Results 131 to 140 of about 66,937 (185)

Tracing the impact of the Andean uplift on Neotropical plant evolution. [PDF]

Proc Natl Acad Sci U S A, 2009
Antonelli A, Nylander JA, Persson C, Sanmartín I.   +3 more
europepmc   +1 more source

Solar modulation of Little Ice Age climate in the tropical Andes. [PDF]

Proc Natl Acad Sci U S A, 2006
Polissar PJ, Abbott MB, Wolfe AP, Bezada M, Rull V, Bradley RS.   +5 more
europepmc   +1 more source

On the growth of continents [PDF]

, 1950
Wilson, JT
core  

2015 Commencement - Graduate - College of Dental Medicine and College of Osteopathic Medicine [PDF]

, 2015
Nova Southeastern University
core   +1 more source

Learning Interdependence and Mutual Trust in Environmental Policy Integration:three cases of urban transport governance [PDF]

, 2006
Hansen, Carsten Jahn
core   +1 more source

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Nutrient Loading by Precipitation in the Maracaibo Lake Basin, Venezuela

Water, Air, and Soil Pollution, 2001
Nutrient content and pH of rain samples collected at nine sites during 1988-1996 were studied to determine the amounts of N, P and S added by precipitation over Maracaibo Lake basin. The basin is a wide depression occupied by Lake Maracaibo and extensive alluvial plains and delimited by a mountainous zone of variable physiolgraphic characteristics with
Jose A Morales, Ligbel Sanchez, Harvi Velasquez, Beatriz De Borrego, Marlene De Nava, Denis Portillo, Yulixis Cano, Angel Morillo, Ana Albornoz, Elsa Socorro   +9 more
openaire   +2 more sources

Soils in an Aridic, Ustic, Udic, Climosequence in the Maracaibo Lake Basin, Venezuela

Soil Science Society of America Journal, 1981
Abstract Eight profiles developed from parent materials with low contents of weatherable minerals retained remarkably similar mineralogical suites regardless of soil moisture regime although some mica weathering was detected in the udic soil moisture regime. Sola thickness exceeded 2 m in all profiles.
J. R. Paredes, S. W. Buol
openaire   +2 more sources

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

Journal of Field Archaeology, 1975
AbstractThis paper describes and compares the newly established archeological Lagunillas phase for the Lake Maracaibo Basin in northwestern Venezuela. Lagunillas is characterized by subsistence based on corn, by pile dwellings, and by complex pottery emphasizing plastic decorative techniques. A set of radiocarbon dates places Lagunillas into Period II (
Erika Wagner, Kay Tarble de Ruíz, Kay Tarble de Ruiz   +2 more
semanticscholar   +3 more sources

Inorganic water soluble ions in atmospheric particles over Maracaibo Lake Basin in the western region of Venezuela

Atmospheric Research, 1998
The concentration of nine water soluble ions in aerosol samples on cellulose filters collected by a high-volume cascade impactor was determined for two rural sites in Venezuela. Total suspended particles show a similar size distribution both dry and rainy seasons (MMDs∼2.5 μm).
José A. Morales, Danis Pirela, Marlene G. de Nava, Beatrı́z S. de Borrego, Harvi Velásquez, José Durán   +5 more
openaire   +2 more sources

Rainwater chemestry at the western savannah region of the Lake Maracaibo Basin, Venezuela

Water, Air, & Soil Pollution, 1995
The major part of Venezuela oil production is located in and around the Lake Maracaibo Basin. The samples were collected over a 1-year period at Catatumbo and La Esperanza sites. The rainwater was acidic, with a VWA-pH of 4.6 for Catatumbo and 4.2 for La Esperanza.
J. A. Morales, C. Bifano, A. Escalona
openaire   +2 more sources