A pre-pandemic study about recreational uses in the Mexico Park located at Mexico City (year 2017)

Ramiro Flores-Xolocotzi Sergio Ceballos (2022, [Artículo, Artículo])

A recreational study was carried out through surveys in the Parque México in Mexico City. For this, the relationship between visit patterns with socioeconomic information, uses and perceptions of visitors with 18 years old or older was analyzed. This research uses descriptive statistics and a non-linear canonical correlation analysis to analyze relationships between variables. An ordered probit regression was also performed to determine the variables that explain the frequency of recreational use. It was obtained that the Park mainly receives visitors with at least bachelor's degree (78.6%) and high incomes (more than 50% have a monthly family income higher than $10,000.00 pesos and 27.6% receive more than $30,000.00 per month). Considering the results, the conclusions are that although the highest percentage of the studied population comes from neighborhoods outside the Roma-Condesa Corridor: then the visitors who live in the Corridor and who have higher incomes, have weight in the description of the model. The results allow to conclude too, that higher income increases the frequency of use. It is also observed that the park is used during the Monday to Friday by more than 50% of the population of visitors and with a high percentage of use in the mornings.

urban forestry urban planning leisure green areas correlación canónica no lineal parque urbano probit recreación CIENCIAS SOCIALES CIENCIAS SOCIALES

Transpiration of a tropical dry deciduous forest in Yucatan, Mexico

EVELYN RAQUEL SALAS ACOSTA José Luis Andrade Torres Jorge Perera ROBERTH ARMANDO US SANTAMARIA bernardo figueroa-espinoza Jorge M. Uuh-Sonda EDUARDO CEJUDO ESPINOSA (2022, [Artículo])

The study of forest hydrology and its relationships with climate requires accurate estimates of water inputs, outputs, and changes in reservoirs. Evapotranspiration is frequently the least studied component when addressing the water cycle; thus, it is important to obtain direct measurements of evaporation and transpiration. This study measured transpiration in a tropical dry deciduous forest in Yucatán (Mexico) using the thermal dissipation method (Granier-type sensors) in representative species of this vegetation type. We estimated stand transpiration and its relationship with allometry, diameter-at-breast-height categories, and previously published equations. We found that transpiration changes over time, being higher in the rainy season. Estimated daily transpiration ranged from 0.562 to 0.690 kg m–2 d–1 in the late dry season (April–May) and from 0.686 to 1.29 kg m–2 d–1 in the late rainy season (September–October), accounting for up to 51% of total evapotranspiration in the rainy season. These daily estimates are consistent with previous reports for tropical dry forests and other vegetation types. We found that transpiration was not species-specific; diameter at breast height (DBH) was a reliable way of estimating transpiration because water use was directly related to allometry. Direct measurement of transpiration would increase our ability to accurately estimate water availability and assess the responses of vegetation to climate change. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

SAP FLUX SEASONALITY STAND TRANSPIRATION EVAPOTRANSPIRATION DRY DECIDUOUS FOREST BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA VEGETAL (BOTÁNICA) ECOLOGÍA VEGETAL ECOLOGÍA VEGETAL

Enviromic prediction enables the characterization and mapping of Eucalyptus globulus Labill breeding zones

Germano Costa Neto Jose Crossa (2024, [Artículo])

Forest Tree Breeding Genomic Relationship Matrix Genomic Selection Best Linear Unbiased Prediction CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA FOREST TREES BREEDING MARKER-ASSISTED SELECTION MYRTACEAE EUCALYPTUS GLOBULUS

Uso tradicional de plantas: patrimonio de las comunidades indígenas del Parque Nacional Lagunas de Montebello

NAYELY MARTINEZ MELENDEZ Manuel Martínez Meléndez JUANA PATRICIA HERNANDEZ RODRIGUEZ MAURICIO JOSE RIOS (2022, [Artículo])

El Parque Nacional Lagunas de Montebello en Chiapas (México) y su zona de influencia se caracterizan por ser áreas de gran diversidad biológica. Las comunidades indígenas de esta región usan las plantas como un recurso aprovechable que puede satisfacer sus necesidades. Nuestro objetivo fue documentar las especies de uso tradicional y de valor ecológico que las personas reconocen en su localidad. Se realizaron recorridos de campo y talleres comunitarios en los cuales identificamos 88 especies de plantas útiles, la mayoría árboles. Identificar la riqueza de especies del entorno en que viven, es una forma de encaminar acciones de desarrollo enfocadas en la conservación y el manejo de sus recursos forestales como medios de vida.

CHIAPAS ETNOBOTANICA MANEJO DE RECURSOS FORESTALES MUNICIPIO LA TRINITARIA BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA VEGETAL (BOTÁNICA) ECOLOGÍA VEGETAL ECOLOGÍA VEGETAL

Gestión y operación de Unidades de Manejo para la Conservación de la Vida Silvestre (UMA) : Producción y comercialización de la palma “pata de vaca” (Chamaedorea ernesti-augusti), en la selva Lacandona

GABRIELA BUDA ARANGO (2022, [Libro])

