Tópicos Sugeridos dentro de su búsqueda.
https://purl.org/pe-repo/ocde/ford#5.02.04 16 Perú 12 Rendimiento académico 10 Evaluación 9 https://purl.org/pe-repo/ocde/ford#2.11.04 8 https://purl.org/pe-repo/ocde/ford#5.01.00 8 https://purl.org/pe-repo/ocde/ford#3.02.27 7 más ...
Mostrando 1 - 20 Resultados de 271 Para Buscar 'dio (while)', tiempo de consulta: 0.29s Limitar resultados
1
artículo
We studied palm communities, in particular species-richness and abundance, in the tropical rainforests in southeastern Peru in 54 transects (5×500m) covering an area of 13.5 hectares in flood plain, terra firme, terrace and premontane hills. We found 42 palm species in 18 genera in the transects. Terra firme forest had the highest species richness (38 species) followed by floodplain and premontane hills with 27 species and terrace forests with 26 species. The highest palm abundances were found in premontane hill forest which had 3243 palms per hectare and terra firme forest which had 2968 palms per hectare. The floodplain forests were intermediate in palm abundance with 2647 and the terrace forests had the lowest abundance with 1709 palms per hectare. Intermediate sized palms were the most common being represented by 18 species, while large palms were represented with 16 species. There ...
2
artículo
We studied palm communities, in particular species-richness and abundance, in the tropical rainforests in southeastern Peru in 54 transects (5×500m) covering an area of 13.5 hectares in flood plain, terra firme, terrace and premontane hills. We found 42 palm species in 18 genera in the transects. Terra firme forest had the highest species richness (38 species) followed by floodplain and premontane hills with 27 species and terrace forests with 26 species. The highest palm abundances were found in premontane hill forest which had 3243 palms per hectare and terra firme forest which had 2968 palms per hectare. The floodplain forests were intermediate in palm abundance with 2647 and the terrace forests had the lowest abundance with 1709 palms per hectare. Intermediate sized palms were the most common being represented by 18 species, while large palms were represented with 16 species. There ...
3
artículo
Books, articles, government documents, and other written accounts of tropical biology and conservation reach a tiny fraction of their potential audience. Some texts are inaccessible because of the language in which they are written. Others are only available to subscribers of developed-world journals, or distributed narrowly within tropical countries. To examine this dysfunction in the tropical literature—and what it means for conservation—we spent a year trying to compile everything ever written on the biology and conservation of the department of Madre de Dios, Peru, in southwestern Amazonia. Our search of libraries, databases, and existing bibliographies uncovered 2202 texts totaling roughly 80000 pages. Texts date from 1553 to 2004, but 93% were written after 1970. Since that year the publication rate has increased steadily from fewer than ten texts per year to nearly three texts...
4
tesis de grado
The objective of this work was to design hydrometallurgical stages to reprocess artisanal gravimetric table concentration tailings from Madre de Dios. These tailings are currently considered waste, even though they still contain gold and rare earths. The scope is limited to the design and technical-economic assessment of leaching stages of gold and rare earths, as well as their subsequent recovery and the neutralization of effluents. Leaching stages were experimentally evaluated in a laboratory scale through a three-step experimental design. Each stage evaluated one independent variable on two levels and its effect on reagent consumption and gold or rare earths extraction. The first step considered gold extraction through thiourea leaching with ferric sulfate as oxidizing agent in an equivalent molar proportion to thiourea. The second step evaluated the inclusion of a hydrochloric acid l...
5
tesis de grado
La tesis “La gestión administrativa en el Gobierno Regional Madre de Dios -2017”, está constituido de 07 apartados las cuales son: Introducción, Marco teórico, Método de investigación, Resultados de la investigación, Discusión, Conclusiones, Recomendaciones y Referencias Bibliográficas. El presente trabajo de investigación se realizó a los trabajadores del Gobierno Regional de Madre de Dios, con la finalidad de Describir como es la Gestión Administrativa en el Gobierno Regional de Madre de Dios, 2017, a través de sus cuatro dimensiones que son: planificación, organización, dirección y control. El tipo de investigación que se realizó es básico, de nivel descriptivo y de diseño no experimental, tomando como población de estudio a los trabajadores del gobierno regional, que fueron 60 trabajadores; se utilizó la técnica de la encuesta con su cuestionario de pregunt...
6
artículo
Los libros, artículos, documentos gubernamentales y otros registros escritos de la biología y conservación de los trópicos llegan a solo una pequeña fracción de sus lectores potenciales. Algunos de los textos son inaccesibles debido al idioma en que están escritos. Otros sólo están disponibles a subscriptores de revistas caras del mundo desarrollado, o circulan exclusivamente en los países tropicales. Para entender mejor esta ineficiencia en la literatura científica tropical y lo que pueda significar para la conservación, realizamos una recopilación bibliográfica de las obras relacionadas a biología y conservación del departamento amazónico de Madre de Dios, Perú. El esfuerzo dio como resultado una lista de 2.202 textos escritos entre 1537 y 2004, sumando aproximadamente 80.000 páginas. El 93% de estos textos fueron escritos a partir de 1970. En 2004 la tasa de publica...
7
artículo
Population genetic variability of Brazil nut Bertholletia excelsa in the Madre de Dios region was determined by analyzing 11 microsatellites markers in a total of 108 trees. The global results showed a great allelic diversity (89 alleles, with a mean of 8.09 alleles per locus), at the localities level the highest allelic richness was found in Iberia (AR = 4.82) and the lowest in Itahuania (AR = 3.64), this the same localities were the only ones that presented an excess of heterozygotes. The results of the correspondence factor analysis (AFC) show a strong genetic overlap between most of the analyzed localities. The results of the Fixation Index (Fst) show that the localities of Iñapari and Iberia are more related to each other (Fst = 0.048), but slightly differentiated with the other localities (the values of Fst with the other localities varied between -0.001 to 0.193). The dendrogram ...
8
artículo
The Amazon rainforest is one of the most biodiverse and at the same time most threatened ecosystems in the biosphere. Its different habitats provide a unique floristic pattern. Therefore, we aimed to identify the floristic arboreal composition in an area of the Amazon rainforest and determine the local patterns of diversity in its different habitats. This study was conducted around the Tambopata Research Center, Madre de Dios, Peru. To achieve our goals, we established 20 (50 × 30 m) plots distributed equally in four habitats, these being: Mauritia Palm Swamp, Floodplain Forest, Successional Floodplain Forest, and Tierra Firme Forest. In each plot, we collected all individuals with a diameter at a breast height ≥ of 10 cm. Subsequently, the individuals were identified and classified by cluster and diversity analysis. We found 57 families, 173 genera, 300 species, and 1958 individuals....
9
artículo
Population genetic variability of Brazil nut Bertholletia excelsa in the Madre de Dios region was determined by analyzing 11 microsatellites markers in a total of 108 trees. The global results showed a great allelic diversity (89 alleles, with a mean of 8.09 alleles per locus), at the localities level the highest allelic richness was found in Iberia (AR = 4.82) and the lowest in Itahuania (AR = 3.64), this the same localities were the only ones that presented an excess of heterozygotes. The results of the correspondence factor analysis (AFC) show a strong genetic overlap between most of the analyzed localities. The results of the Fixation Index (Fst) show that the localities of Iñapari and Iberia are more related to each other (Fst = 0.048), but slightly differentiated with the other localities (the values of Fst with the other localities varied between -0.001 to 0.193). The dendrogram ...
