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Recent studies have shown significant impacts of past landscapes on present distributions of species, and discussed the existence of an extinction debt. Understanding of the processes building an extinction debt is fundamentally important for explaining present and future diversity patterns of species in fragmented landscapes. Few empirical studies,(More)
To clarify the major factors affecting odonate assemblages in rural reservoir ponds among within-habitat environments, land use around ponds and spatial autocorrelation, we surveyed odonate adults (Zygoptera and Anisoptera) in 70 study ponds in Ibaraki Prefecture, Japan, during three sampling periods in 2005. Redundancy analyses (RDA) for these three factor(More)
The previously developed PADDY-Large model was improved by the coupling of geospatial information about watershed properties (Digital National Land Information and digital cultivated soil maps of Japan). The improved model was used for simulating the spatiotemporal variations of pesticide concentrations in rice paddies located in two river basins. We also(More)
Coexistence and exclusion between humans and monkeys in Japan: Is either really possible?" (2006). Ecological and Environmental Anthropology (University of Georgia). Paper 5. The Japanese people face a cultural and ecological challenge in seeking a new relationship between themselves and the Japanese monkeys (Macaca fuscata). Monkeys are a major(More)
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