Preliminary Report on unnoticed establishment of Pheidole parva Mayr Complex (Insecta: Hymenoptera: Formicidae: Myrmicinae) in the Ogasawara Islands: A potential risk to native ground-dwelling invertebrates
Yamamoto, A., Matsumoto, T., Kobayashi, H., Osawa, T., Kachi, N. & Eguchi, K.
Taiwanese Journal of Entomological Studies 3 53-59 2018 [Refereed]
Soil erosion alters soil chemical properties and limits grassland plant establishment on an oceanic island even after goat eradication
Hata, K., Osawa, T.,Hiradate, S. & Kachi, N.
Restoration Ecology 27 333-342 2018 [Refereed]
Distance- and densisity-dependent leaf dynamics of seedlings of a tropical rainforest tree
Journal of Forest Research 22 135-140 2017 [Refereed]
Effects of the vertical distribution of a root-feeding insect (Anomala cuprea) on the yield, mortality, and size structure of Lolium perenne populations at different plant densities
Tsunoda, T., Kachi, N. & Suzuki, J-I.
Botany 95 37-44 2017 [Refereed]
Belowground herbivory decreases shoot water content and biomass of Lolium perenne seedlings under nutrient-poor conditions
Hiradate, S., Morita, S., Hata, K.,Osawa, T., Sugai, K. & Kachi, N.
Catena 133 495-502 2015 [Refereed]
Fine-scale distribution of aboveground biomass of herbaceous vegetation and soil nutrients on an oceanic island after goat eradication are correlated with grazing damage and seabird nesting
Hata, K., Kohri, M., Morita, S., Hiradate, S. & Kachi, N.
Effects of the duration and inorganic nitrogen composition of a nutrient-rich patch on soil exploration by the plants of Lolium perenne in a heterogeneous environment
To evaluate the effects of low atmospheric pressure on leaf photosynthesis, we compared the photosynthesis of identical leaves of Fagus crenata at lowland (0 m a.s.l.) and at highland (2360 m a.s.l.). At the high altitude, the atmospheric pressure...
Leaf herbivory and defenses of Dipterocarp seedlings in the Pasoh forest reserve
Numata, S., Kachi, N., Okuda, T. & Manokaran, N.
Pasoh: Ecology of a Lowland Rain Forest in Southeast Asia.(ed. by Okuda, T., Manokaran, N., Matsumoto, Y., Niiyama, K, Thomas, S. C. & Ashoton, P. S.) Springer(Tokyo) 495-505 2003 [Refereed]
Yasuda, M., Matsumoto, J., Osada, N., Ichikawa, S., Kachi, N., Tani, M., Okuda, T. , Furukawa, A., Nik, A. R. and Manokaran, N.
Journal of Tropical Ecology 15 437-449 1999 [Refereed]
Heterogeneity of light availability and its effects on simulated carbon gain of tree leaves in a small gap and the understory in a tropical rain forest
Tang, Y-H., Kachi, N., Furukawa, A. & Awang, M.
Biotropica 31 268-278 1999 [Refereed]
Equilibrium status of species diversity and composition in lowland dipterocarp forest in Peninsular Malaysia
Okuda, T., Kachi, N. & Manokaran, N.
Global Environmental Research 3 81-91 1998 [Refereed]
Shoot population dynamics of Carex kobomugi on a coastal sand dune in relation to its zonal distribution
Ishikawa, S-I. and Kachi, N.
Australian Journal of Botany 46 111-121 1998 [Refereed]
Water use and leaf structure of evergreen shrub Eurya emarginata (Theaceae) and E. japonica in coastal and inland habitats
Mishio, M. & Kachi, N.
Australian Journal of Botany 46 135-142 1998 [Refereed]
We examined seed germination of Lobelia boninensis Koidz. (Campanulaceae) in incubators and its seed production in a greenhouse. This monocarpic perennial is an endemic and endangered species in the Miscanthus boninensis vegetation on coastal clif...
The aim of the present study was to evaluate the fitness consequences of resource allocation balance between seeds and vegetative propagules in an understory herb, Syneilesis palmata. Based on field censuses, transition matrices were constructed t...
Spatial Pattern of adult trees and seedling survivorship in Pentaspadon motleyi Hook, f. in a lowland rain forest in Peninsular Malaysia
Okuda, T., Kachi, N., Yap, S. K. & Manokaran, N.
Journal of Tropical Forest Science 7 475-489 1994 [Refereed]
Spatial pattern of saplings and adult trees of canopy- and sub-canopy-forming species in a lowland rain forest in Peninsular Malaysia
Okuda, T., Kachi, N., Yap, S. K. & Manokaran, N.
Biodiversity-Its Complexity and Role. (ed. M. Yasuno, M. M. Watanabe) Global Environmental Forum(Japan) 99-110 1994 [Refereed]
Effects of nutrient depletion on growth and on the capacity of roots to absorb nitrogen in Holcus lanatus and Festuca ovina at warm and cool temperatures
Kachi, N. & Rorison, I. H.
New Phytologist 115 531-537 1990 [Refereed]
Evolution of size-dependent reproduction in biennial plants: a demographic approach
Kachi, N.
