DIVISION OF FOREST ECOSYSTEM


In this division, which affiliates three forest research stations and three experimental stations, field-based educational and research activities in diverse areas of the forest ecosystem have been conducted. These activities include comprehensive researches from viewpoints of forest ecology, silviculture, forest management and biogeochemistry, in order to made qualitative and sociological evaluations of ecosystem services and multifunction of the forest ecosystem. As activities on the connectivity of hills, humans and oceans, biological and material relations between forest and aquatic ecosystems have been studied.

LABORATORY OF SILVICULTURE

Targets of the laboratory are the ecosystem function of forest and stream using nutrient cycling, and plant population dynamics to establish a sustainable forest management system, by which we can enjoy the diverse forest ecosystem services in balance. We also conduct technical studies such as deer damage management, silviculture in plantation, and timber utilization based on the ecosystem information. This laboratory educates graduate school students in the Graduate School of Agriculture.

■Professor
TOKUCHI, Naoko, D.Agr. (Kyoto Univ.), Forest Ecosystem Ecology, Nitrogen Dynamics
E-mail : tokuchi _at_ kais.kyoto-u.ac.jp

* Purwanto, R. H. ; Tokuchi, N. “Production and seasonal patterns of leaf litter in moist deciduous forests in eastern Java, Indonesia.” Tropics. 2005, 14, p.371-376.
* Hobara, S. ; Koba, K. ; Osono, T. ; Tokuchi, N. ; Ishida, A. ; Kameda, K. “Nitrogen and phosphorus enrichment and balance in forests colonized by cormorants: Implications of the influence of soil absorption.” Plant and Soil. 2005, 268, p.89-101.
* Tokuchi, N. ; Ohte, N. ; Hobara, S. ; Kim, S. ; Katsuyama, M. “Changes in biogeochemical cycling following forest defoliation by pine wilt disease in Kiryu experimental catchment in Japan.” Hydrological Processes. 2004, 18, p.2727-2736.

■Associate Professor
HASEGAWA, Hisashi, D.Agr. (Kyoto Univ.), Forestry/forest engineering
E-mail : hase_at_kais.kyoto-u.ac.jp

* Hasegawa, H. ; Yoshimura, T. “Application of dual-frequency receivers to static surveying under tree canopies.” Journal of Forest Research. 2003, 8(2), p.103-110.
* Tachiki. Y. ; Yoshimura, T. ; Hasegawa, H. ; Mita, T. ; Sakai, T. ; Nakamura, F. “Effects of polyline simplication of dynamic GPS data under forest canopy on area and perimeter estimations.” Journal of Forest Research. 2005, 10(6), p.419-427.
* Hasegawa, H. ; Yoshimura, T. “Positional accuracy and error management of static surveying using dual-frequency GPS receivers under different forest conditions.” Journal of Forest Research. 2007, 12(1), p.1-7.

■Associate Professor
ISE, Takeshi, Ph.D. in Biology (Harvard Univ.), Simulating terrestrial ecosystems, carbon cycling
E-mail : ise_at_kais.kyoto-u.ac.jp

* Ise, T.; Litton, C.M.; Giardina, C.P.; Ito, A. “Comparison of modeling approaches for carbon partitioning: Impact on estimates of global net primary production and equilibrium biomass of woody vegetation from MODIS GPP.” Journal of Geophysical Research-Biogeosciences. 2010, p.115(G04025, doi:10.1029/2010JG001326)
* Ise, T. ; Dunn, A.L.; Wofsy, S.C.; Moorcroft, P.R. “High sensitivity of peat decomposition to climate change through water-table feedback.” Nature Geoscience. 2008, 1, p.763-766.
* Ise, T. ; Moorcroft, P.R. “The global-scale temperature and moisture dependencies of soil organic carbon decomposition: an analysis using a mechanistic decomposition model.” Biogeochemistry. 2006, 80, p.217-231.

■Associate Professor
ISHIHARA, Masae, D.Agr. (KyotoUniv.), Plant Ecology, Biodiversity, Forest Ecology, Ecosystem Services
E-mail : ishihara.masae.8w_at_kyoto-u.ac.jp

* Ishihara MI, Utsugi H, Tanouchi H, Aiba M, Kurokawa H, Onoda Y, Nagano M, Umehara T, Ando M, Miyata R, Hiura, T. (2015) Efficacy of generic allometric equations for estimating biomass: a test in Japanese natural forests. Ecological Applications, 25: 1433-1446.
* Ishihara MI, Suzuki SN, Nakamura M, Enoki T, Fujiwara A, Hiura T, Homma K, Hoshino D, Hoshizaki K, Ida H, Ishida K, Itoh A, Kaneko T, Kubota K, Kuraji K, Kuramoto S, Makita A, Masaki T, Namikawa K, Niiyama K, Noguchi M, Nomiya H, Ohkubo T, Saito S, Sakai T, Sakimoto M, Sakio H, Shibano H, Sugita H, Suzuki M, Takashima A, Tanaka N, Tashiro N, Tokuchi N, Yoshida T, and Yoshida Y. (2011). Forest stand structure composition and dynamics in 34 sites over Japan. Ecological Research 26: 1007–1008.
* Ishihara MI and Kikuzawa K. (2009). Annual and spatial variation in shoot demography associated with masting in Betula grossa: comparison between mature trees and saplings. Annals of Botany 104: 1195–1205.