"El objetivo principal de este manual es compartir información, principalmente con técnicos y productores de palma camedor, sin descartar a funcionarios públicos, de varios niveles, encargados del diseño y/o instrumentación de políticas públicas ambientales en México. Es también una invitación a reflexionar, a partir de dos casos particulares, sobre las dificultades que un instrumento de política pública, como la UMA, enfrenta al momento de ser puesta en marcha en realidades complejas y heterogéneas, características de un país megadiverso como México. Sin duda, este escenario influye en el desempeño de un instrumento para alcanzar los objetivos para los cuales se diseñó. Estas páginas son un atisbo al peregrinar burocrático que los usuarios de las UMA de palma camedor tienen que recorrer para cumplir con la normatividad, y son un bosquejo de la complejidad que conllevan los procesos de gestión comunitaria requeridos para registrar y operar una UMA de propiedad social. Esta información es muy importante para explicar por qué muchas UMA de propiedad social no han funcionado. Finalmente, detalla todo el conocimiento de manejo técnico

generado por los palmeros para la producción y criterios de comercialización de la especie “pata de vaca”; lo cual, evidencia que el buen desempeño de una UMA no sólo recae en especificaciones técnicas para el manejo de la especie. Sin duda, aunque la información aquí presentada está enfocada en una especie y un contexto determinado es aplicable para el registro de UMA en propiedad social a lo largo del territorio mexicano".

Palmas -- Cultivo y reproducción -- Selva Lacandona, Chiapas Naturaleza -- Conservación -- Selva Lacandona, Chiapas Bosques y silvicultura -- Productos -- Selva Lacandona, Chiapas Bosques y silvicultura -- Aspectos económicos -- Selva Lacandona, Chiapas HUMANIDADES Y CIENCIAS DE LA CONDUCTA ANTROPOLOGÍA ANTROPOLOGÍA

First record of Band-tailed Pigeon, Patagioenas fasciata (Columbiformes: Columbidae) in the Sonoran Desert of Baja California

Jonathan Gabriel Escobar Flores MARIANA DELGADO FERNANDEZ OSCAR EDUARDO DELGADO GONZALEZ (2016, [Artículo])

"We report the presence of the Band-tailed Pigeon, which was not previously recorded in the Sonoran Desert in Baja California. The site was 140 km south of the nearest forest. The presence of the pigeon further documents the propensity of Band-tailed Pigeons to wander widely."

Baja California Peninsula; Cataviña; desert; forest; riparian vegetation BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) ECOLOGÍA ANIMAL ECOLOGÍA ANIMAL

Assessing the Spatiotemporal Relationship between Coastal Habitats and Fish Assemblages at Two Neotropical Estuaries of the Mexican Pacific

VICTOR MANUEL MURO TORRES FELIPE AMEZCUA MARTINEZ Gerogina Ramírez Ortiz FRANCISCO JAVIER FLORES DE SANTIAGO Felipe Amezcua Linares Yareli Hernández Álvarez (2022, [Artículo])

"Differences in fish assemblages’ structures and their relations with environmental variables (due to the variations in sampled seasons, habitats, and zones) were analyzed in two adjacent estuaries on the north Pacific coast of Mexico. Environmental variables and fish catches were registered monthly between August 2018 and October 2020. Multivariate analyses were conducted to define habitats and zones based on their environmental characteristics, and the effect of this variability on fish assemblages’ composition, biomass, and diversity (α and β) was evaluated. A total of 12,008 fish individuals of 143 species were collected using different fishing nets. Multivariate analyses indicated that fish assemblages’ structures were different between zones due to the presence, height, and coverage of distinct mangrove species. Additionally, depth and salinity showed effects on fish assemblages’ diversity (α and β-nestedness), which presented higher values in the ocean and remained similar in the rest of the analyzed zones and habitats. These results and the differences in species replacement (β-turnover) indicate the singularity of fish assemblages at estuaries (even in areas close to the ocean) and the necessity to establish local management strategies for these ecosystems."

mangrove forests, marine protected areas, alpha diversity, beta diversity, multivariate analyses CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE DINÁMICA DE LAS POBLACIONES DINÁMICA DE LAS POBLACIONES

Contrasting spatial patterns in active-fire and fire-suppressed mediterranean climate old-growth mixed conifer forests

Danny L. Fry  (2014, [Artículo])

In Mediterranean environments in western North America, historic fire regimes in frequent-fire conifer forests are highly variable both temporally and spatially. This complexity influenced forest structure and spatial patterns, but some of this diversity has been lost due to anthropogenic disruption of ecosystem processes, including fire. Information from reference forest sites can help management efforts to restore forests conditions that may be more resilient to future changes in disturbance regimes and climate. In this study, we characterize tree spatial patterns using four-ha stem maps from four old-growth, Jeffrey pine-mixed conifer forests, two with active-fire regimes in northwestern Mexico and two that experienced fire exclusion in the southern Sierra Nevada. Most of the trees were in patches, averaging six to 11 trees per patch at 0.007 to 0.014 ha-1, and occupied 27-46% of the study areas. Average canopy gap sizes (0.04 ha) covering 11-20% of the area were not significantly different among sites. The putative main effects of fire exclusion were higher densities of single trees in smaller size classes, larger proportion of trees (≥56%) in large patches (≥10 trees), and decreases in spatial complexity. While a homogenization of forest structure has been a typical result from fire exclusion, some similarities in patch, single tree, and gap attributes were maintained at these sites. These within-stand descriptions provide spatially relevant benchmarks from which to manage for structural heterogeneity in frequent-fire forest types.

article, climate, controlled study, ecosystem fire history, forest structure, geographic distribution, geographic mapping, land use, mathematical computing, mathematical model, Mexico, spatial analysis, taiga, United States, comparative study, conife CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA