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377 resultados encontrados para: TEMA: Conocimiento tradicional
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1.
- Artículo de divulgación
Botiquín verde: te traigo hierba santa pa´ la garganta
Sánchez Chino, Xariss Miryam (autora) ;
Disponible en línea
Contenido en: ECOfronteras Volumen 24, número 68 (enero/abril 2020), páginas 10-13 ISSN: 2007-4549
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Resumen en: Español |
Resumen en español

Tanto la experiencia popular —y antiquísima— como la ciencia moderna han demostrado que las plantas cuentan con propiedades farmacológicas vitales para la atención a la salud. Esto implica que no solo podemos confiar en diversos remedios naturales, sino que el origen, manejo y dosis de las plantas utilizadas son tan importantes como en el caso de medicamentos sintéticos; de ahí la importancia de recurrir a la información e instrucción de quienes saben del tema. Palabras clave: propiedades farmacológicas, plantas medicinales, herbolaria, principios activos.


2.
Artículo
Home gardens' agrobiodiversity and owners' knowledge of their ecological, economic and socio-cultural multifunctionality: a case study in the lowlands of Tabasco, México
Avilez López, Teresita (autora) ; Van Der Wal, Hans (autor) ; Aldasoro Maya, Elda Miriam (autora) ; Rodríguez Robles, Ulises (autor) ;
Disponible en línea
Contenido en: Journal of Ethnobiology and Ethnomedicine Volumen 16, número 1 (July 2020), p. 1-13 ISSN: 1746-4269
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Resumen en: Inglés |
Resumen en inglés

Background: Home gardens (HGs) are hotspots of in situ agrobiodiversity conservation. We conducted a case study in Tabasco, México, on HG owners’ knowledge of HG ecological, economical and socio-cultural multifunctionality and how it relates to agrobiodiversity as measured by species richness and diversity. The term multifunctionality knowledge refers to owners’ knowledge on how HGs contribute to ecological processes, family economy, as well as human relations and local culture. We hypothesized a positive correlation between owners’ multifunctionality knowledge and their HGs’ agrobiodiversity. Methods: We inventoried all perennial species in 20 HGs, determined observed species richness, calculated Shannon diversity indexes and analysed species composition using non-metric multidimensional scaling (NMDS). Based on literature, semi-structured interviews and a dialogue of knowledge with HG owners, we catalogued the locally recognized functions in the ecological, economic and socio-cultural dimensions. We determined the score of knowledge on each function in the three dimensions on explicit scales based on the interviews and observed management. We determined Spearman rs correlations of HGs’ observed species richness, Shannon diversity index (H) and of HGs’ scores on NMDS-axis and multifunctionality knowledge scores. We dialogued on the results and implications for agrobiodiversity conservation at workshops of HG owners, researchers and local organizations.

Results: HG agrobiodiversity and owners’ multifunctionality knowledge in the study area showed large variation. Average richness was 59.6 perennial species, varying from 21 to 107 species, and total observed richness was 280 species. A total of 38 functions was distinguished, with 14, 12 and 12 functions in the ecological, economic and socio-cultural dimensions. Total multifunctionality knowledge scores varied from 64.1 to 106.6, with an average of 87.2. Socio-cultural functionality knowledge scores were the highest, followed by scores in the ecological and economic dimensions. Species richness and Shannon H were significantly correlated with ecological functionality knowledge (rs=0.68 and P< 0.001 in both cases), and species richness was also correlated with economic functionality knowledge (rs=0.47, P= 0.03). Species composition scores on the first and second axes of NMDS was significantly correlated with knowledge of ecological multifunctionality, with rs= 0.49 resp-0.49 and P= 0.03 in both cases. Other functionality knowledge scores showed no correlation with NMDS scores. Dialogue in workshops confirmed the interwovenness of multifunctionality knowledge and agrobiodiversity. Conclusion: The rich agrobiodiversity of home gardens cherished by rural families in Tabasco relates with the knowledge about HG functionality in the ecological and economic dimensions. Also, species composition relates with ecological functionality knowledge. The socio-cultural functionality knowledge, which includes many elements beyondthe individual HG, is not correlated with agrobiodiversity, but had the highest scores. Our results show that multifunctionality knowledge provides many opportunities for the participative conception and planning of policies and actions necessary to conserve agrobiodiversity.


