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Investigador titular B de TC del Centro de Investigaciones en Geografía Ambiental, Universidad Nacional Autónoma de México. Miembro del Sistema Nacional de Investigadores, nivel II; miembro de la Academia Mexicana de Ciencias. Líneas de Investigación: Evaluación de tierras en ambiente rurales y urbanos; Cambio climático y agroclimatología; diseño de tecnología agrícola y ambiental
Anahi Aguilera; Francisco Bautista; Margarita Gutiérrez-Ruiz; Agueda E. Ceniceros-Gómez; Rubén Cejudo; Avto Goguitchaichvili. Correction to: Heavy metal pollution of street dust in the largest city of Mexico, sources and health risk assessment. Environmental Monitoring and Assessment 2021, 193, 1 -1.
AMA StyleAnahi Aguilera, Francisco Bautista, Margarita Gutiérrez-Ruiz, Agueda E. Ceniceros-Gómez, Rubén Cejudo, Avto Goguitchaichvili. Correction to: Heavy metal pollution of street dust in the largest city of Mexico, sources and health risk assessment. Environmental Monitoring and Assessment. 2021; 193 (8):1-1.
Chicago/Turabian StyleAnahi Aguilera; Francisco Bautista; Margarita Gutiérrez-Ruiz; Agueda E. Ceniceros-Gómez; Rubén Cejudo; Avto Goguitchaichvili. 2021. "Correction to: Heavy metal pollution of street dust in the largest city of Mexico, sources and health risk assessment." Environmental Monitoring and Assessment 193, no. 8: 1-1.
Cristina Montiel-González; Universidad Nacional Autónoma De México Posgrado En Ciencias Biológicas; Felipe García-Oliva; Francisco Bautista; Oscar Sánchez-Meneses; Universidad Nacional Autónoma De México Instituto De Investigaciones En Ecosistemas Y Sustentabilidad; Universidad Nacional Autónoma De México Centro De Investigaciones En Geografía Ambiental; Universidad Nacional Autónoma De México Centro De Ciencias De La Atmósfera. The global climate change footprint in a Mexican desert ecosystem: The increasing frequency of extreme climatic events. Tecnología y ciencias del agua 2021, 12, 219 -268.
AMA StyleCristina Montiel-González, Universidad Nacional Autónoma De México Posgrado En Ciencias Biológicas, Felipe García-Oliva, Francisco Bautista, Oscar Sánchez-Meneses, Universidad Nacional Autónoma De México Instituto De Investigaciones En Ecosistemas Y Sustentabilidad, Universidad Nacional Autónoma De México Centro De Investigaciones En Geografía Ambiental, Universidad Nacional Autónoma De México Centro De Ciencias De La Atmósfera. The global climate change footprint in a Mexican desert ecosystem: The increasing frequency of extreme climatic events. Tecnología y ciencias del agua. 2021; 12 (4):219-268.
Chicago/Turabian StyleCristina Montiel-González; Universidad Nacional Autónoma De México Posgrado En Ciencias Biológicas; Felipe García-Oliva; Francisco Bautista; Oscar Sánchez-Meneses; Universidad Nacional Autónoma De México Instituto De Investigaciones En Ecosistemas Y Sustentabilidad; Universidad Nacional Autónoma De México Centro De Investigaciones En Geografía Ambiental; Universidad Nacional Autónoma De México Centro De Ciencias De La Atmósfera. 2021. "The global climate change footprint in a Mexican desert ecosystem: The increasing frequency of extreme climatic events." Tecnología y ciencias del agua 12, no. 4: 219-268.
In this study, we developed a method that allows the delimitation of horizons and the quantification of coarse fragments in soil profiles from volcanic areas using digital images. The delineation of the soil profile horizons included the following phases: pre-processing of the digital image, extraction of color systems from the pre-processed image, k-means segmentation of the HSV and CIE L*a*b* color systems, delineation of the horizons, and determination of the horizon characteristics. The coarse fragments were quantified in the following three phases: superpixel analysis of the soil profile image, histogram classification of the image objects, and extraction and quantification of the coarse fragments. For horizon delineation, the HSV color system performed better for the Eutric Andic Cambisol (Loamic, Ochric), and the CIE L*a*b* system performed better for the Eutric Skeletic Mollic Silandic Andosol (Loamic). The RGB image and the S component of the HSV system demonstrated similar coarse fragment volume calculation performance for the Eutric Andic Cambisol (Loamic, Ochric), whereas the S component worked best for the Eutric Skeletic Mollic Silandic Andosol (Loamic). We created a graphic decision-making system for the delineation of soil horizons and for the quantification of coarse fragments in digital images of soil profiles.
Ángeles Gallegos; Felipe García-Oliva; Alberto Pereira-Corona; Francisco Bautista. Digital soil morphometrics of coarse fragments and horizon delineation in soil profiles from Central Mexico. Geoderma Regional 2021, 26, e00403 .
