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1
artículo
Publicado 1975
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En mi último viaje a Sudamérica (1962), tuve oportunidad de estudiar los rasgos de la vida ceremonial de los criadores de llamas y alpacas que habitan la Puna de Moquegua (Perú) y la Puna de Atacama (Argentina). Se trata de genuinos criadoores de ganado que, además de llamas y alpacas, en la mayoría de los casos crían también ovejas. El ambiente geográfico de estos criadores alcanza generalmente 4,000 metros y más; esto es, está situado siempre demasiado alto para practicar cualquier clase de agricultura. Son grupos sedentarios y habitan en casas rectangulares, con techo a dos aguas, cuyas paredes constan, en parte, de bloques de adobe y, en parte, de piedras no canteadas.
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3
tesis de grado
Publicado 2020
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El presente trabajo de investigación fue realizado en el Sector Apas, Huancaya-Yauyos, el objetivo de la investigación fue desarrollar el proceso de restauración ecológica de praderas altoandinas mediante parcelas demostrativas para la mejora de las pasturas naturales. El sector Apas está conformado por varios tipos de comunidades vegetales, especialmente del pajonal de puna, que está sometido a diversos factores externos que perturban sus procesos naturales, sobre todo por el sobrepastoreo, por ello se realizó el proceso de restauración ecológica, orientados a su recuperación estructural y funcional. En esa medida, en este trabajo se analizaron cuatro variables de las especies vegetales presentes y aquellas que fueron introducidas en las parcelas demostrativas. Se registró la abundancia, riqueza, cobertura y altura promedio de las especies en el transecto 1 (T1) y transecto c...
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5
artículo
Floristic composition and rangeland condition of the Phynaya Peasant Community (located North of Pitumarca district and EastNorth of Canchis Province, Cusco region) were evaluated to estimate stocking rate under climate change scenario. Floristic composition, vegetation cover, and plant vigor were evaluated on 79 step-transects of 200 m in six rangeland sectors. Preliminary results reveal that there are 60 species, grouped in 13 families, where the dominant families were Poaceae (46.67%), Asteraceas (15%) and seudograsses (13.3%), of which, 45% were palatable for alpacas. Of the total grazing areas, alpacas´ areas represent 70.4%, llamas 15.4%, cattle 3.5%, sheep 4.5% y vicunas 6.3%. Actual stocking was 1 alpaca unit per hectare while stocking rate average estimated was fair with supportability of 0.78 UAl/ha; thus, rangelands are considered on degradation process
6
artículo
Floristic composition and rangeland condition of the Phynaya Peasant Community (located North of Pitumarca district and EastNorth of Canchis Province, Cusco region) were evaluated to estimate stocking rate under climate change scenario. Floristic composition, vegetation cover, and plant vigor were evaluated on 79 step-transects of 200 m in six rangeland sectors. Preliminary results reveal that there are 60 species, grouped in 13 families, where the dominant families were Poaceae (46.67%), Asteraceas (15%) and seudograsses (13.3%), of which, 45% were palatable for alpacas. Of the total grazing areas, alpacas´ areas represent 70.4%, llamas 15.4%, cattle 3.5%, sheep 4.5% y vicunas 6.3%. Actual stocking was 1 alpaca unit per hectare while stocking rate average estimated was fair with supportability of 0.78 UAl/ha; thus, rangelands are considered on degradation process
7
artículo
Floristic composition and rangeland condition of the Phynaya Peasant Community (located North of Pitumarca district and EastNorth of Canchis Province, Cusco region) were evaluated to estimate stocking rate under climate change scenario. Floristic composition, vegetation cover, and plant vigor were evaluated on 79 step-transects of 200 m in six rangeland sectors. Preliminary results reveal that there are 60 species, grouped in 13 families, where the dominant families were Poaceae (46.67%), Asteraceas (15%) and seudograsses (13.3%), of which, 45% were palatable for alpacas. Of the total grazing areas, alpacas´ areas represent 70.4%, llamas 15.4%, cattle 3.5%, sheep 4.5% y vicunas 6.3%. Actual stocking was 1 alpaca unit per hectare while stocking rate average estimated was fair with supportability of 0.78 UAl/ha; thus, rangelands are considered on degradation process
8
artículo
