Water Level Change and Human Activity in the Amazon

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The objectives of this study are to analyze and explain the relationship that exist between reiver level changes and human activities on the floodplain of the Amazon River. Data will be gathered on the riparian area between the Middle Amazon (Manaus) and the estuary (Belem), where the inhabitant' activities are believed to be most influenced by the fluctuations in river levels. Existing information suggest that water level fluctuations above Obidos are controlled by the annual precipitation regimes. On the other hand, in the estuary, the daily oscillations associated with the tidal regime are more pronounced than the changes brought about by the seasonal rainfall regimes. The specific goals of the research are : 1) to obtain precise water level measurements along seberal points within the proposed study region ; 2) to explain the influences of seasonal and daily fluctuations of river water level on human activities, especially their economy and society.The results were offerd in the re … More search meeting : "Time-space analysis of water level changes and their impacts on human activities in the middle and lower Amazon" to be held in the Faculty of Education, Akita University on December 2,1996 in the following presentations :1. Annual and daily water level changes in the Amazon estuary at the stations of Abaetetuba, Breves and CaxiuanaNoboru Hida (Akita Univ.), Jose Guilherme Maia (Museu Goeldi, Brazil), Mario Hiraoka (Millersv.Univ., USA), Osamu shimmi (Kagawa Univ.) and Nobuaki Mizutani (Ltd.nissaku)2. Annual water level changes of the Rio Negro at Manaus, BrazilNoboru Hida, Jose Djalma C.De Araujo (Admin.do Porto de Manaus), Nobuaki Mizutani and Osamu Shimmi3. Water area of the Amazon on Landsat TM imageMakoto Nishida (Akta Univ.) and Yoichi Kageyama (Akita Univ.)4. Non-timber natural products of Amazon varzeaJose Guilherme Maia5. Human adaptations to changing ecology and economy in the floodplains of the Middle Amazon and estuaryMario Hiraoka6. Water level changes and varzea landscapes in Rio AmazonasOsamu Shimmi and Noboru HidaThese manuscripts will be soon published in some journals and authorized as a style of research book. Less