11 results on '"Mario J. Gómez-Martínez"'
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2. Tree Assemblages in Agroforestry Systems with Different Intensity of Management in Veracruz, Mexico
- Author
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Mario J. Gómez-Martínez, Gabriel Díaz-Padilla, Fabien Charbonnier, Gabriela Sánchez-Viveros, and Carlos Roberto Cerdán-Cabrera
- Subjects
abundancia ,Coffea arabica ,diversidad arbórea ,género Inga ,riqueza ,Human ecology. Anthropogeography ,GF1-900 ,Natural history (General) ,QH1-278.5 - Abstract
The potential of agroforestry systems (AFS) to conserve biological diversity is widely recognized. There are abundant reports about how tree cover complexity within AFS is related to the abundance of several taxa, but there is scant information regarding how this complexity is related to management intensification. Shade-tree abundance and richness of 15 plots (20 x 50 m) were surveyed with the aim to understand how tree assemblage changes in farms under different management conditions, within a cloud forest formerly zone, which changed to coffee plantations approximately 200 years ago. There was a total of 178 tree individuals, included in 17 families, 24 genera and 33 species. Fabaceae family overcame with 11 species, reaching 60% of the total abundance. Inga was the most common genus with six species. Tree species assemblage within coffee-ASF is highly related to farmers´ decisions regarding productivity, whilst tree cover is kept. This is a positive fact in order to conserve biodiversity and supply ecosystem services.
- Published
- 2018
- Full Text
- View/download PDF
3. Trichoderma Biomass as an Alternative for Removal of Congo Red and Malachite Green Industrial Dyes
- Author
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Rosalba Argumedo-Delira, Mario J. Gómez-Martínez, and Ramiro Uribe-Kaffure
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industrial dyes ,T. virens ,T. viride ,fresh fungal biomass ,dry fungal biomass ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The present study evaluated the removal efficiency of two dyes, Congo red (CR) and malachite green (MG), using either fresh or dry fungal biomass of two species of Trichoderma (T. virens and T. viride) and activated carbon. After 24 h, the CR removal efficiency obtained with fresh biomass was higher than that obtained with activated carbon. For the MG dye, the average removal with activated carbon (99%) was higher than those obtained with dry and fresh biomass of T. viride and T. virens. Experimental results for fresh and dry fungal biomass showed a good correlation with Langmuir isotherms. The adsorption rates of CR and MG by of T. virens and T. viride can be more appropriately described using the pseudo-second-order rate. We found an adsorption capacity of 81.82 mg g−1 for T. virens with MG dye. Results show that fresh or dry biomass of T. virens can represent a simple and cost-effective alternative for removing industrial dyes such as CR and MG.
- Published
- 2021
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4. Fungal Tolerance: An Alternative for the Selection of Fungi with Potential for the Biological Recovery of Precious Metals
- Author
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Rosalba Argumedo-Delira, Mario J. Gómez-Martínez, and Ramiro Uribe-Kaffure
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filamentous fungi ,metals ,secondary sources ,primary sources ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The behavior of various filamentous fungi in the presence of metals such as Cu, Zn, Ni, Fe, Mn, and V has been widely reported. However, there is little information regarding metals such as Au, Ag and Pt that are not in the form of nanoparticles. The growth of eight filamentous fungi was evaluated at increasing doses of Au, Ag and Pt. The fungi were reactivated in Petri dishes with potato dextrose agar. Subsequently, individual mycelial disks from each strain were inoculated in PDA plates with the following doses of AuCl3, Ag2SO4 and PtCl4: 0, 50, 150 and 300 mg L−1, respectively. The plates were then incubated for 20 days—a period in which the diameter of the colony was measured every 24 h. Au showed the highest toxicity for the tested fungi. All silver doses decreased the growth of most of the fungi, while platinum did not cause any inhibitory effect on the growth of the eight tested fungi. With a simple test, it was possible to observe the effect of precious metals (PMs) on the growth of filamentous fungi and consider their possible biotechnological applications in the recovery of PMs from primary or secondary sources.