AMA StyleÁngeles Gallegos, Felipe García-Oliva, Alberto Pereira-Corona, Francisco Bautista. Digital soil morphometrics of coarse fragments and horizon delineation in soil profiles from Central Mexico. Geoderma Regional. 2021; 26 ():e00403.
Chicago/Turabian StyleÁngeles Gallegos; Felipe García-Oliva; Alberto Pereira-Corona; Francisco Bautista. 2021. "Digital soil morphometrics of coarse fragments and horizon delineation in soil profiles from Central Mexico." Geoderma Regional 26, no. : e00403.
The design of proxy techniques is an innovative tool to monitor the potentially toxic elements of pollution in road dust. This study evaluated the use of road dust color as a proxy methodology to identify samples contaminated with presumably contaminating elements. FRX determined the concentrations of Fe, Ti, Rb, Sr, Y, Cu, Zn, and Pb in eighty-five road dust samples. The appliance of the RGB system and the Munsell color cards identified five color groups of road dust samples. The discriminant analysis validated these groups by colorimetric indices and presumably contaminating elements. The “very dark gray” color of road dust contains the highest concentrations of Pb, Cu, Zn, and Y. The redness and saturation rates showed high correlations with presumably contaminating elements in “dark gray” and “very dark gray” color samples. The color of road dust, as a proxy technique, allows identifying samples contaminated with presumably contaminating elements.
Yameli Aguilar; Francisco Bautista; Patricia Quintana; Daniel Aguilar; Rudy Trejo-Tzab; Avto Goguitchaichvili; Roberto Chan-Te. Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México. Atmosphere 2021, 12, 483 .
AMA StyleYameli Aguilar, Francisco Bautista, Patricia Quintana, Daniel Aguilar, Rudy Trejo-Tzab, Avto Goguitchaichvili, Roberto Chan-Te. Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México. Atmosphere. 2021; 12 (4):483.
Chicago/Turabian StyleYameli Aguilar; Francisco Bautista; Patricia Quintana; Daniel Aguilar; Rudy Trejo-Tzab; Avto Goguitchaichvili; Roberto Chan-Te. 2021. "Color as a New Proxy Technique for the Identification of Road Dust Samples Contaminated with Potentially Toxic Elements: The Case of Mérida, Yucatán, México." Atmosphere 12, no. 4: 483.
Environmental pollution is a negative externality of urbanization and is of great concern due to the fact that it poses serious problems to human health. Pollutants, such as heavy metals, have been found in urban road dust; however, it is unclear whether the urban form has a role in its accumulation, mainly in cases where there is no dominant unique source. We collected 482 samples of road dust, we determined the concentrations of five heavy metals (Cr, Cu, Pb, Zn, and Ni) using inductively coupled plasma optical emission spectrometry (ICP-OES), and then we derived the pollution load index (PLI). After estimating the mostly anthropogenic origin of these pollutants based on global levels of reference, there were two main aims of this study. Firstly, to analyze the spatial correlation of heavy metals, and secondly, to identify the main factors that influenced the heavy metal concentrations in the road dust of Mexico City. We did this by using a spatial autocorrelation indicator (Global Moran’s I) and applying ordinary least squares (OLS) and spatial regression models. The results indicated low levels of positive spatial autocorrelation for all heavy metals. Most variables failed to detect any relationship with heavy metals. The median strip area in the roads had a weak (significance level of 90%) but consistent positive relationship with Cr, Cu, Ni, Pb, and the PLI. The distance to the airport had a weak (significance level of 90%) and inverse relationship with Pb. Manufacturing units were associated with an increase in Cu (significance level of 95%), while the entropy index was associated with an increase in Ni (significance level of 95%).
Anahi Aguilera; Dorian Bautista-Hernández; Francisco Bautista; Avto Goguitchaichvili; Rubén Cejudo. Is the Urban Form a Driver of Heavy Metal Pollution in Road Dust? Evidence from Mexico City. Atmosphere 2021, 12, 266 .
AMA StyleAnahi Aguilera, Dorian Bautista-Hernández, Francisco Bautista, Avto Goguitchaichvili, Rubén Cejudo. Is the Urban Form a Driver of Heavy Metal Pollution in Road Dust? Evidence from Mexico City. Atmosphere. 2021; 12 (2):266.
Chicago/Turabian StyleAnahi Aguilera; Dorian Bautista-Hernández; Francisco Bautista; Avto Goguitchaichvili; Rubén Cejudo. 2021. "Is the Urban Form a Driver of Heavy Metal Pollution in Road Dust? Evidence from Mexico City." Atmosphere 12, no. 2: 266.
Anahi Aguilera; Francisco Bautista; Avto Goguitchaichvili; Felipe Garcia-Oliva. Health risk of heavy metals in street dust. 2021, 26, 327 -345.
AMA StyleAnahi Aguilera, Francisco Bautista, Avto Goguitchaichvili, Felipe Garcia-Oliva. Health risk of heavy metals in street dust. . 2021; 26 ():327-345.
Chicago/Turabian StyleAnahi Aguilera; Francisco Bautista; Avto Goguitchaichvili; Felipe Garcia-Oliva. 2021. "Health risk of heavy metals in street dust." 26, no. : 327-345.
Two of the major challenges in achieving food security in the future are: (1) the increase in demand for food due to constant high population growth and (2) the increase in adverse climatic conditions, due to global climate change, that will affect crops. Currently, no universal indicators are available to identify the effect of extreme climate events on specific crops of nutritional and commercial importance, as they need to be developed according to each species’ physiology. Likewise, it is necessary to develop production qualifiers that allow us to identify whether the agricultural year presents high or low climatic hazards for a specific crop. In this study of roselle (Hibiscus sabdariffa L.) grown in dryland agricultural conditions in the Bajo Balsas, Michoacán, Mexico, we aimed to 1) generate and validate climatic hazard indicators and 2) propose an equation to calculate annual climatic hazards, considering the different phenological crop stages. We present both phenological and climatic information that is used for the development of 13 agroclimatic hazard indicators that have been proposed for the roselle crop in La Huacana a municipality in Michoacán. Artificial intelligence and neural networks were used for both weight variable identification in the equation and to validate the annual classification, which is derived from the proposed equation. Our proposed equation for the quick assessment of agroclimatic hazards for the roselle crop is a new tool that helps in planning and decision-making in the face of the growing presence of extreme climate events.
Cristina Montiel-González; Carlos Montiel; Alba Ortega; Aristeo Pacheco; Francisco Bautista. Development and validation of climatic hazard indicators for roselle (Hibiscus sabdariffa L.) crop in dryland agriculture. Ecological Indicators 2020, 121, 107140 .
AMA StyleCristina Montiel-González, Carlos Montiel, Alba Ortega, Aristeo Pacheco, Francisco Bautista. Development and validation of climatic hazard indicators for roselle (Hibiscus sabdariffa L.) crop in dryland agriculture. Ecological Indicators. 2020; 121 ():107140.
Chicago/Turabian StyleCristina Montiel-González; Carlos Montiel; Alba Ortega; Aristeo Pacheco; Francisco Bautista. 2020. "Development and validation of climatic hazard indicators for roselle (Hibiscus sabdariffa L.) crop in dryland agriculture." Ecological Indicators 121, no. : 107140.
Elemental concentrations measured in 482 street dust samples from different urban and conurbated areas of Mexico City obtained using a portable energy-dispersive X-ray fluorescence spectrometer are reported. The data quality of eight different elements commonly used in pollution studies is evaluated, calculating the data precision and accuracy obtained with this handheld equipment. Precision for the various elements analyzed ranges between 1.2 and 15.9%, which can be considered as adequately precise for portable equipment. In the case of the accuracy, a maximum under-/overestimation of less than 20% was achieved. Pb and Zn correlation factors were 0.725 and 0.923, respectively. Similar mean Pb concentration values to those reported by ICP-OES were obtained. An average value of ~ 100 mg/kg for Pb concentration was estimated, which is significantly lower than the utmost permissible levels for residential/commercial usage. On the contrary, contamination factors calculated to identify the metal accumulation against those of the background values point from considerable to high contamination for 62 and 30% of the street dust samples analyzed, respectively. A comparison of the results recorded in Mexico City 10 years ago against those obtained suggests that no significant reduction in Pb concentration has occurred during this period despite the measures implemented to stop using leaded gasoline for three decades. Finally, the sample's low-amount requirements, simple nondestructive preparation procedure, and rapid elemental concentration determinations make portable XRF a promising geochemical determination technique for the fast and economic evaluation of contamination by heavy metals in large cities.
Juan Morales; Anahi Aguilera; Francisco Bautista; Rubén Cejudo; Avto Goguitchaichvili; María Del Sol Hernández-Bernal. Heavy metal content estimation in the Mexico City Street dust: an inter-method comparison and Pb levels assessment during the last decade. SN Applied Sciences 2020, 2, 1 -13.
AMA StyleJuan Morales, Anahi Aguilera, Francisco Bautista, Rubén Cejudo, Avto Goguitchaichvili, María Del Sol Hernández-Bernal. Heavy metal content estimation in the Mexico City Street dust: an inter-method comparison and Pb levels assessment during the last decade. SN Applied Sciences. 2020; 2 (11):1-13.
Chicago/Turabian StyleJuan Morales; Anahi Aguilera; Francisco Bautista; Rubén Cejudo; Avto Goguitchaichvili; María Del Sol Hernández-Bernal. 2020. "Heavy metal content estimation in the Mexico City Street dust: an inter-method comparison and Pb levels assessment during the last decade." SN Applied Sciences 2, no. 11: 1-13.
