21 research outputs found
Almacenamiento de carbono en pastos naturales altoandinos
The aim of the study was to determine the capacity of storage of carbon in species of grasses natural of high andean, between January of 2012 and March of 2013. They were defined two sampling areas in the districts of Huasicancha and Chicche of the county of Huancayo, Junín. The first of the areas was located in the place Pumahuasi (18L 466456E 8628580N) and the second in Vista Alegre (18L 464886E 8642964N), between 3 845 and 3 870 meters of altitude. 10 plants per species were collected at random, between April and May, considering the moment of maximum growth of the plants. The samples were washed and dried off to the atmosphere during 15 days, being completed the drying in a stove to 60 °C, during 48 hours. The determination of the percentage of dry matter of the samples was carried out by the difference between the initial and final weights. While that the determination of the percentage of carbon was carried out through the method of Walkley-Black. The results of the correlation of weight between air biomass and biomass radicular were highly significant r = 0.9856 ** and b = 3.4507. The percentage of the weight of the root regarding that of the air biomass oscillated between 27.93% and 30.20%, respectively. The content of carbon expressed as percentage varied according to the part of the plant and the origin place.El objetivo del estudio fue determinar la capacidad de almacenamiento de carbono en especies de pastos naturales altoandinos, entre enero de 2012 y marzo de 2013. Se definieron dos zonas de muestreo en los distritos de Huasicancha y Chicche de la provincia de Huancayo, Junín. La primera de las zonas se localizó en el paraje Pumahuasi (18L 466456E 8628580N) y la segunda en Vista alegre (18L 464886E 8642964N), entre 3 845 y 3 870 metros de altitud. Se recolectaron 10 plantas completas al azar, entre abril y mayo, considerando el momento de máximo crecimiento de las plantas. Las muestras fueron lavadas y secadas al ambiente durante 15 días, completándose el secado en una estufa a 60 °C, durante 48 horas. La determinación del % de materia seca se realizó por comparación entre los pesos iniciales y finales de las muestras procesadas. Mientras que la determinación del % de carbono se realizó a través del método de Walkley-Black. Los resultados de la correlación de peso entre biomasa aérea y biomasa radicular fueron altamente significativos r = 0,9856** y b = 3,4507. El porcentaje del peso de la raíz respecto al de la biomasa aérea osciló entre 27,93% y 30,20%, respectivamente. El contenido de carbono expresado como porcentaje varió según la parte de la planta y el lugar de procedencia
Storage of carbon in natural grasses high andean
The aim of the study was to determine the capacity of storage of carbon in species of grasses natural of high andean, between January of 2012 and March of 2013. They were defined two sampling areas in the districts of Huasicancha and Chicche of the county of Huancayo, Junín. The first of the areas was located in the place Pumahuasi (18L 466456E 8628580N) and the second in Vista Alegre (18L 464886E 8642964N), between 3 845 and 3 870 meters of altitude. 10 plants per species were collected at random, between April and May, considering the moment of maximum growth of the plants. The samples were washed and dried off to the atmosphere during 15 days, being completed the drying in a stove to 60 °C, during 48 hours. The determination of the percentage of dry matter of the samples was carried out by the difference between the initial and final weights. While that the determination of the percentage of carbon was carried out through the method of Walkley-Black. The results of the correlation of weight between air biomass and biomass radicular were highly significant r = 0.9856 ** and b = 3.4507. The percentage of the weight of the root regarding that of the air biomass oscillated between 27.93% and 30.20%, respectively. The content of carbon expressed as percentage varied according to the part of the plant and the origin place
Adaptación a los cambios ambientales y territoriales
En este libro se abordan temáticas que destacan la adaptación de los distintos sectores de población a los cambios ambientales y territoriales, la cual muestra las respuestas a la incidencia de los estímulos del entorno, económico, social y ambiental. Así, se destaca la exposición de la población a los efectos destructivos de las amenazas y peligros naturales, lo que ha despertado interés en conocer sus causas, prevenir y mitigar el daño. A través de la revisión de estudios se induce la aprehensión de un tema que adquiere importancia en el contexto de los impactos globales, regionales y locales que se producen como consecuencia de la vulnerabilidad estructural característica de los países en desarrollo.En este libro se proponen estrategias de prevención ante la ocurrencia periódica de inundación en San Mateo Atenco, Estado de México y se analizan los factores sociales que inciden en el deterioro del bosque templado en San Lorenzo Huitzitzilapan. También se exponen soluciones para que se mejoren la condición del bosque y la calidad de vida de la población.Proyecto realizado con financiamiento de la Secretaría de Educación Pública-Subsecretaría de Educación Superior-Dirección General de Educación Superior Universitaria. Número del convenio con la SEP: 2017-15-001-017
Analysis of benthic macroinvertebrates biodiversity of Cunas river by means of environmental indicators, Junin-Peru
The objective of the investigation was to analyze of benthic macroinvertebrates biodiversity of Cunas river by means of environmental indicators. Three sampling sectors were defined two contrasting periods. The anthropic pressures evaluation was carried out by means of DBO5 determination contributed by waste water. Water samples were collected for nitrate, phosphate and fecal coliform determination. The measured indicators in situ were: dissolved oxygen, dissolved total solids, conductivity, temperature, pH and turbidity. The benthic macroinvertebrate samples were collected using a Surber net with 250 μm wire netting opening. The anthropic pressure results on the benthic macroinvertebrates were: fish farming waste water DBO5 mean 7.70 mg/L, from livestock activity 869 mg/L and from urban activity 428.3 mg/L. The physicochemical and bacteriological indicator results showed significant differences for conductivity, temperature and dissolved total solids. Four phyla, seven classes, 12 orders and 26 benthic macroinvertebrate families were identified. It is concluded that waste water discharge from livestock and urban activities are significant anthropic pressures on benthic macroinvertebrate biodiversity. The water quality physicochemical and bacteriological indicators, determined according to sector and time sampling are in the ECA range for highland river water. The richness, abundance and benthic macroinvertebrate diversity, according to the sector and time sampling, presented significant differences. DOI: 10.17268/sci.agropecu.2016.01.0