10
artículo
The Amazon rainforest is one of the most biodiverse and at the same time most threatened ecosystems in the biosphere. Its different habitats provide a unique floristic pattern. Therefore, we aimed to identify the floristic arboreal composition in an area of the Amazon rainforest and determine the local patterns of diversity in its different habitats. This study was conducted around the Tambopata Research Center, Madre de Dios, Peru. To achieve our goals, we established 20 (50 × 30 m) plots distributed equally in four habitats, these being: Mauritia Palm Swamp, Floodplain Forest, Successional Floodplain Forest, and Tierra Firme Forest. In each plot, we collected all individuals with a diameter at a breast height ≥ of 10 cm. Subsequently, the individuals were identified and classified by cluster and diversity analysis. We found 57 families, 173 genera, 300 species, and 1958 individuals....
11
tesis de maestría
Uno de principales problemas que contribuye a la desnutrición crónica infantil, es la inadecuada ingesta de alimentos, que puede deberse a un problema de insuficiente cantidad y/o a una deficiente calidad de los alimentos, que hacen una insuficiente ingesta de calorías en relación a los requerimientos diarios. Como consecuencia, los niños presentan problemas en la atención en clase y la respuesta a estímulos y la memoria, haciendo que progresen más lentamente en la escuela, tengan un menor desempeño y tengan peores resultados en pruebas cognitivas, lo cual los predispone a un bajo nivel de aprendizaje y de desarrollo, incluso cuando adultos. Sobre la base de la ENAHO (2011), el déficit calórico (calculado sobre el total de niños que asisten a educación inicial o primaria) es mayor entre los más pobres: 76.4% en los pobres extremos, 40% entre los pobres y 16.3% entre los no ...
12
tesis de maestría
Uno de principales problemas que contribuye a la desnutrición crónica infantil, es la inadecuada ingesta de alimentos, que puede deberse a un problema de insuficiente cantidad y/o a una deficiente calidad de los alimentos, que hacen una insuficiente ingesta de calorías en relación a los requerimientos diarios. Como consecuencia, los niños presentan problemas en la atención en clase y la respuesta a estímulos y la memoria, haciendo que progresen más lentamente en la escuela, tengan un menor desempeño y tengan peores resultados en pruebas cognitivas, lo cual los predispone a un bajo nivel de aprendizaje y de desarrollo, incluso cuando adultos. Sobre la base de la ENAHO (2011), el déficit calórico (calculado sobre el total de niños que asisten a educación inicial o primaria) es mayor entre los más pobres: 76.4% en los pobres extremos, 40% entre los pobres y 16.3% entre los no ...
13
artículo
Population status and geographic distribution of the giant otter (Pteronura brasiliensis) from Madre de Dios Region (south-eastern Peru) of 2014 and 2015 periods are presented. Population census for each period were 128 individuals, grouped in 22 and 20 resident groups during 2014 and 2015 periods respectively. The Manu National Park (2.2 ind/10 km) and Bahuaja Sonene National Park (1.43 ind/10 km.) were the sectors with the greatest abundance of giant otters inside the natural protected areas (ANP), while, Las Piedras and Los Amigos rivers were the sectors, outside the ANP, with highest value of abundance: 0.5 and 0.43 ind/10 km respectively. The populations inside ANP show more stable and protected (17 resident groups), while outside ANP are more vulnerable, where we registered only five (2014) and two (2015) giant otter groups. Currently, the main threats for giant other populations f...
14
tesis de grado
Universidad Nacional Agraria La Molina. Facultad de Ciencias. Departamento Académico de Biología
15
tesis de maestría
En el presente trabajo se describe y analiza las representaciones territoriales que los nativos tienen del territorio y la gobernanza practicada en las Comunidades Nativas San José de Karené y Puerto Luz, ambas pertenecientes al grupo étnico Harakmbut, ubicadas en el distrito de Madre de Dios, departamento del mismo nombre. Asimismo, se describe y analiza el grupo de poder que nace como resultado de la actividad minera en San José. En ambas Comunidades Nativas coexisten varias representaciones sobre el territorio. Desde la más ancestrales y conservacionistas a una de tipo extractiva. Estas coexistencias al mismo tiempo difieren en una y otra comunidad. En Puerto Luz, los nativos conciben su territorio como un área ancestral, donde han vivido sus antepasados; en San José, los conciben como un área de extracción de recursos. Al mismo tiempo hay semejanzas: en ambos casos el territ...