Since the Late Preclassic, the ball court has been one of the most widely distributed features throughout Mesoamerican territory. Despite its maximum splendor in sites in the Mayan and Olmec area, this ritual and political phenomenon has important architectural expression within the archaeological complex of La Quemada in Zacatecas. To place this enclosure in an absolute chronological framework, an archaeomagnetic study was carried out on two fire pits within rooms associated with the court and a burnt cavity on one of its walls. The dating exercise for the first fire pit yielded an interval between 931 and 1006 CE as the best estimate of temporality for its last use. Two equally likely intervals were obtained from the second one (693–947 CE and 1463–1623 CE), so it is not possible to rule out any of them. The burnt cavity revealed a single interval between 757 and 980 CE These periods would correspond to the La Quemada Phase and its transition to the Citadel Phase, which was the last period of activity in the area before the ball court was abandoned. However, the dating of fire pit 2, which shows a possible late occupation (1463–1623 CE), could be interpreted as a reoccupation during the Postclassic by Zacatecos groups.
Carlos Torreblanca; Avto Goguitchaichvili; Verónica López; Rubén Cejudo; Juan Morales; Francisco Bautista; Vadim Kravchinsky; Rafael Garcia. Ball court in la quemada, northern Mesoamerica: Absolute chronological contributions through the archeomagnetic study of associated fire pits. Journal of Archaeological Science: Reports 2020, 33, 102558 .
AMA StyleCarlos Torreblanca, Avto Goguitchaichvili, Verónica López, Rubén Cejudo, Juan Morales, Francisco Bautista, Vadim Kravchinsky, Rafael Garcia. Ball court in la quemada, northern Mesoamerica: Absolute chronological contributions through the archeomagnetic study of associated fire pits. Journal of Archaeological Science: Reports. 2020; 33 ():102558.
Chicago/Turabian StyleCarlos Torreblanca; Avto Goguitchaichvili; Verónica López; Rubén Cejudo; Juan Morales; Francisco Bautista; Vadim Kravchinsky; Rafael Garcia. 2020. "Ball court in la quemada, northern Mesoamerica: Absolute chronological contributions through the archeomagnetic study of associated fire pits." Journal of Archaeological Science: Reports 33, no. : 102558.
Industrial and vehicular emissions of particles cause multiple damages to human health due to concentration, size, and composition. These emissions contain magnetic particles; therefore, low-cost properties allow tracking and monitoring them. This study is aimed at identifying the primary sources of magnetic material in 100 samples of urban road dust from San Luis Potosí, Mexico, analyzing the influence of land use and the type of road on these particles. Magnetic susceptibility (χlf) and isothermal remanent magnetization at 0.7 T (IRM0.7T) were determined, as well as the iron and manganese content using X-ray fluorescence. The distribution of particles was examined by land use and type of road through geostatistical maps and variance analysis. The results showed that the iron and manganese content, χlf, and IRM0.7T were positively correlated, indicating a possible common origin. The primary sources identified were the iron smelter and laminator in the industrial park. Urban land use influenced the content of iron, manganese, and magnetic material in urban road dust. The land uses with the more significant transformation (industrial and mixed) presented the highest values of iron, manganese, χlf, and IRM0.7T. On the other hand, vehicular traffic was indirectly assessed through the type of road, influencing the magnetic signal of urban road dust and finding the highest signals in primary and secondary roads. Then, the magnetic properties allowed the tracking and monitoring of magnetic particles from industrial and vehicle emissions.
Anahi Aguilera; Juan Julio Morales; Avto Goguitchaichvili; Felipe García-Oliva; Cynthia Armendariz-Arnez; Patricia Quintana; Francisco Bautista. Spatial distribution of magnetic material in urban road dust classified by land use and type of road in San Luis Potosí, Mexico. Air Quality, Atmosphere & Health 2020, 13, 951 -963.
AMA StyleAnahi Aguilera, Juan Julio Morales, Avto Goguitchaichvili, Felipe García-Oliva, Cynthia Armendariz-Arnez, Patricia Quintana, Francisco Bautista. Spatial distribution of magnetic material in urban road dust classified by land use and type of road in San Luis Potosí, Mexico. Air Quality, Atmosphere & Health. 2020; 13 (8):951-963.
Chicago/Turabian StyleAnahi Aguilera; Juan Julio Morales; Avto Goguitchaichvili; Felipe García-Oliva; Cynthia Armendariz-Arnez; Patricia Quintana; Francisco Bautista. 2020. "Spatial distribution of magnetic material in urban road dust classified by land use and type of road in San Luis Potosí, Mexico." Air Quality, Atmosphere & Health 13, no. 8: 951-963.
To obtain a first indication of the distribution and extent of manganese (Mn) contamination in Mexico City. Mn concentration and load in street dust were analyzed in order to reveal the most contaminated areas. 482 samples of street dust were analyzed through inductively coupled plasma-optical emission spectroscopy. The contamination factor (CF), the geoaccumulation index (Igeo) and the spatial interpolations of the kriging indicator were calculated. A slight influence of anthropogenic activities is detected on the Mn content of street dust. The highest levels of pollution by concentra- tion (Igeo=uncontaminated to moderately contaminated) are grouped towards the city's north (industrial) and center (commercial and high traffic) areas. The areas with the high- est Mn load were located towards the east and northwest areas (Igeo=moderately contaminated). These findings will serve as a baseline to assess future variations in Mn content in Mexico City's environment.
