Browsing Facultad de Ciencias de la Tierra y el Mar by Title
Now showing items 550-569 of 1082
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Habitat features influencing jaguar Panthera onca (Carnivora: Felidae) occupancy in Tortuguero National Park, Costa Rica
(Universidad Nacional, Costa Rica., 2014)Habitat characteristics and human activities are known to play a major role in the occupancy of jag uars Panthera onca across their range, however the key variables influencing jaguar distribution in Tortuguero National ... -
Habitat features influencing jaguar Panthera onca (Carnivora: Felidae) occupancy in Tortuguero national park, Costa Rica [Características del hábitat que influyen en la presencia del jaguar Panthera onca (Carnivora: Felidae) en el parque nacional Tortuguero, Costa Rica]
(Revista de Biologia Tropical, 2014-08-13)Habitat characteristics and human activities are known to play a major role in the occupancy of jaguars Panthera onca across their range, however the key variables influencing jaguar distribution in Tortuguero National ... -
Halogen activation in the plume of Masaya volcano: field observations and box model investigations
(Atmospheric Chemistry and Physics, 2020)Volcanic emissions are a source of halogens to the atmosphere. Rapid reactions convert the initially emitted hydrogen halides (HCl, HBr, HI) into reactive species e.g. BrO, Br2, BrCl, ClO, OClO and IO. The activation ... -
Heat exposure in sugarcane harvesters in Costa Rica
(Wiley Periodicals, 2013)Background Occupational heat stress is a major concern in sugarcane production and has been hypothesized as a causal factor of a chronic kidney disease epidemic in Central America. This study described working conditions ... -
Heat exposure in sugarcane workers in Costa Rica during the non-harvest season
(Global Health Action, 2010)This observational pilot study was carried out at three sugarcane companies in Costa Rica. Its main objective was to determine the potential for heat stress conditions for workers in one sugarcane-growing region in Costa ... -
Heat-Related Symptoms in Sugarcane Harvesters
(Wiley, 2015-02-26)Background: Exposure to heat stress is a documented risk for Central American sugarcane harvesters. However, little is known about heat-related illness in this population. Methods: This study examined the frequency of ... -
Heavy poaching in prime habitat: the conservation status of the West Indian manatee in Nicaragua
(Universidad Nacional, Costa Rica., 2002)This study provides an overview of the conservation status of the West Indian manatee Trichechus manatus in Nicaragua, including data on habitat availability, manatee distribution and relative abundance, and current threats. ... -
Herpetofauna atropellada en la Carretera Interamericana Norte, Guanacaste, Costa Rica. : influencia de los atributos del paisaje en las muertes y medidas para su mitigación
(Universidad Nacional (Costa Rica). Instituto Internacional en Conservación y Manejo de Vida Silvestre. Maestría en Conservación y Manejo de Vida Silvestre, 2018)Determina la influencia de la Carretera Interamericana Norte en la mortalidad de herpetofauna de un sector del Área de Conservación Guanacaste. Se utilizan los anfibios y reptiles como objeto de muestreo, porque poseen una ... -
Herramienta metodológica para la vigilancia de la calidad de agua de mar en playas de uso recreativo de Costa Rica
(Universidad Nacional (Costa Rica). Escuela de Ciencias Ambientales, 2017)Diseño de una herramienta metodológica para la vigilancia de la calidad del agua de mar en playas recreativas de Costa Rica, que sirva como insumo para el establecimiento de una normativa a nivel nacional para la calidad ... -
Herramienta para la mejora de la gestión físico-sanitaria de 10 ASADAS de la región Pacífico Central de Costa Rica
(Universidad Nacional (Costa Rica). Escuela de Ciencias Ambientales, 2017)La presente investigación se realizó en 10 ASADAS de la región Pacífico Central de Costa Rica, desarrollándose un Protocolo de Cloración para la mejora de la gestión físicosanitaria de las mismas. Este Protocolo responde ... -
Herramientas GNSS en la enseñanza de Geografía y Cartografía: aspectos metodológicos
(Universidad Nacional, Costa Rica., 2018)El artículo presenta los principales aspectos metodológicos adquiridos a lo largo de los dos años de ejecución del proyecto “Aplicación de la herramienta GPS en la enseñanza de Cartografía”. Se describe la metodología ... -
Highly diversified coronaviruses in neotropical bats
(Journal of General Virology, 2013-09-01)Bats host a broad diversity of coronaviruses (CoVs), including close relatives of human pathogens. There is only limited data on neotropical bat CoVs. We analysed faecal, blood and intestine specimens from 1562 bats sampled ... -
Higiene en albergues y baches de trabajadores
(SALTRA / IRET-UNA, 2010) -
Historia eruptiva del volcán Turrialba y sus impactos
(Ambientico. Revista Mensual, 2015-06) -
Home range and activity pattems of Conepatus semistriatus (Carnivora, Mephitidae) in Emas National Park, Brazil
(Universidad Nacional, Costa Rica., 2014)The home range, habitat use, and distance from water sources were estimated for Basiliscus plumifrons in an agricultural matrix in Costa Rica. Using radio telemetry, four females and four males were studied from July-September ... -
Home range and activity patterns of Conepatus semistriatus (Carnivora, Mephitidae) in Emas National Park, Brazil
(Animal Biology, 2014-06-05)Skunks (Mephitidae) have not been well studied throughout the Neotropics. In Brazil there is a general lack of data on the ecology, behavior, distribution, systematics, morphology and biogeographic patterns of the two ... -
Home Range, Habitat Use, and Activity of Baird’s Tapir in Costa Rica
(Universidad Nacional, Costa Rica., 2002)Home range size, habitat utilization, and activity patterns of five adult Baird’s tapirs (Tapirus bairdii) were studied via radiotelemetry from June 1995 to May 1996 in Corcovado National Park, Costa Rica. Estimates of ... -
Homenaje Póstumo: TImo J. Partanen
(SALTRA / IRET-UNA, 2015-09-09) -
Hypoglycemic and antihyperglycemic effect of Witheringia solanacea in normal and alloxan-induced hyperglycemic rats
(Elsevier, 2011)Witheringia solanacea is a small shrub that belongs to the Solanaceae family. The plant is used as an antidiabetic in Costa Rican herbal medicine. The aim of this study was to evaluate the hypoglycemic and antihyperglycemic ... -
Identidades, proyectos de vida y participación comunitaria de los jóvenes en el Corregimiento de El Plateado, Municipio de Argelia Cauca, Colombia
(Universidad NAcional (Costa Rica). Escuela de Ciencias Agrarias, 2016)El siguiente documento tiene como propósito presentar los resultados de un ejercicio de investigación bajo el marco del TFG de la Maestría en Desarrollo Comunitario Sustentable de la Universidad Nacional de Costa Rica. ...