The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River

Geomorphology ◽  
2009 ◽  
Vol 113 (3-4) ◽  
pp. 239-252 ◽  
Author(s):  
E.M. Latrubesse ◽  
M.L. Amsler ◽  
R.P. de Morais ◽  
S. Aquino
Keyword(s):  
South American ◽  
The South ◽  
Alluvial River ◽  
Araguaia River ◽  
American Tropics

scholarly journals On the millipede genus Heteropyge: description of the adults of H. araguayensis and revalidation of H. bidens (Diplopoda: Spirostreptida: Spirostreptidae)

2019 ◽  
Vol 109 ◽  
Author(s):  
Luiz F. M. Iniesta ◽  
Rodrigo S. Bouzan ◽  
Antonio D. Brescovit
Keyword(s):  
Additional Data ◽  
New Records ◽  
South American ◽  
The South ◽  
Mato Grosso ◽  
Araguaia River ◽  
First Time

ABSTRACT The South American genus Heteropyge Silvestri, 1897 is revised, accommodating now six accepted species. Adults of the poorly known species Heteropyge araguayensis (Schubart, 1947) are described for the first time from near-topotypic material collected near the Araguaia River, state of Mato Grosso, Brazil. In addition, based on recent samplings and on material from Schubart’s collection, H. bidens (Schubart, 1945) is removed from the synonymy of H. cayennophilus (Silvestri, 1897) and revalidated. Both species show significant differences concerning the gonopods and male leg-pair 1. New records and additional data for H. bidens and H. cayennophilus are provided, as well as an updated checklist of the species belonging to Heteropyge.

Flowers and Beetles in the South American Tropics

Botanica Acta ◽  
1990 ◽  
Vol 103 (4) ◽  
pp. 360-365 ◽  
Author(s):  
G. Gottsberger
Keyword(s):  
South American ◽  
The South ◽  
American Tropics

Monthly variation of fertility and oestrus frequency in crossbred dual-purpose cows in three agroecological areas of the South American tropics

2006 ◽  
Vol 38 (4) ◽  
pp. 353-363 ◽  
Author(s):  
F. Perea G. ◽  
E. Soto B. ◽  
H. Hernández F. ◽  
D. González V. ◽  
R. Palomares N. ◽  
...  
Keyword(s):  
South American ◽  
Monthly Variation ◽  
The South ◽  
Dual Purpose ◽  
American Tropics

Demographic and Architectural Retrodiction: An Ethnoarchaeological Case Study in the South American Tropical Lowlands

1990 ◽  
Vol 1 (4) ◽  
pp. 319-346 ◽  
Author(s):  
Peter E. Siegel
Keyword(s):  
Social Economic ◽  
Nuclear Family ◽  
Forest Community ◽  
South American ◽  
The South ◽  
Social Unit ◽  
Architectural Organization ◽  
American Tropics ◽  
Tropical Lowlands

This paper focuses on the demographic and architectural organization of a South Amerindian tropical-forest community. The household, as the most important social, economic, and behavioral unit in this society, is reflected in the strong quantitative relations between the floor areas of the various structure types and the associated number of occupants. In contrast, floor area/number of occupants relations at the nuclear-family level are quantitatively weak. Since the aboriginal household was also the most important economic and demographic social unit in the South American tropics, the present study may be used to estimate prehistoric settlement population levels using excavated data. As such, this study encourages the use of the direct-historical approach by archaeologists working in the lowlands of South America.

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