Anahi Aguilera; Francisco Bautista; Avto Gogichaichvili; Margarita Eugenia Gutiérrez-Ruiz; Agueda E Ceniceros-Gómez; Norma Ruth López-Santiago. Spatial distribution of manganese concentration and load in street dust in Mexico City. Salud Pública de México 2020, 62, 147 -155.
AMA StyleAnahi Aguilera, Francisco Bautista, Avto Gogichaichvili, Margarita Eugenia Gutiérrez-Ruiz, Agueda E Ceniceros-Gómez, Norma Ruth López-Santiago. Spatial distribution of manganese concentration and load in street dust in Mexico City. Salud Pública de México. 2020; 62 (2):147-155.
Chicago/Turabian StyleAnahi Aguilera; Francisco Bautista; Avto Gogichaichvili; Margarita Eugenia Gutiérrez-Ruiz; Agueda E Ceniceros-Gómez; Norma Ruth López-Santiago. 2020. "Spatial distribution of manganese concentration and load in street dust in Mexico City." Salud Pública de México 62, no. 2: 147-155.
Kathrin Lisa Kapper; Francisco Bautista; Avto Goguitchaishvili; Maria Felicidad Bógalo; Ruben Cejudo-Ruíz; Miguel Cervantes Solano. The use and misuse of magnetic methods to monitor environmental pollution in urban areas. Boletín de la Sociedad Geológica Mexicana 2020, 72, 1 .
AMA StyleKathrin Lisa Kapper, Francisco Bautista, Avto Goguitchaishvili, Maria Felicidad Bógalo, Ruben Cejudo-Ruíz, Miguel Cervantes Solano. The use and misuse of magnetic methods to monitor environmental pollution in urban areas. Boletín de la Sociedad Geológica Mexicana. 2020; 72 (1):1.
Chicago/Turabian StyleKathrin Lisa Kapper; Francisco Bautista; Avto Goguitchaishvili; Maria Felicidad Bógalo; Ruben Cejudo-Ruíz; Miguel Cervantes Solano. 2020. "The use and misuse of magnetic methods to monitor environmental pollution in urban areas." Boletín de la Sociedad Geológica Mexicana 72, no. 1: 1.
Introduction: Urban dust contains heavy metals (HMs) that pose a risk to human health. Objective: To evaluate the color of urban dust as an indicator of HM pollution. Materials and methods: Color and HMs (Ba, Cr, Cu, Pb, Mn, Ni, V and Zn) were measured in 455 dust samples, and redness and saturation rates were calculated. Based on color, groups of samples were formed using cluster analysis. Multiple regression analysis between HMs and indices by color groups was performed, as well as a Kruskal-Wallis analysis of HMs by color groups. Results and discussion: Urban dust samples were classified as dark grayish brown (I), dark gray (II), dark olive brown (III), very dark gray (IV), grayish brown (V) and black (VI). Multiple linear regressions between color indices and HMs showed high and significant correlation (P < 0.05) in groups I, II, III and IV. Urban dust HMs were generally found in the order Zn > Mn > Ba > Pb > Cu > Cr > Ni > V. Also, Cr, Cu, Ni, Pb and Zn showed significant differences (P < 0.05) among the color groups; the samples from very dark gray to black were the most polluted, and those of dark grayish brown had lower HM contents. Conclusions: Urban dust color is an indicator of heavy metal pollution in Mexico City.
Rafael García; Carmen Delgado; Rubén Cejudo; Anahi Aguilera; Avto Gogichaishvili; Francisco Bautista. The color of urban dust as an indicator of heavy metal pollution. Revista Chapingo Serie Ciencias Forestales y del Ambiente 2019, 26, 3 -15.
AMA StyleRafael García, Carmen Delgado, Rubén Cejudo, Anahi Aguilera, Avto Gogichaishvili, Francisco Bautista. The color of urban dust as an indicator of heavy metal pollution. Revista Chapingo Serie Ciencias Forestales y del Ambiente. 2019; 26 (1):3-15.
Chicago/Turabian StyleRafael García; Carmen Delgado; Rubén Cejudo; Anahi Aguilera; Avto Gogichaishvili; Francisco Bautista. 2019. "The color of urban dust as an indicator of heavy metal pollution." Revista Chapingo Serie Ciencias Forestales y del Ambiente 26, no. 1: 3-15.
Making quantitative evaluations of the environmental functions of the soil in a quantitative way is an urgent necessity for transitioning towards the sustainable use of soils. The objective of this work was to use and improve the Soil and Environment software for soils of volcanic areas, for which the software was not designed to work on. The study was conducted in the volcanic area of Michoacan, Mexico. Nine soil profiles were described; samples were taken from each horizon and the physical and chemical properties of each sample were analyzed. The Soil and Environment software was used to conduct pedoecological evaluations of the soil samples and, subsequently, an evaluation of the environmental functions of the soils and the modeling of scenarios was carried out. The soil profiles studied showed variable properties of hydraulic conductivity, field capacity, air capacity, effective cation exchange capacity, and soil organic carbon. The soils showed very high nutrient retention, high naturalness and sorption of heavy metals, and low cultural and natural archive properties. The Soil and Environment software generally works well with soils of volcanic areas; however, we suggest improvements in the evaluation method of the following functions: naturalness and agricultural quality. Additionally, the estimating method of aeration capacity and hydraulic conductivity should be calibrated for the properties of the volcanic soils. The modeling of scenarios allowed us to identify the soil profiles that are most vulnerable to degradation. The modeling of scenarios provided a clear idea of the negative and positive effects that a change in soil use would have.
