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625 resultados encontrados para: TEMA: Calakmul (Campeche, México)
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1.
Libro
Design of agroforestry technologies for sustainable agriculture in the forest buffer zone of southeast Mexico / prepared by Ann Snook and Jeremy Haggar
Snook, Ann ; Haggar, Jeremy (coaut.) ;
Distrito Federal, México : International Centre for Research in Agroforestry, In Agroforestry , s.f.
Clasificación: Q/634.99 / S66
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040001496 (Disponible)
Disponibles para prestamo: 1

2.
Libro
Diagnósticos participativos / Cecilia Elizondo
Elizondo, Cecilia (autora) ;
San Cristóbal de Las Casas, Chiapas, México : El autor , s.f.
Clasificación: EE/304.2 / E4
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040000943 (Disponible)
Disponibles para prestamo: 1

3.
Libro
Evaluación del valor económico de los productos arbóreos en Calakmul, Campeche y zona Maya, Q. Roo, México. 1996 / Mauricio Sosa Montes, Luis Pérez Miranda
Sosa Montes, Mauricio ; Pérez Miranda, Luis (coaut.) ;
Distrito Federal, México : International Centre for Research in Agroforestry, In Agroforestry , s.f.
Clasificación: CA/333.75 / S6
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040000029 (Disponible)
Disponibles para prestamo: 1

4.
Libro
Las mujeres de la Unidad Agrícola Industrial de la Mujer UAIM del ejido Valentín Gómez Farías Calakmul Campeche / Norma del C. Poot Naal
Poot Naal, Norma del C. ;
Campeche, Campeche, México : [John D. and Catherine T. MacArthur Foundation] , [s.f.]
Clasificación: CA/324.3097275 / P6
Bibliotecas: Villahermosa
Cerrar
SIBE Villahermosa
ECO050003323 (Disponible)
Disponibles para prestamo: 1

5.
Libro
Vínculos y convergencias entre salud reproductiva y desarrollo sustentable. Estudios de caso / Leticia Murúa Beltrán, Juan José Jiménez Osorio en colaboración con: Itzá Castañeda, Friné López, Denisse Soares e Hilda Salazar
Murúa Beltrán, Leticia ; Jiménez Osorio, Juan José (coaut.) ;
México : Mujer y Medio Ambiente , [s.f.]
Clasificación: F/304.2 / C8/4
Bibliotecas: Campeche , Villahermosa
Cerrar
SIBE Campeche
ECO040002052 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050001896 (Disponible)
Disponibles para prestamo: 1

PDF
Resumen en: Inglés |
Resumen en inglés

Perceptions of climate change, the impacts of and responses to climatic variability and extreme weather are explored in three communities in the Yucatan Peninsula, Mexico, in relation to livelihood resilience. These communities provide examples of the most common livelihood strategies across the region: small-scale fisheries (San Felipe) and semi-subsistence small-holder farming (Tzucacab and Calakmul). Although the perception that annual rainfall is reducing is not supported by instrumental records, changes in the timing of vital summer rainfall and an intensification of the mid-summer drought (canicula) are confirmed. The impact of both droughts and hurricanes on livelihoods and crop yields was reported across all communities, although the severity varied. Changes in traditional milpa cultivation were seen to be driven by less reliable rainfall but also by changes in Mexico’s agricultural and wider economic policies. Diversification was a common adaptation response across all communities and respondents, resulting in profound changes in livelihood strategies. Government attempts to reduce vulnerability were foundto lack continuity, be hard to access and too orientated toward commercial scale producers. Population growth, higher temperatures and reduced summer rainfall will increase the pressures on communities reliant on small-scale farming and fishing, and a more nuanced understanding of both impacts and adaptations is required for improved livelihood resilience. Greater recognition of such local-scale adaptation strategies should underpin the developing Mexican National Adaptation Policy and provide a template for approaches internationally as adaptation becomes an increasingly important part of the global strategy to cope with climate change.


