Fluctuation in size and weight of acorns and in the amount of acorn production with Quercus variabilis blume
2000
Hiroki, S. (Nagoya Univ. (Japan))
Fluctuation of acorn production by Quercus variabilis was investigated in five trees for five years from 1975 to 1979 (group A) and two others for three years from 1998 to 2000 (group B) in the campus of Nagoya University, Aichi Prefecture, Japan. All fallen acorns were collected every day from early September to the middle of October. All investigated individuals showed large variation in acorn production, but seemed not to show any particular synchronization in either group. In group B, the sizes of acorn were measured and wet and dry weights were determined to give an estimate of acorn mass. The results showed that the total dry weight produced fluctuated approximately in paralleld with the number of acorns.
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