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38 resultados encontrados para: TEMA: Jitotol (Chiapas, México)
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1.
- Artículo con arbitraje
Carbon stocks in organic coffee systems in Chiapas, Mexico
Soto Pinto, Lorena (1958-) ; Aguirre Dávila, Carlos Mario (coaut.) ;
Contenido en: Journal of Agricultural Science Vol. 7, no. 1 (2015), p. 117-128 ISSN: 1916-9752
Resumen en: Inglés |
Resumen en inglés

Agroforestry systems contribute to the maintenance of ecosystem functions, especially agrisilvicultural systems such as shade coffee systems. However, the role of organic crops to store carbon has been scarcely investigated. This study aimed to quantify carbon stocks in organic polyculture coffee plantations, non-organic polyculture plantations, and organic Inga spp.-shaded coffee systems in northern Chiapas, Mexico. Vegetation inventories were carried out in 1,000and 100 m2 circular plots from six agroforestry communities. Carbon stocks were estimated from living biomass and roots through allometric formulas; dead biomass and soil organic matter (0- 0.3 m- in depth) were collected, dried, weighted and processed for laboratory analysis. Firstly, results showed that living biomass contributed about 30% of total carbon; soil organic carbon particularly contributed between 56 and 70%; while dead organic matter represented between 3 and 5% of total carbon in the system. Organic polyculture coffee plantations stored significantly more carbon in soil (0.1-0.3 m in depth) and tree biomass than non-organic polyculture coffee plantations. These stocks were intermediate in organic Inga spp.-shaded coffee system. Secondly, dead organic matter was statistically similar between systems.

Thus, organic polyculture coffee plantations, non-organic polyculture, and organic Inga spp.-shade system stored 194.7, 134.9, and 154.3 Mg C ha-1 of total carbon, respectively. In the same order, these systems stored in live aboveground biomass 57.5, 53.0, and 46.9 Mg C ha-1, respectively. Dead organic matter had similar amounts of C stored in the three studied systems (6.3 Mg C ha-1). The amounts of total carbon stocks in organic coffee were higher than those reported for others in coffee plantations in Central America and, particularly, similar to some dry and semi-humid forests and other agrisilvicultural systems in Mexico. The results highlight the importance of coffee, especially organic coffee to provide the environmental function of carbon sequestration.


2.
- Artículo con arbitraje
Resumen en: Inglés |
Resumen en inglés

While climate change adaptation policy has tended to focus on planned adaptation interventions, in many vulnerable communities, adaptation will consist of autonomous, “unplanned” actions by individuals who are responding to multiple simultaneous sources of change. Their actions are likely not only to affect their own future vulnerability, but, through changes in livelihoods and resource use, the vulnerability of their community and resource base. In this paper, we document the autonomous changes to livelihood strategies adopted by smallholder coffee farmers in four Mesoamerican countries (Mexico, Guatemala, Honduras, and Costa Rica). Our aim is to gain insight into the process of autonomous adaptation by proxy: through an assessment of how farmers explain their choices in relation to distinct stressors; and an understanding of the set of choices available to farmers. We find that climatic stress is a feature in decision making, but not the dominant driver. Nevertheless, the farmers in our sample are evidently flexible, adaptive, and experimental in relation to changing circumstances. Whether their autonomous responses to diverse stressors will result in a reduction in risk over time may well depend on the extent to which policy, agricultural research, and rural investments build on the inherent logic of these strategies.


3.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Batrachochytrium dendrobatidis: un hongo patógeno de anfibios
Quintero Díaz, Gustavo Ernesto ; Muñoz Alonso, Luis Antonio (coaut.) ; Lips, Karen Rene (coaut.) ;
Contenido en: La biodiversidad en Chiapas: estudio de estado Distrito Federal, México : Comisión Nacional para el Conocimiento y Uso de la Biodiversidad : Gobierno del Estado de Chiapas, 2013 Vol. 1, p. 361-364 ISBN:978-607-7607-99-1
Cerrar
SIBE Campeche
43908-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
43908-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
43908-10 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
43908-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
43908-50 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
PDF

