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20 resultados encontrados para: AUTOR: Caballero, Javier
11.
- Artículo con arbitraje
*En hemeroteca, SIBE-Tapachula
Impact of a nucleopolyhedrovirus bioinsecticide and selected synthetic insecticides on the abundance of insect natural enemies on maize in southern Mexico
Armenta, R. ; Martínez, A. M. (coaut.) ; Chapman, Jason W. (coaut.) ; Magallanes Cedeño, Ricardo (coaut.) ; Goulson, D. (coaut.) ; Caballero, P. (coaut.) ; Cave, Ronald D. (coaut.) ; Cisneros, J. (coaut.) ; Valle Mora, Javier Francisco (coaut.) ; Castillejos Puón, Vasty (coaut.) ; Penagos Torres, Dora Isabel (coaut.) ; García, L. F. (coaut.) ; Williams, Trevor (coaut.) ;
Contenido en: Journal of Economic Entomology Vol. 96, no. 3 (June 2003), p. 649-661 ISSN: 0022-0493
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
B3099 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Tapachula
PDF
Resumen en: Inglés |
Resumen en inglés

The impact of commonly used organophosphate (chlorpyrifos, methamidophos), carbamate (carbaryl), and pyrethroid (cypermethrin) insecticides on insect natural enemies was compared with that of a nucleopolyhedrovirus (Baculoviridae) of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in maize grown in southern Mexico. Analyses of theSELECTVand Koppert Side Effects (IOBC) databases on the impact of synthetic insecticides on arthropod natural enemies were used to predict 75Ð90% natural enemy mortality after application, whereas the bioinsecticide was predicted to have no effect. Three Þeld trails were performed in mid- and late-whorl stage maize planted during the growing season in Chiapas State, Mexico. Synthetic insecticides were applied at product label recommended rates using a manual knapsack sprayer Þtted with a cone nozzle. The biological pesticide was applied at a rate of 3 1012 occlusion bodies (OBs)/ha using identical equipment. Pesticide impacts on arthropods on maize plants were quantiÞed at intervals between 1 and 22 d postapplication. The biological insecticide based on S. frugiperda nucleopolyhedrovirus had no adverse effect on insect natural enemies or other nontarget insect populations. Applications of the carbamate, pyrethroid, and organophosphate insecticides all resulted in reduced abundance of insect natural enemies, but for a relatively short period (8Ð15 d). Pesticide applications made to late-whorl stage maize resulted in lesser reductions in natural enemy populations than applications made at the mid-whorl stage, probably because of a greater abundance of physical refuges and reduced spray penetration of late-whorl maize.


12.
Libro
Contribuciones de la ciencia al manejo costero integrado de la Bahía de Chetumal y su área de influencia / por: Francisco J. Rosado May, Rafael Romero Mayo y Alberto de Jesús Navarrete, (editores)
Encuentro Internacional sobre la Bahía de Chetumal y su Área de Influencia (2001) ; Rosado May, Francisco Javier (editor) ; Romero Mayo, Rafael Ignacio (editor) ; De Jesús Navarrete, Alberto (editor) ;
Chetumal, Quintana Roo, México : Universidad de Quintana Roo. Programa de Manejo Integrado de Recursos Costeros , 2002
Clasificación: Q/333.917160972 / E5/2
Bibliotecas: Chetumal , San Cristóbal
Cerrar
SIBE Chetumal
ECO030001001 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010005496 (Disponible)
Disponibles para prestamo: 1

13.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal
Shade over coffee: its effects on berry borer, leaf rust and spontaneous herbs in Chiapas, Mexico
Soto Pinto, Lorena (1958-) ; Perfecto, Ivette (coaut.) ; Caballero Nieto, Javier (couat.) ;
Clasificación: AR/633.73097275 / S6
Contenido en: Agroforestry Systems Vol. 55, no. 1 (June 2002), p. 37-45 ISSN: 0167-4366
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010018135 (Disponible) , B9741 (Disponible)
Disponibles para prestamo: 2
Nota: En hemeroteca, SIBE-San Cristóbal
Resumen en: Inglés |
Resumen en inglés

The objective of this research was to determine the relationships between different ecological features of shade and the incidence of coffee berry borer, coffee leaf rust and spontaneous herbs in rustic coffee plantations in Chiapas, Mexico. Thirty-six 10 m by 10 m plots were established within coffee plantations. The following variables were measured or estimated: number of vegetation strata, percent canopy cover, direct, diffuse and total sunlight below the canopy, plant species richness and diversity, shade tree/shrub density, altitude, aspect, basal area, yields, percentage of coffee berry borer (Hypothenemus hampei Ferr), percentage of coffee leaf rust (Hemileia vastatrix Berk & Br.), percentage of spontaneous herb cover and the presence of paths and runoffs. Results showed a complex agroforestry system, composed of five strata.

