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Pollen classification based on geometrical, descriptors and colour features using decorrelation stretching method
(IFIP Advances in Information and Communication Technology, 2011-01)
Salvar la biodiversidad de la tierra para las generaciones futuras es una importante tarea global, donde el reconocimiento automático de especies de polen por medio de visión artificial representa un tema de alta prioridad. ...
Use of food and spatial resources by two frogs of the genus Dendropsophus (anura: Hylidae) from La Selva, Costa Rica
(Universidade de Sao Paulo, 2012-06)
Differences in the use of resources by similar species have been related to a reduction in the interspecific competition that allows coexistence. Also, other factors, such as high availability of resources in the environment, ...
Camelobaetidius guaycara, a new species of Baetidae (Ephemeroptera) from Costa Rica, Central America
(Magnolia Press, 2018-06-14)
The nymphs of a new species of Camelobaetidius (Ephemeroptera: Baetidae) possibly related to the South American species of this genus were found on the Atlantic and Pacific slopes of Costa Rica. Among other characteristics ...
Contrasting patterns of taxonomic, phylogenetic and functional variation along a Costa Rican altitudinal gradient in the plant family Melastomataceae
(Cambridge University Press, 2018)
The functional composition of plant communities in montane regions has been studied for decades, and most
recent analyses find that environmentally favourable landscapes at lower altitudes tend to be dominated by species ...
Dairy wastewater treatment by anaerobic fixed bed reactors from laboratory to pilot-scale plant: A case study in Costa Rica operating at ambient temperature
(Springer, 2013)
The effect of hydraulic retention time in a range from 1.0-5.5 days was evaluated in a laboratory scale anaerobic fixed bed reactor packed with a hybrid material composed of tire rubber and zeolite. Under
these conditions, ...
Distribución y densidad de dos especies de holoturoideos en la isla de Cubagua, Venezuela
(Universidad de Costa Rica, 2011)
Distribution and density of two holothurian species in Cubagua Island, Venezuela. Holothurian populations in the Caribbean have been significantly depleted in some areas, and others are still in danger to satisfy international ...
Chemical And Extractives Compatibility Of Empty Bunch Fruit Of Elaeis Guineensis, Leaves Of Ananas Cumosos And Tetrapak With Wood Used In Particleboards In Tropical Areas
(Universidad Nacional del Sur (UNS), 2015)
Tropical countries produce a great variety of lignocellulosic residues from small-area planted crops. Large amount of "Tetra Pak" package are also produced without any disposal treatment. In order to give solutions for ...
Diagnostic parameters of Northern blot hybridization technique for detection of citrus viroids in field-grown plants
(Academic Journals Inc., 2017)
Background and Objective: The identification and diagnosis of citrus viroids can be achieved by molecular techniques that directly detect
the presence of viroid genomes within infected plant RNA pools. Several studies ...
Método de estudio socioambiental para la ordenación del territorio en la Cordillera Alux de Guatemala
(Doctorado en Ciencias Naturales para el Desarrollo (DOCINADE), 2019)
La presente investigación se realizó en la Reserva Forestal Protectora de Manantiales Cordillera Alux en Guatemala y se trabajó con los poblados de Mixco, San Juan Sacatepéquez, San Lucas Sacatepéquez, San Pedro Sacatepéquez ...
Ecology and management of the invasive lionfish Pterois volitans/miles complex (Perciformes: Scorpaenidae) in Southern Costa Rica--
(Universidad Nacional (Costa Rica), 2015-03)
Invasive species alter ecosystem integrity and functioning and are considered one of the major threats
to biodiversity on a global scale. The indopacific lionfish (Pterois volitans [Linnaeus, 1758] / miles [Bennet,
1882] ...