422
10
20655
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https://www.socictopen.socict.org/files/original/ccc1195e3ddb8f790a4ed983414b5290.pdf
ab2f9072e7399d5c94cffa2b41dec78b
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Zonificación de unidades de paisaje en la cuenca del río Khora Tiquipaya (Quillacollo, Bolivia) sustentada en el enfoque de ecología del paisaje
Creator
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Lizardo Reyna-Bowen, Mauricio Reyna-Bowen, José Reina-Castro, Ernesto Hurtado
Description
An account of the resource
La mayor parte de las cuencas de la región del Valle Central de Cochabamba (Bolivia) presenta erosión de suelo; escasa cobertura vegetal y períodos de lluvia intensa y de corta duración que ocasionalmente generan crecidas de ríos violentas de escorrentías que, como consecuencia directa, producen desastres que afectan a la infraestructura urbana y rural. El objetivo del presente trabajo fue zonificar los aspectos biofísicos de la cuenca Khora Tiquipaya, empleando imágenes satelitales, modelo digital de elevación (MDE), mapa de pendientes, y de relieve. Se describieron los perfiles de suelos siguiendo el modelo USDA y FAO. Las muestras se analizaron químicamente in situ. Luego del procesamiento de la información se lograron los siguientes resultados: 1) identificación de formaciones geológicas, tipos de depósitos, deslizamientos, relieves, taxonomía del suelo, cobertura y uso; 2) determinación del área de las unidades de paisaje en ha; y 3) formulación de una propuesta de manejo sostenible para la cuenca. La utilización de estas herramientas contribuye significativamente a la interpretación en grandes superficies de estudio, optimizando recursos y tiempo, para la gestión adecuada de la toma de decisiones en un contexto de desarrollo sostenible deseado.
Date
A point or period of time associated with an event in the lifecycle of the resource
2017
Identifier
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10.33936/la_tecnica.v0i0.957
Source
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La Técnica: Revista de las Agrociencias
Publisher
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Universidad Técnica de Manabí
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture (General), Animal culture
Relation
A related resource
<a href="https://revistas.utm.edu.ec/index.php/latecnica/article/view/957" target="_blank" rel="noreferrer noopener">https://revistas.utm.edu.ec/index.php/latecnica/article/view/957</a>
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https://www.socictopen.socict.org/files/original/613832d52dc2dbb6d93cddf53e12fc44.pdf
71c906feb797ff46e1fc08d749fd5d07
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Controlando la naturaleza: ambientalismo transnacional y negociaciones locales en torno al cambio climático en territorios indígenas en Colombia
Creator
An entity primarily responsible for making the resource
ASTRID ULLOA
Description
An account of the resource
En Colombia, la emergencia de las políticas globales en torno al cambio climático, específicamente los acuerdos internacionales relacionados con Reducción de Emisiones por Deforestación y Degradación de los Bosques (REDD+), han generado diversas posiciones, intervenciones y disputas, a la vez que apertura a mercados en torno a los bosques. Estos procesos sitúan los territorios de pueblos indígenas y afrodescendientes en el centro del debate. Este texto analizará los nuevos procesos de control de la naturaleza a través de la estrategia REDD+, que si bien permiten introducir acciones frente a las transformaciones ambientales, de manera paralela reestructuran territorios, actores e intereses en torno al medio ambiente y específicamente los bosques. Estas transformaciones sitúan a ciertos actores en el centro de las políticas y discusiones ambientales, pero desconocen al mismo tiempo prioridades ambientales (por ejemplo, conservación de la biodiversidad) y derechos culturales ganados previamente. Abstract In Colombia, the emergence of global climate policies, specifically the international agreements related to Reducing Emissions from Deforestation and Forest Degradation “plus” conservation (REDD+), has generated different positions, interventions and conflicts, as well as markets in relation to the forests. These processes have put the indigenous peoples’ territories in the middle of the controversy. This article analyzes the new processes of controlling nature through the strategy of REDD+, which allow actions against environmental changes, but at the same time allow restructuring territories, stakeholders, and interests around specific environments and forests. These transformations put certain actors in the middle of politics and environmental discussions, but at the same time don’t take in account environmental priorities (for example, biodiversity conservation) and disregard cultural rights.
