Rainwater Chemestry at the Western Savannah Region of The Lake Maracaibo Basin, Venezuela

1995 ◽  
pp. 2325-2330
Author(s):  
J. A. Morales ◽  
C. Bifano ◽  
A. Escalona
Keyword(s):  
Maracaibo Basin ◽  
Lake Maracaibo

scholarly journals Squamata reptiles of a fragment of tropical dry forest in northwestern Venezuela (Lake Maracaibo region)

Check List ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1220 ◽  
Author(s):  
Junior T. Larreal ◽  
Gilson A. Rivas ◽  
Carlos Portillo-Quintero ◽  
Tito R. Barros
Keyword(s):  
Species Composition ◽  
San Francisco ◽  
Tropical Dry Forest ◽  
Single Species ◽  
Dry Forest ◽  
Forest Fragment ◽  
Dry Forests ◽  
Maracaibo Basin ◽  
Lake Maracaibo

We present a commented taxonomic list of the reptiles found during herpetological surveys carried out in an isolated fragment of tropical dry forest located in the municipality of San Francisco, Zulia state, northwestern Venezuela between January-December 2011. We report a total of 24 species belonging to the order Squamata, distributed in 12 families and 21 genera. Colubridae is the most diverse family with six species, followed by Dipsadidae (four species), Boidae, Gymnophthalmidae, Phyllodactylidae and Teiidae with two species each, and finally Dactyloidae, Iguanidae, Elapidae, Gekkonidae, Sphaerodactylidae and Viperidae with a single species each. The species composition at this site matches what would be expected in a tropical dry forest in the region. Our study suggests that this isolated tropical dry forest fragment is the last refuge of the herpetofauna that once occupied much of the dry forests of the northern Maracaibo basin and should therefore be considered for conservation purposes.

scholarly journals Origin and Biodegradation of Crude Oils from the Northernmost Fields in the Bolivar Coastal Complex (Zulia State, Venezuela)

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5615
Author(s):  
Marcos Escobar ◽  
Gonzalo Márquez ◽  
Blanca Guerrero ◽  
Patricia Marín ◽  
Carlos Boente ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Carbon Isotope ◽  
Hierarchical Cluster Analysis ◽  
Hierarchical Cluster ◽  
Thermal Maturity ◽  
Classification Schemes ◽  
Maracaibo Basin ◽  
Lake Maracaibo ◽  
Marine Carbonate ◽  
Petroleum Generation

The organic geochemical features of 30 sampled oils from the northern Bolivar Coastal Complex (Lake Maracaibo Basin, NW Venezuela) were examined by combining carbon isotope, classical biomarker, and extended diamondoid analyses to clarify source facies and to assess the thermal maturity and extent of biodegradation of the oils analyzed. In this work, oils are understood as a mixture of two episodes of petroleum generation from the La Luna Formation: a paleobiodegraded oil pulse during Paleogene times and a late pulse having a higher maturity in the post-Oligocene. For the oil samples analyzed, results revealed a mixing composed of different proportions of almost a terrestrially derived siliciclastic-sourced and a purely marine carbonate-sourced oil pulse. Moreover, two main groups of oils were identified by means of hierarchical cluster analysis. Finally, inter- and intrafield variations in the extent of biodegradation were also assessed using two classification schemes (Peters and Moldowan, and Manco scales).

Chemical composition of the atmospheric particles in the lake maracaibo basin western region, venezuela.

1996 ◽  
pp. 658-661
Author(s):  
J.A. Morales ◽  
D. Pirela ◽  
M. Gonzalez De Nava ◽  
B. Sosa De Borrego ◽  
H. Velasquez ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Atmospheric Particles ◽  
Western Region ◽  
Maracaibo Basin ◽  
Lake Maracaibo

The organic geochemistry of oil seeps from the Sierra de Perijá eastern foothills, Lake Maracaibo Basin, Venezuela

2011 ◽  
Vol 42 (7) ◽  
pp. 727-738 ◽  
Author(s):  
M. Escobar ◽  
G. Márquez ◽  
S. Inciarte ◽  
J. Rojas ◽  
I. Esteves ◽  
...  
Keyword(s):  
Organic Geochemistry ◽  
Maracaibo Basin ◽  
Lake Maracaibo ◽  
Oil Seeps

Lagunillas: A New Archeological Phase for the Lake Maracaibo Basin, Venezuela

1975 ◽  
Vol 2 (1/2) ◽  
pp. 105 ◽  
Author(s):  
Erika Wagner ◽  
Kay Tarble de Ruíz ◽  
Kay Tarble de Ruiz
Keyword(s):  
Maracaibo Basin ◽  
Lake Maracaibo

Taxonomic review of Trans-Andean species of Pimelodus (Siluriformes: Pimelodidae), with the descriptions of two new species

Zootaxa ◽  
2017 ◽  
Vol 4299 (3) ◽  
pp. 337 ◽  
Author(s):  
FRANCISCO ANTONIO VILLA-NAVARRO ◽  
ARTURO ACERO P. ◽  
PLUTARCO CALA CALA
Keyword(s):  
New Species ◽  
Species Complex ◽  
Morphometric Data ◽  
Maracaibo Basin ◽  
Lake Maracaibo ◽  
Coastal Rivers ◽  
Two New Species ◽  
Magdalena River ◽  
River Drainages ◽  
The Guianas

We review the trans-Andean species of Pimelodus from Colombia, Panamá, and Venezuela. Based on meristic and morphometric data of preserved specimens, four of five species reported from this region are considered valid and two new Colombian species are described. Here we review Pimelodus coprophagus Schultz, 1944 from Lake Maracaibo Basin of Venezuela and Colombia; Pimelodus grosskopfii Steindachner, 1879 from Magdalena River Basin; Pimelodus navarroi Schultz, 1944 from Lake Maracaibo Basin of Venezuela and Colombia; and Pimelodus punctatus (Meek & Hildebrand, 1913) from Atrato, Baudó, and Tuyra River Basins of Colombia and Panamá. Pimelodus crypticus new species is described from the upper Cauca river drainage. Pimelodus yuma new species is described from the Cauca, Magdalena, and Sinú river drainages. A key for species identification and geographical ranges is provided. We also reidentify trans-Andean specimens previously reported as Pimelodus blochii Valenciennes, 1840, a widespread cis-Andean species, or species complex, that ranges across the coastal rivers of the Guianas and Brazil and the Orinoco and Amazon Basins. 

scholarly journals GENERAL ASPECTS OF A STUDY ON THE REGIMEN OF LAKE MARACAIBO

2011 ◽  
Vol 1 (6) ◽  
pp. 37
Author(s):  
G. A. McCammon
Keyword(s):  
The West ◽  
Southern Boundary ◽  
Mountain Ranges ◽  
Maracaibo Basin ◽  
Lake Maracaibo ◽  
Shifting Sand ◽  
General Aspects

Maracaibo Basin in Western Venezuela, Figure 1, has an area of 90,000 square kilometers. It is isolated from the rest of Venezuela on the East and South, and from Columbia on the West, by mountain ranges which reach a height of 5,000 meters at the southern boundary of the Basin. Lake Maracaibo and its marginal swamps cover 17,700 square kilometers of the Basin. The Lake proper, approximately 150 kilometers long by 110 kilometers wide, is connected to the Gulf of Venezuela by the Straits of Maracaibo and broad shallow Tablazo Bay. It is about 50 kilometers from the lake proper to the gulf. Tablazo Bay is separated from the Gulf of Venezuela by a series of shifting sand islands and bars.

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