Floristic composition and rangeland condition of the Phynaya Peasant Community (located North of Pitumarca district and EastNorth of Canchis Province, Cusco region) were evaluated to estimate stocking rate under climate change scenario. Floristic composition, vegetation cover, and plant vigor were evaluated on 79 step-transects of 200 m in six rangeland sectors. Preliminary results reveal that there are 60 species, grouped in 13 families, where the dominant families were Poaceae (46.67%), Asteraceas (15%) and seudograsses (13.3%), of which, 45% were palatable for alpacas. Of the total grazing areas, alpacas´ areas represent 70.4%, llamas 15.4%, cattle 3.5%, sheep 4.5% y vicunas 6.3%. Actual stocking was 1 alpaca unit per hectare while stocking rate average estimated was fair with supportability of 0.78 UAl/ha; thus, rangelands are considered on degradation process
9
artículo
Precisely establishing the context in which adaptation to climate change is occurring is very important, as it allows us to identify factors beyond the ecological. In fieldwork conducted in two communities in the Cordillera Blanca, Canray Grande and Los Andes Recuay, we have identified population loss in the puna. In sectors where before (1970s/80s) there were ten or more families, there are now only three families. To understand the reasons or causes of this population loss, we used ethnographic fieldwork, which revealed that this decline is due to factors beyond climate change.We attribute this population loss to demographic characteristics specific to these families in the puna, such as their lifecycles, which propagate the abandonment of the puna. Pastoral families use livestock as an asset, initially as a form of accumulation, and later as a form of consolidation. However,...
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tesis de maestría
Publicado 2021
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Esta investigación buscó determinar el efecto de la aplicación del programa HERRATECA para mejorar las competencias digitales en la unidad educativa “Luis Garzón Jiménez” Puná, Ecuador, 2020. Se desarrolló dentro de la metodología cuantitativa y siguió el tipo de diseño preexperimental. Se aplicó un cuestionario valido y confiable tanto en el pretest como en el postest, en una muestra de 34 participantes, de los cuales 10 fueron docentes y 24 escolares. Los resultados obtenidos revelaron que predominó el nivel bajo en el pretest con el 41,18%, mientras que en el postest prevaleció el nivel alto con el 97,06%. Además, los resultados inferenciales mostraron una diferencia significativa de 15,735 (Sig.= 0.000 < 0.05) entre las medias del pretest y postest del grupo experimental, lo que permitió aceptar la hipótesis de investigación Hi y se rechazó la hipótesis nula H0...
12
artículo
Publicado 2017
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Se estudió la dieta del suri Rhea pennata en la región de Moquegua al sur de Perú, mediante el análisis de heces. Esta especie considerada en “Peligro Crítico” en el Perú se mostró como estrictamente herbívora, principalmente folívora. Se identificaron 44 morfoespecies de plantas en su dieta, de las cuales Oxychloe andina (una especie de Juncaceae dominante en bofedales disturbados) presentó los mayores valores relativos de densidad, peso, volumen y frecuencia. A pesar de la aparente selectividad, esta especie presenta una dieta muy diversa que le permitiría adaptarse a las carencias nutricionales en el hábitat que ocupa. Los datos obtenidos en diferentes hábitats que ocupa el Suri, muestran que en zonas más áridas existe la tendencia a una mayor selectividad debido a la presencia de plantas con compuestos secundarios (fenoles, terpenos y alcaloides) para evitar la her...
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artículo
Publicado 2017
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We study the Lesser Rhea (Rhea pennata) diet in the Moquegua region of southern Peru, using analysis of feces. This species considered “Critically Endangered” in Peru, was shown as strictly herbivorous, mainly folivorous. A total of 44 plant morphospecies were identified in the diet, of which Oxychloe andina (a Juncaceae species dominant in disturbed wetlands of the Puna) had the highest values of relative density, weight, volume and frequency. Despite the apparent selectivity, this species presents a very diverse diet that would allow it to adapt to the nutritional deficiencies in the habitat that it occupies. The data obtained in different habitats of the Lesser Rhea show that in more arid zones there is a tendency for greater selectivity due to the presence of plant with secondary compounds (phenols, terpenes and alkaloids) to avoid herbivory, while in environments with wetlands (...