3.
Artículo
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Resumen en: Inglés |
Resumen en inglés

Background: Reliable information about the spatial distribution of aboveground biomass (AGB) in tropical forests is fundamental for climate change mitigation and for maintaining carbon stocks. Recent AGB maps at continental and national scales have shown large uncertainties, particularly in tropical areas with high AGB values. Errors in AGB maps are linked to the quality of plot data used to calibrate remote sensing products, and the ability of radar data to map high AGB forest. Here we suggest an approach to improve the accuracy of AGB maps and test this approach with a case study of the tropical forests of the Yucatan peninsula, where the accuracy of AGB mapping is lower than other forest types in Mexico. To reduce the errors in field data, National Forest Inventory (NFI) plots were corrected to consider small trees. Temporal differences between NFI plots and imagery acquisition were addressed by considering biomass changes over time. To overcome issues related to saturation of radar backscatter, we incorporate radar texture metrics and climate data to improve the accuracy of AGB maps. Finally, we increased the number of sampling plots using biomass estimates derived from LiDAR data to assess if increasing sample size could improve the accuracy of AGB estimates.

Results: Correcting NFI plot data for both small trees and temporal differences between field and remotely sensed measurements reduced the relative error of biomass estimates by 12.2%. Using a machine learning algorithm, Random Forest, with corrected field plot data, backscatter and surface texture from the L‑band synthetic aperture radar (PALSAR) installed on the on the Advanced Land Observing Satellite‑1 (ALOS), and climatic water deficit data improved the accuracy of the maps obtained in this study as compared to previous studies (R²=0.44 vs R²= 0.32). However, using sample plots derived from LiDAR data to increase sample size did not improve accuracy of AGB maps (R²= 0.26). Conclusions: This study reveals that the suggested approach has the potential to improve AGB maps of tropical dry forests and shows predictors of AGB that should be considered in future studies. Our results highlight the importance of using ecological knowledge to correct errors associated with both the plot‑level biomass estimates and the mis‑match between field and remotely sensed data.


4.
Artículo
Uso de los hongos en el Tacaná
Andrade Gallegos, René Humberto (autor) ; Sánchez, José E. (autor) ;
Disponible en línea
Contenido en: ECOfronteras Volumen 24, número 69 (mayo/agosto 2020), páginas 14-17 ISSN: 2007-4549
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Resumen en: Español |
Resumen en español

Los hongos brindan valiosos aportes a los bosques, y varias especies son un excelente alimento o tienen usos medicinales y biotecnológicos. Muchos presentan formas hermosas, como los que “imitan” cuernos de venado a 2 mil metros sobre el nivel del mar. En la región del Soconuso, y en particular el volcán Tacaná, el reino Fungi mantiene una importante presencia, aunque aún no está del todo documentado el vasto conocimiento que al respecto mantienen los habitantes de la zona.


5.
Artículo
Uso y manejo de la vegetación leñosa en el fundo legal de Yaxcabá, Yucatán, México
Rodríguez Sánchez, Perla Victoria (autora) ; Levy Tacher, Samuel Israel (autor) ; Ramírez Marcial, Neptalí (autor) (1963-) ; Estrada Lugo, Erin Ingrid Jane (autora) (1959-) ;
Contenido en: Acta Botanica Mexicana No. 127, article number e1516 (2020), p. ISSN: 2448-7589
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Resumen en: Español | Inglés |
Resumen en español

Antecedentes y Objetivos: El fundo legal (FL) es una franja de vegetación forestal que delimita periféricamente a los poblados, provee de múltiples servicios ecosistémicos y forma parte de las reservas forestales comunitarias mayas de la Península de Yucatán. El objetivo de este estudio fue describir las formas de uso y manejo de la vegetación leñosa del FL por parte de los habitantes de la comunidad de Yaxcabá, Yucatán, México. Métodos: Dentro del FL se eligieron tres secciones a partir del número de caminos identificados. En cada sección se establecieron ocho parcelas de muestreo de 400 m² (20 × 20 m) y ocho parcelas más en vegetación madura (VM). En cada parcela se midió el diámetro de los tocones y se determinó su identidad taxonómica. Se estimó la riqueza, densidad y área basal de tocones y cada sección se contrastó con sitios con VM fuera del FL y con poca evidencia de aprovechamiento. Se aplicó una encuesta cerrada a la población para detallar las formas de uso local y manejo que los habitantes hacen en el FL. Resultados clave: Se registraron 58 especies útiles que comprenden 42 géneros y 22 familias de angiospermas, donde Fabaceae, Polygonaceae y Ebenaceae fueron las familias más abundantes. El aprovechamiento comprende una amplia variedad de especies y se cosechan pocos individuos pero el uso varía entre rumbos dentro de la comunidad; este aprovechamiento no afecta notablemente la composición de especies entre el FL y la VM. Conclusiones: Aun cuando existen secciones del FL en las que su cobertura vegetal se encuentra degradada, las estrategias de aprovechamiento actual permiten la permanencia y conservación de la composición de especies a nivel local. La intensidad de aprovechamientos en el FL se ve reflejada por una mayor cantidad de caminos y la distancia que hay entre ellos y los recursos forestales que utilizan. Palabras clave: conservación, manejo local, selva mediana subcaducifolia, vegetación secundaria.