7.
Artículo
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Governing intensification: the influence of state institutions on smallholder farming strategies in Calakmul, Mexico
Dobler Morales, Carlos (autor) ; Roy Chowdhury, Rinku (autor) ; Schmook, Birgit Inge (autora) ;
Disponible en línea
Contenido en: Journal of Land Use Science Volumen 15, números 2-3 (May 2020), páginas 108-126 ISSN: 1747-4248
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Resumen en: Inglés |
Resumen en inglés

In forest frontiers, smallholder agrarian livelihoods remain uneasily jux-taposed with conservation interests. Agricultural intensification is often considered a viable means of reconciling competing environmental and livelihood objectives given its potential to concentrate production onless land. However, intensification may have unintended consequences, including loss of resilient agricultural systems. The risks of smallholder agricultural intensification warrant a better understanding of its drivers. This study uses the case of Calakmul, Mexico, to examine the critical role of the state in intensification processes. Drawing on household surveys and key-informant interviews, it traces the linkages between state institutions and local farming practices. Statistical and qualitative analyses reveal how intensification is both incentivized and imposed by prevailing policies, the former via subsidies and the latter via regulations against field rotations. The outcome – increased external inputs and longer cultivation periods between fallows – may undermine the sustainability of smallholders’ agroecosystems, an undesirable consequence amid limited livelihood alternatives.


8.
Artículo
Living smallholder vulnerability: the everyday experience of y climate change in Calakmul, Mexico
Green, Lisa (autora) ; Schmook, Birgit Inge (autora) ; Radel, Claudia (autora) ; Márdero Jiménez, Silvia Sofía (autora) ;
Disponible en línea
Contenido en: Journal of Latin American Geography Volumen 19, número 2, artículo 6 (March 2020), páginas 1-44 ISSN: 1548-5811
Resumen en español

Si bien la academia ha reconocido que la vulnerabilidad de individuos y comunidades al cambio climático es altamente influenciada por su estatus social, las políticas públicas siguen partiendo frecuentemente del supuesto de comunidades agrícolas homogéneas. Sin embargo, los residentes experimentan su propia vulnerabilidad de manera individual. Nuestra investigación exploró cómo los residentes de Calakmul, México, percibieron y se desenvolvieron frente a su propia vulnerabilidad al cambio climático. Cincuenta y cinco entrevistas semiestructuradas en 2013 y cuarenta y tres entrevistas de seguimiento en 2016 proporcionan información sobre la percepción de los efectos del cambio climático en sus modos de vida, actividades, salud y la escasez de alimentos. El análisis se centró en los patrones de la vida diaria de los residentes, en las experiencias vividas, y en cómo esto varía entre comunidades, hogares e individuos. La situación de cada comunidad y el acceso a los distintos recursos, así como las variaciones en las actividades de subsistencia y otras circunstancias configuraron el sentido de vulnerabilidad de los entrevistados. Además, los residentes informaron una variedad de opciones para hacer frente a los efectos del cambio climático, la mayoría de las cuales requerían aportaciones en efectivo. Sin embargo, informaron que las oportunidades normales de obtener dinero en efectivo a través del trabajo asalariado agrícola también se han visto reducidas por el cambio climático.

Resumen en inglés

Despite established science on climate change vulnerability as mediated by social status, policy discussions of climate change vulnerabilities often still treat smallholder farming communities as largely undifferentiated. Residents themselves, however, experience their own vulnerability in the context of their individual lives. Our research explored how residents of Calakmul, Mexico, perceived and experienced their own vulnerability to climate change. Fifty-five semi-structured interviews in 2013 and forty-three follow-up interviews in 2016 provide data on perceived effects of climate-related stressors on their livelihood activities, health, and experiences of hunger. Analysis focused on patterns in residents’ everyday, lived experiences and on variation among individuals and families. Community status and associated resource access, variations in livelihood activities, and other situational aspects shaped interviewees’ sense of their own vulnerabilities. In addition, residents reported a variety of options for coping with the effects of climate change, most of which required cash inputs. Yet they also reported that normal opportunities for obtaining cash through agricultural wage labor were likewise curtailed by climate change.


