Ellie Anne López-Barrera

Sergio Arboleda University · -IDEASA- Instituto de Estudios y Servicios Ambientales

Resumen A lo largo de los años, los incendios forestales han afectado negativamente a los sistemas ecológicos y a las ciudades. Por ello, es fundamental reforzar las estrategias de gestión del riesgo territorial contra los incendios forestales. En este estudio, validamos dos modelos diferentes de Machine Learning que tienen como propósito calcular...

Throughout the years, wildfires have negatively impacted ecological systems and urban areas. Hence, reinforcing territorial risk management strategies against wildfires is essential. In this study, we built an early alert system (EAS) with two different Machine Learning (ML) techniques to calculate the meteorological conditions of two Colombian are...

Citation: Casallas, A.; Jiménez-Saenz, C.; Torres, V.; Quirama-Aguilar, M.; Lizcano, A.; Lopez-Barrera, E.A.; Ferro, C.; Celis, N.; Arenas, R. Design of a Forest Fire Early Alert System through a Deep 3D-CNN Structure and a WRF-CNN Bias Correction.

Preliminary version of the investment project in the snapper by-products production chain. Case Taganga Magdalena Colombia

Prolonged exposure to 10-micron particulate matter (PM10) is associated with an increase in heart and lung diseases in the sensitive population. The city of Bogotá has been characterized in recent years by presenting air quality alerts related to particulate matter, with Kennedy sector (LK) being one of the most polluted. Additionally, the structur...

Resumen Al hablar de vulnerabilidad ecológica y social, es necesario entender que la vulnerabilidad consiste en la incapacidad de una comunidad para absorber, los efectos de un determinado cambio en su ambiente, es decir, está relacionada, con su inflexibilidad o incapacidad para adaptarse a ese cambio." Y aquí es importante considerar que la vulne...

The aim of this study was to generate and analyze the atlas of the loggerhead turtle blood transcriptome by RNA-seq, as well as identify and characterize thioredoxin (Tnxs) and peroxiredoxin (Prdxs) antioxidant enzymes of the greatest interest in the control of peroxide levels and other biological functions. The transcriptome of loggerhead turtle w...

In Latin America, the levels of pollution have risen considerably in the last few years. 2019, for example, had one of the largest numbers of air quality alerts. These alerts signal an increase in respiratory diseases among the population. For this reason, this paper designs a preventive early alert system for air quality. This system compares thre...

The studies about silver nanoparticles (AgNP) increased in the last years but few is known about their effects in Brazilian neotropical freshwater fish species. The current study investigated the effects of AgNP on adult silver catfish Rhamdia quelen after subchronic oral exposure. After nanoparticle (NP) size and area characterization fish were ad...

RESUMEN En el año 2011, el Distrito Capital adoptó el Plan Decenal de Descontaminación del Aire para Bogotá (PDDAB) 2010-2020, que incluyó medidas enfocadas en la industria y el sector transporte. Una vez cumplido el tiempo de ejecución, se identifica que las concentraciones de PM10 , PM2.5 y las medidas del PDDAB no han sido evaluadas, por tanto n...

El objetivo general del prototipo BuscaPez es generar un sistema que apoye la identificación de especies de peces, y que sirva de interfaz a la calculadora de riesgos de consumo de pescados, que pueden estar contaminados con metales pesados. Inicialmente se había identificado que podía ser difícil para los usuarios, no entrenados, identificar clara...

The presence of metals in soils used for primary economic activities can negatively impact the environment and public health. This research identified soil contamination by heavy metals (Lead, Copper, Zinc, and Manganese) by examining physical and chemical properties (Phosphorus, Potassium, organic carbon, cation exchange capacity, pH, texture, and...

To understand changes in enzyme activity and gene expression as biomarkers of exposure to methylmercury, we exposed loggerhead turtle erythrocytes (RBCs) to concentrations of 0, 1, and 5 mg L−1 of MeHg and de novo transcriptome were assembled using RNA-seq. The analysis of differentially expressed genes (DEGs) indicated that 79 unique genes were dy...

