Results 231 to 240 of about 2,070,775 (260)
Some of the next articles are maybe not open access.
2009
Introduction Since the arrival of human beings about 12 000 years ago, wetlands have been favorite colonization areas because of their rich food resources. On Marajó Island at the mouth of the Amazon River and in its lower course, Amerindians built large chiefdoms on elevated places that provided protection against flooding (Roosevelt 1999).
Junk, Wolfgang Johannes +1 more
openaire +3 more sources
Introduction Since the arrival of human beings about 12 000 years ago, wetlands have been favorite colonization areas because of their rich food resources. On Marajó Island at the mouth of the Amazon River and in its lower course, Amerindians built large chiefdoms on elevated places that provided protection against flooding (Roosevelt 1999).
Junk, Wolfgang Johannes +1 more
openaire +3 more sources
Backwater effects in the Amazon River basin of Brazil
Environmental Geology and Water Sciences, 1991The Amazon River mainstem of Brazil is so regulated by differences in the timing of tributary inputs and by seasonal storage of water on floodplains that maximum discharges exceed minimum discharges by a factor of only 3. Large tributaries that drain the southern Amazon River basin reach their peak discharges two months earlier than does the mainstem ...
Robert H. Meade +3 more
openaire +1 more source
Increasing incidence of malaria in the Negro River basin, Brazilian Amazon
Transactions of the Royal Society of Tropical Medicine and Hygiene, 2010Malaria in Brazil is virtually restricted to the Amazon Region, where it has a heterogeneous geographic distribution. We reviewed secondary data in order to describe the regional and temporal distribution of 8018 malaria cases seen between 2003 and 2007 in Santa Isabel do Rio Negro, a municipality in the northwest Brazilian Amazon.
A C, Cabral +4 more
openaire +2 more sources
Managing the largest Transboundary River Basin in the World: The Amazon Basin
Water International, 2007ring the Water Week Stockholm 2007, a seminar “Managing the largest Transboundary River Basin in the World: The Amazon Basin” was organ zed by the Nat onal Water Agency of Braz l ANA, Internat onal Water eso rces Association W A, The Global Environmental Facilit – GEF, The Amazon ooperation Treat Organization A TO, The Organization o ...
openaire +1 more source
Sediment Response to Deforestation within the Amazon River Basin
2022<p>The Amazon River Basin is the largest river system in the world, accounting for one-fifth of global freshwater discharge and supplying 40% of the Atlantic Ocean&#8217;s sediment flux. Though the Amazon is most often recognized for its rich biological diversity, it also performs a suite of ecosystem functions such as river flow ...
Anuska Narayanan, Sagy Cohen
openaire +1 more source
Characterization of confluences in free meandering rivers of the Amazon basin
Geomorphology, 2014Abstract Past studies on river confluence dynamics are mostly based on a limited number of experimental and field data that mainly represent the morphodynamic, hydrodynamic, and sedimentary processes of alluvial river channels with limited planform activity and concentrated solely around the confluence region.
Ronald R. Gutierrez +3 more
openaire +1 more source
Mercury in the Environment and Riverside Population in the Madeira River Basin, Amazon, Brazil
Science of the Total Environment, 2006This work presents quality control results on the mercury concentrations in different environmental (river sediments, forest soils, river suspended matter and fish) and human samples from the lower Madeira River, Amazon sampled between 2001 and 2003, about 15-20 years after the nearly cessation of gold mining activities in the region, which reached its
Wanderley Rodrigues Bastos +2 more
exaly +3 more sources
Carbon river fluxes and weathering CO2 consumption in the Congo and Amazon river basins
Applied Geochemistry, 1994Data on carbon river fluxes recently obtained by the authors for the Congo basin within the framework of the PIRAT Program (INSU-CNRS/ORSTOM) are compared with results previously obtained for the Amazon basin. A special interest is devoted to the bicarbonate river fluxes and to their relationships with river discharges. The flux of atmospheric and soil
Probst, Jean-Luc +2 more
openaire +3 more sources