Browsing Facultad de Ciencias de la Tierra y el Mar by Title
Now showing items 211-230 of 1067
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Conformación de líneas promisorias de mutantes de arroz (Oryza sativa var. CR-5272) con tolerancia a condiciones de sequía en una población M2 obtenida por irradiación gamma
(Universidad Nacional, Costa Rica, 2020)El objetivo de esta investigación fue el de obtener plantas de arroz tolerantes al estrés hídrico a partir de una población segregante M2 de la variedad CR-5272 generada por irradiación gamma cobalto 60 (Co60). El estudio ... -
Consejos para el trabajo en la recolección
(SALTRA / IRET-UNA, 2010) -
Consensus on Criteria for Potential Areas for Wolf Reintroduction in Mexico
(Conservation Biology, 2012-07-19)Given the conflict with human interests that in many cases results in the extirpation of large carnivores, acceptance of their reintroduction is a considerable challenge. By the 1980s Mexican wolves (Canis lupus) were ... -
El consentimiento informado en los estudios de investigación clínica en Costa Rica
(Universidad Nacional (Costa Rica). Escuela de Filosofía., 2013)Analiza la realidad del proceso del derecho a una decisión libre informada y reflexiva, PACI (proceso de administración del consentimiento informado); a través de estudios de investigación clínica que tienen como fin la ... -
Conservation value of dispersed tree cover threatened by pasture management
(Universidad Nacional, Costa Rica, 2011)Trees dispersed in pastures are a prominent feature of many Central American landscapes, particularly in cattle producing regions where farmers retain trees to serve as shade, fodder, timber and firewood. The presence of ... -
Consideration of the seismic hazard on the land use planning of the Poas Canton, Costa Rica
(Boletin de Geologia, 2016-07-03)To incorporate the seismic hazard assessment in the land use planning can be done using seismic methods and Geographic Information System (GIS), in order to avoid the use of simplifications provided in law. In this paper, ... -
Consistency in bird use of tree cover across tropical agricultural landscapes
(Ecological Applications, 2014-01-01)In tropical regions where forests have been replaced by agriculture, the future of biodiversity is increasingly dependent on the presence of remnant forest patches and on-farm tree cover within agricultural landscapes. ... -
Constraints on inner forearc deformation from balanced cross sections, Fila Costen˜ a thrust belt, Costa Rica
(American Geophysical Union, 2007-12-21)The Fila Costeña thrust belt in the forearc of Costa Rica is accommodating a significant portion of the convergence of the Cocos plate and Panama microplate. Geologic mapping of the thrust belt depicts a duplex with three ... -
Constraints on the sulfur subduction cycle in Central America from sulfur isotope compositions of volcanic gases
(European Association of Geochemistry, 2022-01-20)The sulfur cycle at convergent margins remains poorly constrained yet is fundamentally important for understanding the redox state of Earth's reservoirs and the formation of ore deposits. In this study we investigate the ... -
Constraints on upper mantle anisotropy surrounding the Cocos slab from SK(K)S splitting
(American Geophysical Union, 2010-06-24)SKS and SKKS splitting observations are used to constrain the pattern of mantle flow in the Central American subduction zone beneath Costa Rica and Nicaragua. After removing the effects of shallow wedge anisotropy on ... -
Construcción de lineamientos para la localización de terrenos en el área metropolitana de Heredia, dirigidos a la solución de vivienda social, para la población de los asentamientos informales de Guararí
(Universidad Nacional, Costa Rica, 2023)Los asentamientos informales son una problemática que afronta Costa Rica desde el siglo XX; sin embargo, el Estado ha utilizado muy pocas variables socioespaciales y priorizado los materiales y costos de la vivienda. Este ... -
El consumo de madera local en Costa Rica
(Universidad Nacional (Costa Rica). Escuela de Ciencias Ambientales, 2017)El uso de la madera local en Costa Rica ha venido en descenso durante los últimos 10 años. Por esta razón, este estudio se enfoca en el análisis de los principales aspectos que inciden en el consumo de este material en ... -
Consumo y calidad nutricional de la dieta ofrecida al hato caprino de la Finca Experimental Santa Lucía
(Universidad Nacional (Costa Rica). Escuela de Ciencias Agrarias, 2017)Diagnostica el manejo alimenticio del hato caprino del Programa Producción Sostenible de Rumiantes Menores (PPSRM), Finca Experimental Santa Lucía, en Barva de Heredia, mediante el desarrollo de una matriz de indicadores ... -
Consumption of wild rice (Oryza latifolia) by free-ranging jaguars, pumas, and ocelots (Carnivora-Felidae) in northwestern Costa Rica
(Elsevier Inc., 2020-03)There is limited information about plant consumption by felid species, yet anecdotal evidence suggests that plants and grass are a complementary component in the diet of domestic and wild carnivores. We report opportunistic ... -
Contexts and patterns of injuries in free-ranging male baboons (Papio Cynocephalus)
(Universidad Nacional, Costa Rica, 1996)Injury in male baboons (Papio cynocephalus) was investigated as an indicator of damaging fights in order to provide a framework for analyses of conflict resolution and dynamics of agonistic competition in primates. The ... -
Contribution of live fences to the ecological integrity of agricultural landscapes
(Universidad Nacional, Costa Rica., 2005-08-16)Live fences are conspicuous features of agricultural landscapes across Central America but there is remarkably little information about their abundance, distribution, and function. Here we present a detailed analysis of: ... -
Control alternativo del ácaro Varroa destructor en abejas africanizadas en Costa Rica.
(Universidad Nacional, Costa Rica, 2018)