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Smithsonian Scientists Find That the Earth Sank Twice,Flooding the Western Amazon
Smithsonian Scientists the Earth Sank Twice Flooding the Western Amazon
2017/7/19
A tiny shark tooth, part of a mantis shrimp and microscopic marine organisms reveal that as the Andes rose, the Western Amazon sank twice, each time for less than a million years. Water from the Carib...
Disentangling the origins of branched tetraether lipids and crenarchaeol in the lower Amazon River: Implications for GDGT-based proxies
Disentangling the origins branched tetraether lipids crenarchaeol in the lower Amazon River Implications GDGT-based proxies
2014/4/2
To trace the origin of branched glycerol dialkyl glycerol tetraethers (brGDGTs), their distribution in soils and suspended particulate matter (SPM) of Amazonian rivers and floodplain lakes (va′ rzeas)...
Organic matter diagenesis and bacterial contributions to detrital carbon and nitrogen in the Amazon River system
Organic matter diagenesis bacterial contributions
2014/4/18
Amino sugars and amino acids, including the bacterial biomarkers muramic acid and D-amino acids, were
measured to investigate the diagenetic alterations of and microbial contributions to detrital org...
Why Does the Amazon Water Flow to the North after Its Discharge?
Amazon Water Flow Discharge northern coast
2009/1/4
Through a simple model, it is demonstrated that earth's sphericity (the beta effect) imposes a severe constraint on the discharge pattern near the equator. Using either bottom or lateral friction to c...
Influence of the Amazon River plume on distributions of free-living and symbiotic cyanobacteria in the western tropical north Atlantic Ocean
Influence of the Amazon River plume distributions of free-living symbiotic cyanobacteria the western tropical north Atlantic Ocean
2014/4/23
The vertical and horizontal distributions of seven diazotrophic populations in the western tropical north Atlantic (WTNA) Ocean were examined using a nifH DNA quantitative polymerase chain reaction (Q...
Contributions of carbon and nitrogen from the Andes Mountains to the Amazon River: Evidence from an elevational gradient of soils, plants, and river material
carbon and nitrogen Andes Mountains Amazon River elevational gradient of soils plants river material
2014/5/9
We determined the carbon (C) and nitrogen (N) elemental and stable isotopic composition of riverine and terrestrial organic matter (OM), as well as the concentration of dissolved organic C (DOC), δ15N...
Spatio-temporal geochemistry of mercury in waters of the Tapajo′s and Amazon rivers, Brazil
he Tapajo′s Amazon rivers
2014/6/9
Spatial and temporal variations of mercury (Hg) concentrations were monitored in the surface waters from the
lower portion of the Tapajo′s River, the Arapiuns River, its principal tributary, and the ...
Sorptive fractionation of dissolved organic nitrogen and amino acids onto fine sediments within the Amazon Basin
dissolved organic nitrogen amino acids
2014/5/30
A consistent observation of river waters in the Amazon Basin and elsewhere is that suspended fine particulate
organic matter (FPOM) is compositionally distinct from coexisting dissolved organic...