Date
A point or period of time associated with an event in the lifecycle of the resource
2014
Subject
The topic of the resource
21st century, Cambio climático, Colombia, Indigenous Peoples, Siglo XXI, climate change, pueblos indígenas
Identifier
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10.18441/ibam.13.2013.49.117-133
Source
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Iberoamericana. América Latina - España - Portugal
Publisher
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Iberoamericana / Vervuert
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Social Sciences, Latin America. Spanish America, French literature - Italian literature - Spanish literature - Portuguese literature, History of Portugal, History of Spain
Relation
A related resource
<a href="http://journals.iai.spk-berlin.de/index.php/iberoamericana/article/view/362" target="_blank" rel="noreferrer noopener">http://journals.iai.spk-berlin.de/index.php/iberoamericana/article/view/362</a>
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https://www.socictopen.socict.org/files/original/17d94168170498f3dc432a298d02249b.pdf
5fd1bf258a3bfcfeac43490f3895b5e5
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
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The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Análisis de la estabilidad del arado FDN" de tracción animal"
Creator
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Armando Eloy García de la Figal Costales, Fidel Diego Nava
Description
An account of the resource
Para el análisis por los métodos de la estática de un arado de tracción animal, modelo FDN-fabricado en Oaxaca, México, se emplea un sistema de fuerzas en el plano longitudinal-vertical de movimiento, aplicado en puntos específicos del órgano de trabajo del mismo, a 1/3 y 1/4 de su profundidad de trabajo, cuyos valores varían de 440 a 1 200 N y de 20 a 260 N para la fuerza horizontal Rx y la vertical Rz, respectivamente y se conocen sus dimensiones, peso, centro de gravedad y punto de aplicación del tiro, el cual está inclinado ß de 200 y 180 respecto a la horizontal. Los resultados demuestran que para las condiciones antes señaladas, dicho arado de tracción animal puede estar en equilibrio estático -como primer principio de la estabilidad de los sistemas móviles planteado por Lyapunov- si se regulan o verticalmente el punto donde se acopla el arado al pértigo o timón, o la longitud del brazo del órgano de trabajo respecto al bastidor del arado, o ambos. Los desplazamientos verticales necesarios calculados varían en: desde 49,39 hasta 163,33 mm, para cuando ß=180 y de 11,16 a 128,24 mm para ß=200. La no realización de lo anterior, implicaría que el bastidor del arado giraría un ángulo ? de 4,760 a favor de las manecillas del reloj, hasta-1,020 en contra, para ß=180 y de 2,760 a favor, hasta -1,50 contrario a las manecillas del reloj, para ß=200.
Date
A point or period of time associated with an event in the lifecycle of the resource
2010
Source
A related resource from which the described resource is derived
Revista Ciencias Técnicas Agropecuarias
Publisher
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Universidad Agraria de La Habana
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture, Environmental technology. Sanitary engineering
Relation
A related resource
<a href="http://www.redalyc.org/articulo.oa?id=93218512013" target="_blank" rel="noreferrer noopener">http://www.redalyc.org/articulo.oa?id=93218512013</a>
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https://www.socictopen.socict.org/files/original/6c397642e478fe28b5d55c2e970b6045.pdf
3606cdeca1f10b21f4e5ff562915468b
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
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Title
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Percepción de los efectos vivenciales del cambio climático en una muestra de habitantes urbanos australes The perception of experiential effects of climate change in a sample of southern urban population
Creator
An entity primarily responsible for making the resource
CAROLINA NOVIÓN AICÓN, CLAUDIA ESTRADA GOIC
Description
An account of the resource
El cambio climático y sus efectos a corto y largo plazo sobre la vida humana, es uno de los temas que ha despertado mayor interés en diferentes disciplinas científicas. Aunque en el seno de la psicología no existen investigaciones sobre esta temática, resulta evidente que los cambios en el ambiente tienen impacto sobre el bienestar de las personas. El presente estudio procura medir la percepción de cambio climático y el bienestar psicológico, y establecer la existencia de una relación entre ambas variables. La investigación consiste en un estudio no experimental transversal correlacional, donde la muestra no probabilística accidental estuvo compuesta por 120 habitantes de la ciudad de Punta Arenas, a quienes se les aplicaron cuestionarios midiendo la percepción de la existencia y magnitud del cambio climático en la vida cotidiana, y el bienestar psicológico. Los resultados indican que existen dos grupos de perceptores, aquellos que perciben la presencia de cambio climático y aquellos que no. Además, dentro de aquellos que dicen percibir estos cambios, se encuentran los que los valoran positivamente para su vida cotidiana y aquellos que los vinculan con aspectos negativos. Finalmente, los datos muestran la existencia de una vinculación entre estas variables únicamente para el dominio “subjetivo” y para la dimensión de “dominio del entorno”; quienes presentan mayor percepción de cambio climático, sin importar si este es evaluado como positivo o negativo, presentan también una disminución de su bienestar psicológico.Climate change and its effects in the short and long term life human, is a topic that has attracted the most interest in different scientific disciplines. Even within psychology does not exist research on this subject, it is clear that changes in the environment have an impact on the welfare of people. The this study attempts to measure the perception of climate change and Psychological wellbeing and establish existence of a relationship between both variables. The research consists of a non-experimental cross correlation, where the probability accidental sample consisted of 120 inhabitants of the city of Punta Arenas, who were administered questionnaires measuring the perceived existence and magnitude of climate change in everyday life, and psychological wellbeing. The results indicate that there are two groups recipients, those who perceive the presence of climate change those who do not. Moreover, within those who claim to perceive these changes are the positive values for life daily and those that associate with negative aspects. Finally, the data show the existence of a link between these variables domain only for “subjective” and the dimension of “domain environment “, those with higher perception of climate change, without whether this is assessed as positive or negative, have also a decrease in psychological well-being.
Date
A point or period of time associated with an event in the lifecycle of the resource
2011
Subject
The topic of the resource
Cambio climático, Perception, bienestar psicológico, climate change, percepción, psychological well-being
Source
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Magallania
Publisher
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Universidad de Magallanes
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
History of scholarship and learning. The humanities, Social sciences (General), Anthropology
Relation
A related resource
<a href="http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-22442011000100006" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-22442011000100006</a>
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https://www.socictopen.socict.org/files/original/b98f0d3ac719bdf3db066411cb82b907.pdf
fea82b0c43d4716296927541902b6961
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Protein contribution of wild and domestic animals in rural, peri-urban and urban diets in different regions of Colombia
Creator
An entity primarily responsible for making the resource
Liliana Vanegas, Nathalie van Vliet, Daniel Cruz, François Sandrin
Description
An account of the resource
The present study aims to generate information about the importance of eating bushmeat over other sources of animal protein - wild (fish), domestic or industrial- in four regions of Colombia, from the rural to the urban. The data of animal protein consumption of 1808 students in 23 rural, urban and peri-urban schools were analyzed. In urban and peri-urban areas, the most consumed animal proteins result from domestic or industrial (industrial chicken industrial egg and beef) origin, while in rural areas the fish ranks first. Bushmeat was consumed by 8 % of children in rural areas, 3 % of children in peri-urban areas and 2 % of children in urban areas. Large regional differences were observed in the Pacific region where bushmeat was most consumed. Our study shows that nutritional transition from rural to urban is characterized by the replacement of the wild protein consumption (fish and bushmeat), by domestic and industrial protein consumption, together with considerable loss of dietary diversity.
