Kaoru Maetô

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Quercus crispula (=Q. mongolica var. grosseserrata) is the predominant tree species in cool temperate, mixed broadleaf/conifer forests in northern Japan. We compared 11 years of data on acorn production in a population of Q. crispula, with data on seed-insect populations, to try to answer the following questions: (1) Does Q. crispula show a regular pattern(More)
In the humid warm-temperate zone of southwestern Japan, old-growthforests have been seriously fragmented to small remnants due to traditionalagriculture and coppicing as well as recent rapid plantation with conifers.Assemblages of longicorn beetles (Coleoptera: Disteniidae and Cerambycidae) werecompared among old-growth forests, second-growth forests and(More)
Biodiversity continues to decline in the face of increasing anthropogenic pressures such as habitat destruction, exploitation, pollution and introduction of alien species. Existing global databases of species' threat status or population time series are dominated by charismatic species. The collation of datasets with broad taxonomic and biogeographic(More)
Mature tree effects on the mortality and herbivory of current-year seedlings were investigated in a common subcanopy species,Acer mono Maxim., in a cool temperature mixed forest. The mortality of natural seeldings under the canopy withA. mono layers was greater than that under the canopy without them. Also, the mortality of seedlings in planters located(More)
We investigated the effects of line thinning on the abundance of Hymenoptera in two Japanese cedar plantations in northern Hyogo Prefecture, central Japan, in order to evaluate the effectiveness of this silvicultural treatment for ecosystem management. Line thinning is a silvicultural treatment practiced in Japan, where linear stand sections are cut(More)
We evaluated the effectiveness of line thinning, a new silvicultural technique, toward restoring diversity of Coleoptera in overstocked Cryptomeria japonica D. Don plantations in central Japan. We compared the abundance of some common Coleoptera families between line-thinned stands and adjacent unthinned stands in two plantations: low-elevation Sugi site (4(More)
The purpose of this study is to clarify the differences in the aquatic invertebrate assemblage between the two basins that have the most common types of Japanese headstream forests – an old-growth natural forest (ONF) and a planted coniferous forest (PCF) – in the Kuroson stream of the Shimanto River basin and to find the groups that tend to inhabit either(More)
In terrestrial ecosystems, ecological processes and patterns within focal patches frequently depend on their matrix. Crop fields (focal patches) are often surrounded by a mosaic of other land-use types (matrix), which may act as habitats for organisms and differ in terms of the immigration activities of organisms to the fields. We examined whether matrix(More)
Human-induced disturbances and wildfires can transform areas of tropical rainforest into Imperata-dominated grassland, but it may be possible that recovery of biodiversity is facilitated by reforestation with fast-growing trees. We compared the assemblages of braconid wasps as parasitoids of taxonomically diverse groups of insects among Imperata grasslands,(More)
We investigated the seasonal changes in the abundance of coleopteran and hymenopteran functional groups to evaluate the ecological suitability of line thinning in overstocked Japanese cedar plantations in central Japan. In line thinning, 3- to 5-m-wide sections of the stand are harvested parallel to the mountain slope and perpendicular to the forest roads.(More)