Facultad de Ciencias de la Tierra y el Mar
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Recent Submissions
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Risk assessment of agriculture impact on the Frío River watershed and Caño Negro Ramsar wetland, Costa Rica
(Springer, 2017-01-10)The Caño Negro Ramsar wetland is a conservation area of great natural and societal value, located in the lower part of the Frío River watershed in the north of Costa Rica. Its aquatic ecosystems may be considered vulnerable ... -
Work and health in Latin America: Results from the working conditions surveys of Colombia, Argentina, Chile, Central America and Uruguay
(BMJ Journals, 2017-01-16)Objective To describe working and employment conditions, and health status between non-agricultural employees with a written contract from Colombia, Argentina, Chile, Central America and Uruguay. Methods We compared data ... -
Molecular characterization and distribution of the needle nematode Longidorus laevicapitatus Williams, 1959 (Nematoda: Longidoridae) in Costa Rica
(Springer, 2016-06-25)Correct identification of Longidorus species in Costa Rica is essential to establish appropriate control strategies for preventing the spread of these nematodes. Nematode surveys conducted in the rainy seasons from 2013 ... -
A botanical extract of Souroubea sympetala and its active principle, betulinic acid, attenuate the cortisol response to a stressor in rainbow trout, Oncorhynchus mykiss
(Elsevier, 2016-09-28)The capacity of the traditional anxiolytic plant, Souroubea sympetala, and its bioactive principle, betulinic acid (BA), to lower cortisol levels in rainbow trout, Oncorhynchus mykiss, was investigated. Effects at the level ... -
A new vanilla species from Costa Rica closely related to V. planifolia (Orchidaceae)
(European Journal of Taxonomy, 2017-02-22)We describe a new vanilla species growing in sympatry with Vanilla planifolia Jacks. ex Andrews (Orchidaceae) in the province of Limón, Caribbean coast of Costa Rica. The morphology of the reproductive and vegetative organs ... -
Partial or total replacement of commercial concentrate with on-farm-grown mulberry forage: effects on lamb growth and feeding costs
(Springer Nature, 2017-01-23)Replacing commercial concentrate with mulberry foliage was evaluated in a feeding trial lasting 126 days. Forty-eight weaned male Pelibuey lambs (20.6 ± 0.80 kg of BW) were randomly allocated to four groups: (1) supplementing ... -
Blown by the wind: the ecology of male courtship display behavior in orchid bees
(Ecological Society of America, 2017-02-01)Many insects rely on chemical signals to transmit precise information on the location, identity, and quality of potential mates. Chemical signals are often broadcasted at sites with physical properties that maximize signal ... -
Informal employment and health status in Central America
(Springer Nature, 2015-07-24)Background: Informal employment is assumed to be an important but seldom studied social determinant of health, affecting a large number of workers around the world. Although informal employment arrangements constitute a ... -
Occurrence and fate of illicit drugs and pharmaceuticals in wastewater from two wastewater treatment plants in Costa Rica
(Elsevier, 2017-04-26)Chemical analysis of raw wastewater in order to assess the presence of biological markers entering a wastewater treatment plant can provide objective information about the health and lifestyle of the population connected ... -
Caesarean delivery and risk of childhood leukaemia: a pooled analysis from the Childhood Leukemia International Consortium (CLIC)
(The Lancet, 2016-04-07)Results from case-control studies have shown an increased risk of acute lymphoblastic leukaemia (ALL) in young children born by caesarean delivery, and prelabour caesarean delivery in particular; however, an association ... -
Root-lesion nematodes of the genus Pratylenchus (Nematoda: Pratylenchidae) from Costa Rica with molecular identification of P. gutierrezi and P. panamaensis topotypes
(Springer, 2016-02-17)Root-lesion nematodes of the genus Pratylenchus are among the most damaging nematodes for crop and ornamental plants worldwide. There are about 75 described species in this genus with a wide host range, but a difficult ... -
Uso de la tierra Microcuenca río Bermúdez, 2000, 2015, 2018, 2019
(Universidad Nacional, Costa Rica, 2020-03)Mapa de uso de la tierra de la tierra, microcuenca del río Bermúdez durante los años 2000, 2015, 2018 y 2019. Proyección: CRTM05, Datum: WGS84, Fuente: imágenes satelitales Landsat-ECG -
Fine-Tuning the Seismic Potential of the Nicoya Gap in NW Costa Rica
(American Geophysical Union, 2007-05-22)The Nicoya seismic gap is a subduction segment along the Middle American Trench where the Cocos plate subducts under the Caribbean plate. This seismic gap, located under the Nicoya Peninsula in northwestern Costa Rica, has ... -
Middle to Late Miocene Contractional Deformation in Costa Rica Triggered by Plate Geodynamics
(AGU Publications, 2017-12-11)Contractional deformation in Costa Rica is usually attributed to the subduction of the aseismic Cocos Ridge. In this work, we review the evidences for contraction in the middle to late Miocene, prior to the arrival of the ... -
OVSICORI's Southern Costa Rica Geodynamic Control Network: The opening of a Pandora's Box
(IASPEI, 2016-06-20)Summary of the presentation “OVSICORI's South Costa Rica Geodynamic Control Network: Opening a Pandora's box. Presented at II General Assembly of the Latin America and Caribbean Seismological Commission of IASPEI, Heredia, ... -
Evaluación de los factores bióticos y abióticos asociados a la depredación de tortuga lora (Lepidochelys olivacea) y verde (Chelonia mydas) por jaguar (Panthera onca) en diferentes playas de anidación del Parque Nacional Santa Rosa, Costa Rica
(Universidad Nacional, Costa Rica, 2020-11-07)Se realizó un análisis de los factores asociados a actividades y anidación de tortugas marinas en las playas Nancite y playa Naranjo del Parque Nacional Santa Rosa (PNSR), para comprender cuáles factores afectan en mayor ... -
Relación entre la presencia de equinos de trabajo (Equus caballus) y la distribución espacial y temporal del venado cola blanca (odocoileus virginianus) en el Parque Nacional Santa Rosa
(Universidad Nacional, Costa Rica, 2020-10)Los caballos (Equus caballus) han sido grandes aliados en la restauración del bosque seco del Parque Nacional Santa Rosa (PNSR), ubicado en el pacífico norte de Costa Rica, al ser usados como agentes dispersores de ... -
Ley Reguladora de Investigación Biomédica (9234): valoración de los alcances desde el Comité Ético Científico de la Universidad Nacional
(Universidad Nacional y Universidad de Costa Rica, 2019-03-01)Los Comités Éticos Científicos (CEC) de Costa Rica, a partir de la aprobación de la Ley Reguladora de Investigación Biomédica N°9234 (2014), implementaron modificaciones en los reglamentos para garantizar la aplicación de ... -
Ecological corridors in Costa Rica: An evaluation applying landscape structure, fragmentation-connectivity process, and climate adaptation
(Society for Conservation Biology, 2021-05-20)In recent years, ecological corridors have been proposed on a global scale as a response to the accelerated process of natural ecosystem fragmentation, mainly as a result of human impact. In accordance with this trend, ... -
Prenatal pesticide exposure and respiratory health outcomes in the first year of life: Results from the infants’ Environmental Health (ISA) study
(Universidad Nacional, Costa Rica, 2020-01-29)Background: Growing evidence suggests that pesticide exposure may influence respiratory health, but data in young children are very limited. We examined the association of prenatal pesticide exposure with lower respiratory ...
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