Key points are not available for this paper at this time.
B. A. Hutchison, D. R. Matt, R. T. McMillen, L. J. Gross, S. J. Tajchman, J. M. Norman, The Architecture of a Deciduous Forest Canopy in Eastern Tennessee, U.S.A., Journal of Ecology, Vol. 74, No. 3 (Sep., 1986), pp. 635-646
Hutchison et al. (1986) studied this question.