Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
from quebrada » tramo quebrada (Expander búsqueda), o quebrada (Expander búsqueda)
parque from » parque nro (Expander búsqueda)
from quebrada » tramo quebrada (Expander búsqueda), o quebrada (Expander búsqueda)
parque from » parque nro (Expander búsqueda)
1
tesis de grado
Publicado 2023
Enlace
Enlace
The study was carried out in the city of Nauta with the purpose of determining the level of noise pollution and the type of vehicle fleet in the City of Nauta. It is an observational, analytical, retrospective, prospective and longitudinal investigation. The information was obtained from the 72 strategic noise sampling points, distributed among the 9.6 km of travel through the city. Sampling was systematic through direct observation of the perceived phenomenon (traffic noise), using a Class 1 sound level meter, AWA 6228, measurements were made at an average height of 1.5 m, with the microphone protected by an anti-wind screen and calibrated, the frequency of vehicles (vehicle/hours) were recorded for each measurement period, for which the vehicles were classified as motorcycles, motorcycles, vans, cars, and others. The monitoring was carried out in the morning (6:00-8:00), noon (11:00-13...
2
tesis de maestría
Publicado 2025
Enlace
Enlace
Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Animal
3
artículo
Publicado 2019
Enlace
Enlace
The aim of this study was to evaluate the phenotypic characteristics of the Creole cattle of the Huascarán National Park (PNH), Ancash, Peru through zoometric measurements and indexes of productive interest. The study was conducted in a population of Creole cattle in the Llanganuco zone of the PNH. Data were collected from 32 cows bovines. The zoometric measurements were head width (AC), head length (LC), chest girth (PT), body length (LCU), height withers (ALC) and height at the rump (ALG), anterior rump width (AAG), rear rump with (APG) and rump length (LG). Indexes related to meat ability were calculated: transversal pelvic index (IPT) and longitudinal pelvic index (IPL), and ethnological indexes: anamorphosis index (AI), corporal index (IC), pelvic index (PI) and proportionality index (IPR). The data were processed with the statistical program R. The colour and pattern of the coat w...
4
artículo
Publicado 2019
Enlace
Enlace
The aim of this study was to evaluate the phenotypic characteristics of the Creole cattle of the Huascarán National Park (PNH), Ancash, Peru through zoometric measurements and indexes of productive interest. The study was conducted in a population of Creole cattle in the Llanganuco zone of the PNH. Data were collected from 32 cows bovines. The zoometric measurements were head width (AC), head length (LC), chest girth (PT), body length (LCU), height withers (ALC) and height at the rump (ALG), anterior rump width (AAG), rear rump with (APG) and rump length (LG). Indexes related to meat ability were calculated: transversal pelvic index (IPT) and longitudinal pelvic index (IPL), and ethnological indexes: anamorphosis index (AI), corporal index (IC), pelvic index (PI) and proportionality index (IPR). The data were processed with the statistical program R. The colour and pattern of the coat w...
5
artículo
Publicado 2020
Enlace
Enlace
We present the characterization of the aquatic environment, riparian ecosystem and macroinvertebrate communities in 7 basins of the west slope of the Yanachaga Chemillén National Park (PNYCh). The CERA protocol, including the Andean Biotic Index (ABI), the Fluvial Habitat Index (IHF), the Andean Creek Index (Qbr-And) were estimated and the combination of these 3 indexes allowed to calculate the Ecological Status Index of Andean Rivers (ECOSTRIAND) at each sampling point. Additionally the FBI and BMWP-Col indexes were calculated. Sampling was carried out in the 7 basins, between 1800 and 2500 meters of altitude, including the upper basins inside the PNYCh, in the middle and lower basins, both in the buffer zone of the park. We found 179 taxa, 66 families and 14 orders in all basins evaluated. Within the PNYCh, the values of IHF and Qbr-And were optimal, but to go down basins, the indexes...
6
artículo
Publicado 2011
Enlace
Enlace
The diet of Ameiva edracantha Bocourt 1874, a terrestrial diurnal teiid lizard distributed in northwestern Peru and southwestern Ecuador is described for the first time. Stomach contents of fifteen individuals collected from quebrada La Angostura were analyzed. Lepidopteran larvae, coleopterans, orthopterans and spiders were the dominant preys in the lizard’s diet. Snout-vent length and head length, width and height were not correlated to prey length, width and volume. Other parameters such as profitability and prey target selection could be involved in prey selection by A. edracantha.
7
artículo
Publicado 2011
Enlace
Enlace
The diet of Ameiva edracantha Bocourt 1874, a terrestrial diurnal teiid lizard distributed in northwestern Peru and southwestern Ecuador is described for the first time. Stomach contents of fifteen individuals collected from quebrada La Angostura were analyzed. Lepidopteran larvae, coleopterans, orthopterans and spiders were the dominant preys in the lizard’s diet. Snout-vent length and head length, width and height were not correlated to prey length, width and volume. Other parameters such as profitability and prey target selection could be involved in prey selection by A. edracantha.