Date
A point or period of time associated with an event in the lifecycle of the resource
2016
Subject
The topic of the resource
Carne de monte, Gradiente de urbanismo, Proteínas silvestres, nutrición, seguridad alimentaria
Identifier
An unambiguous reference to the resource within a given context
10.21068/bc.v17i1.397
Source
A related resource from which the described resource is derived
Biota Colombiana
Publisher
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Instituto de Investigación de Recursos Biológicos Alexander von Humboldt
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Biology (General)
Relation
A related resource
<a href="http://revistas.humboldt.org.co/index.php/biota/article/view/397" target="_blank" rel="noreferrer noopener">http://revistas.humboldt.org.co/index.php/biota/article/view/397</a>
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https://www.socictopen.socict.org/files/original/dfe0672cc1a32691504703cc1e5da105.pdf
2bdd48c5824c25bfbf23d9a252dd071d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Las masas forestales como sumideros de co2 ante un cambio climático global
Creator
An entity primarily responsible for making the resource
G. E. Rojo Martínez, J. Jasso Mata, A. Velásquez Martínez
Description
An account of the resource
Se realizó un acopio de datos bibliográficos sobre la importancia de la absorción, retención y medición de carbono en las masasforestales, con especial referencia a los bosques y plantaciones forestales, incluyendo información de la fijación de carbono demasas arbóreas de México. Se enfatiza finalmente, la importancia de las masas forestales como sumideros de carbono (incluyendolos desconocidos) y la optimización de este recurso. Se concluye que las masas forestales, juegan un papel importante en la fijacióny retención del carbono emitido antrópicamente a la atmósfera, por lo que la reducción de las emisiones es el factor principal a dondedebe ir encaminado el esfuerzo de los gobiernos, aunado a una mayor sensibilidad de la población en la reducción de estas emisionesy la práctica de métodos sostenibles de manejo forestal..
Date
A point or period of time associated with an event in the lifecycle of the resource
2003
Source
A related resource from which the described resource is derived
Revista Chapingo: Serie Ciencias Forestales y del Ambiente
Publisher
An entity responsible for making the resource available
Universidad Autónoma Chapingo
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Forestry
Relation
A related resource
<a href="http://www.redalyc.org/articulo.oa?id=62990106" target="_blank" rel="noreferrer noopener">http://www.redalyc.org/articulo.oa?id=62990106</a>
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https://www.socictopen.socict.org/files/original/1c6378db87a15adeb115f6ea0d3fe82a.pdf
b1853e3b210308d97de1cc2bc7eb96ab
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Merging Metallic Catalysts and Sonication: A Periodic Table Overview
Creator
An entity primarily responsible for making the resource
Giancarlo Cravotto, Claudia E. Domini, Mónica B. Álvarez, Gustavo F. Silbestri, Pedro Cintas
Description
An account of the resource
This account summarizes and discusses recent examples in which the combination of ultrasonic waves and metal-based reagents, including metal nanoparticles, has proven to be a useful choice in synthetic planning. Not only does sonication often enhance the activity of the metal catalyst/reagent, but it also greatly enhances the synthetic transformation that can be conducted under milder conditions relative to conventional protocols. For the sake of clarity, we have adopted a structure according to the periodic-table elements or families, distinguishing between bulk metal reagents and nanoparticles, as well as the supported variations, thus illustrating the characteristics of the method under consideration in target synthesis. The coverage focuses essentially on the last decade, although the discussion also strikes a comparative balance between the more recent advancements and past literature.
Date
A point or period of time associated with an event in the lifecycle of the resource
2017
Subject
The topic of the resource
Organic Synthesis, metal catalysts, nanoparticles, sonication, supported metal reagent/catalyst, ultrasound
Identifier
An unambiguous reference to the resource within a given context
10.3390/catal7040121
Source
A related resource from which the described resource is derived
Catalysts
Publisher
An entity responsible for making the resource available
MDPI AG
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Chemistry, Chemical technology
Relation
A related resource
<a href="http://www.mdpi.com/2073-4344/7/4/121" target="_blank" rel="noreferrer noopener">http://www.mdpi.com/2073-4344/7/4/121</a>
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https://www.socictopen.socict.org/files/original/d3e79d5336c269d9498547bc224d11dc.pdf
392c5c4695711211a521110d3d223572
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Contrasting Response to Drought and Climate of Planted and Natural <i>Pinus pinaster</i> Aiton Forests in Southern Spain
Creator
An entity primarily responsible for making the resource
Carlos Rodriguez-Vallejo, Rafael M. Navarro-Cerrillo
Description
An account of the resource
Extreme drought events and increasing aridity are leading to forest decline and tree mortality, particularly in populations near the limits of the species distribution. Therefore, a better understanding of the growth response to drought and climate change could show the vulnerability of forests and enable predictions of future dieback. In this study, we used a dendrochronological approach to assess the response to drought in natural and planted forests of the maritime pine (Pinus pinaster Aiton) located in its southernmost distribution (south of Spain). In addition, we investigated how environmental variables (climatic and site conditions) and structural factors drive radial growth along the biogeographic and ecological gradients. Our results showed contrasting growth responses to drought of natural and planted stands, but these differences were not significant after repeated drought periods. Additionally, we found differences in the climate−growth relationships when comparing more inland sites (wet previous winter and late spring precipitation) and sites located closer to the coast (early spring precipitation). Response functions emphasized the negative effect of defoliation and drought, expressed as the June standard precipitation-evapotranspiration index calculated for the 12-month temporal scale and the mean temperature in the current February, on growth. The strong relationship between climatic variables and growth enabled acceptable results to be obtained in a modeling approach. The study and characterization of this tree species’ response to drought will help to improve the adaptive management of forests under climate change.
