scholarly journals Capítulo 6. Paisajes en tensión: movilidades y territorialidades en la cordillera de los Andes, región de la Araucanía, Chile

2021 ◽  
pp. 163-187
Author(s):  
Viviana Huiliñir-Curío ◽  
Gonzalo Salazar ◽  
Martín Fonck
Keyword(s):  
Cordillera De Los Andes ◽  
Andes Region

scholarly journals Socioeconomic Conditions and Landowners’ Perception Affect the Intention to Restore Polylepis Forests in the Central Andes of Peru

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 118
Author(s):  
Lunel Joseph ◽  
Raúl Marino Yaranga Cano ◽  
Marco Arizapana-Almonacid ◽  
Marcela Venelli Pyles ◽  
Flávia Freire de Siqueira ◽  
...  
Keyword(s):  
Rural Communities ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Negative Impact ◽  
Positive Impact ◽  
Central Andes ◽  
Socioeconomic Conditions ◽  
Native Flora ◽  
The Family ◽  
Andes Region

Research Highlights: Families more dependent on crops as the main source of income of properties have a greater intention of restoring Polylepis forest areas. However, this intention reduces with the increase of family dependence on subsistence products supplied by Polylepis forests. Properties where the chances of restoration of Polylepis forests are greater are those where the educational and technical level is better. Objectives: We aimed to comprehend which socioeconomic factors of rural properties and families’ perception were determinant for the intention to restore Polylepis forests in the Central Andes region of Peru. Material and Methods: We collected data through visits and the application of questionnaires. We selected 13 rural communities in the Tulumayo River Basin. We randomly sampled 10 to 20 families in each community, depending on its size, totaling 200 families. We used generalized linear mixed model (GLMM) to test which variables affect the intention to restore the forest. Results: When crops are the main source of income in the property, the families have more intention to restore Polylepis areas, on the other hand, when Polylepis forests are an important source of products for the family subsistence, the intention to restore forests reduces, indicating that higher technological status has a positive impact on restoration. The perception that Polylepis forests are important for the existence of water sources had a positive impact on the families’ intention to restore the areas. However, the perception that Polylepis forests are important for native flora persistence had a negative impact on the intention to restore their areas. Conclusions: Our results showed that investment in improving the productivity of the properties and in the education of their landowners should increase the success of eventual programs for restoration of Polylepis forests.

scholarly journals Spatial variability in soil properties on slow-forming terraces in the Andes region of Ecuador

2003 ◽  
Vol 72 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Gerd Dercon ◽  
Jozef Deckers ◽  
Gerard Govers ◽  
Jean Poesen ◽  
Henrry Sánchez ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Soil Properties ◽  
The Andes ◽  
Andes Region

Globodera rostochiensis (yellow potato cyst nematode).

2021 ◽  
Author(s):  
Janet Rowe
Keyword(s):  
Potato Crop ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Winter Storms ◽  
Cyst Form ◽  
The Andes ◽  
Run Off ◽  
Top Soil ◽  
Irrigation Channels ◽  
Andes Region

Abstract G. rostochiensis is a world wide pest of temperate areas, including both temperate countries and temperate regions of tropical countries, for example India's Nigrilis region. Distribution is linked to that of the potato crop. Potato cyst nematode is considered to have originated from the Andes region of South America, from where it spread to Europe with potatoes. The ease with which it has been transported across continents proves what a resilient pest it is. The cyst form which adheres to host roots, stolons and tubers and to soil particles during transportation gives rise to new infestations where climate and food source are both available and favourable. Secondary means of dispersal is through the movement of contaminated farm machinery, farming implements and contaminated footwear. Cysts are also successfully spread by wind dispersal, during winter storms or sand storms where top soil is redistributed. Rain which causes flooding and water to run off fields into trenches or irrigation channels also redistributes cysts into adjoining areas.

scholarly journals Evolución de la serie Microphyllae (Adesmia, Fabaceae) en la Cordillera de los Andes: una perspectiva biogeográfica

