Activities (Dissertation thesis, scientific papers, etc.)

• Wada, N.: Biotic interactions controlling regenerative successand spatial patterns of plants in cool-temperate mixed forests. (March1995)
• Onimaru, K.: Factors controlling the pattern of sedge fen vegetationin Hokkaido, northern Japan. (March 1996)
• Takahashi, K.: Mechanisms determining coexistence and exclusionbetween two co-dominating species in subalpine forests. (December 1996)
• Aiba, S.: Local-and regional-scale determinants of tree speciesdiversity in rain forests (December 1997)
• Akashi, N.: Spatial pattern of trees and its processes in a temperateforest. (awarded from Kyoto University at March 1998. He is in this lab after D2.)
• Hu, D-Y: Behavioral ecology of the wintering Red-crowned Cranesor Japanese Cranes, Grus japonensis Mueller, at major feeding stationsin eastern Hokkaido, norhtern Japan (March 1998)
• Narita, K.: Life shitory strategy of aerial seed pool of a lignifieddesert annual, Blepharis sindica T. Anders (Acanthaceae) (June 1998)
• Suzuki, S.: Effects of temperature and growing season period on the leaf characteristics and shoot development of plants (March 1999)
• Lee, T. H.: Habitat use, food habits and mating ecology of the Eurasian red squirrel (Sciurus vulgaris L.) (March 1999)
• Taguiam, C.G. Socio-economic and cultural factors influencing the adoption of agroforestry as the farming system in Makiling Forest Reserve, Philippines (March 1999)
• Seino, T.: Shoot growth and dynamic architecture of a deciduous tree, Acanthopanax sciadophylloides (Araliaceae) (March 2000)
• Trabersi, I. Studies on the stabilization of old sanitary landfills (March 2000)
• Nishimura, T.: Mechanisms of boundary formation in boreal forest communities (Sept. 2000)
• Suzuki, M.: Allometry and dynamics of current-year shoot populations in the crown development of deciduous trees (March 2001)
• Kato, E.: Inter-annual and phenological variation of reproductive performance of tree populations in cool-temperate deciduous forest (March, 2002)
• Miyammoto, K.: Convergence and differentiation in tree architecture among co-occurring species in a tropcial heath forest (March, 2002)
• Kasagi, T. Variations in reproductive characteristics and biological interactions between sympatric alpine shrubs, Phyllodoce caerulea and P. aleutica, along snowmelt gradients (Sept. 2002)
• Shimono, Y: Phenotypic variation in germination characteristics and genetic differentiation of Potentilla matsumurae (Rosaceae) between alpine fellfield and snowbed populations (March 2003)
• Rahajoe J.S. The role of litter production and decomposition of dominant tree species on the nutrient cycle in natural forests with various substrate conditions (March 2003)
• Tani, T.: Growth strategy of tall-herbaceous species to the seasonally-fluctuating light environments under cool-temperate deciduous forests. (March 2004)
• Uraguchi, A.: Plastic responses to light in shoot morphology and life history traits for shade-tolerant canopy species of Acer (March 2005)

Publications (after 1994)

• Aiba, S. & Kohyama, T. (1996) Tree species stratificationin relation to allometry and demography in a warm-temperate rain forest. Journal of Ecology 84: 207-218
• Aiba, S. & Kohyama, T. (1997) Crown architecture and life-historytraits of 14 tree species in a warm-temperate rain forest: significanceof spatial heterogeneity. Journal of Ecology 85: 611-624
• Akashi, N. (1996) The spatial pattern and canopy-understory associationof trees in a cool temperate, mixed forest in western Japan. EcologicalResearch 11:311-319
• Akashi, N. (1997) Dispersion pattern and mortality of seeds andseedlings of Fagus crenata Blume in a cool temperate forest in westernJapan. Ecological Research 12:159-165
• Akashi, N., Kohyama, T., & Matsui, K. (2003) Lateral and vertical crown associations in mixed forests. Ecological Research 18: 455-461

• Bellingham, P.J., Kohyama, T. & Aiba, S. (1996) The effectsof a typhoon on Japanese warm temperate rain forests. Ecological Research 11: 229-247

