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Biomass dynamics of Erythrina lanceolata as influenced by shoot-pruning intensity in Costa Rica
(Springer, 2003)
Pruning of agroforestry trees, while reducing shade of the crops, usually reduces both biomass production and nitrogen fixation. Short pruning cycles are often not sustainable on the long run, because tree production ...
Free-living nematodes from nature reserves in Costa Rica. 4. Cephalobina
(Brill, 2003)
Four species of Cephalobina: Geraldius bakeri, Diastolaimus croca, Trualaimus culeatus and Tricirronema tentaculatum are described and illustrated on the basis of material collected in Costa Rica. A scanning electron ...
Constraints on inner forearc deformation from balanced cross sections, Fila Costen˜ a thrust belt, Costa Rica
(American Geophysical Union, 2007-12-21)
The Fila Costeña thrust belt in the forearc of Costa Rica is accommodating a significant portion of the convergence of the Cocos plate and Panama microplate. Geologic mapping of the thrust belt depicts a duplex with three ...
Fluid geochemistry and seismic activity in the period 1998-2002 at Turrialba Volcano: Costa Rica
(Universidad de Florencia, Italia, 2004)
Turrialba Volcano, located in Central-Southern Costa Rica, has been characterized, since the last period of eruptive activity in 1884-1886, by a weak and discontinuous fumarolic activity in the western area of its summit. ...
Cuatro compuestos nuevos del extracto no polar de la planta Amyris brenesii (Rutaceae) de Costa Rica
(Universidad de Costa Rica., 2008)
El estudio fitoquímico de las partes aéreas de Amyris brenesii (Rutaceae) recolectadas en Río Cuarto, Grecia, Alajuela (Costa Rica) mostró la presencia de cuatro nuevos compuestos: la 6-hidroxi-6-O-(3-hidroximetil-3-metilalil)- ...
Una nueva especie de Eugenia L. (Myrtaceae) de las selvas húmedas costarricenses
(Universidad de Costa Rica., 2004)
Se describe una nueva especie de Eugenia (Myrtaceae) de las veinte caribe de Costa Rica. Se distingue por las hojas con doble nervio marginal y los frutos acostillados y muy reticulado.
Assessment of pesticide exposure in the agricultural population of Costa Rica
(British Occupational Hygiene Society, 2005)
We describe a model for the retrospective assessment of parental exposure to 26 pesticides, selected by toxicity-based prioritization, in a population-based case–control study of childhood leukaemia in Costa Rica (301 ...
Field testing passive air samplers for current use pesticides in a tropical environment
(Universidad Nacional, Costa Rica., 2008)
Air was sampled for one year in the central valley of Costa Rica using an active high-volume sampler as well as passive samplers (PAS) based on polyurethane foam (PUF) disks and XAD-resin filled mesh cylinders. Extracts ...
Mortality among a Cohort of Banana Plantation Workers in Costa Rica
(Taylor & Francis, 2006)
The nematocide 1,2-dibromo-3-chloropropane (DBCP), widely used in Costa Rica during the late 1960s and 1970s, causes sterility in men and is a possible carcinogen. Mortality among a cohort of Costa Rican banana plantation ...
A pilot field evaluation on heat stress in sugarcane workers in Costa Rica: What to do next?
(Universidad Nacional, Costa Rica, 2009)
Climate change is producing major impacts including increasing temperatures in tropical countries, like Costa Rica, where the sugarcane industry employs thousands of workers who are exposed to extreme heat. Objectives: ...