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artículo
Publicado 2025
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La investigación tuvo como objetivo generar conocimiento sobre los microorganismos asociados a plantas de ecosistemas altoandinos, como bofedales, pajonales y césped de puna. Se aislaron en medios de cultivo a microorganismos rizosféricos y endófitos asociados a plantas y suelos de los tres ecosistemas de la comunidad de Santa Fe de Paras, Ayacucho, ubicada a 4400 msnm. Se determinó que la población de bacterias y hongos rizosféricos es similar en los tres ecosistemas, mientras que la población de bacterias y hongos endófitos difiere (p<0.05). De manera general, se observó que el bofedal presenta menor porcentaje de microorganismos tanto en la parte aérea como en la raíz. Asimismo, la población de bacterias rizosféricas del pajonal presentó índices de biodiversidad superiores al césped de puna y bofedal, en tanto que, en la población de hongos del césped de puna y p...
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artículo
Publicado 2025
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Since 2015, the demand and price of lithium have increased considerably due to its central role in battery production. Latin America has around 60% of the world's lithium reserves. The deposits are mainly located in the Puna region shared by Chile, Bolivia, Peru and Argentina. The possibility of extracting lithium from salt flats is promoted by governments and companies as an undeniable opportunity. At the same time, lithium mining is presented as a key to solving the climate crisis, given the need to reduce greenhouse gases and favor the energy transition. In contrast, lithium extraction is considered by local communities as pernicious because the extraction involves the loss of large volumes of water, since lithium is dissolved in the salt flats and a large amount of fresh water is used during the process and because of the chemical contamination it generates. This paper will address t...
16
artículo
Publicado 2017
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This is based on the study of the archaeological site of Pampa Qotamisa from a systematic archaeological survey, taking into account the landscape surrounding the site. The aspect that has been considered in the study of these societies were the weapons used for hunting (Tips), the analysis of the wildlife that until today exists on the site and the landscape in which encounters between hunters and camelids are given are the indicators of these companies.Aims to characterize the landscapes where they were promoted and materialized encounters between hunters and camelidaes area Qotamisa Pampa, evaluating the different factors involved in this activity such as (hunters, landscape, camels, technology, etc.), these interrelate and converge in hunting scenarios. The choice of this area for activities responds that this has all the characteristics necessary for election as landscape for the oc...
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artículo
Publicado 2007
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Archaeological data obtained from three sites located on the Pierina mining influence area, Callejón Huaylas, Perú have gathered evidence to argue for pastoralism operations during the Middle Horizon period (650 950 AD). This epoch saw a rise of llama herds. The temporal occupation has been confirmed by radiocarbon measurements that are agreed with ceramic and lithic local styles. It is suggest a possible increment on the consumption of textile by Wari State, which propelled rural centers such as Ancosh Punta. Regional interaction is assumed by the Wari control of obsidian sources, the only imported raw material for manufacturing lithic tools. Obsidian found in Pierina was obtained from Ayacucho (Quizpisisa source) and Arequipa (Alca source). However, local patterns remain the same specially in the manufacture of ceramic vessels, projectile points, and the building of rectangular funer...
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tesis de maestría
Publicado 2025
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Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Animal
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artículo
En este trabajo se presenta el inventario de plantas vasculares de montaña alta (altitudes de 4000 a 4810 m) del noreste del distrito de Oyón, región Lima, Perú. Las colectas se realizaron durante los periodos marzo a mayo de 2014 y de 2015, y setiembre a noviembre de 2014. Se encontraron 47 familias, 112 géneros y 181 especies, de las cuales 94 no estaban registradas para la región Lima. Se presenta la lista de todas las especies encontradas con referencia a los colectores, número de colecta y altitud de colecta. Se argumenta la necesidad de multiplicar los inventarios botánicos locales que permitirían conocer mejor la diversidad de la flora, la distribución de las especies, y los endemismos en la vegetación altoandina.
20
artículo
Publicado 2022
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The aim of this work was to evaluate the effects of long-acting progesterone (LAP4) administered in the early stages of gestation on plasma P4 concentration and pregnancy and embryonic / fetal mortality rates between 30 and 60 days of gestation. Adult females (n = 92) with the presence of an ovarian follicle >7 mm were naturally mated with males of proven fertility (day -2). At day 0, ovarian ultrasonography was performed to confirm the occurrence of ovulation. On day 2, females that ovulated were assigned to receive a dose of 50 mg IM of LAP4 (LAP450, n = 26), 100 mg of LAP4 (LAP4100, n = 22), or 5 ml of saline (Control, n = 25). Pregnancy diagnosis and gestational losses were determined by ultrasonography at 30 and 60 days of gestation. Blood samples were collected on days 0, 3, 7, 10 and 14 after ovulation to determine the plasma P4 concentration by microparticle chemiluminescence ...