4.
Artículo
*En hemeroteca, SIBE-San Cristóbal
The role of local knowledge in determining shade composition of multistrata coffee systems in Chiapas, Mexico
Soto Pinto, Lorena (1958-) ; Villalvazo López, Víctor Manuel (coaut.) ; Jiménez Ferrer, Guillermo (coaut.) ; Ramírez Marcial, Neptalí (coaut.) (1963-) ; Montoya Gómez, Guillermo (coaut.) ; Sinclair, Fergus L. (coaut.) ;
Contenido en: Biodiversity and Conservation Vol. 16, no. 2 (2007), p. 419–436 ISSN: 0960-3115
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
45373-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
Resumen en: Inglés |
Resumen en inglés

This research explores interactions between farmers’ knowledge and socioeconomic circumstances and the floristic composition of multistrata coffee plantations in Chiapas, Mexico. Interviews with 24 individual farmers with accompanying vegetation transects and two community level participatory workshops were carried out. The frequency, density, dominance, utility and importance value for all tree species surveyed were obtained. Farmers were grouped by cluster analysis on the basis of their land area, time producing coffee and the age of their coffee farms but the dominant shade species in their coffee plantations was not influenced by socioeconomic status (p<0.05). A total of 74 shade species were recorded and classified as temporary, suitable, or unsuitable as shade species by farmers, based on attributes such as leaf phenology, foliage density, crown shape and the amount and timing of litter decomposition, as well as their overall impact on coffee yield. Principal component and cluster analysis using these attributes confirmed the consistency of the farmers’ classification system.

A group of preferred species was identified, but less than half the trees recorded on farms were of these species, showing that farmers retained a wide range of trees and shrubs in their plantations, taking into account not only commercial interests but also their contribution to ecosystem functions. Farmers harnessed the forces of secondary succession by retaining pioneers as temporary shade, knowing that they would naturally be succeeded, while at the same time promoting and tolerating other longer living native species that they considered more suitable as coffee shade. Managing diverse secondary succession instead of establishing monospecific shade was an efficient way for farmers to achieve acceptable coffee yields while contributing to biodiversity and landscape conservation that could allow them access to niche markets.


5.
- Artículo de divulgación
*En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
Historia de la comunidad de Altamirano, Jitotol
Bojórquez, Alma ;
Contenido en: ECOfronteras No. 25 (Agosto 2005), p. 35-36 ISSN: 2007-4549
Cerrar
SIBE Campeche
39776-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
39776-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
B8417 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
39776-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
39776-50 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
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6.
Mapa
Jitotol[Plano]
Aguascalientes, Aguascalientes, México : Instituto Nacional de Estadística, Geografía e Informática , 2004
Clasificación: MAP/711.097275 / J57/1
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010006873 (Disponible)
Disponibles para prestamo: 1

7.
- Artículo con arbitraje
*En hemeroteca, SIBE-Campeche
Coffee production, timber, and firewood in traditional and inga-shaded plantations in southern Mexico
Peeters, Liza Yvonne Karolina ; Soto Pinto, Lorena (coaut.) (1958-) ; Perales Rivera, Hugo Rafael (coaut.) ; Montoya Gómez, Guillermo (coaut.) ; Ishiki Ishihara, Mario (coaut.) ;
Clasificación: AR/633.73 / C64
Contenido en: Agriculture Ecosystems and Environment Vol. 95, no. 2-3 (May 2003), p. 481-493 ISSN: 0167-8809
Cerrar
SIBE Campeche
28685-70 (Disponible) , ECO040003062 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Chetumal
ECO030000202 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010003663 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020005951 (Disponible) , ECO020009600 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Villahermosa
ECO050003582 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche
Resumen en: Inglés |
Resumen en inglés

Traditional Mexican coffee plantations, with a diverse shade vegetation of native tree species, are being replaced by coffee monocultures shaded by trees of the genus Inga, resulting in loss of biodiversity and ecological services. Coffee production is said to benefit from Inga shade, but few on-field experiments have been done to support this hypothesis. Secondary production (timber, firewood, fruits, medicines, etc.) is probably lower in Inga-shaded coffee plantations, and that loss could outweigh benefits from increased coffee production. Coffee yields, present stock of timber, and aboveground tree biomass as an indicator of firewood production were measured and compared for plots in traditional and in Inga-shaded plantations in Plan Paredón, Chiapas, Mexico. Coffee production was similar in both plantation types. Timber production was significantly higher in traditional plantations, and amounted to ten times the timber production in Inga-shaded plantations. Total tree biomass was significantly higher in traditional coffee plantations, but not biomass of tree species apt for firewood. However, firewood production could be higher in traditional plantations. There seems to be no reason to replace traditional plantations by Inga-shaded ones in order to increase production in the plantations studied.