Coffee berry borer and coffee leaf rust incidence averages were 1.5% and 10.1%,respectively. Average spontaneous herb cover was 34.1%. Coffee leaf rust percentage correlated positively with the coffee berry borer. Number of strata of shade vegetation correlated negatively with leaf rust, while the presence of paths correlated positively with the leaf rust. Species richness and diversity correlated negatively to broad-leaf-herb cover and the presence of runoffs correlated positively to this last variable. Shade tree density (> 10cm d.b.h.) correlated negatively to linear-leaf-herb cover. Percentage of shade cover, light, coffee density, aspect, stand age, basal area and yields were not correlated to pest, disease and weeds. Results support the ecological theory that postulates that diversity and structural complexity in mixed plant systems maintain a healthy system.


14.
- Artículo con arbitraje
Woody plant diversity and structure of shade-grown-coffee plantations in northern Chiapas, Mexico
Soto Pinto, Lorena (1958-) ; Romero Alvarado, Yolanda (coaut.) ; Caballero Nieto, Javier (coaut.) ; Segura Warnholtz, Gerardo (coaut.) ;
Clasificación: AR/633.73 / W6
Contenido en: Revista de Biología Tropical Vol. 49, no. 3-4 (september-december 2001), p. 977-987 ISSN: 0034-7744
Cerrar
SIBE Campeche
ECO040003039 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030004530 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010018252 (Disponible) , ECO010004233 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Tapachula
ECO020002824 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050000203 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Español | Inglés |
Resumen en español

El café bajo sombra es un sistema agrícola que contiene algunas características de los bosques. Sin embargo, las características estructurales y de diversidad de la sombra del café son poco conocidas. En 61 parcelas de productores del norte de Chiapas, Mexico, se midieron variables estructurales de la vegetación de sombra y los rendimientos de café, registrando las especies y sus usos. Los cafetales presentaron cinco estratos de vegetación. Se encontraron 77 especies leñosas, la mayoría de uso maderable (densidad promedio de 371.4 árboles por hectárea). Noventa por ciento fueron especies nativas (40 % de la flora local), el porcentaje restante fueron especies introducidas, principalmente árboles o arbustos frutales. La distribución diamétrica se asemeja a la distribución típica de bosques secundarios. El Análisis de Coordenadas Principales distinguió cuatro grupos de parcelas por la presencia de Inga, sin embargo las parcelas son diversas. No hubo diferencias en equitabilidad entre grupos y tampoco en rendimientos de café. Los rendimientos fueron de 835 g de café pergamino por arbusto o aproximadamente 1668 kg por ha. Se discute el importante papel del café de sombra como refugio de plantas leñosas y como hábitats para fauna asociada así como la oportunidad de los productores de participar en el nuevo mercado de café amable con la biodiversidad.

Resumen en inglés

Shade-grown coffee is an agricultural system that contains some forest-like characteristics. However, structure and diversity are poorly known in shade coffee systems. In 61 coffee-growers' plots of Chiapas, Mexico, structural variables of shade vegetation and coffee yields were measured, recording species and their use. Coffee stands had five vegetation strata. Seventy seven woody species mostly used as wood were found (mean density 371.4 trees per hectare). Ninety percent were native species (40 % of the local flora), the remaining were introduced species, mainly fruit trees/shrubs. Diametric distribution resembles that of a secondary forest. Principal Coordinates Analysis grouped plots in four classes by the presence of Inga, however the majority of plots are diverse. There was no difference in equitability among groups or coffee yields. Coffee yield was 835 g clean coffee per shrub, or ca. 1 668 kg [ha.sup.-1]. There is a significant role of shade-grown coffee as diversity refuge for woody plants and presumably associated fauna, as well as an opportunity for shade-coffee growers to participate in the new biodiversity-friendly-coffee market.