Ángeles Gallegos; Dante López-Carmona; Francisco Bautista. Quantitative Assessment of Environmental Soil Functions in Volcanic Zones from Mexico Using S&E Software. Sustainability 2019, 11, 4552 .
AMA StyleÁngeles Gallegos, Dante López-Carmona, Francisco Bautista. Quantitative Assessment of Environmental Soil Functions in Volcanic Zones from Mexico Using S&E Software. Sustainability. 2019; 11 (17):4552.
Chicago/Turabian StyleÁngeles Gallegos; Dante López-Carmona; Francisco Bautista. 2019. "Quantitative Assessment of Environmental Soil Functions in Volcanic Zones from Mexico Using S&E Software." Sustainability 11, no. 17: 4552.
The first diagnose of heavy metal (Cd, Cr, Cu, Fe, Mn, Ni and Pb) concentrations present in Chetumal, Mexico and its spatial distribution was carried out by analyzing 86 samples of urban dust through atomic absorption spectrophotometry. The assessment of the extent of pollution was undertaken by the use of the Mexican Residential Soil Guideline Values, the calculation of the contamination factor and the pollution load index. The results showed concentrations of heavy metals below the Mexican guidelines in the city, except for chromium and lead in a few samples. However, using the contamination factor the concentrations for chromium, lead and copper are exceeded in some samples. The map of pollution load index shows the areas requiring immediate attention from the decision makers.
José Gonzalo Zapata Carbonell; Francisco Bautista Zúñiga; Jaime Rendón Von Osten; Luz Del Carmen Lagunes Espinoza; David De Jesús Palma López; Rubén Cejudo Ruiz; Avto Goguichaichvili; Oscar Frausto Martínez. Geochemical characterization and spatial distribution of heavy metals from urban dust in Chetumal, Mexico. Ingeniería Investigación y Tecnología 2019, 20, 1 -9.
AMA StyleJosé Gonzalo Zapata Carbonell, Francisco Bautista Zúñiga, Jaime Rendón Von Osten, Luz Del Carmen Lagunes Espinoza, David De Jesús Palma López, Rubén Cejudo Ruiz, Avto Goguichaichvili, Oscar Frausto Martínez. Geochemical characterization and spatial distribution of heavy metals from urban dust in Chetumal, Mexico. Ingeniería Investigación y Tecnología. 2019; 20 (3):1-9.
Chicago/Turabian StyleJosé Gonzalo Zapata Carbonell; Francisco Bautista Zúñiga; Jaime Rendón Von Osten; Luz Del Carmen Lagunes Espinoza; David De Jesús Palma López; Rubén Cejudo Ruiz; Avto Goguichaichvili; Oscar Frausto Martínez. 2019. "Geochemical characterization and spatial distribution of heavy metals from urban dust in Chetumal, Mexico." Ingeniería Investigación y Tecnología 20, no. 3: 1-9.
Patricia Fragoso-Servon; Alberto Pereira Corona; Francisco Bautista. The karst and its neighbors: Digital map of geomorphic environments in Quintana Roo. Journal of Cave and Karst Studies 2019, 81, 113 -122.
AMA StylePatricia Fragoso-Servon, Alberto Pereira Corona, Francisco Bautista. The karst and its neighbors: Digital map of geomorphic environments in Quintana Roo. Journal of Cave and Karst Studies. 2019; 81 (2):113-122.
Chicago/Turabian StylePatricia Fragoso-Servon; Alberto Pereira Corona; Francisco Bautista. 2019. "The karst and its neighbors: Digital map of geomorphic environments in Quintana Roo." Journal of Cave and Karst Studies 81, no. 2: 113-122.
David J. Palma-López; Francisco Bautista. Technology and local wisdom: The Maya soil classification app. Boletín de la Sociedad Geológica Mexicana 2019, 71, 249 -260.
AMA StyleDavid J. Palma-López, Francisco Bautista. Technology and local wisdom: The Maya soil classification app. Boletín de la Sociedad Geológica Mexicana. 2019; 71 (2):249-260.
Chicago/Turabian StyleDavid J. Palma-López; Francisco Bautista. 2019. "Technology and local wisdom: The Maya soil classification app." Boletín de la Sociedad Geológica Mexicana 71, no. 2: 249-260.
