Geological Hazards Related To Offshore Drilling And Construction In The Orinoco River Delta Of Venezuela

1979 ◽  
Author(s):  
J. Butenko ◽  
J.P. Barbot
Keyword(s):  
River Delta ◽  
Geological Hazards ◽  
Offshore Drilling ◽  
Orinoco River

Hemoglobin variants, hematological parameters andβ-globin gene cluster haplotypes in an isolated Amerindian group from the Orinoco River Delta

2008 ◽  
Vol 35 (2) ◽  
pp. 250-255 ◽  
Author(s):  
Anabel Arends ◽  
Marycarmen Chacín ◽  
Martha Bravo-Urquiola ◽  
Tibisay Arends De O ◽  
Maritza Álvarez ◽  
...  
Keyword(s):  
Gene Cluster ◽  
Hematological Parameters ◽  
Globin Gene ◽  
River Delta ◽  
Orinoco River ◽  
Globin Gene Cluster ◽  
Hemoglobin Variants

Aquatic vegetation of the Orinoco River Delta (Venezuela). An overview

Hydrobiologia ◽  
1996 ◽  
Vol 340 (1-3) ◽  
pp. 109-113 ◽  
Author(s):  
Giuseppe Colonnello Bertoli
Keyword(s):  
Aquatic Vegetation ◽  
River Delta ◽  
Orinoco River

Cover Fire emissions from the Orinoco river delta

1997 ◽  
Vol 18 (5) ◽  
pp. 1007-1008
Author(s):  
C. Balladares ◽  
R. Lazo ◽  
A. M. Martinez
Keyword(s):  
River Delta ◽  
Fire Emissions ◽  
Orinoco River

Reproductive cycle of the barred sorubim Pseudoplatystoma fasciatum (Linnaeus, 1766), in the upper delta of the Orinoco River, Delta Amacuro State, Venezuela

2014 ◽  
Vol 65 (2) ◽  
pp. 124
Author(s):  
Annie Silva-Acuña ◽  
Alexander José Barrios
Keyword(s):  
Size Range ◽  
Reproductive Season ◽  
River Delta ◽  
Size At Maturity ◽  
Reproductive Parameters ◽  
Delta Region ◽  
Fishery Resource ◽  
Orinoco River ◽  
Gonadal Index ◽  
Size Interval

Pseudoplatystoma fasciatum represents one of the most important items in the continental fisheries of Venezuela. The great fishing pressure exerted on this species has decimated the populations in the Orinoco River Delta and other regions of the country. The current condition of the population in the delta region is unknown and information about basic biological parameters is unavailable. Hence, population and reproductive parameters of this catfish were determined in this region. Results showed that the size interval was from 30 to 105 cm total length (TL), generally smaller than the size range found in other regions of the country. The largest value for the gonadal index for females was 116, recorded in July. Size at maturity of 50% of females was 46.38 cm TL, a smaller value than others reported for the Orinoco River Basin. Maturation of oocytes was synchronous, showing a single total spawning per year. The capture of P. fasciatum was continuous throughout the year, including mature individuals during the reproductive season, suggesting a possible utilization of the delta region as reproductive site. A total of 61% of the individuals were below the minimum legal size, indicating deficient management of this fishery resource in the Orinoco River Delta.

Assessment of environmental changes in the Orinoco River delta

2002 ◽  
Vol 3 (1-3) ◽  
pp. 20-35 ◽  
Author(s):  
H. Echezuría ◽  
J. Córdova ◽  
M. González ◽  
V. González ◽  
J. Méndez ◽  
...  
Keyword(s):  
Environmental Changes ◽  
River Delta ◽  
Orinoco River
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