• Haruki, M. & Tsuyuzaki, S. (2001) Woody plant establishment in the early stages of volcanic succession on Mount Usu, northern Japan. Ecological Research 16: 451-457
• Hasegawa, S., Koba, K., Tayasu, I., Takeda, H. & Haga, H. (2003) Carbon autonomy of reproductive shoots of Siberian alder (Alnus hirsuta var. sibirica). Journal of Plant Research 116: 183-188
• Hasegawa, S.F. & Takeda, H. (in press) Current-year shoot based approach for annual variation in the reproductive output in Siberian alder (Alnus hirsuta var. sibirica). Trees
• Hikosaka, K., Nagamatsu, D., Ishii, H.S. & Hirose, T. (2002) Photosynthesis-nitrogen relationships in species at different altitudes on Mount Kinabalu, Malaysia. Ecological Research 17: 305-313
• Hu, D.-Y. (1998) Feeding-station use of wintering Japanese Cranes Grus japonensis in eastern Hokkaido in relation to age and socialstatus. Japanese Journal of Ornithology 46: 163-174

• Ishikawa-Goto, M. & Tsuyuzaki, S. (2004) Methods of estimating seed banks with reference to long-term seed burial. Journal of Plant Research 117: 245-248
• Ishii, H.S. (2004) Increase of male reproductive components with size in an animal-pollinated hermaphrodite, Narthecium asiaticum (Liliaceae). Functional Ecology 18: 130-137
• Ishii, H.S. & Sakai, S. (2002) Temporal variation in floral display size and individual floral sex allocation in racemes of Narthecium aciaticum (Liliaceae). American Journal of Botany 89: 441-446

• Kasagi, T. (2002) Intraspecific variations in selfing ability of two sympatric alpine shrubs, Phyllodoce caerulea and Phyllodoce aleutica, along snowmelt gradients. Plant Species Biology 17: 133-138
• Kasagi, T. & Kudo, G. (2001) Variations in floral traits of sympatric alpine shrubs, Phyllodoce caerulea and Phyllodoce aleutica, along snowmelt gradients. Polar Bioscience 14: 99-109
• Kasagi, T. & Kudo, G. (2003) Variations in bumblebee preference and pollen limitation among neighboring populations: comparisons between Phyllodoce caerulea and Phyllodoce aleutica (Ericaceae) along snowmelt gradients. American Journal of Botany 90: 1321-1327
• Kasagi, T. & Kudo, G. (in press) Interspecific pollinator movements and heterospecific incompatibility: comparisons between Phyllodoce caerulea and Phyllodoce aleutica along snowmelt gradients. Evolutionary Ecology Research
• Kato, E. & Hiura, T. (1999) Fruit set in Styrax obassia (Styracaceae): the effect of light availability, display size, and localfloral density. American Journal of Botany 86: 495-501
• Kimura, T., Ishii, H.S. & Sakai, S. (2002) Selfed-seed production depending on individual size and flowering sequence in Iris gracilipes (Iridaceae). Canadian Journal of Botany 80:1096-1102
• Kondo, T. & Tsuyuzaki, S. (1999) Natural regeneration patterns of an introduced Larix kaempferi on the volcano Mt Koma, northern Japan. Diversity and Distributions 5: 223-233

• Lee, T.H. (2000) Behaviour and body weight fluctuations of the Eurasian Red Squirrel (Sciurus vulgaris) in the mating season. Canadian Field Naturalist 114: 495-497
• Lee, T.H. (2001) Mating behavior of the Eurasian red squirrel (Sciurus vulgaris Linnaeus, 1758) in Hokkaido, Japan. Mammalia 65: 131-142
• Lee, T.H. & Fukuda, H. (1999) The distribution and habitat use of the Eurasian red squirrel Sciurus vulgaris L. during summer, in Nopporo Forest Park, Hokkaido. Mammal Study 24: 7-15

• Mirmanto, E., Tsuyuzaki, S. & Kohyama, T. (2003) Investigation of the effects of distance from river and peat depth on tropical wetland forest communities. Tropics 12: 287-294
• Miyamoto, K., Suzuki, E., Kohyama, T., Seino, T., Mirmanto, E. & Simbolon, H. (2003) Habitat differentiation among tree species with small-scale variation of humus depth and topography in a tropical heath forest of Central Kalimantan, Indonesia. Journal of Tropical Ecology 19: 1-13