- Published
- 2020
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5. Gold Bioleaching from Printed Circuit Boards of Mobile Phones by Aspergillus niger in a Culture without Agitation and with Glucose as a Carbon Source
- Author
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Rosalba Argumedo-Delira, Mario J. Gómez-Martínez, and Brenda Joan Soto
- Subjects
metal bioleaching ,energy saving ,filamentous fungi ,fungal consortium ,electronic wastes ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Hydrometallurgical and pyrometallurgical processes to recover gold (Au) from cell-phone printed circuit boards (PCBs) have the disadvantage of generating corrosive residues and consuming a large amount of energy. Therefore, it is necessary to look for biological processes that have low energy consumption and are friendly to the environment. Among the biological alternatives for the recovery of Au from PCB is the use of cyanogenic bacteria and filamentous fungi in cultures with agitation. Considering that it is important to explore the response of microorganisms in cultures without agitation to reduce energy expenditure in the recovery of metals from PCB, the present investigation evaluated the capacity of Aspergillus niger MXPE6 and a fungal consortium to induce Au bioleaching from PCB in a culture medium with glucose as a carbon source and without agitation (pH 4.5). The results indicate that the treatments with PCB inoculated with the fungal consortium showed a considerable decrease in pH (2.8) in comparison with the treatments inoculated with A. niger MXPE6 (4.0). The fungal consortium showed a significantly higher Au bioleaching (56%) than A. niger MXPE6 (17%). Finally, the use of fungal consortia grown without agitation could be an alternative to recover metals from PCB, saving energy and material resources.
- Published
- 2019
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6. Formation of silver halos by Sphingomonas paucimobilis MX8 and its bioleaching of silver from computer keyboard printed circuit boards
- Author
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Rosalba Argumedo-Delira, María Esther Díaz-Martinez, and Mario J. Gómez Martínez
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Media Technology ,Microbiology - Published
- 2023
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7. Predation of the invasive gecko Hemidactylus angulatus Hallowell, 1854 (Squamata: Gekkonidae) by the wandering spider Ancylometes bogotensis Keyserling, 1877 (Araneae: Ctenidae) in Tolima, Colombia
- Author
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Cristian Alfonso Gallego-Carmona, Camila Castellanos Vargas, and Mario J Gómez-Martínez
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Tropical and subtropical dry broadleaf forests ,Hemidactylus ,Spider ,Squamata ,biology ,Museology ,Wandering spider ,Zoology ,Gecko ,Conservation ,biology.organism_classification ,Gekkonidae ,Predation - Abstract
We report the predation on the gecko Hemidactylus angulatus by the spider Ancylometes bogotensis, in the Tropical Dry Forest life zone located at Northern Tolima (Colombia). This short note is a contribution to the knowledge about the natural history of the referenced species because of the potential of A. bogotensis as a biological control agent of geckos that decreases its invasive potential. This is important due to the possibility to make populations of the gecko decline and to restrict the entry of these saurians to natural forested areas.
- Published
- 2020
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8. Presencia de Eleutherodactylus johnstonei (ANURA: ELEUTHERODACTYLIDAE) en Ibagué, Tolima, Colombia: el papel de los viveros comerciales
- Author
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Angela M. Cortés-Gómez, Mario J Gómez-Martínez, and Julián Llano-Mejía
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contaminación acústica ,anuran ,anuro ,Museology ,Conservation ,introduced species ,especies introducidas ,Geography ,noise polution ,Fusagasuga ,Fusagasugá ,potential invasion ,plantas ornamentales ,ornamental plants ,potencial de invasión - Abstract
