Facultad de Ciencias de la Tierra y el Mar
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Recent Submissions
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Anxiolytic activity and active principles of Piper amalago (Piperaceae), a medicinal plant used by the Q’eqchi’ Maya to treat susto, a culture-bound illness
(Elsevier, 2016-06-05)Ethnopharmacological relevance The medicinal plant, Piper amalago L. (Piperaceae), is used traditionally by Q'eqchi' Maya healers for the treatment of "susto" a culture-bound syndrome. Previous research suggests that susto ... -
Turmoil at Turrialba Volcano (Costa Rica): Degassing and eruptive processes inferred from high-frequency gas monitoring
(Wiley, 2016-08-28)Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest ... -
New Bruce-ladder multiplex PCR assay for the biovar typing of Brucella suis and the discrimination of Brucella suis and Brucella canis
(Revista de Microbiología Veterinaria, 2011-06-28)Rapid and specific identification of Brucella suis at the biovar level is necessary because some of the biovars that infect animals are pathogenic for humans. None of the molecular typing methods described so far are ... -
Fricke and polymer gel 2D dosimetry validation using Monte Carlo simulation
(Radiation Measurements, 2016-08)Complexity in modern radiotherapy treatments demands advanced dosimetry systems for quality control. These systems must have several characteristics, such as high spatial resolution, tissue equivalence, three-dimensional ... -
Micromorfología de los foliolos de pejibaye Bactris gasipaes (Arecaceae) var. Diamantes-10
(Universidad de Costa Rica, 2016-07-01)Bactris gasipaes is widely cultivated for the consumption of palm hearts and fruits. The present work describes the micro morphological characteristics of leaflets from adult plants of B. gasipaes, thornless ... -
Perlidae (Plecoptera) como modelo en estudios ecotoxicológicos: el caso del insecticida Carbaril
(Universidad Nacional, Costa Rica, 2020)En América Central, el uso de insectos acuáticos nativos en los estudios ecotoxicológicos ha sido un campo de investigación poco desarrollado, debido a la escasa información sobre la descripción taxonómica de las ... -
Exposure to common-use pesticides, manganese, lead, and thyroidfunction among pregnant women from the Infants' EnvironmentalHealth (ISA) study, Costa Rica
(Elsevier, 2021-10-28)Background:Pesticides and metals may disrupt thyroid function, which is key to fetal brain development.Objectives:To evaluate if current-use pesticide exposures, lead and excess manganese alter free thyroxine (FT4),freet ... -
Precipitous decline of white-lipped peccary populations in Mesoamerica
(Elsevier Ltd, 2020-02)Large mammalian herbivores are experiencing population reductions and range declines. However, we lack regional knowledge of population status for many herbivores, particularly in developing countries. Addressing this ... -
Reproduction of white-tailed deer in a seasonally dry tropical forest of Costa Rica: A test of aseasonality
(Oxford University Press, 2020-02-21)The reproductive season of white-tailed deer (Odocoileus virginianus) has been hypothesized to be aseasonal south of about 14°–18°N latitude, where annual variation in day length is low. We tested this idea by using camera-trap ... -
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 ... -
Pesticides Burden in Neotropical Rivers: Costa Rica as a Case Study
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-11-29)Neotropical ecosystems are highly biodiverse; however, the excessive use of pesticides has polluted freshwaters, with deleterious effects on aquatic biota. This study aims to analyze concentrations of active ingredients ... -
Exposición ocupacional a plomo en agentes policiales que supervisan pruebas prácticas en polígonos de tiro en Costa Rica
(Universidad Nacional, Costa Rica, 2019)A pesar de que estudios alrededor del mundo han evidenciado que los polígonos de tiro constituyen centros de trabajo con altos niveles de exposición al plomo, pocos estudios en América Latina han examinado la exposición ... -
Importación de plaguicidas y peligros en salud en América Central durante el periodo 2005 - 2009
(Universidad Nacional, Costa Rica, 2015-07-01)Se analizaron datos de importación de plaguicidas agrícolas en América Central, para el quinquenio 2005-2009 para el monitoreo de peligros en salud. La metodología usada ya fue publicada para el análisis del quinquenio ... -
Caregiving and infants' neurodevelopment in rural Costa Rica: Results from the Infants’ Environmental Health Study (ISA)
(Elsevier, 2019-09)Early caregiving is one of the strongest influences on children's development, and among the most significant modifiable environmental factor. The aim of this study was to explore the association between quality of ... -
Wildlife diversity and relative abundance among a variety of adjacent protected areas in the northern Talamanca Mountains of Costa Rica
(MDPI AG, 2020-04-01)Protected areas are intended to achieve the long-term conservation of nature, but not all such areas are equal in their effectiveness because of their varying regulation of human activities. In Costa Rica, we assessed ... -
Development of nuclear SNP markers for Mahogany (Swietenia spp.)
(springer, 2020-08-12)Swietenia species are the most valuable American tropical timbers and have been heavily overexploited for decades. The three species are listed as either vulnerable or endangered by IUCN and are included on Appendix II ... -
Caracterización fisicoquímica de muestras de miel de Apis mellifera, comercializada en la zona occidental de la Gran Área Metropolitana (GAM) de Costa Rica
(Universidad Nacional, Costa Rica, 2021-08)Este estudio consistió en identificar y enlistar las marcas de miel de abeja oferentes a nivel de mercados centrales de la zona occidental de la Gran Área Metropolitana de Costa Rica, específicamente las ciudades de Alajuela, ... -
Potencial de la miel de Tetragonisca angustula y Scaptotrigona pectoralis para la formulación de un medicamento antibacteriano y cicatrizante de uso veterinario
(Universidad Nacional, Costa Rica, 2021-08)Actualmente, las infecciones causadas por cepas antibiótico resistentes de Staphylococcus sp. productoras de biofilms tienen elevada importancia clínica (Zamora et al, 2017). Esto se debe a la protección que les brinda la ... -
Especies botánicas de importancia alimenticia para la abeja nativa Melipona beecheii, en la zona de Atenas, Alajuela, Costa Rica
(Universidad Nacional, Costa Rica, 2021-08)Las abejas juegan un papel primordial en la dinámica de los ecosistemas, ya que al buscar recursos alimenticios en las flores, brindan servicios de polinización esenciales para la reproducción de las especies vegetales, ... -
Cantidad de alimento requerida por una colonia de Bombus ephippiatus durante las etapas de su desarrollo y el comportamiento de alimentación de las obreras jóvenes
(Universidad Nacional, Costa Rica, 2021-08)Costa Rica es un país con una diversidad de abejorros que en gran parte no ha sido estudiada. Estas abejas tienen mucho potencial para ser polinizadores de nuestros cultivos en vez de importar especies exóticas. Con el fin ...
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