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A mathematical model and the simulation of a biofilter for the treatment of gaseous effluents are presented. The mixture included sulfur compounds such as hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide, all dissolved in air. The conditions under which restrictions on ...


Vergara-Fernández, AlbertoAroca, Germán E.Alarcón, N.A.Encina Montoya, Francisco[Modelado y simulacion de un biofiltro para el tratamiento de gases contaminados con compuestos sulfurados][Modeling and simulation of a biofilter for treatment of gas contaminated with sulfur compounds]Modeling and simulation of a biofilter for treatment of gas contaminated with sulfur compounds

Galaxias maculatus (Jenyns, 1842) es un pez gourmet de importancia comercial cuyas pesquerías están sobre-explotadas, siendo esencial el estudio de su biología para desarrollar su tecnología de cultivo (galaxicultura), que se encuentra en etapa piloto. Los objetivos de éste trabajo son: 1) entreg...

Galaxias maculatus (Jenyns, 1842), is a gourmet fish of great commercial importance with overexploited fisheries. So, studies of its biology are essential in order to develop a technology for its cultivation (galaxiculture), which is at a pilot stage. The goals of this work are: 1) to provide a s...


Vega Aguayo, RolandoDantagnan Dantagnan, PatricioMardones Lazcano, AlfonsoValdebenito Isler, IvánZamorano, JoséEncina Montoya, Francisco[Biological bases for whitebait culture Galaxias maculatus (Jenyns, 1842): a review][Bases biológicas para el cultivo del puye Galaxias maculatus (Jenyns, 1842): una revisión]Bases biológicas para el cultivo del puye Galaxias maculatus (Jenyns, 1842): una revisión

En base a avances recientes en teoría de redes ecológicas, se presenta un marco conceptual ad hoc y una propuesta metodológica para la evaluación de la relevancia ecológica de las especies de una comunidad, orientada a la Evaluación de Riesgo Ecológico de sistemas acuáticos en Chile. El procedimi...

Based on recent advances in ecological network theory, we present an ad hoc conceptual framework and a methodological proposal for the evaluation of the ecological relevance of species within a community, oriented towards the Ecological Risk Assessment in Chilean aquatic systems. The procedure is...


Ramos Jiliberto, RodrigoUrbani, PasquinellGaray Narváez, LeslieRazeto Barry, PabloEncina Montoya, FranciscoMedina, Matias[Identification of ecologically relevant species for Ecological Risk Assessment: A proposal from theoretical ecology][Identificación de especies ecológicamente relevantes para la Evaluación de Riesgo Ecológico: Una propuesta desde la ecología teórica]Identificación de especies ecológicamente relevantes para la Evaluación de Riesgo Ecológico: Una propuesta desde la ecología teórica

Macroinvertebrates have been used for decades to evaluate water quality, using measures of diversity, biotic indexes and comparative analysis. The taxonomic level of family allows a general interpretation of the ecological quality of a fluvial system, and is possible to infer the quality of these...

Los macroinvertebrados han sido utilizados por décadas para evaluar la calidad de las aguas, utilizando medidas de diversidad, índices bióticos y comparativos, sugiriendo que el nivel taxonómico de familia permite una buena interpretación general de la calidad ecológica de un sistema fluvial y es...


Figueroa, RicardoRuíz, Víctor HugoEncina Montoya, FranciscoPalma, Alejandro[Simplification in the use of macroinvertebrates in the evaluation of water quality in fluvial systems][Simplificación en el uso de macroinvertebrados en la evaluación de la calidad de las aguas en sistemas fluviales]Simplificación en el uso de macroinvertebrados en la evaluación de la calidad de las aguas en sistemas fluviales

The effects of climate change and the severe anthropization of local river systems have contributed to the alteration of ecological processes, affecting the water quality in these systems and thus generating conditions for the emergence of algal species. In this context, the object of the present...


Encina Montoya, FranciscoFustos, IvoGonzález Alfaro, KaterinaAguayo, CarlosEsse, CarlosFigueroa Hernández, DavidLara Cárdenas, GladysNavarro Cárcamo, Celso[Spectral characterization of didymosphenia geminata under laboratory conditions: Bases for a monitoring and early warning system in river systems of south Central Chile]Spectral characterization of didymosphenia geminata under laboratory conditions: Bases for a monitoring and early warning system in river systems of south Central Chile

Genypterus chilensis is a marine fish of high gastronomic demand, whose capture has declined in recent years due to overfishing. In the development of the farming technology, high mortalities were obtained during egg incubation. The objective of this study is to contribute to the knowledge of fec...


Vega, RolandoSepúlveda, ClaraBarnert, MaicolMardones, AlfonsoMardones Lazcano, AlfonsoEncina Montoya, FranciscoOberti, CarlosRamirez, DiegoEstrada, Juan Manuel[Reproductive capacity of the red cusk-eel Genypterus chilensis (Guichenot, 1848) in captivity]Reproductive capacity of the red cusk-eel Genypterus chilensis (Guichenot, 1848) in captivity

The water quality in the upper and medium zone of Traiguén river in the Araucanía region was studied in the present work. Physico-chemical and microbiological parameters were measured at six sample stations in a zone that goes from close to the origin of the river to the limits of the city of Vic...


Rivera, Nelson R.Encina Montoya, FranciscoPalma, RodrigoMejías, Patricia[La calidad de las aguas en el curso superior y medio del río traiguén. IX región-chile][Superior and medium water quality in traiguén river. IX region-chile]Superior and medium water quality in traiguén river. IX region-chile

A healthy body of freshwater can provide numerous benefits to the society, although currently, the degradation of such ecosystems has been increased due to the establishment of urban areas along its riverbanks. In this study we analyzed the spatial effect of these zones on the water quality, usin...


Correa-Araneda, F.Rivera Jara, ReinaldoUrrutia Estrada, JonathanDe Los Ríos Escalante, PatricioContreras, A.Encina Montoya, Francisco[Efectos de una zona urbana sobre la comunidad de macroinvertebrados bentónicos de un ecosistema fluvial del sur de Chile][Effects of an urban zone on the benthonic macroinvertebrate community of a fluvial ecosystem in southern Chile]Effects of an urban zone on the benthonic macroinvertebrate community of a fluvial ecosystem in southern Chile

Urbanisation is a dominant geographical trend and an important component of global change, with unprecedented implications for socio-economic, cultural and environmental characteristics. However, green areas, including original fragments, can help to conserve native diversity, improving the funct...


Muñoz Pedreros, AndrésGonzález Urrutia, MarilynEncina Montoya, FranciscoNorambuena, Heraldo V.[Effects of vegetation strata and human disturbance on bird diversity in green areas in a city in southern Chile]Effects of vegetation strata and human disturbance on bird diversity in green areas in a city in southern Chile

Galaxias maculatus is an osmeriform native fish of the Southern Hemisphere, in which the crystalline larvae is considered as a luxury delicacy, for this reason, it has been commercially exploited in Chile, Argentina and New Zealand. However, the fisheries have been rapidly decreasing due to the o...


Encina Montoya, FranciscoVega Aguayo, RolandoMardones Lazcano, AlfonsoRueda Leighton, TeresaTello, A.[Characterization of whitebait (Galaxias maculatus) respiratory rates to optimize intensive culture carrying capacities]Characterization of whitebait (Galaxias maculatus) respiratory rates to optimize intensive culture carrying capacities

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