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Please refer to the contents of our research activities &ref(): File not found: "Koike-Eng.pdf" at page "Koike Takayoshi";
Most of our research activities are carried out in Hokkaido University Forests &ref(): File not found: "HUF brief08.pdf" at page "Koike Takayoshi";
We have been making cooperative research based on a bilateral agreement as follows;
(1) Koike, T. (1987) Photosynthesis and expansion in leaves of the early, mid, and late successional tree species, birch, ash and maple. Photosynthetica 21:503-508.
(2) Koike, T. (1988) Leaf structure and photosynthetic performance as related to the forest succession of deciduous broad-leaved trees. Plant Species Biol., 3:77-87.
(3) Koike, T.(1990) Autumn coloring, photosynthetic performance and leaf development of deciduous broad-leaved trees in relation to forest succession. Tree Physiol., 7:21-32.
(4) Koike, T. (1995) Effects of CO2 in interaction with temperature and soil fertility on the foliar phenology of alder, birch, and maple seedlings. Can. J. Bot., 73 :149-157.
(5) Rousi, M., Mattson, W.J., Tahvanainen, J., Koike, T., and Uotila, I. (1996) Growth and hare resistance of birches: testing defense theories. Oikos 77:20-30.
(6) Koike, T., Tabuchi, R., Mori. S., Takahashi, K.. and Lei, T.T. (1998) Characteristics of the light response in seedlings and saplings of two mid successional species, ash and kalopanax, during the early stage of regeneration in a mature forest. J. Sustanable For., 6: 73-84
(7) Kitao, M., Lei, T.T., Koike, T., Tobita, H. and Maruyama, Y. (2000) Susceptibility to photoinhibition of three deciduous broadleaf tree species with different successional traits raised under various light regimes. Plant Cell Environ., 23: 81-89.
(8) Koike, T., Kitao, M., Maruyama, Y., Mori, S., and Lei, T.T. (2001) Leaf morphology and photosynthetic adjustments among deciduous broad-leaved trees within the vertical canopy profile. Tree Physiol., 21: 951-958.
(9) Kitaoka, S. and Koike, T. (2004) Invasion of broadleaf tree species into a larch plantation: Seasonal light environment, photosynthesis, and nitrogen allocation．Physiol. Plant., 121: 604-611.
(10) Koike, T. et al. (2006) Defense characteristics of seral deciduous broad-leaved tree seedlings grown under differing levels of CO2 and nitrogen. Population Ecology 48: 23-29.
(11) Koike, T. (2009) A trial of revegetation practices with larch species under changing environment. Landscape and Ecological Engineering 5: 97-98 (-167). LEE Special issure
(1) Koike, T. (1995) Vegetation Science in Forestry: Global Perspective based on Forest Ecosystems of East & Southeast Asia. E.O. Box et al. eds., “Physiological ecology of the growth characteristics of Japanese mountain birch in northern Japan: a comparison with Japanese mountain white birch”, Kluwer Academic Publishers, The Netherlands, 409-422.
(2) Reich, P.B., Koike, T, Gower, S.T. and Schoetlle, A (1995) Ecophysiology of coniferous forests. W.K. Smith and T.M. Hinkley eds. “Causes and consequences of variation in conifer leaf life-span”, Academic Press, San Diego, 225-254.
(3) Schulze, E-D., Bazzaz, F.A., Nadelhoffer, K., Koike, T. and Takatsuki, S. (1996) SCOPE Series. Functional roles of biodiversity: A global perspective. Mooney, H.A., Cushman, J.H., Medina, E., eds. “Biodiversity and ecosystem function of temperate deciduous broad-leaved forests” Jone Wiler & Sons, Chichester, New York, Shingapore,. 71-98.
(4) Koike, T. (2004) Autumn coloration, carbon acquisition, and leaf senescence. Eds: L.D. Nooden: Plant Cell Death Processes. Elsevier-Academic Press. Amsterdam, San Diego. 245-258.
(5) Koike, T., Kitaoka, S., Ichie, T., Lei, T.T. and Kitao, M. (2004) Photosynthetic characteristics of mixed broadleaf forests from leaf to stand. In: Shiomi, M. and Kawahata, H. eds. Global Environmental Change in the Ocean and on land. TerraPub?, Tokyo 453-472.
(6) Yazaki, K., Maruyama, Y., Mori, S., Koike, T. and Funada, R. (2005) Effects of elevated carbon dioxide concentration on wood structure and formation in trees, Plant responses to air pollution and global change. (eds. Omasa, K. Nouchi, I. De Kok, L J.), Springer Tokyo, pp 89-97.
(7) Koike, T., Matsuki, S., Tobita, H., Shibata, t., Kitao, m., Qu. L.Y., Choi, D.S., Konno, K., ns Maruyama, Y. (2006) “Defense characteristics of seedlings of Betula platyphylla var. japonica grown under different levels of CO2 and soil fertility” In：Tree Sap III, Terazawa, M. ed. Hokkaido University Press, Sapporo, 133-140.
(8) Koike, T. et al. (2010) Photosynthetic characteristics of trees and shrubs grown at north- and south-facing slopes in central Siberia. Permafrost Ecosystem, (eds. A. Osawa et al.), Springer-V. 273-288, Others 5 chapters. (Seasonal changes in stem radial growth of Larix gmelinii in central Siberia in relation to its climate responses, Characteristics of larch forests in Daxingan Mountains, Northeast China. Carbondynamics of larch plantations in northeastern China and Japan, The role of ectomycorrhiza in boreal forest ecosystem, Effects of elevated CO2 on ecophysiological responses of larch species native to Northeast Eurasia.)
(9) Koike, T. (2012) Silviculture and Forest ecology in a changing environment. In: Agricultural Sciences for Human Sustainability, Kaiseisha, Ohtsu, 121-122.
