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Mostrando ítems 1578-1597 de 1644
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Unraveling the whole story: An Ultraestructural study of the common bean "amachamiento" disease caused by Aphelencoides besseyi
(2019-07-21)Se identificó Aphelencoides besseyi como responsable del amachamiento del frijol -
Unusual records of waterbirds in Costa Rica: possible connection to El Niño 2015-2016
(2016)These records were reported during the winter migrations in 2015 and 2016; five of the six species were apparently migrating from their reproductive sites in North America to their wintering grounds on the Pacific coast ... -
Unveiling the Hidden Bat Diversity of a Neotropical Montane Forest
(2016-10)Mountain environments, characterized by high levels of endemism, are at risk of experiencing significant biodiversity loss due to current trends in global warming. While many acknowledge their importance and vulnerability, ... -
Updated checklist and analysis of completeness of the marine fish fauna of Isla del Coco, Pacific of Costa Rica
(2016)Isla del Coco, Costa Rica, is one of the five groups of oceanic islands of the Eastern Tropical Pacific (ETP), and is considered one of the most diverse. Since the mid-19th century, it has been the target of a number of ... -
Urban endoliths: incidental microbial communities occurring inside concrete
(2023-03-30)Concrete is now a prevalent type of synthetic rock, and its production and usage have major environmental implications. Yet, assessments of ordinary concrete have rarely considered that concrete itself is potential habitat ... -
Urban noise influences vocalization structure in the House Wren Troglodytes aedon
(2013)Urban habitats are noisy and constrain acoustic communication in birds. We analysed the effect of anthropogenic noise on the vocalization characteristics of House Wrens Troglodytes aedon at two sites with different noise ... -
Urbanization has opposite effects on the territory size of two passerine birds
(2020-04-28)Background: Urban expansion has been identified as one of the leading drivers of biodiversity change or loss. For birds, urbanization is specifically related to survival, breeding success, and territory size. Understanding ... -
Urbanization, habitat extension and spatial pattern, threaten a Costa Rican endemic bird
(2021)Introduction: Migration of people from rural environments to cities has accelerated urbanization and modified the landscape as well as the ecological processes and communities in these areas. The Costa Rican endemic Cabanis´s ... -
Uso de cámaras remotas submarinas para caracterizar ensamblajes de depredadores en ambientes remotos del Pacífico Este Tropical
(2022)Los grandes depredadores marinos son generalmente animales longevos de gran tamaño como mamíferos marinos, tiburones, rayas y grandes teleósteos que ocupan niveles superiores en la cadena trófica. Se caracterizan por tener ... -
Uso de la cianobacteria Nostoc muscorum como biofertilizante y sus efectos tanto en el desarrollo del frijol (Phaseolus vulgaris) como en las características del suelo en condiciones de invernadero
(2022-11-22)Nostoc muscorum es una cianobacteria filamentosa que presenta estructuras especializadas llamadas heterocistes, que le permite convertir el nitrógeno molecular atmosférico a formas disponibles como amonio. En entornos ... -
Uso de material artificial para la construcción de nidos de aves: potenciales consecuencias sobre el éxito reproductivo de Turdus grayi (Passeriformes: Turdidae)
(2020-07-29)El exponencial aumento en la población humana ha generado una rápida expansión de las zonas urbanas. El aumento en el área de las ciudades produce que algunas especies entren en contacto directo con nuevos recursos ... -
Uso de una estructura artificial como granero por parte de Melanerpes formicivorus
(2016-12-31)Los graneros son estructuras naturales o artificiales que utilizan varias especies de aves de las familias Picidae, Corvidae y Paridae para almacenar alimento. El carpintero Melanerpes formicivorus construye y utiliza ... -
Über die erfolgreiche Verbreitung von Oeceoclades maculata in Costa Rica
(2012)This article informs about the successful conquest of Costa Rica by the African terrestrial orchid Oeceoclades maculata, which has even invaded some national parks of this Central American country, for the most part in the ... -
Validation of a methodology by LC-MS/MS for the determination of triazine, triazole and organophosphate pesticide residues in biopurification systems
(2020)Biopurification systems are useful in the management of pesticide residues and provide an option to dispose wastewaters of agricultural origin derived from pesticide application practices. The analysis of pesticide residues ... -
Vanilla distribution modeling for conservation and sustainable cultivation in a joint land sparing/sharing concept
(2020-03)Vanilla, an expensive but popular spice used in many industries, faces problems related to its supply. Some of these problems are due to the fact that vanilla cultivation is based on clonal material of a single species ... -
Vanilla Mill.
(2022)Vanilla Mill. is one of the few truly Pantropical genera in the Orchidaceae. We currently recognize 120 species worldwide, with independent centers of diversity in the Neotropics (with 62 species), China, India and South ... -
Variabilidad genética de la avifauna de las tierras altas de Costa Rica: Consecuencias del calentamiento global.
(2011-07-09)Determinar la susceptibilidad de un grupo de aves pertenecientes a diferentes líneas evolutivas (e.g.trochilidae, tyrannidae, emberizidae) a los cambios ambientes que pueden ocurrir como consecuencia del incremento en la ...