The First Botanical Exploration to the Upper Cuiarí (Cuyarí) and Isana Rivers, Upper Río Negro Basin, Guainía Department, Colombia

2019 ◽  
Vol 24 (2) ◽  
pp. 83
Author(s):  
Henry Arellano-P. ◽  
Germán Bernal-Gutiérrez ◽  
Albeiro Calero-Cayopare ◽  
Francisco Castro-L. ◽  
Adela Lozano ◽  
...  
Keyword(s):  
Botanical Exploration ◽  
Rio Negro ◽  
Rio Negro Basin

Effects of charging on the chromophores of dissolved organic matter from the Rio Negro basin

2014 ◽  
Vol 59 ◽  
pp. 154-164 ◽  
Author(s):  
Mingquan Yan ◽  
Gregory V. Korshin ◽  
Francis Claret ◽  
Jean-Philippe Croué ◽  
Massimiliano Fabbricino ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Rio Negro ◽  
Rio Negro Basin

scholarly journals A new species of Rineloricaria (Siluriformes: Loricariidae: Loricariinae) from rio Daraá, rio Negro basin, Amazon, Brazil

2008 ◽  
Vol 6 (3) ◽  
pp. 339-346 ◽  
Author(s):  
Lúcia H. Rapp Py-Daniel ◽  
Ilana Fichberg
Keyword(s):  
New Species ◽  
Pectoral Fin ◽  
Variable Size ◽  
Lower Lip ◽  
Rio Negro ◽  
Fin Rays ◽  
Amazonas State ◽  
Rio Negro Basin ◽  
A New Species ◽  
Pectoral Fin Rays

Rineloricaria daraha, new species, is described from the rio Daraá, tributary of rio Negro, northwestern Amazonas State, Brazil. The new species is diagnosed by having seven branched pectoral-fin rays, finger-like papillae on the lower lip, a large multi-angular preanal plate, and at least four quadrangular plates of variable size surrounding the preanal plate. The new species is known only from rio Daraá and its waterfalls.

Assessment of Argentinean Patagonia pollution: PBDEs, OCPs and PCBs in different matrices from the Río Negro basin

2013 ◽  
Vol 452-453 ◽  
pp. 275-285 ◽  
Author(s):  
Karina S.B. Miglioranza ◽  
Mariana Gonzalez ◽  
Paola M. Ondarza ◽  
Valeria M. Shimabukuro ◽  
Federico I. Isla ◽  
...  
Keyword(s):  
Rio Negro ◽  
Argentinean Patagonia ◽  
Rio Negro Basin

scholarly journals Factors affecting Hg (II) adsorption in soils from the Rio Negro basin (Amazon)

Química Nova ◽  
2005 ◽  
Vol 28 (3) ◽  
pp. 438-443 ◽  
Author(s):  
Patricia Miretzky ◽  
Márcia Cristina Bisinoti ◽  
Wilson F. Jardim ◽  
Júlio César Rocha
Keyword(s):  
Factors Affecting ◽  
Rio Negro ◽  
Rio Negro Basin

Zinc and copper behaviour at the soil-river interface: New insights by Zn and Cu isotopes in the organic-rich Rio Negro basin

2017 ◽  
Vol 213 ◽  
pp. 178-197 ◽  
Author(s):  
Damien Guinoiseau ◽  
Alexandre Gélabert ◽  
Thierry Allard ◽  
Pascale Louvat ◽  
Patricia Moreira-Turcq ◽  
...  
Keyword(s):  
Rio Negro ◽  
Cu Isotopes ◽  
Rio Negro Basin

Taxonomic studies in the Macrolobium campestre complex (Leguminosae)

Phytotaxa ◽  
2016 ◽  
Vol 272 (4) ◽  
pp. 257
Author(s):  
MARIA MARICÉLIA FÉLIX-DA-SILVA ◽  
MARIA DE NAZARÉ DO CARMO BASTOS ◽  
ELY SIMONE CAJUEIRO GURGEL
Keyword(s):  
South America ◽  
Taxonomic Diversity ◽  
Taxonomic Study ◽  
Rio Negro ◽  
Center Of Diversity ◽  
Taxonomic Studies ◽  
Rio Negro Basin

Macrolobium is a neotropical genus with approximately 80 species distributed from Central to South America. In Brazil, the upper Rio Negro basin in Amazonia is the center of diversity for the genus. A taxonomic study based on the type materials and additional specimens of M. campestre deposited in several herbaria was carried out. The results show that the taxonomic diversity at the infraspecific level has been overestimated. Thus this work proposes synonymizing Macrolobium campestre var. arirambense R.S. Cowan, M. campestre var. arboreum R.S. Cowan, M. campestre var. longibracteatum R.S. Cowan and M. campestre var. medium R.S. Cowan under Macrolobium campestre Huber.

VARIABILIDADE HIDROCLIMÁTICA DA BACIA HIDROGRÁFICA DO RIO NEGRO: UM ESTUDO DE CASO PARA A PORÇÃO BRASILEIRA

2016 ◽  
Vol 38 ◽  
pp. 376
Author(s):  
Guilherme Goergen ◽  
Jônatan Dupont Tatsch ◽  
Felipe Raphael Theodorovitz Mendoza ◽  
Roilan Hernández Valdés ◽  
Carolina Kannemberg ◽  
...  
Keyword(s):  
Annual Precipitation ◽  
Runoff Coefficient ◽  
Annual Average ◽  
Rio Negro ◽  
Accumulated Rainfall ◽  
Interannual Oscillation ◽  
Streamflow Data ◽  
Rio Negro Basin ◽  
Average Annual Precipitation

In this article we carried out a hydroclimatological characterization of the upper reaches of the Rio Negro Basin, located in the Brazilian portion. We used rainfall and streamflow data from the Instituto Nacional de Meteorologia (INMET) and the Agência Nacional de Águas (ANA) in the 1995-2014 period, collected at different points surrounding the watershed. From the data analysis, we can identify that the average annual precipitation over the basin varies between 1440 and 1480mm. The annual average streamflow was approximately 538,7mm, corresponding to a runoff coefficient of 38%. The accumulated rainfall and streamflow series showed that, as of mid-year 2004, there was a significant reduction of the accumulated streamflow, probably caused by an increase in water demand for agricultural irrigation due to lower volumes of rainfall. Pre-2005 runoff coefficient showed an interannual oscillation between 36% and 42%, after 2005 the runoff coefficient systematically decreased from 45% to 35%. This reduction suggests an increase in the extraction of water for irrigation which consequently favors greater crop evapotranspiration in a period with slightly lower annual precipitation (2005-2014) compared to the previous period (1995-2004).

Prevalence of Trachoma in a Population of the Upper Rio Negro Basin and Risk Factors for Active Disease

2008 ◽  
Vol 15 (4) ◽  
pp. 272-278 ◽  
Author(s):  
Antonio Augusto V. Cruz ◽  
Norma H. Medina ◽  
Marlon M. Ibrahim ◽  
Roberto M. Souza ◽  
Uilho A. Gomes ◽  
...  
Keyword(s):  
Risk Factors ◽  
Rio Negro ◽  
Rio Negro Basin ◽  
Active Disease
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