Results 171 to 180 of about 232,101 (213)

Nutrient processing in Amazon floodplain lakes

SIL Proceedings, 1922-2010, 1984
(1984). Nutrient processing in Amazon floodplain lakes. SIL Proceedings, 1922-2010: Vol. 22, No. 2, pp. 1294-1298.
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Forest Management Patterns in the Floodplain of the Amazon Estuary

Conservation Biology, 1995
In the Amazon basin, few studies have focused on environmentally sound land‐use alternatives that are linked to markets. This paper analyzes land uses carried out by traditional inhabitants ( ribeirinhos ) on three islands in the Amazon estuary.
Anthony B. Anderson, Pennie Magee, Anne Gély, Mário Augusto Gonçalves Jardim   +3 more
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The Floodplain of the Lower Amazon as a Historical Place

2010
Following William Denevan’s bluff model of riverine settlement, this chapter considers the historical role the floodplain of the Lower Amazon has played in the colonial and postcolonial history of the region. In particular, I focus on the complementarity of the floodplain and the terra firme’s settlement during the period of intense colonization of ...
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Methane emissions to the troposphere from the Amazon floodplain

Journal of Geophysical Research: Atmospheres, 1988
Methane emissions to the troposphere from the Amazon River floodplain have been determined. In total, 94 individual flux measurements were made along a 1,700‐km stretch of the river during the early falling water period of the flood cycle (July–August 1985). The overall average rate of CH4 emission from wetlands was 390 mg CH4 m−2 d−1.
Allan H. Devol, Jeffrey E. Richey, Wayne A. Clark, Stagg L. King, Luiz A. Martinelli   +4 more
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Lateral migration of fishes in Amazon floodplains

Ecology of Freshwater Fish, 1997
Abstract— Migrations of fish in the outlet channel of Lago do Rei, a floodplain lake on Careiro Island in the Amazon River, were examined using three capture methods. Of the 85 species found in the Parana do Rei (channel), 20 migrated between the lake and river. Migrations from the lake to the river occurred in two pulses.
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Methane turnover in exposed sediments of an Amazon floodplain lake

Biogeochemistry, 2000
In the Amazon floodplain large areas of unvegetatedlake sediments are exposed to air during low water. Imeasured methane fluxes from exposed sediments of anAmazonian floodplain lake and assessed the regulatingfactors. Methane emission decreased from values between 10 and 40 μmol CH4 mminus 2 hminus 1to zero when the sediments were exposed to air ...
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Sustainable use of the Amazon River floodplain: Problems and possibilities

Aquatic Ecosystem Health & Management, 2001
Abstract The Amazon River floodplain (várzea) belongs to the few areas in central Amazonia with relatively high natural fertility and productivity, because the annual flooding with sediment-rich water add nutrients to the system. Many development planners consider the area to be of high agricultural production potential and of great ...
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Biogeochemistry of Amazon Floodplain Lakes and Associated Wetlands

2001
Floodplains and associated lakes are important components of the biogeochemistry, ecology, and hydrology of the Amazon basin. Amazon floodplains contain thousands of lakes and associated wetlands linked to each other and to the many rivers of the immense basin. These floodplain lakes modify the passage of flood waves (Richey et al.
John M. Melack, Bruce R. Forsberg
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Nitrogen Turnover in Drying Sediments of an Amazon Floodplain Lake

Microbial Ecology, 2005
In the Amazon floodplain large areas are subject to annual cycles of drying and rewetting. The turnover of nitrogen in the periodically drying sediments is an important regulator of floodplain fertility. In the present study the transition of a lake sediment from flooded to dry conditions was studied with respect to microbial nitrogen turnover.
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Trace elements distribution in the Amazon floodplain soils

Journal of Radioanalytical and Nuclear Chemistry Articles, 1994
Neutron activation analysis was performed on aluvial soil samples from several sites on the floodplains of the Amazon River and its major tributaries for trace elements determination. The spatial and temporal variations of chemical composition of floodland sediments in the Amazon basin are discussed.
E. A. N. Fernandes, E. S. B. Ferraz, H. Oliveira   +2 more
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