Biological Approaches and Evolutionary Trends in Plants (ed. S. Kawano) Academic Press(London) 367-385 1989 [Refereed]
Optimal partitioning between roots and shoot in plants with contrasted growth rates in response to nitrogen availability and temperature
Kachi, N. & Rorison, I. H.
Functional Ecology 3 549-559 1989 [Refereed]
Graphical analysis of the life history evolution of Oenothera glazioviana Micheli. Oecologia
Hirose, T. & N. Kachi
Oecologia 68 490-495 1986 [Refereed]
A stochastic model for describing revegetation following forest cutting: an application of remote sensing
Kachi, N., Y. Yasuoka, T. Totsuka, & K. Suzuki
Ecological Modeling 32 105-117 1986 [Refereed]
Population dynamics of Oenothera glazioviana in a sand dune system with special reference to the adaptive significance of size-dependent reproduction
Kachi, N. & T. Hirose
Journal of Ecology 73 887-901 1985 [Refereed]
Limiting nutrients for plant growth in coastal sand dune soils
Kachi, N. & T. Hirose
Journal of Ecology 71 937-944 1983 [Refereed]
Bolting induction in Oenothera erythrosepala Borbas in relation to vernalization, photoperiod, and rosette size
Kachi, N. & T. Hirose
Oecologia 60 6-9 1983 [Refereed]
Critical plant size for flowering in biennials with special reference to their distribution in a sand dune system
Hirose, T. & N. Kachi
Oecologia 55 281-284 1982 [Refereed]
Multivariate approaches to the plant communities related with edaphic factors in the dune system at Azigaura, Ibaraki Pref. II. Ordination
Kachi, N. & T. Hirose
Japanese Journal of Ecology 29 359-368 1979 [Refereed]
Multivariate approaches to the plant communities related with edaphic factors in the dune system at Azigaura, Ibaraki Pref. I. Association-analysis
Kachi, N. & T. Hirose
Japanese Journal of Ecology 29 17-27 1979 [Refereed]
On the Bonin (Ogasawara) Islands, thick litter accumulation of an alien woody species, Casuarina equisetifolia is observed under its dense canopy. This observation suggests that the thick litter accumulation could prevent establishment of seedling...
Minami-Iwo-To Island is small volcanic island approximately 1300 km off the south of Tokyo (24°13.7N, 141°27.7E) and it has 367 ha in area and 916 m in altitude. Since the island's discovery, it remains nearly uninhabited to this day. The biodiver...
Changes in vegetation of the Nakoudojima island between 1978, 1991 and 2003 were quantified with aerial photographs. The island was divided into 9200 plots (10m×10m) on the aerial photographs and the plots were categorized into forest, grassland, ...
Effects of seabird nesting on plant growth via soil chemical properties in the Ogasawara Islands, Japan. S02 symposium: Plant-soil interactions: from basic to applied perspectives
KACHI, Naoki
The 62nd Annual Meeting of the Ecological Society of Japan 19 Mar 2015
Impacts of eradication of non-native animals on ecosystem functions of an oceanic island in the Ogasawara (Bonin) Islands, Japan
Kachi, N., Hata, K., Yoshida, K., Kawakami, K. & Hiradate, S.
International Conference on Island Evolution, Ecology, and Conservation Jul 2014
Impacts of eradication of non-native animals on ecosystem functions of an oceanic island in the Ogasawara (Bonin) Islands, Japan.
Kachi, N., Hata, K., Yoshida, K., Kawakami, K. & Hiradate, S.
International Conference on Island Evolution, Ecology, and Conservation Jul 2014
We investigated direct and indirect effects of an invasion of alien shrub, Leucaena leucocephala, on subsequent establishment of native mid-successional tree, Schima mertensiana at early-successional stages in Chichijima Island, a subtropical ocea...
GROWTH ANALYSIS AND MYCORRHIZAL FORMATION ANALYSIS WERE CONDUCTED FOR SEEDLING S OF AMBROSIA TRIFIDA, AN ALIEN PLANT SPECIES, IN ENVIRONMENTAL SIMULATORS WITH THREE NITROGEN CONDITIONS (NO NUTRITION, HIGH AMMONIA-FORMED NITROGEN RATIO, AND HIGH NI...
1. The environments of forest understory vary during regeneration processes of individual canopy trees. Temporal changes in understory environments directly affect the life-history and population dynamics of understory herbaceous plants. To unders...
1. We investigated genetic basis of size-dependent reproduction of semelparous herbaceous plants based on demographic analyses.2. From pot culture experiment, we found that size and age of reproduction of Aster kantoensis are determined by the fam...
The PCR method was applied to identify genetic structure of a local population of a clonal plants, Carex kobomugi. The species is native to Japanese sand dunes and reproduce clonally by rhizomes. The longevity of each ramete is 1 year and each ram...
Carex Kobomugi is a major component of coastal sand-dune vegetation in Japan. It is hypothesized that the restricted distribution of this species to sand dunes is due to competitive exclusion by other inland species like Imperata cylindrica var.ko...
In this project, we investigated the situation and mechanism of the acclimation and adaptation of plants to thermal and light environments. Three various approaches, i. e. field investigation, laboratory experiment and theoretical analysis with ma...
