Browsing Facultad de Ciencias de la Tierra y el Mar by Title
Now showing items 162-181 of 1081
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El cerdo cimarrón (Sus scrofa, Suidae) en la Isla del Coco, Costa Rica: Escarbaduras, alteraciones al suelo y erosión
(Universidad Nacional, Costa Rica., 2001)Feral pigs (Sus scrofa) are of the most damaging exotic vertebrates, specially on oceanic island nativecommunities. Feral pigs inhabit Cocos Island since 1793 and there are around 400-500 individuals. In order toquantify ... -
Cetáceos de las aguas costeras del Pacífico norte y sur de Costa Rica
(Universidad Nacional, Costa Rica., 2010)Cetáceos costeros del Pacífico Norte y Sur de Costa Rica. Veintinueve especies de cetáceos ocurren en aguas costarricenses pero sólo se han realizado investigaciones extensivas para tres especies. Esto último demuestra que ... -
Changes in land cover in coastal erosion hotspots in the southern Caribbean of Costa Rica during the period 2005-2017
(Universidad Nacional, Costa Rica, 2021-07-31)Studies conducted in recent years have warned us about the effects generated by changes in the coastline along the Southern Costa Rican Caribbean coast. The objective of this research is to evaluate this effect on land ... -
Characterization of attack events on sea turtles (chelonia mydas and lepidochelys olivacea) by jaguar (panthera onca) in naranjo sector, santa rosa national park, Costa Rica
(International Journal of Conservation Science, 2016-01)In this study, we examined sea turtles consumption by jaguars and their temporal and spatial distribution at Naranjo beach, Santa Rosa National Park Costa Rica. We include information about sea turtle consumption rate by ... -
Checklist of the vascular flora of Reserva Biológica San Luis, Costa Rica
(Pensoft, 2016-03-21)The Reserva Biológica San Luis is a small protected area located on the Pacific side of the Cordillera de Tilarán, northwestern Costa Rica, with a forest transitioning between the basal and premontane floras according to ... -
Chemical characterization of filterable PM2.5 emissions generated from regulated stationary sources in the Metropolitan Area of Costa Rica
(Elsevier, 2017-01-14)Filterable PM2.5 concentrations and their chemical characterizations were analyzed for 67 boilers and 25 indirect furnaces located in the Metropolitan Area of Costa Rica from February 2014 to November 2015. The PM2.5 samples ... -
Chemical composition of PM 2.5 particles in Salamanca, Guanajuato Mexico: Source apportionment with receptor models
(Science Direct, 2012-04)The National Institute of Ecology, through Management General for Environmental Research and Training (DGCENICA) carried out a sampling campaign where a total of 21 elements were determined in 140PM 2.5 samples from one ... -
Chlorine isotope and Cl–Br fractionation in fluids of Poás volcano (Costa Rica): Insight into an active volcanic–hydrothermal system
(Elsevier, 2016-10-01)Halogen-rich volcanic fluids issued at the surface carry information on properties and processes operating in shallow hydrothermal systems. This paper reports a long-term record of Cl–Br concentrations and δ37Cl signatures ... -
Chlorine isotope variations in the hyper-acid lake system of Poás volcano, Costa Rica
(International Association of Volcanology and Chemistry of the Earth's Interior, 2013-07)This study provides some datasets of the most salient geochemical signatures of the acid lake and their strongly uctuating behaviour observed over the last 30 years. -
CIAT Informa
(SALTRA / IRET-UNA, 2014-08-01)La salud ocupacional es un tema que nos incumbe a todos , pues esta relacionado con las actividades de trabajo que realizamos todos los días ya sea en la casa , en la empresa o en un campo abierto o en la calle -
Ciencia, tecnología y educación en Costa Rica en el período 2010-2014
(Universidad Nacional, Costa Rica, 2017-09-01)En este artículo se analizaron las distintas redes vinculadas a la formulación de políticas públicas en la Comisión de Ciencia y Tecnología del Congreso de Costa Rica, entre el 2010 y 2014, con el propósito de describir ... -
Citrus Huanglongbing Caused by Candidatus Liberibacter asiaticus Present in the Northern Region of Costa Rica but Has Not Extended to Other Citrus-Growing Areas
(American Phytopathological Society, 2015-10-16)Since 2011, citrus Huanglongbing (HLB, ex-greening) disease has been detected in Los Chiles, Costa Rica, close to the Nicaraguan border, by the State Phytosanitary Service (Servicio Fitosanitario del Estado; SFE) and by ... -
CKD of unknown origin in Central America: The case for a mesoamerican nephropathy
(National Kidney Foundation, 2014-01-13)An epidemic of chronic kidney disease of unknown origin has emerged in the last decade in Central America and has been named Mesoamerican nephropathy. This form of chronic kidney disease is present primarily in young male ... -
Classification of aquatic macroinvertebrates in flow categories for the adjustment of the LIFE Index to Costa Rican rivers
(Elsevier, 2020-08-26)The LIFE Index can be useful to determine the effect of changes in river flow on the community of aquatic macroinvertebrates and as a tool for the implementation of environmental flows. This study demonstrates how to ... -
Classification of neck/shoulder pain in epidemiological research: a comparison of personal and occupational characteristics, disability, and prognosis among 12,195 workers from 18 countries
(International Association for the Study of Pain, 2016)To inform case definition for neck/shoulder pain in epidemiological research, we compared levels of disability, patterns of association, and prognosis for pain that was limited to the neck or shoulders (LNSP) and more ... -
Clima urbano y variabilidad climática en la planificación urbana. Estudio de caso en los centros urbanos de Alajuela y Heredia, Costa Rica.
(Universidad Nacional, Costa Rica, 2018-12-04)Las ciudades en las regiones tropicales se expanden rápidamente y son objeto de impacto y consecuencias climáticas negativas, como la alteración de su microclima (calentamiento). Este proyecto busca analizar la interacción ... -
Climas de la Cuenca del Río Tuis, Costa Rica
(Escuela de Ciencias Geográficas, 1994) -
Climate Change, workplace heat exposure, and Occupational Health and productivity in Central America
(Universidad Nacional, Costa Rica, 2011)Climate change is increasing heat exposure in places such as Central America, a tropical region with generally hot/humid conditions. Working people are at particular risk of heat stress because of the intrabody heat ... -
Climate reverses directionality in the richness–abundance relationship across the World’s main forest biomes
(Nature Comunications, 2020-12-01)More tree species can increase the carbon storage capacity of forests (here referred to as the more species hypothesis) through increased tree productivity and tree abundance resulting from complementarity, but they can ... -
Climatic and edaphic controls over tropical forest diversity and vegetation carbon storage
(Springer Nature, 2020-03-19)Tropical rainforests harbor exceptionally high biodiversity and store large amounts of carbon in vegetation biomass. However, regional variation in plant species richness and vegetation carbon stock can be substantial, and ...