Resumen en inglés

Background and Aims: The fundo legal (FL) is a strip of forest vegetation that peripherally delimits the villages, provides multiple ecosystem services and is part of the mayan community forest reserves of the Yucatan Peninsula. The objective of this study was to describe the forms of use and management of FL woody vegetation by the inhabitants of the community of Yaxcabá, Yucatan, Mexico. Methods: Within the FL, three sections were selected based on the number of roads identified. Eight sampling plots of 400 m² (20 × 20 m) and eight more plots of mature vegetation (MV) were established in each section. In each plot the diameter of the stumps was measured and their taxonomic identity was determined. The richness, diversity, density and basal area of the stumps and each section was contrasted with sampling plots with MV outside the FL and with little evidence of use. A closed survey was applied to the local people to detail the forms of local use and management that residents carry out in the FL. Key results: There were 58 useful species that included 42 genera and 22 families of angiosperms, of which Fabaceae, Polygonaceae and Ebenaceae were the most abundant families. Harvesting includes a wide variety of species and few individuals per species are harvested, but the use varies among courses within the community; this use does not significantly affect the composition of species between FL and MV. Conclusions: Even though there are sections of the FL in which its vegetal cover is degraded, the strategies of current use allow the permanence and conservation of the composition of species at the local level. The intensity of exploitation in the FL is reflected by a greater number of roads and the distance between them and the forest resources they use.


6.
- Artículo con arbitraje
Análisis comparativo de la vegetación de fundo legal y la vegetación madura en el poblado de Yaxcabá, Yucatán, México
Rodríguez Sánchez, Perla Victoria (autora) ; Levy Tacher, Samuel Israel (autor) ; Ramírez Marcial, Neptalí (autor) (1963-) ; Estrada Lugo, Erin Ingrid Jane (autora) (1959-) ;
Disponible en línea
Contenido en: Botanical Sciences Vol. 97, no. 1 (2019), p. 50-64 ISSN: 2007-4476
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Resumen en: Español | Inglés |
Resumen en español

Antecedentes: El fundo legal (FL) representa una franja de vegetación que rodea a los poblados de la península de Yucatán. Su principal función es el aprovisionamiento de servicios ecosistémicos. Hipótesis: ¿La composición y estructura de la vegetación leñosa del FL difiere al compararse con vegetación madura (VM)? El FL y la VM son similares en cuanto a su riqueza florística pero no en su estructura. Lugar y fechas de estudio: En VM y vegetación del FL de la cabecera municipal de Yaxcabá, Yucatán durante los meses de febrero a julio de 2017. Métodos: Se realizaron 32 unidades de muestreo (UM) en dos tipos de suelo predominante (hollum y kankab); 24 UM se realizaron dentro del FL y 8 UM en VM. En cada UM se registraron a todos los individuos ≥ 2.5 cm de diámetro. La riqueza y diversidad de especies se comparó entre FL y VM mediante la rarefacción para estandarizar el esfuerzo de muestreo y a través de un modelo lineal y una prueba post hoc se definieron las diferencias estructurales entre ambos tipos de vegetación. Resultados: Los resultados revelaron similitud en la riqueza, densidad de árboles y diversidad de especies entre la vegetación de FL y VM. Sin embargo, el área basal fue significativamente menor en el FL. Conclusiones: Las altas similitudes en composición y parte de la estructura de la vegetación del FL con respecto a la VM, es una fuerte evidencia del aprovechamiento sustentable de la vegetación por los pobladores de Yaxcabá.

