scholarly journals The water budget of an amazonian rain forest

1981 ◽  
Vol 11 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Cari F. Jordan ◽  
Jochen Heuveldop
Keyword(s):  
Surface Runoff ◽  
Water Budget ◽  
Rain Forest ◽  
Amazon Basin ◽  
Rio Negro ◽  
Leaf Surfaces ◽  
Stem Flow ◽  
Amazonian Rain Forest ◽  
San Carlos ◽  
Yearly Precipitation

Abstract In a tropical rain forest near San Carlos de Rio Negro, Venezuela, average yearly precipitation from September 1, 1975, through August 31, 1977 was 3664 mm. Throughfall was 87% of precipitation, stem flow was 8%, transpiration was 47%, evaporation from leaf surfaces was 5%, and sub-surface runoff was 48%. These results conform closely to the prediction of Marques et al. (1977) that 48% of the precipitation that falls on the central Amazon Basin is derived from evapotranspiration within the Basin.

scholarly journals Transpiration rates for several woody successional species and for a pasture in the upper Amazon basin in Venezuela

1990 ◽  
Vol 20 (0) ◽  
pp. 29-38 ◽  
Author(s):  
Jeffrey C. Luvall ◽  
Christopher Uhl
Keyword(s):  
Amazon Basin ◽  
Tritiated Water ◽  
Primary Forest ◽  
Rio Negro ◽  
Time Period ◽  
Successional Species ◽  
Undisturbed Forest ◽  
San Carlos ◽  
The Village ◽  
Established Species

Evapotranspiration rates for a eight month old tropical pasture were estimated using the Penman-Monteith equation. Transpiration rates for several woody secondary successional species and stump sprous in the pasture and conucos (farm sites) were measured using the tritiated water technique.The stuty area was located near the village of San Carlos de Rio Negro (1° 56' N, 67° 03' W) in southern Venezuela, near the confluence of the Casiquiare and the Rio Guania wich forms the Rio Negro. The terrain was gently rolling with the areas between the small ridges supporting Amazon caatina forests on spodosols, and higher never flooded areas (tierra firma) supporting a mixed species forest.Results indicated that for a one month period, ET loss (0.46 cm/day) from the pasture, including soil and root mat evaporation, was about 0.43 cm/day less than estimated from the adjacent undisturbed forest (0.89 cm/day). Pan A evaporation for the same time period was 0.64 cm/day. Transpiration rates for seed established species were significantly less (0.38 cm/day) than for stump sprouts (1.09 cm/day) of the primary forest in the pasture.

Floral Scent Attraction in Geonoma macrostachys, an Understorey Palm of the Amazonian Rain Forest

Oikos ◽  
1999 ◽  
Vol 85 (3) ◽  
pp. 409 ◽  
Author(s):  
Jette T. Knudsen ◽  
Susanna Andersson ◽  
Peter Bergman
Keyword(s):  
Rain Forest ◽  
Floral Scent ◽  
Amazonian Rain Forest

The human factors of the sport and recreational fishery of San Carlos de Bariloche, Rio Negro, Argentina

2000 ◽  
Vol 49 (2) ◽  
pp. 141-153 ◽  
Author(s):  
P.H Vigliano ◽  
G Lippolt ◽  
A Denegri ◽  
M Alonso ◽  
P Macchi ◽  
...  
Keyword(s):  
Human Factors ◽  
Rio Negro ◽  
Recreational Fishery ◽  
San Carlos

scholarly journals Association of Ant Predators and Edaphic Conditions with Termite Diversity in an Amazonian Rain Forest

Biotropica ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 237-245 ◽  
Author(s):  
Cristian S. Dambros ◽  
José W. Morais ◽  
Alexandre Vasconcellos ◽  
Jorge L. P. Souza ◽  
Elizabeth Franklin ◽  
...  
Keyword(s):  
Rain Forest ◽  
Edaphic Conditions ◽  
Amazonian Rain Forest

scholarly journals New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin

2014 ◽  
Vol 12 (2) ◽  
pp. 327-332 ◽  
Author(s):  
Bruno F. Melo ◽  
Richard P. Vari
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
Northern Brazil ◽  
Adipose Fin ◽  
A New Species

A new species of Cyphocharax, Curimatidae, apparently endemic to the blackwater upper rio Negro of the Amazon basin in northern Brazil, is described.The new species is readily distinguished from its congeners by the presence of a distinctly longitudinally elongate, posteriorly vertically expanding patch of dark pigmentation along the midlateral surface of the caudal peduncle, with the patch extending from the base of the middle caudal-fin rays anteriorly past the vertical through the posterior terminus of the adipose fin. The new species additionally differs from all congeners in details of body and fin pigmentation and meristic and morphometric ratios. Evidence for the assignment of the species to Cyphocharax and the occurrence of other species of the Curimatidae apparently endemic to the upper rio Negro catchment is discussed.

scholarly journals Redescription of Odontostilbe pulchra (Gill, 1858) (Teleostei: Characidae: Cheirodontinae), and description of two new species from the río Orinoco basin

2007 ◽  
Vol 5 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Cristina M. Bührnheim ◽  
Luiz R. Malabarba
Keyword(s):  
New Species ◽  
South America ◽  
Amazon Basin ◽  
Rio Negro ◽  
Species Inquirenda ◽  
Two New Species ◽  
Northern South America

Odontostilbe pulchra, previously considered species inquirenda in Cheirodontinae and doubtfully assigned from the río Orinoco basin, is redescribed with the rediscovery of two syntypes. Originally described to the Island of Trinidad, O. pulchra is widespread in Venezuela, the río Orinoco basin, in smaller coastal drainages of northern South America, in the Lake Valencia system, and río Essequibo basin. A punctual occurrence in the upper rio Negro, near southernmost headwaters of the río Orinoco, extends its distribution to the Amazon basin. Additionally, two new species of Odontostilbe from the río Orinoco basin are described.

scholarly journals Del dicho al hecho: el derecho a la salud en Río Negro, Argentina

2017 ◽  
Vol 22 (65) ◽  
pp. 359-371
Author(s):  
Soledad Analía Perez ◽  
Serena Perner
Keyword(s):  
Rio Negro ◽  
San Carlos

En el presente artículo analizamos la distancia entre el plan de salud vigente en la provincia de Río Negro, Argentina, el marco de oportunidades y recursos que brinda el Estado y las actividades de cuidado que se llevan a cabo en un Centro de Salud ubicado en la ciudad de San Carlos de Bariloche desde un enfoque de derechos. Ponemos en diálogo el plan de salud provincial con las percepciones del personal de dicho centro surgidas de entrevistas en profundidad, observaciones y grupos focales, analizando indicadores de estructura y de proceso.

Congruence between floristic patterns of trees and lianas in a southwest Amazonian rain forest

Ecography ◽  
2007 ◽  
Vol 30 (4) ◽  
pp. 561-577 ◽  
Author(s):  
Manuel J. Macía ◽  
Kalle Ruokolainen ◽  
Hanna Tuomisto ◽  
Javier Quisbert ◽  
Victoria Cala
Keyword(s):  
Rain Forest ◽  
Floristic Patterns ◽  
Amazonian Rain Forest
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