Facultad de Ciencias de la Tierra y el Mar
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Jaguars (Panthera onca) increase kill utilization rates and share prey in response to seasonal fluctuations in nesting green turtle (Chelonia mydas mydas) abundance in Tortuguero National Park, Costa Rica
(Mammalian Biology, 2015-03)Jaguar (. Panthera onca) predation of green turtles (. Chelonia mydas mydas) is now a common occurrence in Tortuguero National Park, Costa Rica. The abundance of green turtles during nesting season ensures a constant ... -
The big free-tailed bat, Nyctinomops macrotis (Gray, 1839), in central America [El murciélago grande de cola libre, Nyctinomops macrotis (Gray, 1839), en Centro América]
(Mastozoologia Neotropical, 2016-12)The big free-tailed bat, Nyctinomops macrotis, is a large molossid with a discontinuous distribution in the southwestern United States and most of Mexico (northern range), and northern South America (southern range). In ... -
Inter-trophic food provisioning between sea and land: The jaguar (panthera onca) as provider of sea turtle carcasses to terrestrial scavengers
(International Journal of Conservation Science, 2017-07-10)A more complete perspective of carrion use by terrestrial vertebrates and about the role of predators in net carrion supply will improve our understanding of critical ecological processes, particularly those associated ... -
Scavenging on sea turtle carcasses by multiple jaguars in northwestern Costa Rica
(Therya, 2016)Information on scavenging by jaguars is scarce, dispersed and little documented in the scientific literature, producing a shallow understanding of this phenomenon. Therefore, the aim of this paper is to describe the behavior ... -
Factors affecting Jaguar and Puma predation on livestock in Costa Rica
(Wildlife Biology in Practice, 2016-06)Throughout their range, wild felids in the Americas prey on livestock and this sometimes leads to retaliatory killing. Recently, conservation and research programs focused on such conflicts have recommended mitigation and ... -
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 ... -
Assessing species traits and landscape relationships of the mammalian carnivore community in a neotropical biological corridor
(Biodiversity and Conservation, 2016-04-06)Mammalian carnivores play an important role in regulating food webs and ecosystems. While many carnivore populations are facing various threats such as habitat loss and fragmentation, poaching, and illegal trade, others ... -
Serosurvey of selected arboviral pathogens in freeranging, two-toed sloths (Choloepus hoffmanni) and three-toed sloths (Bradypus variegatus) in Costa Rica, 2005–07
(Journal of Wildlife Diseases, 2016-10-01)We screened for antibodies to 16 arboviruses in four populations of free-ranging sloths in Costa Rica. Blood samples were taken from 16 Hoffman's two-toed sloths (HTSs; Choloepus hoffmanni) and 26 brown-throated sloths ... -
Influence of human activities on some medium and large-sized mammals’ richness and abundance in the Lacandon Rainforest
(Journal for Nature Conservation, 2016-12)We evaluated the influence of six human activities (related variables) on the richness and abundance of large and medium-sized mammals in the southern portion of the Lacandon Rainforest, including protected and non-protected ... -
Distribution and hotspots of the feeding areas of jaguars on sea turtles at a national park in Costa Rica [Distribuição e pontos de concentração de áreas de predação de tartarugas marinhas por onças pintadas em parque nacional da Costa Rica]
(Neotropical Biology and Conservation, 2017)A poorly described aspect of the trophic relation between sea turtles and jaguars is the distribution and hotspots of the feeding areas of jaguars on the nesting beaches. It is very important to identify the areas where ... -
Extraction of hermit crabs from their shells by white-faced capuchin monkeys (Cebus capucinus)