Resumen en inglés

Background: The fundo legal (FL) represents a strip of vegetation that surrounds many towns in the Yucatan Peninsula. The main function of the FL is the provision of ecosystem services. Hypothesis: Does the composition and structure of the FL vegetation differ from the mature vegetation (VM) of the Yaxcabá municipal seat? / The FL and the VM are similar in terms of their floristic richness but not in their structure. Place and dates of study: In the VM and the vegetation of the FL of the municipal seat of Yaxcabá, Yucatán from February to July 2017. Methods: They were made 32 sampling units (SU) located in the predominant soil types (hollum and kankab); 24 SU were performed within the FL and 8 SU in the VM. In each SU, all individuals > 2.5 cm in diameter were recorded. The richness and diversity of species was compared between FL and VM through rarefaction to standardize the sampling effect and through a linear model and a post hoc test the structural differences between both types of vegetation could be defined. Results: The results revealed similarity in richness, tree density and species diversity between FL vegetation and VM. However, the basal area was significantly lower in FL. Conclusions: The formal differences between the vegetation structure of the FL with respect to VM show us that the sustainable use of FL is possible.


7.
- Artículo con arbitraje
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Are Mayan community forest reserves effective in fulfilling people's needs and preserving tree species?
Levy Tacher, Samuel Israel ; Ramírez Marcial, Neptalí (coaut.) (1963-) ; Navarrete Gutiérrez, Darío Alejandro (coaut.) ; Rodríguez Sánchez, Perla Victoria (coaut.) ;
Contenido en: Journal of Environmental Management Vol. 245 (September 2019), p. 16-27 ISSN: 0301-4797
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Resumen en: Inglés |
Resumen en inglés

Mayan community forest reserves (MCFR) play an important role in agricultural landscapes in Mexico, as theyprovide forest products and a broad variety of benefits that contribute to improving local people's livelihoods.Nevertheless, academia has generally considered conservation and use of forest resources to be incompatible. Wedescribe the spatial configuration of MCFR, evaluate floristic and structural characteristics of woody vegetation present in selected reserves, and identify social norms that govern use and conservation of MCFR. These reserves largely consist of mature vegetation (80% of total cover); their plant structure is similar to that of the sur-rounding tropical sub-deciduous forest; and they house a large number of endemic species. The MCFR studied contain a total of 146 tree species and cover 11% of the study area, which includes at least 140 villages in thenorth-central part of the Yucatan Peninsula. These reserves are collectively managed and conserved by Mayanpeasants in the interest of the common good. The communities in our study area combine conservation and useof forest resources, and we recommend that in public policy, government agencies and NGOs incorporate MCFRas a model of biological conservation and sustainable natural resource use, taking into account traditionalknowledge and local norms that allow these reserves to function in a sustainable manner.


8.
Capítulo de libro
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The campesino a campesino agroecology movement in Cuba. Food sovereignty and food as a commons
Rosset, Peter Michael (autor) ; Val, Valentín (autor) ;
Contenido en: Routledge Handbook of Food as a Commons Oxon, England : Routledge, 2019 página 251-265 ISBN:978-1-138-06262-7
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9.
Tesis - Doctorado
Conectividad entre el Mar Caribe y la Bahía de Corozal mediada por la migración del macabí, Albula spp. / Addiel Ubandes Pérez Cobb
Pérez Cobb, Addiel Ubandes (autor) ; Schmitter Soto, Juan Jacobo (director) ; Adams, Aron J. (asesor) ; De Jesús Navarrete, Alberto (asesor) ; Heyman, William D. (asesor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2019
Clasificación: TE/597.091309726 / P4
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008780 (Disponible)
Disponibles para prestamo: 1
Resumen en español