El presente libro presenta resultados de la investigación multidisciplinar Sistema de Información sobre contaminación de peces para consumo humano por metales pesados en Colombia que, desde el año 2017, se interesó por ahondar en las características, nivel y vías de regulación de la contaminacion de peces marinos y dulceacuicolas por de sustancia t...

La energía eléctrica que se utiliza para suplir la demanda energética en varias regiones de Colombia, genera un impacto ambiental negativo (e.g. por la emisión de gases de efecto invernadero) y requiere una alta inversión económica para su producción. Una región especialmente afectada es la región Caribe, el mar caribe colombiano alberga una alta b...

Air quality data from Bogotá, Colombia, show high levels of particulate matter (PM), which often generate respiratory problems to the population and a high economic cost to the government. Since 2016, air quality in the city of Bogotá has been measured through the Bogota Air Quality Index (IBOCA) which works as an indicator of environmental risk du...

El software AQI calcula el índice de calidad del aire según la (Resolución 2254 de 2017) de 5 diferentes columnas de datos, para dos días. Adicionalmente el programa es capaz de validar de forma estadística las salidas de uno o varios modelos, hallando la correlación con las observaciones, calculando el Error Cuadrático Medio (RMSE) y el BIAS. El c...

Climate change causes variations in precipitation and temperature, which disturb hydrological systems and modifies geographic distribution areas, abundances and interactions of fauna with other species (IPCC, 2014). In Colombia, it has been identified that the greatest impacts are associated with the availability of water resources and the alterati...

This study describes the use of erythrocytes (RBCs) of loggerhead turtles as in vitro models for evaluating their toxicity to methylmercury. Blood samples of loggerhead turtles that were born in the Colombian Caribbean were used. The LC50 of RBCs to methylmercury was determined at 96 h using methylmercury concentrations of 0.5-100 mg L −1. Next, th...

El documento muestra la arquitectura del diseño de una herramienta tecnológica para la autogestión de riesgos asociados al consumo de peces contaminados por metales pesados que se pondrá a disposición del publico a través de un portal de consulta en web y un aplicativo celular. Es uno de los productos del proyecto marco SIstema de Información sobre...

This issue of the Working Papers was developed by members of the WATERLAT-GOBACIT Network’s Thematic Area 6, Hydrosocial Basins, Territories, and Spaces. The main focus of TA6, as the name suggests, is the co-construction of hydrosocial processes, manifested as basins, territories or spaces. Within this broad remit, TA6 members address the far-reac...

Fully downloadable at: http://waterlat.org/working-papers-series/volume-6-2019/vol-6-no-1/ This issue of the Working Papers was developed by members of the WATERLATGOBACIT Network’s Thematic Area 6, Hydrosocial Basins, Territories, and Spaces. The main focus of TA6, as the name suggests, is the co-construction of hydrosocial processes, manifested...

Emerging pollutants (EP) are increasingly studied and characterized worldwide to improve the understanding of their environmental and toxicological impacts and their occurrence and behaviors in different environmental systems. Latin America has been subject to both environmental and toxicological impacts due to EP. To better understand these impact...

Los efectos del crecimiento de grandes ciudades modifican ecosistemas que son estratégicos para mantener la biodiversidad y los servicios ecosistémicos dentro de regiones urbanas. Para determinar la variación de las coberturas vegetales a través del tiempo en el sector occidental del humedal Torca-Guaymaral, se realizó un análisis multitemporal de...

Resumen El artículo aborda el caso de la comunidad de pescadores artesanales marítimos "Don Jaca", localizados en Santa Marta, Departamento de Magdalena, en la costa del Mar Caribe, Colombia. La cual denunció una disminución del recurso pesquero a causa de la contaminación marina generada por la actividad portuaria de transporte de carbón, que se d...

INTRODUCCION: En los últimos tiempos se han evidenciado dificultades en los sistemas de control sanitario para hacer frente a nuevos factores de contaminación de alimentos que amenazan su inocuidad, siendo ésta una característica que engloba acciones encaminadas a garantizar la máxima seguridad posible de los alimentos y abarca toda la cadena alime...

