The acorn-producing oak Quercus crispula Blume is shade-tolerant and its seedlings were found to be underdispersed on the forest floor, forming seedling aggregations near fertile canopy trees. However, 84.4% of the seedlings were dead within 2 years, with the highest mortality near the adult canopy trees of Q. crispula. This was mostly due to the high levels of herbivory by lepidopteran larvae. The most serious damage was caused by spring consumers, which fed on the leaves of canopy trees in June and, when the food quality of the leaves declined, fell down to the forest floor to consume the juveniles, including the seedlings. Contrary to the expectation of the herbivore–host arms race theory, most of the herbivores were polyphagous. The most dominant spring consumer Telorta edentata (Leech) was also polyphagous, and its distribution on the forest floor showed a high level of association with the distribution of dead oak seedlings.
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REFERENCES
Agrell J., Mcdonald E. P., Lindroth R. L. (2000) Effects of CO2 and light on tree phytochemistry and insect performance. Oikos 88: 259–272.
Augspurger C. K. (1983) Seed dispersal of the tropical tree, Platypodium elegans, and the escape of its seedlings from fungal pathogens. Journal of Ecology 71: 759–771.
Augspurger C. K. (1984) Offspring recruitment around tropical trees: Changes in cohort distance with time. Oikos 40: 189–196.
Christian A. (1991) Distribution of seedlings and saplings of Quercus robur in a grazed deciduous forest. Journal of Vegetation Science 2: 279–282.
Clark D. A. & Clark D. B. (1984) Spacing dynamics of a tropical rain forest tree: Evaluation of the Janzen–Connell model. American Naturalist 124: 769–788.
Connell L. H. (1971) On the role of natural enemies in preventing competitive exclusion in some marine animals and in rain forests. In: Dynamics of Populations (eds P. J. den Boer & G. R. Gradwell) pp. 298–310. Centre for Agriculture Publishing and Documentation (PUDOC), Wageningen.
Cypher J. & Boucher D. H. (1982) Beech–maple coexistence and seedling growth rates at Mount Saint Hilaire, Quebec. Canadian Journal of Botany 60: 1279–1281.
Debussche M. & Isenmann P. (1994) Bird-dispersed seed rain and seedling establishment in patchy Mediterranean vegetation. Oikos 69: 414–426.
Feeny P. P. (1970) Seasonal changes in oak leaf tannins and nutrients as a cause of spring feeding in winter moth caterpillars. Ecology 51: 565–581.
Fox E. J. (1977) Alternation and coexistence of tree species. American Naturalist 111: 69–89.
Futuyma D. J. & Gould F. (1979) Associations of plants and insects in a deciduous forest. Ecological Monographs 49: 33–50.
Greene D. F. & Johnson E. A. (1989) A model of wind dispersal of winged or plumed seeds. Ecology 70: 339–347.
Hirabuki Y. (1988) Radiation flux seasonality under two types of forest patches of a reciprocal succession. Saito Ho-on Kai Museum of Natural History Research Bulletin 56: 23–27.
Holmes T. H. (1995) Woodland canopy structure and the light response of juvenile Quercus lobata (Fagaceae). American Journal of Botany 82: 1432–1442.
Horn H. S. (1971) The Adaptive Geometry of Trees. Princeton University Press, Princeton.
Humphrey J. W. & Swaine M. D. (1997a) Factors affecting the natural regeneration of Quercus in Scottish oakwoods. I. Competition from Pteridium aquilinum. Journal of Applied Ecology 34: 577–584.
Humphrey J. W. & Swaine M. D. (1997b) Factors affecting the natural regeneration of Quercus in Scottish oakwoods. II. Insect defoliation of trees and seedlings. Journal of Applied Ecology 34: 585–593.
Hunter A. F. (1991) Traits that distinguish outbreaking and nonoutbreaking macrolepidoptera feeding on northern hardwood trees. Oikos 60: 275–282.
Hunter A. F. (1993) Gypsy moth population sizes and the window of opportunity in spring. Oikos 68: 531–538.
Hunter A. F. & Lechowicz M. J. (1992) Foliage quality changes during canopy development of some northern hardwood trees. Oecologia 89: 316–323.