(Primates, 2016-09-28)We observed two capuchin monkeys (Cebus capucinus) feeding on hermit crabs (Coenobita compressus) on the coast, and the tactics they used to extract this well-protected prey. The observations took place during the dry ... -
Population status of terrestrial mammals’ in two protected areas in the west central region of Costa Rica [Estado poblacional de mamíferos terrestres en dos áreas protegidas de la región central occidental de Costa Rica]
(Revista de Biología Tropical, 2017-11-16)In the West Central Region of Costa Rica, there are plenty of forests under public and private protection; however, they are increasingly exposed to fragmentation. This is the first report about species richness and the ... -
La meliponicultura como oportunidad de desarrollo local: el caso del grupo de mujeres meliponicultoras en Platanares de Pérez Zeledón y AMACOBAS
(XI Congreso Mesoamericano sobre Abejas Nativas, Puebla, México, 2019)El CINAT-UNA sistematiza el proceso vivido con grupos de mujeres meliponicultoras en la zona de Pérez Zeledón, con distintos puntos de partida y marcadas diferencias en cuanto al nivel de asociatividad y conocimiento técnico ... -
UNA PROPUESTA PARA MITIGAR LOS ATROPELLAMENTOS DE FUANA SILVESTRE EN CAREETERAS DE MESOAMERICA
(Universidad de Antioquia, 2019)UNA PROPUESTA PARA MITIGAR LOS ATROPELLAMENTOS DE FUANA SILVESTRE EN CARRETERAS DE MESOAMERICA Joel C. Sáenz, Instituto Internacional en Conservación y Manejo de Vida Silvestre, Universidad Nacional. Apo. 1350-3000, ... -
Uso de Ciencia Ciudadana para Determinar Factores de Mortalidad en sitios de Atropellamiento del oso hormiguero (Tamandua mexicana) en carreteras de Costa
(Uinversida de Antioquia, Colombia, 2019)EL USO DE CIENCIA CIUDADANA PARA DETERMINAR FACTORES DE MORTALIDAD EN SITIOS DE ATROPELLAMIENTO DEL OSO HORMIGUERO (Tamandua mexicana) EN CARRETERAS DE COSTA RICA Joel C. Sáenz, Gutíerrez, Diego. Instituto Internacional ... -
Representaciones espaciales: de la imaginación geográfica al espacio vivido
(Universidad Nacional (Costa Rica). Consejo Central de Posgrado. Facultad de Ciencias Sociales, 2019)Indaga sobre las representaciones del espacio concebido y vivido, así como las prácticas socioespaciales de la juventud herediana, para comprender las transformaciones urbanas inducidas en el contexto del capitalismo ... -
Vainilla en Costa Rica: de la siembra al cultivo
(Universidad Nacional, Costa Rica. Facultad de Ciencias de la Tierra y el Mar. INISEFOR, 2019-10-26)La vainilla califica como un producto no maderable del bosque. Cuando los precios internacionales se elevaron, y la producción mundial disminuyó, los compradores volvieron los ojos a este pequeño país. Se iniciaron estudios ... -
Dinámica y estructura en ecosistemas forestales y su aporte al ciclo de carbono en la Península de Osa, Costa Rica
(Universidad de Salamanca. Departamento de biología animal, parasitología, ecología, edafología y química agrícola, 2019)Caracteriza la dinámica de ecosistemas de formaciones forestales en función de la diversidad florística, estructura forestal, los cambios espacio-temporales y el rol del carbono contenido en la biomasa, necromasa y suelos, ... -
Distribuciones de los estadísticos y estimadores paramétricos de la Regresión Ancestral bajo apareamiento aleatorio y selección
(Universidad de Buenos Aires. Facultad de Agronomía., 2019)El objetivo de esta tesis fue estimar mediante simulación estocástica las distribuciones de probabilidad de: a) los parámetros del modelo AR (βS, βD), b) las relaciones realizadas de identidad por descendencia (IBD) entre ... -
Efectos de los plaguicidas clorotalonil y β-Endosulfan en renacuajos de Agalychnis callidryas, Isthmohyla pseudopuma y Smilisca baudinii (Anura: Hylidae)
(Universidad Nacional (Costa Rica). Instituto Regional de Estudios en Sustancias Tóxicas. Maestría en Ecotoxicología Tropical, 2017)Evalúa los efectos agudos y crónicos en renacuajos de Agalychnis callidryas, Isthmohyla pseudopuma y Smilisca baudinii expuestos al clorotalonil y en I. pseudopuma expuestos al β-endosulfan, en condiciones de laboratorio, ...
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