■Program-Specific Assistant Professor
NAKAGAWA, Hikaru, D.Sc. (Kyoto Univ.), Stream ecology, Community ecology, Stream fish, Aquatic insect, Food web
E-mail : nakagawa.hikaru.4x_at_kyoto-u.ac.jp

* Nakagawa, H. ; Takemon, Y. “Length-mass relationships of macroinvertebrates in a freshwater stream in Japan.” Aquatic Insects. 2014, 36, p.53–62.
* Nakagawa, H. “Contribution of environmental and spatial factors to the structure of stream fish assemblages at different spatial scales.” Ecology of Freshwater Fish. 2014, 23, p.208–223.
* Nakagawa, H. ; Yamane, H. ; Yasugi, M. ; Fujita, T. ; Yokoi, K. ; Ashiwa, H. ; Kitada, N. ; Takano, H. ; Suzuki, N. ; Kishimoto, J. ; Maeda, H. ; Yamano, H. ; Ito, T. ; Maruyama, H. ; Tominaga, K. ; Hatakeyama, E. ; Goto, M. ; Takahashi, D. “Diel changes in resource use and diet overlap in temperate stream fishes.” Ecological Research. 2012, 27, p.417–426.

LABORATORY OF FOREST INFORMATION

Targets of the laboratory are the elucidation of the variability of materials exported from the forest, and the effect of human impact to the forest, such as logging, on the material cycling in the vegetation, soil and watershed, in order to clarify the connectivity between forest and water system. Appropriate method managing the forest resources is also investigated through analyses of the distribution-consumption system of forest products. Based on these researches, we have been analyzing changes in the forested watershed ecosystem under the global and sociological environmental changes. Social surveys of the people’s perception on the forest environment have been conducted to optimize the forest use and management. This laboratory educates graduate school students in the Graduate School of Agriculture.

■Professor
YOSHIOKA,Takahito, D.Sc. (Nagoya Univ.), Biogeochemistry
E-mail : yoshioka _at_ kais.kyoto-u.ac.jp

* Mostofa, K. M. G.; Liu, C.-Q.; Zhai, W.-D.; Minella, M.; Vione, D.; Gao, K.; Minakata, D.; Arakaki, T.; Yoshioka, T.; Hayakawa, K.; Konohira, E.; Tanoue, E.; Akhand, A.; Chanda, A.; Wang, B.; Sakugawa, H. Reviews and Syntheses: Ocean acidification and its potential impacts on marine ecosystems. Biogeosciences, 2016, 13, p.1767–1786.
* Matsuyama, S.; Fukushima, K.; Shirasawa, H.; Mukai, M.; Hirai, T.; Sakai, S.; Ishihara, M.; Iwai, Y.; Yagi, Y.; Guo, S.; Tateiwa, S.; Hasegawa, H.; Yoshioka, T. Direct and indirect effects of thinning and deer exclosure on stem growth in Cryptomeria japonica – a case in Japanese cedar plantation with delayed thinning in Ashiu-. Forest Research, 2016, 79, p.1-9 (in Japanese with English abstract).
* Matsuyama, S.; Guo, S.; Tateiwa, S.; Shirasawa, H.; Yoshioka, T. Change of vegetation inside and outside deer exclosure and temporal opening of the exclosure at a grassland in Japan. Forest Research, 2016, 79, p.11-20 (in Japanese with English abstract).

■Associate Professor
TATENO, Ryunosuke, D.Agr. (Kyoto Univ.), Forest Ecology (Nutrient cycling, Plant N use, Carbon allocation, Gene flow etc)
E-mail : rtateno _at_ kais.kyoto-u.ac.jp

* Tateno, R. ; Hishi, T ; Takeda, H. “Above- and belowground biomass and net primary production in a cool-temperate deciduous forest in relation to topographical changes in soil nitrogen.” Forest Ecology and Management. 2004, 193, p.297-306.
* Tateno, R. ; Tokuchi, N. ; Yamanaka, N. ; Du, S. ; Otsuki, K. ; Shimamura, T. ; Xue, Z. ; Wang, S. ; Hou, Q. “Comparison of litterfall production and leaf litter decomposition between an exotic black locust plantation and an indigenous oak forest near Yan’an on the Loess Plateau, China.” Forest Ecology and Management. 2007, 241, p.84-90.
* Tateno, R. ; Takeda, H. “Nitrogen uptake and nitrogen use efficiency above and below ground along a topographic gradient of soil nitrogen availability.” Oecologia. 2010, 163, p.793-804.

