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Now showing items 1041-1050 of 1251
Development of predictive models to explain the distribution of the West Indian manatee Trichechus manatus in tropical watercourses
(Universidad Nacional, Costa Rica., 2005-05-31)
Logistic regressions were used to study the relationship between habitat variables and the use of tropical watercourses by the
West Indian manatee Trichechus manatus at Northeastern Costa Rica and Southern Nicaragua. ...
Dieta estacional del Tayassu pecari (Artiodactyla: Tayassuidae) en el Parque Nacional Corcovado, Costa Rica
(Universidad Nacional, Costa Rica., 2000)
The diet of the white-lipped peccari Tayassu pecari was studied from July 1996 to April 1997 in Cor covado National Park, Costa Rica, through fecal analysis and direct observations. The feces consisted of 61.6%
fruits, ...
Biofertilizante del consorcio cianobacterias (trichormus sp.) y microalgas (scenedesnus sp.) en formulación liofilizada o biomasa húmeda, como sustituto parcial o total a la fertilización con nitrógeno en plántulas de tomate
(Universidad Nacional, Costa Rica, 2021)
Algunas cianobacterias y microalgas han sido estudiadas como una fuente de nitrógeno, nutriente primordial en la agricultura. En esta investigación se evaluó el aporte de nitrógeno de la cianobacterias (Trichormus sp.) y ...
Propuesta de mejora en los procedimientos poscosecha del banano de exportacion en el Grupo San Alberto, Siquirres, Costa Rica
(Universidad Nacional, Costa Rica, 2021)
La presente investigación fue realizada en las fincas pertenecientes al grupo San Alberto, localizadas en Siquirres provincia de Limón. Se realizó un análisis operativo de las empacadoras, para poder comparar las percepciones ...
A comparison of fruit removal in Ficus colubrinae between birds and Ectophylla alba (Chiroptera: Phyllostomidae) in a Costa Rican rain forest
(Taylor and Francis Ltd., 2021-02-02)
Ectophylla alba almost exclusively feeds on the fruits of Ficus colubrinae therefore significantly contributing to dispersal of its seeds. The objective of this research was to quantify the fruit removal of F. colubrinae ...
Analysis of the Interactions Between Humans and Crocodiles in Costa Rica
(Sociedade Brasileira de Herpetologia, 2020)
The habitat of crocodiles (Crocodylus acutus) and caimans (Caiman crocodilus) has been subjected to pressure due to human
expansion. Habitat reduction, coupled with the simultaneous growth of the crocodile population, ...
Investigación para la toma de decisiones de manejo en áreas marinas protegidas como la Isla del Coco, Costa Rica
(Universidad de Costa Rica, Costa Rica, 2020-03-20)
Introduction. Scientific information is often needed to guide management decisions, but marine protected areas usually lack such information. Further, these protected areas face the challenge of protecting ...
Vegetation, bird and soundscape characterization: a case study in Braulio Carrillo National Park, Costa Rica
(Instituto de investigación de recursos biológicos Alexander von humboldt, 2021)
We assessed the structural complexity of vegetation, birds and soundscapes in two areas of Braulio Carrillo National Park, Costa Rica, with different road exposure, as baseline information for conservation and management.
We ...
Composition and diversity of butterflies (Lepidoptera, Papilionoidea) along an atmospheric pollution gradient in the Monterrey Metropolitan Area, Mexico
(Pensoft Publishers, 2021)
This study compares the variation of richness, abundance and diversity of butterfly species along an atmospheric pollution gradient and during different seasons in the Monterrey Metropolitan Area, Mexico. Likewise, we ...
Influence of sea turtle nesting on hunting behavior and movements of jaguars in the dry forest of northwest Costa Rica
(Blackwell Publishing Ltd, 2020-11)
Jaguars (Panthera onca) are opportunistic predators that prey on large profitable prey
items, such as sea turtles at nesting beaches. Here, we use jaguar and sea turtle trackcount surveys, combined with satellite telemetry ...