• Nakashizuka, T. & Kohyama, T. (1995) The significance ofthe asymmetric effect of crowding for coexistence in a mixed temperateforest. Journal of Vegetation Science 6: 509-516
• Narita, K. (1998) Effects of seed release timing on plant life-history and seed production in a population of a desert annual, Blepharis sindica(Acanthaceae). Plant Ecology 136: 195-204
• Narita, K., Mertia, R.S., Kumar, S., Ichikawa, S. & Furukawa,A. (1997) Effect of different grazing intensities of sheep on aridand semiarid grasslands in the Thar desert, India. Tropics 7: 105-114
• Narita, K. & Wada, N. (1998) Ecological significance of theaerial seed pool of a lignified annual, Blepharis sindica (Acanthaceae). Plant Ecology 135: 177-184
• Nishi, H. & Tsuyuzaki, S. Seed dispersal and seedling establishment of Rhus trichocarpa promoted by a crow (Corvus macrorhynchos) on a volcano in Japan. Ecography 27: 311-322
• Nishimura, T.B. & Kohyama, T. (2002) Formation and maintenance of community boundaries in a sub-alpine forest landscape in norhtern Japan. Journal of Vegetation Science 13: 555-564
• Nishimura, T.B. & Suzuki, E. (2000) Spatial distributions of ginger species at tropical submontane forest floor. Tropics 9: 103-116
• Nishimura, T.B. & Suzuki, E. (2001) Allometric differentiation among tropical tree seedlings in heath and peat-swamp forests. Journal of Tropical Ecology 17: 667-681
• Norby, R.J., Ogle, K., Curtis. P.S., Badeck, F.-W., Huth , A., Hurtt, G.C., Kohyama, T., & Penuelas, J. (2001) Aboveground growth and competition in forest gap models: an analysis for studies of climatic change. Climatic Change 51: 415-447

• Onimaru, K. & Yabe, K. (1996) Comparison of nutrient recoveryand specific leaf area variation of Carex lasiocarpa var. occultans and Carex thunbergii var. appendiculata with reference tonutrient conditions and shading by Phragmites australis. EcologicalResearch 11: 139-147

• Rahajoe, J.S. & Kohyama, T. (2003) Effects of forest fire on leaf litter decomposition of two dominant species (Tristaniopsis obovata and Calophyllum pulcherrimum) in a heath forest of south Kalimantan. Tropics 12: 277-286
• Rahajoe, J.S. & Kohyama, T. (2003) The relationship between N,P returned via litter production and nutrient use efficiency of heath and peat swamp forests in Central Kalimantan. Tropics 13: 1-8

• Seino, T. (1998) Intermittent shoot growth in saplings of Acanthopanax sciadophylloides (Araliaceae). Annals of Botany 81: 535-543
• Seino, T. (2001) Differences in architecture and shoot growth during stagnant and extension growth phases of Acanthopanax sciadophylliodes (Araliaceae). Annals of Botany 87: 347-354
• Shimono, Y. & Kudo, G. (2003) Intraspecific variation in seedling emergence and survival of Potentilla matsumurae (Rosaceae) between alpine fellfield and snowbed habitats. Annals of Botany 91: 21-29
• Shimono Y. & Kudo G. (2005) Comparisons of germination traits of alpine plants between fellfield and snowbed conditions. Ecological Research 20: 189-197.
• Shiraki, S. (1994) Characteristic of White-tailed Sea Eagle nestsites in Hokkaido, Japan. Condor 94: 1003-1008.
• Suzuki, M. & Hiura, T. (2000) Allometric differences between current-year shoots and large branches of deciduous broad-leaved tree species. Tree Physiology 20: 203-210
• Suzuki, S. (1998) Leaf phenology, seasonal changes in leaf qualityand herbivory pattern of Sanguisorba tenuifolia at different altitudes. Oecologia 117: 169-176
• Suzuki, S. & Kudo, G. (1997) Short-term effects of simulatedenvironmental change on phenology, leaf traits, and shoot growth of alpineplants in a temperate mountain, northern Japan. Global Change Biology 3: 108-115
• Suzuki S. & Kudo G. (2000) Responses of alpine shrubs to simulated environmental change during three years on a temperate mountain, northern Japan. Ecography 25: 553-564