8.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal, SIBE Villahermosa
Proyectos productivos para mujeres: discurso y experiencias
Enríquez Monzón, Mónica A. ; Kauffer Michel, Edith Francoise (coaut.) ; Tuñón Pablos, Esperanza (coaut.) ; Soto Pinto, Lorena (coaut.) (1958-) ;
Contenido en: Convergencia Vol. 10, no. 32 (mayo-agosto 2003), p. 111-142 ISSN: 1405-1435
Bibliotecas: San Cristóbal , Villahermosa
Cerrar
SIBE San Cristóbal
B9395 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
B9396 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal, SIBE Villahermosa
PDF PDF
Resumen en: Español | Inglés |
Resumen en español

El estudio de las interrelaciones del grupo de mujeres de la comunidad de Amor de Dios con organizaciones sociales para la ejecución de proyectos productivos, indicó la existencia de la participación militante de las mujeres en tales organizaciones y una participación motivada por la búsqueda de alternativas que alivien su autodenominada situación de pobreza. Sin embargo, las condiciones de los actuales proyectos no sugieren que éstos formen parte de una estrategia diseñada para la atención de las mujeres ni mucho menos, apuntan a una mejoría en sus condiciones de vida.

Resumen en inglés

The re la tion ships be tween the “Women of Amor de Dios” in volved with so cial organizations in the north ern re gion of Chiapas in the im ple men ta tion of pro duc tive pro jects showed the existence of their activist participation. Additionally, this participation was motivated by the search for eco nomic al ter na tives to im prove their pov erty sit u a tion. As a mater o fact , the con di tions of the cur rent pro jects do not sug gest that they are a strat egy designed for the women´s at ten tion, at the same time, they don’t im prove their life con di tions. Key words: WID, GID, so cial or ga ni za tions, women groups, her me neu tic.


9.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal
Relaciones alométricas para la predicción de biomasa forrajera y leña de acacia pennatula y guazuma ulmifolia en dos comunidades del norte de Chiapas, México
López Merlín, David ; Soto Pinto, Lorena (coaut.) (1958-) ; Hernández Daumás, Salvador (coaut.) ; Jiménez Ferrer, Guillermo (coaut.) ;
Clasificación: AR/583.321 / R4
Contenido en: Interciencia Vol. 28, no. 6 (junio 2003), p. 334-339 ISSN: 0378-1844
Cerrar
SIBE Campeche
ECO040001127 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030000205 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010017404 (Disponible) , B8234 (Disponible) , ECO010003667 (Disponible)
Disponibles para prestamo: 3
Cerrar
SIBE Tapachula
ECO020002823 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050003591 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Español | Inglés | Portugués |
Resumen en español

Acacia pennatula (Schltdl. y Cham.) Benth. y Guazuma ulmifolia Lam. son especies importantes como forraje y leña en las áreas tropicales secas y subhúmedas. Sin embargo se desconoce la producción con respecto a variables alométricas. Se establecieron modelos alométricos para predecir la acumulación de forraje y leña de estas especies en condiciones naturales de vegetación secundaria en dos localidades del norte de Chiapas, México. En marzo 2001 se realizó una poda de homogenización a 23 árboles de cada especie, cuantificándose la cantidad de leña. La producción de forraje se calculó mediante la cosecha de rebrotes seis meses después de la poda. La producción de materia seca del forraje se estimó mediante varios modelos predictivos utilizando diámetro basal (db), diámetro a la altura del pecho (dap), volumen del tocón, número de rebrotes por árbol (nra), longitud del rebrote y diámetro de la base del rebrote como variables alométricas. La producción de leña en materia seca para ambas especies se relacionó con el db. Para A pennatula el forraje fue predecible con nra (modelo polinomial cúbico), el forraje de G. ulmifolia fue predecible con el db (modelo lineal) y el peso de la leña fue predecible con el db para ambas especies (modelo potencial). Estos modelos alométricos permitirán la estimación de la producción de forraje y leña en condiciones similares a las estudiadas.