15.
- Tesis
Estudio agroecológico del sistema de café con sombra en comunidades indígenas de Chiapas, México
Soto Pinto, Lorena (1958-) ; Caballero Nieto, Javier (director) ; Segura Wharnoltz, Gerardo (asesor) ; Bye Boettler, Robert A. (asesor) ;
Distrito Federal, México : Universidad Nacional Autónoma de México. Facultad de Ciencias , 2000
Clasificación: TE/633.73 / S6
Cerrar
SIBE Chetumal
ECO030000381 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010004957 (Disponible) , ECO010004949 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Tapachula
ECO020002965 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050001382 (Disponible)
Disponibles para prestamo: 1

16.
- Artículo con arbitraje
Shade effect on coffee production at the northern tzeltal zone of the state of Chiapas, Mexico
Soto Pinto, Lorena (1958-) ; Perfecto, Ivette (coaut.) ; Castillo Hernández, Juan (coaut.) ; Caballero Nieto, Javier (coaut.) ;
Clasificación: AR/633.73097275 / S5
Contenido en: Agriculture, Ecosystems and Environment Vol. 80, no. 1-2 (August 2000), p. 61–69 ISSN: 0167-8809
Bibliotecas: San Cristóbal , Tapachula
Cerrar
SIBE San Cristóbal
ECO010017742 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020011527 (Disponible)
Disponibles para prestamo: 1
Resumen en: Inglés |
Resumen en inglés

The necessity of on-farm research to assess the relationship between shade ecological features and yields has been broadly recognised. On this basis, a more sustainable coffee system could be developed, with better conservation of natural resources. An on-farm research projectwas conducted in the municipality of Chilón, Chiapas, Mexico, with the objectives of investigating the effect of shade structure on coffee grain yield and assessing the potential uses of associated plant species. Results showed that shade cover percentage and coffee shrub density had significant effects on yields. Maintaining coffee shrub density as a constant, a regression equation related yield to percentage shade by a quadratic polynomial. Coffee density had a significant effect on yields but shade tree density had no effect. Coffee cultivar, age of coffee stand, species richness, shade tree density, basal area, slope and aspect did not have significant effects on coffee yields. Shade tree cover had a positive effect between 23 and 38% shade cover and yield was then maintained up to 48%. Production may decrease under shade cover >50%. A total of 61 shade species were found, with an average density of 260 trees per hectare, the majority of them being indigenous species, used as food, construction materials and as firewood. The role of ecological features associated with shade on yields and availability of natural resources obtained from coffee systems are discussed.


17.
- Libro sin arbitraje
Áreas de importancia para la conservación de las aves en México / editores: Ma. del Coro Arizmendi y Laura Márquez Valdelamar
Arizmendi, Ma. del Coro (editora) ; Márquez Valdelamar, Laura (editora) ;
Distrito Federal, México : Ma. del Coro Arizmendi y Laura Márquez Valdelamar , [2000]
Clasificación: C/598.2972 / A7
Bibliotecas: Campeche , Chetumal , San Cristóbal
Cerrar
SIBE Campeche
ECO040000194 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030005936 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010019396 (Disponible)
Disponibles para prestamo: 1

18.
Libro
Utilización y conservación de los ecosistemas terrestres de México. Pasado, presente y futuro / Antony Challenger ; con la colaboración de Javier Caballero ; traducción de manuscrito Sergio Zárate, Ramón Elizondo
Challenger, Antony ; Zárate Padilla, Sergio (tr.) ; Elizondo Mata, Ramón (cotr.) ;
Distrito Federal, México : Comisión Nacional para el Conocimiento y Uso de la Biodiversidad , 1998
Clasificación: 333.9516 / C4
Bibliotecas: Campeche , Chetumal , San Cristóbal
Cerrar
SIBE Campeche
ECO040000563 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030002124 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010005686 (Prestado)
Disponibles para prestamo: 0

19.
Libro
Etnobotánica mixteca: sociedad, cultura y recursos naturales en la montaña de Guerrero / Alejandro Casas, Juan Luis Viveros, Javier Caballero
Casas Fernández, Alejandro ; Viveros Salinas, Juan Luis (coaut.) ; Caballero, Javier (coaut.) ;
México : Consejo Nacional para la Cultura y las Artes , 1994
Clasificación: 305.8 / P7/67
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SAA006933 (Disponible)
Disponibles para prestamo: 1

20.
Libro
Etnomicología purepecha: el conocimiento y uso de los hongos en la cuenca del lago de Pátzcuaro, Michoacán / Cristina Mapes, Gastón Guzmán y Javier Caballero
Mapes, Cristina ; Guzmán, Gastón (coaut.) ; Caballero, Javier (coaut.) ;
México : Instituto de Biología , 1981
Clasificación: F/306.4697237 / M3
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030000859 (Disponible)
Disponibles para prestamo: 1