Ida H. & Nakagoshi N. (1996) Gnawing damage by rodents to the seedlings of Fagus crenata and Quercus mongolica var. grosseserrata in a temperate Sasa grassland–deciduous forest series in southwestern Japan. Ecological Research 11: 97–103.
Iwao S. (1977) Analysis of spatial association between two species based on the interspecies mean crowding. Researches on Population Ecology 18: 243–260.
Janzen D. H. (1970) Herbivores and the number of tree species in tropical forests. American Naturalist 104: 501–528.
Karban R. & Ricklefs R. E. (1984) Leaf traits and the species richness and abundance of Lepidopteran larvae on deciduous trees in southern Ontario. Oikos 43: 165–170.
Koike T. (1988) Leaf structure and photosynthetic performance as related to the forest succession of deciduous broad-leaved trees. Plant Species Biology 3: 77–87.
Kollmann J. & Schill H.-P. (1996) Spatial patterns of dispersal, seed predation and germination during colonization of abandoned grassland by Quercus petraea and Corylus avellana. Vegetatio 125: 193–205.
Kudo G. (1996) Herbivory pattern and induced responses to simulated herbivory in Quercus mongolica var. grosseserrata. Ecological Research 11: 283–289.
Lorimer C. G., Chapman J. W., Lambert W. D. (1994) Tall understory vegetation as a factor in the poor development of oak seedlings beneath mature stands. Journal of Ecology 82: 227–237.
Maetô K. & Fukuyama K. (1997) Mature tree effect of Acer mono seedling mortality due to insect herbivory. Ecological Research 12: 337–343.
Masaki T., Kominami Y., Nakashizuka T. (1994) Spatial and seasonal patterns of seed dissemination of Cornus controversa in a temperate forest. Ecology 75: 1903–1910.
Mellanby K. (1968) The effects of some mammals and birds on regeneration of oak. Journal of Applied Ecology 5: 359–366.
Murakami M. (1998) Foraging habitat shift in the narcissus flycatcher, Ficedula narcissina, due to the response of herbivorous insects to the strengthening defenses of canopy trees. Ecological Research 13: 73–82.
Murakami M. & Wada N. (1997) Difference in leaf quality between canopy trees and seedlings affects migration and survival of spring-feeding moth larvae. Canadian Journal of Forest Research 27: 1351–1356.
Okubo A. & Levin S. A. (1989) A theoretical framework for data analysis of wind dispersal of seeds and pollen. Ecology 70: 329–338.
Ribbens E., Silander Jr J. A., Pacala S. W. (1994) Seedling recruitment in forests: Calibrating models to predict patterns of tree seedling dispersion. Ecology 75: 1794–1806.
Silvertown J. W. (1982) Introduction to Plant Population Ecology. Longman, London.
Southwood T. R. E. (1961) The number of species of insects associated with various trees. Journal of Animal Ecology 30: 1–8.
Systat Inc. (1992) Systat, Version 5.2. Systat Inc. Evanston, Illinois.
Wada N. (1993) Dwarf bamboos affect the regeneration of zoochorous trees by providing habitats to acorn-feeding rodents. Oecologia 94: 403–407.
Wada N. & Ribbens E. (1997) Japanese maple (Acer palmatum var. matsumurae, Aceraceae) recruitment pattern: Seeds, seedlings and saplings in relation to conspecific adult neighbors. American Journal of Botany 84: 1294–1300.
Willson M. F. (1992) The ecology of seed dispersal. In: Seeds. The Ecology of Regeneration in Plant Communities (ed. M. Fenner) pp. 61–86. CAB International, Wallingford.
Woods K. D. (1979) Reciprocal replacement and the maintenance of codominance in a beech-maple forest. Oikos 33: 31–39.
Woods K. D. (1984) Patterns of tree replacement: Canopy effects on understory pattern in hemlock-northern hardwood forests. Vegetatio 56: 87–107.
Yoshida K. (1985) Seasonal population trends of macrolepidopterous larvae on oak trees in Hokkaido, northern Japan. Kontyû 53: 125–133.
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Wada, N., Murakami, M. & Yoshida, K. Effects of herbivore-bearing adult trees of the oak Quercus crispula on the survival of their seedlings. Ecol Res 15, 219–227 (2000). https://doi.org/10.1046/j.1440-1703.2000.00343.x
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DOI: https://doi.org/10.1046/j.1440-1703.2000.00343.x