La rana Coquí de las Antillas Eleutherodactylus johnstonei, es considerada una especie invasora de varios países de Centro y Sur América, la cual puede ocasionar efectos negativos al poner en riesgo la salud del hombre, debido a su aguda vocalización tornándose contaminación auditiva y por ser portadora de parásitos. Con el fin de identificar la fuente de introducción y los mecanismos de dispersión de la especie se reporta y se describe la contribución de los viveros comerciales de la ciudad de Ibagué con la llegada deE. johnstoneia la ciudad y de su posterior dispersión a las zonas residenciales por medio del transporte de plantas ornamentales. Individuos de la especie fueron observados en zonas residenciales y comerciales del centro de la ciudad en 2011, 2012 y 2013. Por medio de visitas nocturnas a viveros y recorridos por la ciudad se identificó la presencia de la especie en nueve de los 12 viveros visitados así como también el registro auditivo en siete barrios residenciales de la ciudad. Entrevistas semiestructuradas con viveristas permitieron identificar que la principal zona de donde se surten las plantas de los viveros ibaguereños es el departamento de Cundinamarca específicamente de los municipios de Fusagasugá y Mesitas del Colegio. Se reporta por primera vez aE. johnstoneien la localidad de Chinauta, Fusagasugá (Cundinamarca). Dadas las implicaciones biológicas y los potenciales impactos económicos de la invasión es necesario plantear estrategias de mitigación que conduzcan a controlar la presencia de la especie en los viveros mayoristas y a los de Ibagué para evitar la dispersión a otras zonas de la ciudad y el país. The "Antilles coquí" frog, Eleutherodactylus johnstonei, is considered an invasive species in several countries of Central and South America which can cause negative effects by putting at risk the health of humans because of its sharp chanting becoming auditory contamination, as well as for being carrier of parasites. In order to identify sources of introduction and mechanisms of dispersion of the species, the contribution of commercial garden centers in the city of Ibagué is reported and described in this article, with the arrival ofE. johnstoneito the city and its subsequent dispersion in residential areas through the transportation of ornamental plants. Individuals of the species were observed in residential and commercial downtown areas in 2011, 2012 and 2013. During night visits to commercial garden centers in the city, the presence of the species was identified in nine of the 12 commercial garden centers visited, as well as the acoustic record was done in seven neighborhoods in the city. Semi-structured interviews with keepers helped identifying that the main area from where the plants come is the department of Cundinamarca, specifically from the municipalities of Fusagasugá and Mesitas del Colegio. TheE. johnstoneiwas reported for the first time in the town of Chinauta, Fusagasugá (Cundinamarca). Given the biological implications and potential economic impacts of the invasion, it is necessary to propose mitigation strategies leading to control the presence of the species in wholesale commercial garden centers and those of Ibagué in order to prevent the dispersion to other areas of the city and the country.
- Published
- 2016
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9. Microorganisms and Plants in the Recovery of Metals from the Printed Circuit Boards of Computers and Cell Phones: A Mini Review
- Author
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María Esther Díaz-Martínez, Rosalba Argumedo-Delira, and Mario J. Gómez-Martínez
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lcsh:TN1-997 ,Waste management ,business.industry ,020209 energy ,Metals and Alloys ,plant ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Electronic waste ,Electronic equipment ,electronic waste ,Mini review ,Biotechnological process ,phytoextraction ,Printed circuit board ,0202 electrical engineering, electronic engineering, information engineering ,Environmental science ,Microelectronics ,General Materials Science ,fungi ,bacteria ,business ,lcsh:Mining engineering. Metallurgy ,0105 earth and related environmental sciences - Abstract
Most electrical and electronic equipment contain a printed circuit board (PCB), which is the board on which microelectronic components are mounted. The PCBs of obsolete and discarded electrical and electronic equipment are a material of great value due to their high metal content that is of commercial importance (i.e., Au, Ag, Pd, Pt, Ir, Ti, Ge, Si, Al, Cu, Ni, Zn, Fe, Sn, As, and Pb). Hydrometallurgical and pyrometallurgical methods have been used to extract metals from PCBs; however, these methods have energy and environmental disadvantages, which is why in recent years sustainable alternatives have been sought. Among these alternatives are the biological methods that contemplate the use of microorganisms and plants to recover metals from PCBs. In this review, only studies specifying the use of bacteria, fungi, and plants in the recovery of metals from the PCBs of computers and cell phones were considered, since the metallic composition of these plates varies according to the electronic equipment. In addition, the challenges and recommendations for these biotechnological processes to be improved and implemented at the industrial level in the coming years are discussed.