Se utilizó un enfoque de métodos mixtos para determinar los movimientos estacionales y regionales del macabí (A. vulpes) en la Bahía de Corozal-Chetumal (CB) y la Costa del Caribe (CC). Se utilizaron entrevistas, cuestionarios, talleres, observación participante y notas de campo para recopilar el conocimiento local sobre tiempo y dirección del movimiento en relación a la estacionalidad, hábitat, alimentación y reproducción. Tambien se utilizaron experimentos de marcado-recaptura para: a) determinar la frecuencia de tallas, abundancia y distancias de migración; b) modelar movimiento y abundancia en asociación a variables bióticas y abióticas; c) modelar movimiento y supervivencia con modelos multi-estado en el programa MARK. Se encontraron tallas significativamente mayores en CC (35 + 4.9 cm) que en CB (media = 28.6 + 4.1 cm), debido a una posible mayor densidad y diversidad de presas en los fondos de pastos marinos de CC. Los movimientos a lo largo de la costa fueron: 1) locales de corta distancia, norte-sur y sur-norte, en ámbitos hogareños (distancias > 3.5 km), asociados con la alimentación y en secas y lluvias (febrero a octubre) durante altas temperaturas, y 2) migraciones de larga distancia (> 10 km) ida y vuela de este-oeste y oeste-este, entre CB y dos sitios de agregación de pre-desove (APD) en el norte de Belice y durante los nortes (noviembre a enero) cuando las temperaturas fueron más bajas. El movimiento resultó en: a) mayor abundancia de tallas pequeñas (<22 cm) en CB durante secas y lluvias y una mayor abundancia de tallas grandes (> 22 cm) en CC durante nortes, y b) menor sobrevivencia en CB que en CC durante nortes debido a la migración. El macabí como una especie sombrilla tiene implicaciones y se recomienda que Belice y México desarrollen una estrategia binacional de conservación y manejo de los hábitats de forrajeo y APD para mantener poblaciones saludables.

Índice

1.0 Resumen
2.0 Capítulo I
Introducción
2.1 Introducción general
2.2 Objetivos
2.3 Hipótesis
3.0 Capítulo II
Artículo aceptado: Connectivity mediated by seasonal bonefish (Albula vulpes) migration between the Caribbean Sea and a tropical estuary of Belize and Mexico
4.0 Capítulo III
Artículo sometido: Influence of environmental variables on abundance and movement of bonefish (Albula vulpes) between the Caribbean Sea and a tropical estuary of Belize and Mexico
5.0 Capítulo IV
Artículo por ser enviado: Using mark-recapture to estimate survival, recapture probability and movement of bonefish (Albula vulpes) in the Caribbean Sea and a tropical estuary in Belize and Mexico
6.0 Capítulo IV
6.1 Discusión y conclusiones
6.2 Recomedaciones
7.0 Literatura Citada
8.0 Anexos 8.1 Anexo 1: Tabla 1. Diversidad de Albula spp. en la región Atlántico Oeste y la región del Indo-Pacífico
8.2 Anexo 2: Formatos de campo


10.
- Artículo con arbitraje
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Connectivity mediated by seasonal bonefish (Albula vulpes) migration between the Caribbean Sea and a tropical estuary of Belize and Mexico
Pérez Cobb, Addiel Ubandes (autor) ; Schmitter Soto, Juan Jacobo (autor) ; Adams, Aaron J. (autor) ; Heyman, William D. (autor) ;
Contenido en: Environmental Biology of Fishes Vol. 102, no. 2 (February 2019), p. 197-207 ISSN: 0378-1909
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Resumen en: Inglés |
Resumen en inglés

Bonefish (Albula vulpes) are an important resource for catch-and-release fishing in the Caribbean Sea. Understanding movements within and between the Caribbean Coast (CC) and Chetumal-Corozal Bay (CB) in Mexico and Belize is crucial for identifying and protecting home ranges, migration routes, pre-spawning and spawning sites. We used a mixed-methods approach to document dynamics of bonefish movement. We collected fishers’ local knowledge (LK) using qualitative methods including workshops, key informant interviews, participant observation and field notes about bonefish seasonal movements. We then used mark-recapture (8816 tagged, 569 recaptured) method to understand bonefish movements by size, location and season. Bonefish were significantly larger in CC than in CB. We documented several seasonal movement patterns. A southward movement within CB during the rainy season was likely driven by salinity changes. This was followed by an eastward long-distance migration during the norths or cold front season between the bay and the Caribbean Sea, likely for spawning, as we document likely spawning readiness, pre-spawning behavior and synchronized to the fore-reef at one of two pre-spawning aggregation sites in a World Heritage Site in the CC of Belize during November and December of 2018. There was then a northward movement during the dry season as a journey back to home ranges. The information presented herein can inform resource management and protected areas planning towards a bi-national conservation and management of bonefish and its habitats.