• Taguiam, C.G. (2000) Agroforestry in Makiling Forest Reserve. Grassland Society of the Phillipines Journal 4: 52-59
• Taguiam, C.G. (2000) Migration and settlement in Makiling Forest Reserve. Grassland Society of the Phillipines Journal 4: 99-108
• Taguiam, C.G. & Tsuyuzaki, S. (1998) Agroforestry as a farming system in Bangong Silang, Makiling Forest Reserve, Philippines. Tropics 7: 269-282
• Takahashi, K. (1994) Effect of size structure, forest floor typeand disturbance regime on tree species composition in a coniferous forestin Japan. Journal of Ecology 83: 769-773
• Takahashi, K. (1996) Plastic response of crown architecture tocrowding in understory trees of two co-dominating conifers. Annals ofBotany 77: 159-164
• Takahashi, K. (1997) Regeneration and coexistence of two subalpineconifer species in relation to dwarf bamboo in the understory. Journalof Vegetation Science 8: 529-536
• Takahashi, K. & Kohyama, T. (1997) Crown architecture oftwo understory palm species of the genus Licuala in a tropical rainforest. Plant Sepcies Biology 12: 35-41
• Takahashi, K. & Kohyama, T. (1999) Size-structure dynamics of two conifers in relation to understorey dwarf bamboo: a simulation study. Journal of Vegetation Science 10: 833-842
• Takahashi, K., Seino, T. & Kohyama, T. (2001) Responses to canopy openings in architectural development of saplings in eight deciduous broad-leaved tree species. Canadian Journal of Forest Research> 31: 1336-1347
• Takenaka, A., Takahashi, K. & Kohyama, T. (2001) Optimal leaf display and biomass partitioning for efficient light capture in an understorey palm, Licuala arbuscula. Functional Ecology 15: 660-668
• Tamura, S. & Hiura, T. (1998) Proximate factors affectingfruit set and seed mass of Styrax obassia in a masting year. EcoScience 5: 100-107
• Tamura S. & Kudo G. (2000) Wind pollination and insect pollination of two temperate willow species, Salix miyabeana and Salix sachalinensis. Plant Ecology 147: 185-192
• Tani, T. & Kudo, G. (2003) Storage ability of overwintering leaves and rhizomes in a semi-evergreen fern, Dryopteris crassirhizoma (Dryopteridaceae). Ecological Research 18:15-24
• Titus, J.H. & Tsuyuzaki, S. (1998) Ski slope vegetation atSnoqualmie Pass, Washington State, USA, and a comparison of ski slope vegetationin temperate coniferous forest zones. Ecological Research 13: 97-104
• Titus, J.H. & Tsuyuzaki, S. (1999) Ski slope vegetation of Mount Hood, Oregon, U.S.A. Arctic, Antarctic, and Alpine Research 31: 319-328
• Titus, J.H. & Tsuyuzaki, S. (2002) Arbuscular mycorrhizal distribution in relation to microsites on recent volcanic substrates of Mt. Koma, Hokkaido, Japan. Mycorrhiza 12: 271-275
• Titus, J.H. & Tsuyuzaki, S. (2003) Influence of a non-native invasive tree on primary succession at Mt. Koma, Hokkaido, Japan. Plant Ecology 169: 307-315
• Titus, J.H. & Tsuyuzaki, S. (2003) Distribution of plants in relation to microsites on recent volcanic substrates on Mount Koma, Hokkaido, Japan. Ecological Research 18: 91-98
• Tu, M., Titus, J.H., Tsuyuzaki, S. & del Moral, R. (1998) Compositionand dynamics of wetland seed bank on Mount St. Helens, Washington, USA. Folia Geobotanica 33: 3-16

• Uesaka, S. & Tsuyuzaki, S. (2004) Differential establishment and survival of species in deciduous and evergreen shrub patches and on bare ground, Mt. Koma, Hokkaido, Japan. Plant Ecology 175: 165-177
• Uraguchi A. & Kubo T. (2005) Responses to light in individual growth and reproduction of two Acer species and the long-term consequences. Ecological Research 20: 177-187
• Ushimaru, A., Itagaki, T. & Ishii, H.S. (2003) Variation in floral organ size is dependent on function: a test with Commelina communis, an andromonoecious species. Evolutionary Ecology Research 5: 615-622
• Ushimaru, A., Itagaki, T. & Ishii, H.S. (2003) Floral correlations in an andromonoecious, Commelina communis (Commelinaceae). Plant Species Biology 18: 103-106

• Wada N., Kudo G. & Kojima S. (1998) Gender variation of Dryas octopetala along snowmelt and latitudinal gradients in the Subarctic and the High Arctic. Polar Bioscience 12: 87-99
• Wada, N., Narita, K., Kumar, S. & Furukawa, A. (1995) Impactof overgrazing on seed predation by rodwnts in the Thar desert, northwesternIndia. Ecological Research 10: 217-221
• Wada, N. & Uemura, S. (1994) Seed dispersal and predationby small rodents on the herbaceous understory plant Symplocarpus renifolius. American Midland Naturalist 132 :320-327