- Published
- 2020
- Full Text
- View/download PDF
10. PERCEPCIÓN LOCAL ACERCA DE LA CALIDAD DEL AGUA Y LA HERPETOFAUNA EN FINCAS GANADERAS DEL MUNICIPIO DE MATIGUÁS, NICARAGUA
- Author
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Mario J Gómez-Martínez, Isabel Gutiérrez-Montes, and Fabrice DeClerck
- Subjects
capital natural ,genetic structures ,media_common.quotation_subject ,Biodiversity ,Anfibios ,Community Capital Framework ,biodiversidad ,Education ,Amphibians ,local knowledge ,reptiles ,Environmental protection ,Socioeconomics ,biodiversity ,General Environmental Science ,media_common ,natural capital ,business.industry ,conocimiento local ,Geography ,Marco de los Capitales de la Comunidad ,Livestock ,Water quality ,business ,Welfare ,Diversity (politics) - Abstract
bienestar, la calidad del agua y la diversidad de herpetofauna fueron examinadas usando entrevistas semiestructuradas a los productores y a las instituciones locales. Las entrevistas se utilizaron para desarrollar indicadores enmarcados en los capitales de la comunidad y validados a través de cuatro talleres. Los resultados indicaron que los productores tienen percepciones similares respecto a las relaciones entre la calidad del agua y la biodiversidad. Los productores comentaron que la cantidad de agua ha ido disminuyendo, aunque la mayoría de los productores no perciben una relación entre la calidad del agua, la salud humana o la salud del ganado. Hubo una ausencia significativa de las instituciones locales, la promoción y la financiación de proyectos de conservación de la biodiversidad, el acceso y almacenamiento de agua. En cuanto a la herpetofauna, las respuestas de los productores se han centrado en las funciones medicinales, alimenticias y controladores biológicos que estos organismos proveen. La mayoría de los productores entrevistados afirmaron que la incorporación de sistemas silvopastoriles en fincas ofrece beneficios, incluida la mejora de la calidad del agua y la conservación de la biodiversidad agrícola. Los productores demostraron conocimientos locales en la ubicación de las fuentes de agua y el uso tradicional de la herpetofauna.AbstractPerceptions of livestock producers regarding their welfare, water quality and herpetofauna diversity were examined using semistructured interviews with farmers and local institutions. Interviews was used to develop indicators framed in community capitals and validated through four workshops. The results indicated that producers have similar perceptions of the relationships between water quality and biodiversity. Producers indicated that the amount of water has been declining, although most producers do not perceive a relationship between water quality, human health or livestock health. There was a significant absence of: local institutions, biodiversity conservation projects promotion and financing, access and water storage. Regarding the herpetofauna, the’ responses of producers have focused on medicinal, nutritional functions and biological regulation that these organisms provide. Most farmers interviewed stated that the incorporation ogf agroforestry systems on offers benefits including improved water quality and conservation of agricultural biodiversity. Farmers demonstrated local knowledge in locating water sources and in the traditional use of herpetofauna. bienestar, la calidad del agua y la diversidad de herpetofauna fueron examinadas usando entrevistas semiestructuradas a los productores y a las instituciones locales. Las entrevistas se utilizaron para desarrollar indicadores enmarcados en los capitales de la comunidad y validados a través de cuatro talleres. Los resultados indicaron que los productores tienen percepciones similares respecto a las relaciones entre la calidad del agua y la biodiversidad. Los productores comentaron que la cantidad de agua ha ido disminuyendo, aunque la mayoría de los productores no perciben una relación entre la calidad del agua, la salud humana o la salud del ganado. Hubo una ausencia significativa de las instituciones locales, la promoción y la financiación de proyectos de conservación de la biodiversidad, el acceso y almacenamiento de agua. En cuanto a la herpetofauna, las respuestas de los productores se han centrado en las funciones medicinales, alimenticias y controladores biológicos que estos organismos proveen. La mayoría de los productores entrevistados afirmaron que la incorporación de sistemas silvopastoriles en fincas ofrece beneficios, incluida la mejora de la calidad del agua y la conservación de la biodiversidad agrícola. Los productores demostraron conocimientos locales en la ubicación de las fuentes de agua y el uso tradicional de la herpetofauna.AbstractPerceptions of livestock producers regarding their welfare, water quality and herpetofauna diversity were examined using semistructured interviews with farmers and local institutions. Interviews was used to develop indicators framed in community capitals and validated through four workshops. The results indicated that producers have similar perceptions of the relationships between water quality and biodiversity. Producers indicated that the amount of water has been declining, although most producers do not perceive a relationship between water quality, human health or livestock health. There was a significant absence of: local institutions, biodiversity conservation projects promotion and financing, access and water storage. Regarding the herpetofauna, the’ responses of producers have focused on medicinal, nutritional functions and biological regulation that these organisms provide. Most farmers interviewed stated that the incorporation ogf agroforestry systems on offers benefits including improved water quality and conservation of agricultural biodiversity. Farmers demonstrated local knowledge in locating water sources and in the traditional use of herpetofauna.
- Published
- 2014
- Full Text
- View/download PDF
11. Four-eyed opossum (Philander opossum) predation on a coral snake (Micrurus nigrocinctus)
- Author
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Mario J. Gómez-Martínez, Fabrice DeClerck, and Allan Gutierrez
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biology ,Opossum ,Philander opossum ,Micrurus nigrocinctus ,Bothrops ,Zoology ,Animal Science and Zoology ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics ,Predation ,Coral snake - Published
- 2008
- Full Text
- View/download PDF
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