Impactos antropogénicos en la calidad del agua del río Cunas
Objectives: Identify the impacts that generate the anthropogenic activities in the water quality of Cunas river, in Chupaca and Concepción provinces during 2012. Methods: The observational, descriptive and explanation methods were used, the research type is basic and the design is non experimental, longitudinal type. It was defined three sampling sites. Station 1 was located in Angasmayo, the station 2 in Antacusi and the station 3 in La Perla, Chupaca. Water samples were collected in plastic bottles of two liters and in sterile glass flasks to determine the concentration of nitrates and phosphates, and thermo-tolerant coliform bacteria, respectively. Parameters measured in situ were: dissolved oxygen (mg/l), total dissolved solids (mg/l), conductivity (mS/cm), temperature (°C), pH and turbidity (FTU). These mensurations were carried out with portable instruments. The identification and qualitative valuation of impacts were carried out previous identification of the actions of the anthropogenic activities that are developed in the Cunas river. Results: Results of the water quality were: station 1 (Angasmayo), medium quality (65,83); station 2 (Antacusi), medium quality (61,08) and station 3 (La Perla), medium quality (57,18). Conclusions: In the station 1 the impact was lightly moderate, in the station 2 was moderate and in the station 3 was severe.Objetivos: Identificar los impactos que generan las actividades antropogénicas en la calidad del agua del río Cunas, en las provincias de Chupaca y Concepción del departamento de Junín en el año 2012. Métodos: Se utilizaron los métodos de observación, descripción y explicación; el tipo de investigación es básica, y el diseño no experimental, longitudinal. Se definieron tres estaciones de muestreo; la estación 1, se localizó en Angasmayo; la 2, en Antacusi; y la 3, en La Perla, Chupaca. Las muestras de agua fueron colectadas en botellas de plástico de dos litros y en frascos de vidrio estériles para determinar la concentración de nitratos y fosfatos, y coliformes termotolerantes, respectivamente. Los parámetros medidos in situ fueron: oxígeno disuelto (mg/l), sólidos totales disueltos (mg/l), conductividad (mS/cm), temperatura (°C), pH y turbidez (FTU). Estas mediciones se realizaron con equipos portátiles. La identificación y valoración cualitativa de impactos se realizó previa identificación de las acciones de las actividades antropogénicas que se desarrollan en el río Cunas. Resultados: Los resultados de la calidad del agua fueron: estación 1 (Angasmayo), calidad media (65,83); estación 2 (Antacusi), calidad media (61,08); y estación 3 (La Perla), calidad media (57,18). Conclusiones: En la estación 1 el impacto fue ligeramente moderado; en la 2, moderado; y en la 3, severo
Anthropogenic impacts in water quality of Cunas river
Objetivos: Identificar los impactos que generan las actividades antropogénicas en la calidad del agua del río Cunas, en las provincias de Chupaca y Concepción del departamento de Junín en el año 2012. Métodos: Se utilizaron los métodos de observación, descripción y explicación; el tipo de investigación es básica, y el diseño no experimental, longitudinal. Se definieron tres estaciones de muestreo; la estación 1, se localizó en Angasmayo; la 2, en Antacusi; y la 3, en La Perla, Chupaca. Las muestras de agua fueron colectadas en botellas de plástico de dos litros y en frascos de vidrio estériles para determinar la concentración de nitratos y fosfatos, y coliformes termotolerantes, respectivamente. Los parámetros medidos in situ fueron: oxígeno disuelto (mg/l), sólidos totales disueltos (mg/l), conductividad (mS/cm), temperatura (°C), pH y turbidez (FTU). Estas mediciones se realizaron con equipos portátiles. La identificación y valoración cualitativa de impactos se realizó previa identificación de las acciones de las actividades antropogénicas que se desarrollan en el río Cunas. Resultados: Los resultados de la calidad del agua fueron: estación 1 (Angasmayo), calidad media (65,83); estación 2 (Antacusi), calidad media (61,08); y estación 3 (La Perla), calidad media (57,18). Conclusiones: En la estación 1 el impacto fue ligeramente moderado; en la 2, moderado; y en la 3, severo.Objectives: Identify the impacts that generate the anthropogenic activities in the water quality of Cunas river, in Chupaca and Concepción provinces during 2012. Methods: The observational, descriptive and explanation methods were used, the research type is basic and the design is non experimental, longitudinal type. It was defined three sampling sites. Station 1 was located in Angasmayo, the station 2 in Antacusi and the station 3 in La Perla, Chupaca. Water samples were collected in plastic bottles of two liters and in sterile glass flasks to determine the concentration of nitrates and phosphates, and thermo-tolerant coliform bacteria, respectively. Parameters measured in situ were: dissolved oxygen (mg/l), total dissolved solids (mg/l), conductivity (mS/cm), temperature (°C), pH and turbidity (FTU). These mensurations were carried out with portable instruments. The identification and qualitative valuation of impacts were carried out previous identification of the actions of the anthropogenic activities that are developed in the Cunas river. Results: Results of the water quality were: station 1 (Angasmayo), medium quality (65,83); station 2 (Antacusi), medium quality (61,08) and station 3 (La Perla), medium quality (57,18). Conclusions: In the station 1 the impact was lightly moderate, in the station 2 was moderate and in the station 3 was severe