Resumen en inglés

Acacia pennatula (Schltdl. & Cham.) Benth. and Guazuma ulmifolia Lam. are important species used as forage and fuel wood in dry and sub-humid tropics. Nevertheless, the relation between fuel wood, forage and allometric variables is unknown. Allometric models were fitted to predict forage accumulation and fuel wood for these species in secondary vegetation, in two localities in Northern Chiapas, Mexico. During March 2001 a homogenization pruning was practiced to 23 trees of each species, and fuel wood was quantified. Forage production was calculated through the sprout harvest six months after pruning. Forage dry matter production was estimated through several models, using allometric variables such as: basal diameter (bd), breast height diameter, stump volume, number of sprouts per tree (nst), sprout length, sprout basal diameter (sbd). Fuel wood dry matter production for both species was related to bd. For A. pennatula forage dry matter was predictable with nst (cubic model), G. ulmifolia forage was predictable with bd (lineal model), fuel wood weight was predictable with bd for both species (potential model). These allometric models permit the estimation of forage and fuel wood in similar conditions to those of the studied area.

Resumen en portugués

Acacia pennatula (Schltdl. e Cham.) Benth. e Guazuma ulmifolia Lam. são espécies importantes como forragem e lenha nas áreas tropicais secas e sub-úmidas. No entanto se desconhece a produção em relação a variáveis alométricas. Estabeleceram-se modelos alométricos para predizer a acumulação de forragem e lenha destas espécies em condições naturais de vegetação secundária em duas localidades do norte de Chiapas, México. Em março de 2.001 realizou-se uma poda de homogeneização a 23 árvores de cada espécie, quantificando-se a quantidade de lenha. A produção de forragem se calculou mediante a colheita de rebrotes seis meses depois da poda. A produção de matéria seca da forragem estimou-se mediante vários modelos preditivos utilizando diâmetro basal (db), diâmetro na altura do peito (dap), volume do tocón, número de rebrotes por árvore (nra), longitude do rebrote e diâmetro da base do rebrote como variáveis alométricas. A produção de lenha em matéria seca para ambas espécies se relacionou com o db. Para A pennatula a forragem foi previsível com nra (modelo polinomial cúbico), a forragem de G. ulmifolia foi previsível com o "db" (modelo lineal) e o peso da lenha foi previsível com o "db" para ambas espécies (modelo potencial). Estes modelos alométricos permitirão a estimação da produção de forragem e lenha em condições similares às estudadas.


10.
Artículo
*En hemeroteca, SIBE-Campeche, SIBE-San Cristóbal
Coffe yields and soil nutrients under the shades of Inga sp. vs. multiple species in Chiapas, Mexico
Romero Alvarado, Yolanda ; Soto Pinto, Lorena (coaut.) (1958-) ; García Barrios, Luis Enrique (coaut.) ; Barrera, Juan F. (coaut.) ;
Contenido en: Agroforestry Systems Vol. 54, no. 3 (2002), p. 215-224 ISSN: 0167-4366
Nota: En hemeroteca, SIBE-Campeche, SIBE-San Cristóbal
Resumen en: Inglés |
Resumen en inglés

For many decades, simplification of traditionally shaded coffee-production systems has been an idealised model for increasing yields. In Mexico, coffee producers have been interested in replacing diverse natural shade with Inga species monocultures due to this practice having the supposed advantages of producing higher coffee yields than diverse shade. However, the effect of different shade systems on yields is little known. The purpose of this study was to evaluate the effect of two types of shaded-coffee systems on coffee yields and soil nutrient content; the first shade system is mainly dominated by Inga latibracteata Harms and the other composed of species-rich natural vegetation. The investigation took place in producer plots in the Francisco I. Madero Community, Municipality of Jitotol, Chiapas, Mexico. Collected data included species richness, shade-tree density, number of strata, tree diameter, tree height, shade-cover percentage, direct and diffused light, coffee yields, soil-nutrient concentrations (N, P, K, Ca and Mg), soil-organic matter and pH. Evaluated shade type did not have an effect on grain yield or soil nutrients. The perceived advantage of the Inga shade system is reduced weed emergence, saving farmers one annual weed-clearing. There was no significant correlation between total N and organic matter. The presence of fewer products and services in comparison to the multiple shade system was thought to be an additional disadvantage to the Inga dominated system. Organic matter in the multiple shade system correlated positively with total N. Due to its complex structure and diversity, the multiple shade system could be certified as shade or bird-friendly coffee.