2006 ◽  
Vol 79 (3) ◽  
Author(s):  
MARITZA A. K. MIHOC ◽  
JUAN J MORRONE ◽  
MARIA A NEGRITTO ◽  
LOHENGRIN A CAVIERES
Keyword(s):  
Cordillera De Los Andes

scholarly journals Corrientes de detritos en la quebrada de Macul, Chile. Estudio de caudales máximos

1999 ◽  
Vol 6 (4) ◽  
pp. 341 ◽  
Author(s):  
Ximena Vargas
Keyword(s):  
Cordillera De Los Andes

Se analiza la ocurrencia de corrientes de detritos en una cuenca andina en la que no se dispone de información fluviométrica y que se desarrolla en los primeros contrafuertes de la Cordillera de Los Andes, en una zona cercana a la ciudad de Santiago, Chile. Se estiman los caudales líquidos asociados a los mayores eventos históricos que de acuerdo a la literatura pueden clasificarse como flujos de barro o de detritos y se analiza la forma tradicional de determinación de caudales de diseño en cuencas pluvionivales. Dada la incidencia que estos eventos tienen sobre la población de zonas aledañas al cauce, se evalúa la crecida máxima probable susceptible de ocurrir en la cuenca en estudio.

scholarly journals La formación del sistema agrario colonial en Piura. Anotaciones sobre la ciudad de San Miguel y el nacimiento de la hacienda Tangarará, siglos XVI-XVII

2021 ◽  
pp. 259-291
Author(s):  
César Espinoza Claudio
Keyword(s):  
Cordillera De Los Andes

En este ensayo buscamos presentar algunas ideas y el registro de datos compilados en los archivos de Piura y Lima sobre como la economía de Piura entre 1532 y 1650 va a sufrir un giro socioeconómico de tránsito de la agricultura a la economía estanciera, una dinámica histórica que estará acompañada de una explicación sobre el movimiento de la ciudad de San Miguel de Piura, la utilización del peonaje asalariado y el colonato campesino indígenas y el trabajo de los negros esclavos y libertos, y los procesos de concentración de la tierra que posibilitaran la formación de un sistema agrario colonial en el corregimiento y provincia de Piura. Esta estructura agraria virreinal empieza primero a construirse con la organización y distribución de la tierra a los pueblos y comunidades indígenas que despliega el virrey Francisco de Toledo desde 1572 para luego estabilizar el corregimiento de Piura con la refundación de la ciudad en 1588 por el virrey Conde del Villar, en el sitio actual, y proseguir con el proceso de privatización de las tierras circundantes y a organizar en un segundo momento las haciendas y las estancias ganaderas entre la ciudad y el territorio ubicado al pie de la cordillera de los Andes en el siglo XVII. Finalmente, exploramos algunas variables sobre el proceso de formación y consolidación de la hacienda de Tangarará y sus pugnas con el Estado virreinal revisando documentos notariales y expedientes civiles.

scholarly journals “El hombre es tierra que anda”. Los crianceros trashumantes del Alto Neuquén en perspectiva histórica, siglos XIX-XX

2019 ◽  
pp. 129-153
Author(s):  
Nicolás Padín
Keyword(s):  
Cordillera De Los Andes

El artículo es el resultado de una investigación histórica que tiene por finalidad el análisis diacrónico de los crianceros trashumantes del Alto Neuquén, sus características, conflictos y devenir histórico. Tomando como punto de partida, la crítica a la actual celebración romántica de los crianceros desde los discursos políticos y mediáticos, el escrito se propone deconstruir el proceso de constitución de esta práctica, restituyendo la historicidad de sus transformaciones, permanencias y litigios con el poder político instituido.El escrito se detiene en jalones clave del itinerario histórico de esta práctica social, económica y cultural secular, en tanto actividad que implica movimientos cíclicos de ascenso y descenso de los crianceros y sus animales, entre las tierras bajas, donde se sitúan las “invernadas” y las tierras altas de la Cordillera de los Andes y la Cordillera del Viento, donde se localizan las “veranadas”. El artículo evidencia cómo los y las pastores/as trashumantes (productos históricos de una compleja hibridación indígena, criolla y chilena) sortearon hábilmente diversos desafíos que pusieron en entredicho su supervivencia, en una parábola que los situó desde un lugar de desconfianza, hasta en la actualidad, ser objeto de una fuerte invocación pública desde la perspectiva del patrimonio cultural.