■Junior associate professor
NAKASHIMA, Tadashi, D.Agr. (Kyoto Univ.), Forest Conservation and Natural Disasters in Mountain Regions
E-mail : tnakashi _at_ kais.kyoto-u.ac.jp

* Nakashima, T. ; Takei, A. “Experimental study on the motion of coarse material debris low.” International Congress Interpraevent 1992 in Bern. 1992, vol.2, p.285-296.
* Nakashima, T. ; Kawanabe, S. “Damage to the Forests in the Western Part of Japan Caused by Typhoon No.19 in 1991.” Proc.XX IUFRO World Congress. 1995, Finland, p.195-207.
* Nakashima, T. “What forest gives river -Transported debris in a natural forest watershed -The relation of forest, “sato” and sea.” The Field Science Education and Research Center, Kyoto University edited, Kyoto University Museum. 2004, Tokyo, p.110-111.

■Junior associate professor
KOBAYASHI, Kazuya, D.Agr.(Hokkaido Univ.), Evolutionary Ecology
E-mail : kobayashi.kazuya.3w _at_ kyoto-u.ac.jp

* Kazuya Kobayashi, Eisuke Hasegawa & Kyohsuke Ohkawara. Clonal reproduction by males in the ant Vollenhovia emeryi (Wheeler). Entomological Science. 11: 167-172. 2008.
* Kazuya Kobayashi, Eisuke Hasegawa, Yuuka Yamamoto, Kazutaka Kawatsu, Edward L. Vargo, Jin Yoshimura & Kenji Matsuura. Sex ratio biases in termites provide evidence for kin selection. Nature Communications. 4: 2048. 2013.
* Kazuya Kobayashi & Eisuke Hasegawa. A female-biased sex ratio reduces the twofold cost of sex. Scientific reports. 6: 23982. 2016.

■Assistant Professor
SAKIMOTO, Michinori, D.Agr.(Kyoto Univ.), Forest Ecology;Tree Behavior Ecology and Eco-morphology
E-mail : sakimoto _at_ kais.kyoto-u.ac.jp

* Sakimoto, M. “Plastic architecture and allometry of Abies sachalinensis saplings in a northern conifer-hardwood forest.” Bull. Kyoto Univ. Forests. 1996, 68, p.1-8.
* Sakimoto, M. ; Hirayama, K. “Morphology, structure and dynamics of modules of Cryptomeria japonica saplings in closed canopy and in canopy gaps.” Forest Research. 2002, Kyoto74, p.53-59.
* Hirayama, K. ; Sakimoto, M. “Regeneration of Cryptomeria japonicaon a sloping topography in a cool-temperate mixed forest in the snowy region of Japan.” Canadian Journal of Forest Research. 2003, 33, p.543-551.

■Assistant Professor
SAKANOUE, Nao, D.Agr. (Kyoto Univ.), Distribution System of Forest Productions
E-mail : nao _at_ kais.kyoto-u.ac.jp

* Sakanoue, N. “Laminated lumber and Improved Wooden Constructions: Japanese Housing Constructors’ Choice of Materials.” Journal of Forest Economics. 1998, 44(1), p.69-74.
* Sakanoue, N. “Sugi timber as the parts of wood construction. The New Marketing Strategy of Sugi Timber I.” (Ed. Endo, K.) Nihon Ringyo Chousakai, Tokyo. 2000, p.118-140.
* Sakanoue, N. “Qualitative Changes of the Needs for Wood Used in Housing.” Forest Economy. 2001, 54(7), p.1-14.

■Assistant Professor
NAKANISHI, Asami, M. Agr. (Kyoto Univ.), Forest Ecology, Nitrogen Cycling
E-mail : asa_at_kais.kyoto-u.ac.jp

* Nakanishi, A.; Inagaki, Y.; Osawa, N.; Shibata, S.; Hirata, K. “Effects of patch cutting on leaf nitrogen nutrition in hinoki cypress (Chamaecyparis obtusa Endlicher) at different elevations along a slope in Japan.” Journal of Forest Research. 2009, 14, P.388-393
* Inagaki, Y.; Nakanishi, A.; Fukata, H. “Soil properties and nitrogen utilization of hinoki cypress as affected by strong thinning under different climatic conditions in the Shikoku and Kinki districts in Japan.” Journal of Forest Research. 2011, 16, P.405-413
* Nakanishi, A.; Inagaki, Y.; Shibata, S.; Osawa, N. “Effects of group cutting on litterfall and organic horizon in a suburban secondary forest dominated by hinoki cypress (Chamaecyparis obtusa Endlicher) in Kyoto, Japan.” (in Japanese with English summary) Applied Forest Science. 2015, 24(2), P.1-9