Introduction: Rainfed agriculture is one of the most vulnerable forms of crop to the effects of climate change producing either drought or excess moisture and thus damaging crops and causing substantial economic damage. In developing countries with scarce resources for technological investment, rainfed agriculture is extremely important for the food production. The sowing of seasonal maize in the Bajo Balsas is for self-consumption, thence the importance of identifying climatic hazard indicators that threaten agricultural production of this culture. The purpose of this study was to build and validate climatic hazard indicators considering the different phenological stages of the plant. Method: First, we identify the climatic variables and characterize the phenological cycle of maize variety that is cultivated in the region; then we elaborate a database with the following daily and monthly climatic parameters: pluvial precipitation, maximum temperature and minimum temperature. We applied data mining with the WEKA software to validate and classify the maize production of 18 years, then, the years were classified by production defining three classes: 1) low hazard: a sinister area from 0 to 10%, without drought reports; 2) moderate hazard: a sinister area from 11 to 50%, with moderate drought reports; 3) high hazard: a sinister area from 51 to 100%, with reports of severe drought. Results: We determined ten climatic hazard indicators of which four correspond to the number of days with precipitation lower than zero in the months of June, July, August and September (DDE0jun, DDE0jul, DDE0aug, DDE0sep); two indicators with rainfall equal to 5 mm for June and August (DDL5jun, DDL5aug); two indicators associated with the maximum temperature of July and August (TX38jul, TX38aug), and two indicators with precipitation equal to or greater than 10 mm in October and November (WDH10oct, WDH10nov). The result of the Kappa statistic was 0.91, indicating a high reliability in the classification of three hazardness categories: high, moderate and low. Conclusion: The proposed method on the validation of climatic hazard with the WEKA software allowed to identify the most important indicators that affect the maize phenological cycle and therefore its yield; the mathematical validation of the method shows three primary indicators, which indicates that there are primary and secondary variables that determine its climatic hazard. The indicators of climatic hazard were automated and adjusted using ICC® (Indicators of Climatic Change) which offers a useful tool for future research on climate hazard analysis of other rainfed crops.
Alba M. Ortega Gómez; Cristina Montiel; Ángeles Gallegos Tavera; Aristeo Pacheco; Francisco Bautista. Climatic hazard indicators for rainfed maize in a developing country: the case of Bajo Balsas, Mexico. Nova Scientia 2019, 11, 26 -52.
AMA StyleAlba M. Ortega Gómez, Cristina Montiel, Ángeles Gallegos Tavera, Aristeo Pacheco, Francisco Bautista. Climatic hazard indicators for rainfed maize in a developing country: the case of Bajo Balsas, Mexico. Nova Scientia. 2019; 11 (22):26-52.
Chicago/Turabian StyleAlba M. Ortega Gómez; Cristina Montiel; Ángeles Gallegos Tavera; Aristeo Pacheco; Francisco Bautista. 2019. "Climatic hazard indicators for rainfed maize in a developing country: the case of Bajo Balsas, Mexico." Nova Scientia 11, no. 22: 26-52.
The composition of urban dust can affect the health of urban populations, making it necessary to study its elemental composition and its sources. Our objectives were: a) to identify the main emission sources of heavy metals, and b) to evaluate the influence of land use and road type on the elemental composition of urban dust. 100 samples of urban dust taken in San Luis Potosí were analyzed using FRX. Descriptive statistics, Pearson’s correlations coefficient, kriging interpolations, and analysis of variance were applied to the data. Cu and Zn were spatially associated with a metallurgical complex and, to a lesser extent, with an industrial park; Ca with fluorite and limestone industries, and Si with the surrounding soils. The highest concentrations of Cu, Zn, and Ca were found in mixed and industrial land uses. On the contrary, the highest concentrations of “natural elements” (Al, K, Si, Rb, and Y) were found in developable land and residential areas. The highest contents of Ca were found in secondary and primary roads. The conclusions were: a) the metallurgical complex is the main source of Cu and Zn, and b) the highest concentrations of Cu, Zn, and Ca were found in mixed and industrial land uses.
Anahi Aguilera; Cynthia Armendariz; Patricia Quintana; Felipe García-Oliva; Francisco Bautista. Influence of Land Use and Road Type on the Elemental Composition of Urban Dust in a Mexican Metropolitan Area. Polish Journal of Environmental Studies 2019, 28, 1535 -1547.
AMA StyleAnahi Aguilera, Cynthia Armendariz, Patricia Quintana, Felipe García-Oliva, Francisco Bautista. Influence of Land Use and Road Type on the Elemental Composition of Urban Dust in a Mexican Metropolitan Area. Polish Journal of Environmental Studies. 2019; 28 (3):1535-1547.
Chicago/Turabian StyleAnahi Aguilera; Cynthia Armendariz; Patricia Quintana; Felipe García-Oliva; Francisco Bautista. 2019. "Influence of Land Use and Road Type on the Elemental Composition of Urban Dust in a Mexican Metropolitan Area." Polish Journal of Environmental Studies 28, no. 3: 1535-1547.
