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Comparison of growth habits under various light conditions between two climax species, Castanopsis sieboldii and Castanopsis cuspidata , with special reference to their shade tolerance
Author(s) -
Hiroki Shozo,
Ichino Kazuo
Publication year - 1998
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1046/j.1440-1703.1998.00243.x
Subject(s) - climax , biology , temperate climate , light intensity , botany , horticulture , ecology , physics , optics
Two experiments were conducted to examine the difference in shade tolerance between two climax species, Castanopsis sieboldii and Castanopsis cuspidata , in Aichi Prefecture in the warm‐temperate climate of Japan. In the growth experiment, the seedlings of the two species were raised under five light conditions, 100%, 30%, 10%, 3% and 1% relative light intensity (RLI). The growth of C. sieboldii highly exceeded that of C. cuspidata , particularly under higher light conditions. In the heavy shading experiment, the seedlings of the two species were grown under three light conditions (0, 0.15 and 0.3% RLI). While all seedlings of C. sieboldii died within 2 years under 0.15 and 0.3% RLI, about half of the seedlings of C. cuspidata survived more than 2 years under 0.15% RLI, and about 70% survived more than 4 years under 0.3% RLI. It was concluded that C. cuspidata was more shade tolerant than C. sieboldii , and the possibility that C. sieboldii might be more tolerant of the drought stress than C. cuspidata was discussed.