9.
Artículo
Moon light and the activity patterns of baird’s tapir in the Calakmul region, Southern Mexico
Sánchez Pinzón, Khiavett Guadalupe (autora) ; Reyna Hurtado, Rafael Ángel (autor) ; Meyer, Ninon France Victoire (autora) ;
Contenido en: Therya Vol. 11, no. 1 (2020), p. 137-142 ISSN: 2007-3364
PDF
Resumen en: Español | Inglés |
Resumen en español

El tapir de Baird (Tapirella bairdii) es una especie amenazada en toda su área de distribución, sin embargo, muchos aspectos de su biología y ecología han sido poco estudiados, debido a su comportamiento evasivo y a sus bajas densidades poblacionales. El objetivo de este estudio fue evaluar los patrones de actividad de T. bairdii en relación con las fases lunares en dos sitios con diferente grado de perturbación humana: la Reserva de la Biosfera de Calakmul (RBC) y el Ejido Nuevo Becal (NB). Se monitorearon 20 cuerpos de agua durante18 meses mediante el método de foto-trampeo. Se determinó la tasa de captura (TC) y se registraron las fases lunares correspondientes para ambos sitios. La TC de T. bairdii tapir fue de 0.054 en NB y de 0.029 en la RBC. T. bairdii fue más activo en el periodo nocturno-crepuscular. En general, T.bairdii. mostro una actividad importante durante las fases de oscuridad, pero estas diferencias no fueron significativas estadísticamente. Sin embargo, se encontró una tendencia de los tapires a moverse activamente en las noches y en las horas más obscuras en NB que en RBC. La preferencia aparente por las noches más obscuras en NB podría ser evidencia de la respuesta por parte de los tapires a la perturbación causada por actividades humanas en ese sitio, mostrando un cambio en su comportamiento evitando salir en periodos de abundante luz en sitios perturbados. Sin embargo, se requiere de mayor investigación para corroborar esta posibilidad.

Resumen en inglés

The Baird’s tapir (Tapirella bairdii) is an endangered species throughout its distribution area, however many aspects of its biology and ecology have been poorly studied, due to its evasive behavior and low densities. The goal of this study was to evaluate the activity patterns of T. bairdii, a large ungulate species from the Neotropics, in relation to moon phases in two sites with different degree of human perturbation: the Calakmul Biosphere Reserve (CBR) and the Nuevo Becal (NB) community. We monitored twenty waterbodies in each site for 18 months using camera traps. The photographic capture rate (CR) and the corresponding moon phases for both sites were recorded. The CR of T. bairdii was 0.054 in NB and 0.029 in CBR. T. bairdii was more active at night and dawn-twilight periods. In general, T. bairdii showed major activity during the dark moon phases but the differences with the light phases were not statistically significant. However, we found a trend of tapirs to be more active in dark nights and in the darkest hours in NB than CBR. The apparent preferences for dark nights in NB could be caused by the perturbation caused by human activities at site, which may have influenced the behavior of the tapir that avoid moving out in periods of abundant light in disturbed sites. More research is needed to confirm this finding.


10.
Artículo
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Successive grafting confers juvenility traits to adult Spanish red cedar (Cedrela odorata Linnaeus): a tool for the rescue of selected materials
Robert, Manuel L (autor) ; Juárez Gómez, Juan (autor) ; Chaires Pacheco, Mariana (autora) ; Peña Ramírez, Yuri Jorge Jesús (autor) ;
Contenido en: New Forests Vol. 51 (2020), p. 335-347 ISSN: 1573-5095
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Resumen en: Inglés |
Resumen en inglés

Spanish red cedar, Cedrela odorata L. (Meliaceae), is a valuable timber tree in tropical American forests. Existing demand for elite individuals endangers the conservation of interesting germplasm, prompting the development of efficient protocols for the establishment of orchards for tree breeding. Based on previous work regarding grafting adult individuals onto young rootstocks, superior trees from Calakmul Biosphere Reserve in Campeche, Mexico were employed as a source of explants for plant regeneration after successive rounds of grafting and micrografting onto juvenile rootstocks. The results showed that root length and appearance, internode distance, leaf length and number, and plant height values for trees derived from successive rounds of grafting and micrografting were similar to those obtained from juvenile trees derived from seeds, suggesting that developmental traits associated with reinvigoration were partially induced following the reported procedure. This protocol may be useful for the propagation of mature elite trees belonging to the Meliaceae family.