Results 31 to 40 of about 879 (163)

Nutritional assessment of tropical pastures as a sustainability strategy in dual-purpose cattle ranching in the South of Lake Maracaibo, Venezuela

Journal of the Saudi Society of Agricultural Sciences, 2021
Pastures represent the greatest sustainability challenge for tropical cattle, as they are fibrous pastures, low in protein, with few soluble carbohydrates and limited digestibility.
Juan Pablo Uzcátegui-Varela, Kendry Chompre, Daniel Castillo, Sairo Rangel, Armando Briceño-Rangel, Andrés Piña   +5 more
doaj   +1 more source

The Antillean Manatee in the North of Maracaibo Lake (Venezuela): Distribution, and Conservation Issues

Acta Biológica Colombiana
In Venezuela, Antillean manatees (Trichechus manatus manatus) have declined mainly due to habitat loss and degradation, but other threats to the species persist.
Adda Gabriela Manzanilla-Fuentes, Amanda Pérez de Villasmil, Nataly Castelblanco-Martínez, Jim Hernández, Andrés Eloy Seijas, Rafael Moreno-Arias   +5 more
doaj   +1 more source

Exiled From Their Own Lands: Indigenist Policies, Oil, and Colonial Plunder in 20th Century Venezuela

The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 2, June 2026.
ABSTRACT This article examines the historical displacement of Indigenous peoples in Venezuela, focusing on the links between indigenist policies and the exploitation of natural resources, particularly oil, throughout the 20th century. Using a combined historical and ethnographic approach, it demonstrates how the formation of the Venezuelan nation‐state
Gabriel Tardelli
wiley   +1 more source

A new species of Hoplomyzon (Siluriformes: Aspredinidae) from Maracaibo Basin, Venezuela: osteological description using high-resolution computed microtomography of a miniature species

Neotropical Ichthyology, 2017
A new miniature species of banjo catfish of the genus Hoplomyzon is described from the Lake Maracaibo Basin in Venezuela. The new species is distinguished from all its congeners by the straight anterior margin of the mesethmoid (vs.
Tiago P. Carvalho, Roberto E. Reis, John P. Friel   +2 more
doaj   +1 more source

Serum calcium and its relationship with immunoglobulin G (IgG) levels in prepartum buffaloes from the Venezuelan humid tropics

Revista Científica, 2023
The immune system partially recognizes specific antigens due to the role of calcium (Ca2+) as an intracellular second messenger that regulates the humoral immune response.
Juan Pablo Uzcátegui-Varela, Anacelmira Urbina Andueza, Janeth Caamaño Carrero   +2 more
doaj   +1 more source

Ecological Niche Modeling of Hoplias malabaricus (Characiformes, Erythrinidae) Under Climate Change Scenarios

Ecology and Evolution, Volume 15, Issue 11, November 2025.
This study employs ecological niche models (ENMs) to project current and future habitat suitability for a genetically validated lineage of Hoplias malabaricus, a widely distributed Neotropical freshwater predator. ABSTRACT Freshwater fish are highly vulnerable to climate change because they are restricted to inland waters and cannot readily disperse ...
Karen L. Auzier Guimarães, Sarah J. do Nascimento Andrade, Luís R. Ribeiro Rodrigues   +2 more
wiley   +1 more source

The GFDL‐CM4X Climate Model Hierarchy, Part I: Model Description and Thermal Properties

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.
Abstract We present the GFDL‐CM4X (Geophysical Fluid Dynamics Laboratory Climate Model version 4X) coupled climate model hierarchy. The primary application for CM4X is to investigate ocean and sea ice physics as part of a realistic coupled Earth climate model.
Stephen M. Griffies, Alistair Adcroft, Rebecca L. Beadling, Mitchell Bushuk, Chiung‐Yin Chang, Henri F. Drake, Raphael Dussin, Robert W. Hallberg, William J. Hurlin, Hemant Khatri, John P. Krasting, Matthew Lobo, Graeme A. MacGilchrist, Brandon G. Reichl, Aakash Sane, Olga Sergienko, Maike Sonnewald, Jacob M. Steinberg, Jan‐Erik Tesdal, Matthew Thomas, Katherine E. Turner, Marshall L. Ward, Michael Winton, Niki Zadeh, Laure Zanna, Rong Zhang, Wenda Zhang, Ming Zhao   +27 more
wiley   +1 more source

Therapeutic effectiveness of three commercial anthelmintics against strongylids in buffalo calves (Bubalus bubalis)

Revista Científica, 2023
Gastrointestinal parasites and their control in buffaloes (Bubalus bubalis) represent increasing production costs. To improve sanitary plans in buffalo herds, experimental field re-search was carried out to evaluate the efficacy of three commercial ...
David Uzcátegui, Víctor Gutiérrez, María Rodríguez, Andrea González, Alfredo Sánchez   +4 more
doaj   +1 more source

Comparing Cloud Mask Products for Seagrass Mapping Over Sentinel‐2 Imagery: Toward a First National Seagrass Map for Venezuela

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 2, June 2025.
Abstract Despite providing many valuable ecosystem services, seagrasses are a threatened habitat and their global distribution is not fully known. For example, Venezuela lacks a national seagrass map. An established regional mapping approach for seagrass exists for the Google Earth Engine (GEE) platform, but requires a long time window to obtain ...
Chengfa Benjamin Lee, Ana Carolina Peralta Brichtova, Mar Roca, Tylar Murray, Oswaldo David Bolivar Rodriguez, Daniele Cerra, Frank E. Muller‐Karger   +6 more
wiley   +1 more source

Spatiotemporal variations of aquatic vegetation in Maracaibo Lake: Remote sensing and machine learning approach with Google Earth Engine

Egyptian Journal of Remote Sensing and Space Sciences
Aquatic plant invasions endanger lake biodiversity and ecosystem services, resulting in significant economic losses for local communities. Therefore, it is crucial to accurately delineate the extent and frequency of development, but traditional methods ...
Karen Escalona, Rodrigo Abarca-del-Río, María Pedreros-Guarda, Oscar Parra   +3 more
doaj   +1 more source