Mitsue Shibata, Hiroshi Tanaka, Shigeo Iida, Shin Abe, Takashi Masaki, Kaoru Niiyama, and Tohru Nakashizuka. 2002. Synchronized annual seed production by 16 principal tree species in a temperate deciduous forest, Japan. Ecology 83:1727-1742.

	ACM	ACA	KAP	BTG	CRC	CRJ	CRL	CRT	OSJ	SWC	STO	FGC	FGJ	QRC	QRS	CSC
ACM
ACA	0.76***
KAP	0.47	0.51
BTG	0.39	0.42	0.47
CRC	0.55*	0.68*	0.74**	0.37
CRJ	0.43	0.68*	0.52	0.24	0.77**
CRL	0.43	0.68*	0.52	0.24	0.77**	1.00***
CRT	0.44	0.59*	0.80***	0.38	0.95***	0.70**	0.70**
OSJ	0.48	0.69**	0.69**	0.31	0.90***	0.83***	0.83***	0.88***
SWC	0.54*	0.74**	0.36	0.31	0.65*	0.86***	0.86***	0.53	0.63*
STO	0.46	0.49	0.67*	0.34	0.78**	0.66*	0.66*	0.84***	0.72**	0.58*
FGC	0.33	0.36	-0.03	0.33	0.18	0.11	0.11	0.10	0.07	0.33	0.03
FGJ	0.52	0.53	0.45	0.13	0.72*	0.47	0.47	0.68*	0.63*	0.36	0.64*	0.27
QRC	-0.11	-0.20	-0.24	0.06	-0.09	-0.41	-0.41	-0.03	-0.14	-0.38	0.00	0.10	0.20
QRS	0.06	-0.14	0.06	-0.11	0.00	-0.24	-0.24	0.09	-0.03	-0.25	0.17	-0.20	0.13	0.57*
CSC	-0.38	-0.35	0.18	-0.15	- 0.13	-0.29	-0.29	-0.03	-0.18	-0.35	-0.15	-0.20	-0.34	0.09	0.26

   Notes: Species abbreviations are as follows: ACM, Acer mono; ACA, Acer amoenum; KAP, Kalopanax pictus; BTG, Betula grossa; CRC, Carpinus cordata; CRJ, Carpinus japonica; CRL, Carpinus laxiflora; CRT, Carpinus tschonoskii; OSJ, Ostrya japonica; SWC, Swida controversa; STO, Stryax obassia; FGC, Fagus crenata; FGJ, Fagus japonica; QRC, Quercus crispula; QRS, Quercus serrata; and CSC, Castanea crenata.
* P < 0.05, ** P < 0.01, *** P < 0.001