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Mostrando ítems 1-10 de 1885
Características del nivel del mar en los litorales costarricenses
(Ciencia y Tecnología, 12(1-2): 117-131,1988 San José, Costa Rica, 1988)
La variación del nivel del mar en los litorales costarricenses es un argumento desconocido. Son escasos los estudios que sobre este tema se han realizado y cada vez es mayor la necesidad de entender no sólo la influencia ...
Synthesis of 2-hydroxy-3-substituted naphthoquinones using the Heck reaction
(2007-06)
An efficient Heck coupling of 2-hydroxy-3-iodo-naphthoquinone with a series of electron-deficient alkenes in aqueous solution has been accomplished. The method is characterized by simple conditions and facile work-up to ...
Bats mimic hymenopteran insect sounds to deter predators
(2022)
This study explores interspecific acoustic mimicry in mammals, particularly focusing on the greater mouse-eared bat (Myotis myotis) distress calls. These calls imitate stinging bee and wasp sounds, aiming to deter avian ...
Change in the composition of fauna associated with Pocillopora spp. (Scleractinia, Pocilloporidae) following transplantation
(2023-04-30)
Introduction: Associated fauna comprises most of the diversity of a coral reef and performs ecological functions
essential to the reef’s survival. Since Pocillopora corals harbor an important associated fauna, reef ...
Extreme Behavioral Adjustments by an Orb‐Web Spider to Restricted Spaces
(2012)
Adaptive flexibility in response to environmental variation is often advantageous and occurs in many types of traits in many species. Although the basic designs of the orb webs of a given species are relatively uniform, ...
Improved seasonal prediction skill of rainfall for the Primera season in Central America
(2017)
This study explores the predictive skill of seasonal rainfall characteristics for the first rainy (and planting) season, May–June, in Central America. Statistical predictive models were built using a Model Output Statistics ...
Análisis de riesgo de inundación por tsunamis en Puntarenas, Costa Rica
(2001-08)
El análisis de riesgo de inundación por tsunamis en Puntarenas, Costa Rica, revela la vulnerabilidad de la región ante sismos tsunamigénicos que pudiesen ocurrir frente al Golfo de Nicoya y en la zona de subducción de ...
Germinación de semillas de Crescentia alata (Bignoniaceae) en distintas condiciones de temperatura, luminosidad y almacenamiento
Seed germination of Crescentia alata (Bignoniaceae) at different temperatures, light conditions, and storage periods
(2019)
Crescentia alata (Bignoniaceae) es una especie arborescente de gran interés cultural y económico desde México hasta Costa Rica. Sin embargo, la protección de las poblaciones naturales y el establecimiento de plantaciones ...
External Morphology of Tagosodes orizicolus (Homoptera: Delphacidae) Revealed by Scanning Electron Microscopy
(2001)
A comprehensive analysis of the ultrastructure of the delphacid rice pest Tagosodes
orizicolus (Muir) was undertaken using scanning electron microscopy to resolve taxonomic problems in the distinction of females and nymphs ...
Shade tolerance within the context of the successional process in tropical rain forests
Tolerancia a la sombra en el contexto del proceso de sucesión en los bosques tropicales lluviosos
(2019)
Abstract: Shade tolerance (the capacity to survive and grow over long periods under shade) is a key component of plant fitness and the foundation of current theories of forest succession in tropical rain forests. It serves ...