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Summary of observations
| Precipitation and wind speed & direction |
| Sediment and nutrient yields from various types of land use |
| Sediment and nutrient transports in agricultural watercourses and rivers |
| Transport of dissolved nitrogen through ground water |
| Behavior of sediment and nutrient movement in mangrove |
| Sediment and nutrients in Nagura bay |
| Land-originated nitrogen contained in sea grass |
| Artificial cultivation of corals in Nagura bay and Sekisei coral sea |