scholarly journals Vegetative propagation of native fruit species of páramo Thibaudia floribunda and Cavendishia bracteata by cuttings

2017 ◽  
Vol 35 (1) ◽  
pp. 12-22
Author(s):  
Lina María López C. ◽  
Mariam Vásquez M. ◽  
Héctor Lancheros R. ◽  
Stanislav Magnitskiy
Keyword(s):  
Acetic Acid ◽  
Adventitious Roots ◽  
Naphthalene Acetic Acid ◽  
Fruit Species ◽  
Wild Fruit ◽  
The Andes ◽  
Shoot Production ◽  
Parenchyma Cells ◽  
Rooting Of Cuttings ◽  
Andes Region

Cavendishia bracteata and Thibaudia floribunda (Ericaceae) are wild fruit shrubs native to the Andes region. This study aimed to characterize the rooting potential of basal and apical cuttings using naphthalene acetic acid (NAA) in different concentrations (0, 200, 500, or 1,000 mg L-1). In C. bracteata, the cutting position on the branch affected its sprouting and rooting, with apical cuttings presenting the best performance with auxin application. The rooting of cuttings was more successful in C. bracteata than in T. floribunda. NAA applications between 200 to 500 mg L-1 were more suitable for the propagation of C. bracteata due to the higher percentages of rooting and shoot production. For propagation of T. floribunda, the use of apical cuttings without the application of auxins is recommended. Adventitious roots in cuttings of both species were originated from parenchyma cells of the stem.

scholarly journals Climatic risk for potato late blight in the Andes region of Venezuela

2008 ◽  
Vol 65 (spe) ◽  
pp. 32-39 ◽  
Author(s):  
Beatriz Ibet Lozada Garcia ◽  
Paulo Cesar Sentelhas ◽  
Luciano Roberto Tapia ◽  
Gerd Sparovek
Keyword(s):  
Late Blight ◽  
Disease Risk ◽  
Risk Index ◽  
Disease Model ◽  
Great Part ◽  
Potato Late Blight ◽  
Geographical Information ◽  
Climatic Risk ◽  
The Andes ◽  
Andes Region

Potato is an important crop for Venezuelan agriculture. However, its production is highly affected by late blight (Phytophtora infestans), since weather is commonly favorable for this disease. The aim of this study was to determine the sowing dates of low climatic risk for potato late blight in the Andes region of Venezuela, with an agrometeorological disease model and geographical information system (GIS) tools. The disease model used in this study was developed by Hyre (1954) which requires daily rainfall and temperature data which were obtained from 106 weather stations, located at the States of Mérida, Táchira, and Trujillo, for a period of 31 years. Hyre's model was applied for all stations obtainig the following variables: number of disease favorable days (DFD); number of periods with ten consecutive favorable days, named disease occurrence (O); and number of sprays required for disease control (S). These variables were used to calculate the Maximum Risk Index (MRI) and the Probable Risk Index (PRI). The interpolation of these indexes was used to generate maps of climatic risk for each sowing date. MRI and PRI maps showed that the highest climatic risk for potato late blight occurrence was during the rainy season, from May to July, decreasing during dry and mid seasons. However, high disease risk variability was observed for all seasons. The maps generated by coupling an agrometeorological disease model and GIS also show that in great part of potato areas of Andes region the number of sprays could be reduced, but more investigations about that must be carried out.

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