16
artículo
This research studies Ruben Darío’s stories “El dios bueno” and “Betún y sangre”, the first stories of a serie of six, called “New stories”, a compilation that the writer wanted to publish, but he never do. The name of the hypothetic book is relevant to research because says that the writer had reasons to disattend what he made in Azul… We propose, in case of the “El dios bueno” and “Betún y sangre” stories, appears the politic and social element as motiv and mobilizer of the actions, thus, is significant studying of the power relations.The advent of politic theme have an explication on the own publication context of the stories, because they were written while Dario work like war chronicler; Darío uses the style of that discursive genres like verisimilitude procedures in the middle of descriptions, they clearly sho...
17
artículo
Se presenta información del estado poblacional y distribución geográfica del lobo de río (Pteronura brasiliensis) en la región Madre de Dios durante los años 2014 y 2015. La población registrada fue de 128 individuos para ambos años, agrupados en 22 grupos familiares en el año 2014 y 20 grupos en el año 2015. Los sectores con mayores abundancias fueron el Parque Nacional del Manu con 2.2 ind/10 km, seguido del Parque Nacional Bahuaja Sonene con 1.43 ind/10 km. La mayor población de lobo de río fuera de las áreas naturales protegidas (ANP) fue registrada en la cuenca del río Las Piedras con una abundancia de 0.5 ind/10 km, seguido de la cuenca de Los Amigos con 0.43 ind/10 km. Las poblaciones dentro de ANP se muestran estables y protegidas (17 grupos familiares en ambos años), mientras que fuera de ANP se registraron solamente 5 grupos en el año 2014 y 2 grupos en el 2015....
18
artículo
  Agroforestry systems are a sustainable management alternative for land degraded by conventional agriculture in the Peruvian Amazon, this could prevent further deforestation of forests and the loss of more ecosystems. The tree component in agroforestry systems makes them more similar to natural forests than many other land use systems such as pastures, monocultures, among others. This characteristic also affects the carbon sequestration potential of agroforestry systems, since they represent a considerable carbon sink both above and below ground. Consequently, it can represent a considerable economic income from carbon credits, which is an international decon­tamination mechanism to reduce polluting emissions to the environment, with a relatively new market and with great relevance in mitigating climate change. In this sense, the carbon stored in the aerial biomass of seven agroforest...
19
tesis de grado
La presente investigación tiene por finalidad de determinar cuál es la relación que existe entre la Planificación Presupuestaria y el Cumplimiento de Meta- 42 de la Municipalidad de Tambopata-Madre De Dios- 2020, planificación presupuestaria que se ha observado que no ha sido adecuada para la meta 42, demostrando que por la falta de presupuesto el área usuaria no puede realizar algunas actividades dadas por ley en ese sentido no se está cumpliendo la meta. La investigación es de alcance descriptivo correlacional de tipo básico no experimental ya que no se manipularon las variables solo se observaron y analizaron en su estado natural, la población fue de 31 en donde se tomó como muestra la totalidad de la población por un muestreo por conveniencia. También se ha llegado a conocer que el 51.61% de los encuestados, manifestaron que a veces se realiza una adecuada planificación...
20
tesis de grado
The present thesis, "Impact of the alluvial gold mining in the deterioration of the watershed of the Huepetuhe river, Madre de Dios - Peru", presents an analysis of the environmental problematic ofthe auriferous mining industry in Madre de Dios which is of special interest to be totally degraded. The mining auriferous alluvial activity, in a period of 33 years 1980 - 2013, has converted approximately 4,494.41 hectares of natural forest to naked soil. The objective of the study is to determine the environmental irnpacts caused by the alluvial gold mining activity in the surface water and forest coverage of the study area. So that it helps to understand the environmental problematic. In such a way that the local population is conscious that his own actions have contributed to the deterioration of the ecosystem of the micro basin Huepetuhe. The environmental irnpacts identification are made...