Presentación Se presenta la planificación fase I del producto base de datos sobre Metales pesados en peces de consumo en Colombias , y el aplicativo celular Calculadora del Riesgo de Consumo de peces contaminados por metales pesados . Presenta dos componentes de servicio Aplicativo WEB (Escritorio) • Componente de servicio Aplicativo Dispositivos m...

Introducción. El índice de calidad de agua (ICA) incorpora parámetros fisicoquímicos en una ecuación, para determinar la calidad de agua en un lugar y tiempo fijados. Objetivo. Analizar espacio-temporalmente el índice de calidad de agua del sector Guaymaral, a través dos metodologías de medición de cálculo: UWQI y CWQI. Materiales y métodos. Se r...

Introducción. El fenómeno del Niño de 2014-2015 evidenciado en los niveles nacional y regional tuvo impactos en ecosistemas hídricos y en las coberturas vegetales asociadas al mismo. Objetivo. Con el objetivo de establecer la relación entre la variación de la vegetación riparia y la variabilidad climática en el humedal urbano Torca-Guaymaral, se re...

The Torca-Guaymaral wetland is located in a strategic area of ecological connectivity in the northern region of Bogota city. However, the complexity related to the actors and the governance of the territory, have prevented the socio-ecological system development towards a process of environmental preservation, thus resulting in the deterioration of...

It is well known that the early life cycle stages of fishes are highly sensitive to chemical exposure. However, little is known about the effects of pollutants on the other life stages, due the difficulty of experimental/empirical approaches. Here we developed an experiment to evaluate the embryo-larval survival rate of the silver catfish (Rhamdia...

The risk imposed upon society by consumption of foods contaminated with metals and metalloids is an environmental problem attributed to the increasing number of mining extraction activities currently underway in Colombia. The aim of the current study was to determine concentrations of mercury (Hg), lead (Pb), cadmium (Cd), and a metalloid arsenic (...

This chapter is a review of studies in the toxicology of sea turtles and describes some ecotoxicological analytical procedures. A variety of chemical pollutants (heavy metals, persistent organic pollutants and polycyclic aromatic hydrocarbon s) are found in the tissues and bones of sea turtles, including: kidney, muscle, gonads, lung, heart, pancre...

Over the last four decades, threats from anthropogenic activities – such as Bycatch, modification or destruction of critical habitats, and use or consumption of products from turtles – along with inherent life history features of sea turtles have declined severely in population sizes. Recently, through modern research techniques, we have learned so...

El humedal Torca-Guaymaral es considerado un ecosistema estratégico para la ciudad- región. Se encuentra amenazado por la presencia en sus zonas de ronda de rellenos, escombros y demás residuos sólidos y el mal uso del suelo adyacente al cuerpo de agua donde se observan actividades de pastoreo de ganado vacuno y equino, lo que trae como consecuenci...

Dando continuidad al espacio generado en el IX Congreso Latinoamericano de Herpetología en 2012, este simposio pretende difundir experiencias de conservación de tortugas marinas en países de Latinoamérica. Divulgación de las estrategias de conservación desarrolladas en diferentes países contribuye al desarrollo y fortalecimiento de medidas de prote...

Fishing activities are an important economic resource in the Paranaguá Bay, southern Brazil. In this area, there are reports of sea turtles interacting with small-scale fisheries. It was found that the juvenile green-turtle (Chelonia mydas) uses areas disturbed by fishing activity, which puts them at a higher risk of capture. The objective of this...

Over the past few years an important reduction in the number of nesting marine turtle Caretta caretta individuals has been registered in the Colombian Caribbean, raising the question of a possible extinction in the medium-term. A conservation plan is needed. We studied the culture requirements for C. caretta lymphocytes and preliminary karyotype an...

Condiciones óptimas de cultivo de linfocitos y análisis parcial del cariotipo de la tortuga cabezona, Caretta caretta (Testudines: Cheloniidae) en Santa Marta, Caribe Colombiano Abstract: Lymphocyte culture and partial karyotype of the marine turtle Caretta caretta (Testudines: Cheloniidae) in Santa Marta, Colombian Caribbean. Over the past few yea...