Seven million people die per year of cancer related to environmental pollution. Urban dust (UD) contains particles smaller than 10 μm that affect human health. In Mexico City (CDMX) only one study on UD has been conducted. The objective of this study was to identify the areas most likely to be contaminated by heavy metals (HM) contained in the UD of CDMX. Eighty nine UD samples were collected; the analysis of the HM concentration was made by X-ray fluorescence, and spatial analysis by interpolation with kriging indicator. The percentage of the area with the highest probability that HMs exceeded the maximum permitted limits (MPL) were: Cr (MPL 280 mg/kg), 0.55 %, southwest of the CDMX; Cr (MPL 64 mg/kg), 89 %, all CDMX and most of the conurbated areas (CA); Cu, 17 %, 11 municipalities and the northern CA; Ni, 13 %, center and southwest of the CDMX; Pb (MPL 140 mg/kg), 17.5 %, centric municipalities and the northwest CA; Pb (MPL 400 mg/kg), 2.2 %, centric municipalities and the northwest CA; V, 26 %, centric and southern municipalities and the northeast CA; Zn, 21 %, centric municipalities and the northern CA. Elements with a greater number of sites and contaminated surface are: Cr, Zn, Cu and Pb. The largest HM overlapping sites are those with Cu and Zn associations (15 %), and Cu and Pb associations (13 %). The municipalities Cuauhtémoc, Venustiano Carranza and Gustavo A. Madero are the most contaminated with heavy metals. Siete millones de personas mueren al año por cáncer relacionado con la contaminación ambiental. El polvo urbano (PU) contiene partículas < 10 µm que afectan la salud humana. En la Ciudad de México (CDMX) existe sólo un estudio de PU. El objetivo de este estudio fue identificar las zonas de la CDMX con mayor probabilidad de contaminación por metales pesados (MP) en el PU. Se recolectaron 89 muestras de PU y se midió la concentración de MP por fluorescencia de rayos X. El análisis espacial se realizó mediante interpolación con kriging indicador. El porcentaje de la superficie con mayor probabilidad de que los MP superen los límites máximos permitidos (LMP) fueron: Cr (LMP 280 mg/kg), 0.55 %, suroeste; Cr (LMP 64 mg/kg), 89 %, toda la CDMX y la mayoría de las áreas conurbadas (AC); Cu, 17 %, 11 delegaciones y AC del norte; Ni, 13 %, centro y suroeste; Pb (LMP 140 mg/kg), 17.5 %, delegaciones céntricas y AC del noroeste; Pb (LMP 400 mg/kg), 2.2 %, delegaciones céntricas y AC del noroeste; V, 26 %, delegaciones céntricas y del sur, así como AC del noreste; Zn, 21 %, delegaciones céntricas y AC del norte. Los elementos con mayor número de sitios y superficie contaminada son: Cr, Zn, Cu y Pb. Los sitios con mayor superficie de sobreposición de MP son aquellos con asociaciones entre Cu y Zn (15 %), y Cu y Pb (13 %). Las delegaciones Cuauhtémoc, Venustiano Carranza y Gustavo A. Madero son las más contaminadas con metales pesados.
Carmen Delgado; Instituto De Geofísica Laboratorio Universitario De Geofísica Ambiental; Francisco Bautista; Avto Gogichaishvili; José Luis Cortés-Esquivel; Patricia Quintana; Daniel Aguilar; Ruben Cejudo; Centro De Investigación Y Estudios Avanzados Del Ipn Unidad Mérida Departamento De Física Aplicada. IDENTIFICACIÓN DE LAS ZONAS CONTAMINADAS CON METALES PESADOS EN EL POLVO URBANO DE LA CIUDAD DE MÉXICO. Revista Internacional de Contaminación Ambiental 2019, 35, 81 -100.
AMA StyleCarmen Delgado, Instituto De Geofísica Laboratorio Universitario De Geofísica Ambiental, Francisco Bautista, Avto Gogichaishvili, José Luis Cortés-Esquivel, Patricia Quintana, Daniel Aguilar, Ruben Cejudo, Centro De Investigación Y Estudios Avanzados Del Ipn Unidad Mérida Departamento De Física Aplicada. IDENTIFICACIÓN DE LAS ZONAS CONTAMINADAS CON METALES PESADOS EN EL POLVO URBANO DE LA CIUDAD DE MÉXICO. Revista Internacional de Contaminación Ambiental. 2019; 35 (1):81-100.
Chicago/Turabian StyleCarmen Delgado; Instituto De Geofísica Laboratorio Universitario De Geofísica Ambiental; Francisco Bautista; Avto Gogichaishvili; José Luis Cortés-Esquivel; Patricia Quintana; Daniel Aguilar; Ruben Cejudo; Centro De Investigación Y Estudios Avanzados Del Ipn Unidad Mérida Departamento De Física Aplicada. 2019. "IDENTIFICACIÓN DE LAS ZONAS CONTAMINADAS CON METALES PESADOS EN EL POLVO URBANO DE LA CIUDAD DE MÉXICO." Revista Internacional de Contaminación Ambiental 35, no. 1: 81-100.