Listar Ciencias básicas por título
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Variación estacional y características fisicoquímicas e hidrológicas que influyen en los macroinvertebrados acuáticos, en un río tropical
(2020)Introducción: La distribución de los macroinver tebrados acuáticos en los ríos puede estar determinada por el tipo del sustrato, la forma del canal del río, el régimen hidrológico y las interacciones con factores ... -
Variación Genética del mono congo (Alouatta palliata), del mono colorado (Ateles geofroyi), del mono tití (Saimiri oerstedii) y del mono cara blanca (Cebus capucinus) de Costa Rica: implicaciones para la conservación de las especies.
(2011-06-16)El objetivo de este estudio es caracterizar la variación genética de las cuatro especies de primates de Costa Rica, usando loci de micro satélites (ms) y del complejo mayor de histocompatibilidad (mhc). Estos resultados ... -
Variación geográfica y posibles mecanismos de evolución cultural en Microcerculus philomela
(2013)Investigué la variación del canto en una escala microgeográfica en Microcerculus philomela. Esta ave tiene un repertorio de canto único aunque de alta complejidad por tener una gran cantidad de notas de tono puro realizadas ... -
Variación interanual de la temperatura en Costa Rica
(1996)An analysis of the inter-annual variations of the maximum temperature, minimum temperature, diurnal range of temperature (DRT), and average temperature is made, utilizing 23 stations representative of the different regions ... -
Variación mensual y anual de la riqueza y abundancia de aves en un mosaico agrícola periurbano tropical
(2019)Species richness inside agricultural landscape has been studied intensively and according to the type of landscape structure. However, the species phenology inside the mostly agricultural landscape is poorly understood. ... -
Variación temporal ecológica de playas de arena según diferente nivel de conservación en la zona del Parque Nacional Manuel Antonio, Costa Rica
(2021)Este proyecto busca generar información ecológica de las poblaciones de invertebrados y los factores ambientales que se dan en las playas arenosas del Parque Nacional Manuel Antonio y playa Espadilla. Se eligió este Parque ... -
Variación temporal ecológica de playas de arena según diferente nivel de conservación en la zona del Parque Nacional Manuel Antonio, Costa Rica
(2022-12-06)Este documento es el informe de investigación para ACOPAC de SINAC correspondiente al muestreo ecológico de 4 playas de arena durante el año 2021. Se muestra como la playa Espadilla Norte ubicada afuera del Parque Nacional ... -
Variation and possible function of egg sac coloration in spiders
(2013)Coloration of the egg sacs of spiders varies widely to the human eye, both across and within taxonomic groups. These differences in coloration are expected with differences in the biology and ecology of different species. ... -
Variation in echolocation call frequencies in two species of free-tailed bats according to temperature and humidity
(2017)Bats can actively adjust their echolocation signals to specific habitats and tasks, yet it is not known if bats also modify their calls to decrease atmospheric attenuation. Here the authors test the hypothesis that individuals ... -
Variation in the intermittent buzzing songs of male medflies (diptera: tephritidae) associated with geography, mass-rearing, and courtship success
(Florida Entomologist 85(1) March 2002, 2002-03)Varios aspectos de los patrones temporales de los sonidos del zumbido intermitente producido durante el cortejo pre-copulatório de los machos de la mosca del Mediterráneo variaron entre moscas silvestres de Costa Rica, ... -
Variation in the whole mitogenome of reef-building Porites corals
(2016)The study of complete mitochondrial genomes (mitogenomes) revealed different gene rearrangements, highly variable markers, and delineated clades that have aided the understanding of the evolutionary history in corals. In ... -
Variation of bacterial communities along the vertical gradient in Lake Issyk Kul, Kyrgyzstan
(2021-02-04)We explored the diversity and community composition of bacteria along a vertical gradient in Lake Issyk Kul, Kyrgyzstan, one of the world's largest and deepest brackish lakes. We identified 4904 bacterial amplicon sequence ... -
Variation of the diet of the sea urchin (Diadema mexicanum (Diadematoida: Diadematidae)) according to its size in the Eastern Tropical Pacific
(2024-03)Introduction: The sea urchin Diadema mexicanum, due to its bioerosion activity, is considered of ecological importance. This phenomenon could negatively or positively affect coral reef ecosystems. The bioerosion process varies ... -
Variation of the geomagnetic field in Costa Rica during the total solar eclipse of July 11, 1991
(1993)Ground measurements of the geomagnetic field, during the total solar eclipse of July 11, 1991. were carried out at three sites in Costa Rica located within the eclipse´s path of totality. Near totality, there was a significant ... -
Variations of Hodge Structures of Rank Three k-Higgs Bundles and Moduli Spaces of Holomorphic Triples
(2020)There is an isomorphism between the moduli spaces of σ-stable holomorphic triples and some of the critical submanifolds of the moduli space of k-Higgs bundles of rank three, whose elements (E, ϕk ) correspond to variations ... -
Velocity‑vorticity‑pressure formulation for the Oseen problem with variable viscosity
(2021)We propose and analyse an augmented mixed finite element method for the Oseen equations written in terms of velocity, vorticity, and pressure with non-constant viscosity and homogeneous Dirichlet boundary condition for the ...