8
artículo
Publicado 2007
Enlace
Enlace
Las canteras de sillar de Añashuayco se localizan en la parte noroeste de la ciudad de Arequipay ocupan parte de la penillanura constituida por ignimbritas y depósitos aluviónicos. La geomorfología del área presenta una quebrada transversal que se inicia en el aparato vol- cánico del Chachani y concluye en la margen derecha del río Chili en el distrito de Uchumayo muy cerca del batolito de La Caldera.La parte superior de la quebrada está ocupada por asentamientos humanos en situación de extrema pobreza, mostrando una ocupación anárquica del territorio. La parte media recibe el impacto del Parque Industrial de Río Seco, donde los efluentes de las curtiembres y relaves de Inka Bor son depositados en esta quebrada, afectando directamente a la napa freática al producir un proceso de infiltración. Asimismo, se observa la presencia abundante de residuos sólidos y la atmós...
9
artículo
Publicado 2020
Enlace
Enlace
We present the characterization of the aquatic environment, riparian ecosystem and macroinvertebrate communities in 7 basins of the west slope of the Yanachaga Chemillén National Park (PNYCh). The CERA protocol, including the Andean Biotic Index (ABI), the Fluvial Habitat Index (IHF), the Andean Creek Index (Qbr-And) were estimated and the combination of these 3 indexes allowed to calculate the Ecological Status Index of Andean Rivers (ECOSTRIAND) at each sampling point. Additionally the FBI and BMWP-Col indexes were calculated. Sampling was carried out in the 7 basins, between 1800 and 2500 meters of altitude, including the upper basins inside the PNYCh, in the middle and lower basins, both in the buffer zone of the park. We found 179 taxa, 66 families and 14 orders in all basins evaluated. Within the PNYCh, the values of IHF and Qbr-And were optimal, but to go down basins, the indexes...
10
tesis de grado
Publicado 2018
Enlace
Enlace
El trabajo de investigación titulado “Lineamientos Para el Desarrollo Turístico de la Provincia de Yungay”, presenta los aspectos más importantes que se tendría que mejorar en la provincia de Yungay, con la cual se convertirá en uno de los lugares más atractivos del turismo a nivel regional, nacional e internacional, brindando una mejor oportunidad de desarrollo a su población, cuidando el medio ambiente. La provincia de Yungay se encuentra en la parte central andina del departamento de Ancash y debido a su ubicación geográfica, llega a ser de gran esplendor de paisajes. El entorno de la ciudad de Yungay corresponde a un valle interandino. En el sector norte del Callejón de Huaylas, entre las cordilleras blanca y negra, con una hermosa vista de las cumbres nevadas más importantes, principalmente el Huascarán, el cual se aprecia en toda su belleza. La principal estructura ...
11
artículo
Publicado 2023
Enlace
Enlace
In September 2014, a study of the vegetation of the "Antonio Raimondi" Ecological National Park was conducted in the district of Ancon in Lima Metropolitan. The composition of flora species was recorded according to their classification by genera and families. Components including relative abundance, relative frequency, density, and vegetation cover were examined at for the quantitative evaluation. A total of 1050 individuals from 14 flora species and 1 morphospecies were registered, the 14 species were grouped into 7 families and 10 genera. The flora of the area was characterized by the species Tillandsia purpurea Ruiz & Pav. at 41.55%, Tillandsia latifolia Meyen at 24.23%, and Solanum multifidum Lam. at 14.02% as the most abundant. The Solanaceae family, represented by 3 species and the genera Solanum and Nicotiana had the most diversity. The species T. latifolia, T. purpurea, and ...
12
artículo
Few floristic inventories and even less syntaxonomical vegetation descriptions of tropical mountain forests exist. The author presents a syntaxonomical treatment of the vegetation of Reserva Biológica of San Francisco at the northern limit of Podocarpus National Park, Ecuador, together with notes on the corresponding soil types. The Lower Montane Forest (1800-2150 m), grouped in the new order Alzateetalia verticillatae, has a very diverse tree layer 20-35 m tall, and are a typical mosaic-climax. It grows on Terric Haplosaprists and Aquic Dystrupepts, developed from old landslide material and extends up to elevations of 2300 m at the bottom of wind-protected riverine valleys. At altitudes from 2100-2650 m (–2750 m), the forest structure and floristic composition change completely. The vegetation types belonging to this Upper Montane Forest form the newly described Purdiaeaetalia nutant...
13
artículo
Few floristic inventories and even less syntaxonomical vegetation descriptions of tropical mountain forests exist. The author presents a syntaxonomical treatment of the vegetation of Reserva Biológica of San Francisco at the northern limit of Podocarpus National Park, Ecuador, together with notes on the corresponding soil types. The Lower Montane Forest (1800-2150 m), grouped in the new order Alzateetalia verticillatae, has a very diverse tree layer 20-35 m tall, and are a typical mosaic-climax. It grows on Terric Haplosaprists and Aquic Dystrupepts, developed from old landslide material and extends up to elevations of 2300 m at the bottom of wind-protected riverine valleys. At altitudes from 2100-2650 m (–2750 m), the forest structure and floristic composition change completely. The vegetation types belonging to this Upper Montane Forest form the newly described Purdiaeaetalia nutant...
