 73
EP - 79
JO - Canadian Journal of Forest Research
JF - Canadian Journal of Forest Research
SN - 0045-5067
IS - 1
ER -