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
Subject
The topic of the resource
Drought, climate change, dendroecology, forest decline, maritime pine
Identifier
An unambiguous reference to the resource within a given context
10.3390/f10070603
Source
A related resource from which the described resource is derived
Forests
Publisher
An entity responsible for making the resource available
MDPI AG
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Plant ecology
Relation
A related resource
<a href="https://www.mdpi.com/1999-4907/10/7/603" target="_blank" rel="noreferrer noopener">https://www.mdpi.com/1999-4907/10/7/603</a>
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https://www.socictopen.socict.org/files/original/443f0401392e48f5e398228bc0f1b0d0.pdf
4e04e0bdbcfefaae654346b8a1ed3291
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Potencial de mitigación de proyectos de transporte activo: indicadores de atracción de viajes y emisiones CO2 en ciudades colombianas
Creator
An entity primarily responsible for making the resource
Juan Felipe Franco, Mónica Espinosa, Jose Pacheco
Description
An account of the resource
El contexto global de cambio climático y los recientes compromisos internacionales del país en reducción de emisiones de gases efecto invernadero, son una oportunidad para incentivar proyectos en movilidad sostenible. En este estudio se estimaron indicadores de atracción de viajes y emisiones de dióxido de carbono (CO2) evitadas para medidas relacionadas con la promoción del uso de la bicicleta a nivel urbano. Los indicadores obtenidos se aplicaron en distintos escenarios para dos ciudades colombianas. De las medidas evaluadas, la construcción de ciclorrutas y bicicarriles es la que mayor atracción de viajes genera con 455 viajes/km de infraestructura–día. El potencial de reducción de emisiones de CO2 cambia significativamente entre las medidas estudiadas y con el tamaño de la ciudad, los resultados para este indicador estuvieron entre los 92 gCO2/viaje hasta 810 gCO2/viaje. Estos indicadores representan una herramienta simple y flexible para contar con una aproximación al potencial de mitigación del cambio climático de proyectos en transporte activo en el contexto de ciudades de América Latina. En particular cuando se requiera una evaluación ex-ante como requisito inicial para acceder a fondos de financiación.
Date
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2018
Subject
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Cambio climático, Gases efecto invernadero, Sostenibilidad urbana, emisiones, transporte no motorizado
Identifier
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10.15446/dyna.v85n205.68340
Source
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Dyna
Publisher
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Universidad Nacional de Colombia
Coverage
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Technology, Mining engineering. Metallurgy
Relation
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<a href="https://revistas.unal.edu.co/index.php/dyna/article/view/68340" target="_blank" rel="noreferrer noopener">https://revistas.unal.edu.co/index.php/dyna/article/view/68340</a>
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https://www.socictopen.socict.org/files/original/e24a473a994594753e2573347733cf82.pdf
88a42dedfdecb5cb386fe209aa96ffab
Dublin Core
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Title
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Agricultura sostenible
Description
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Dominio científico: Agricultura sostenible
Text
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Organic matter characterization and decomposition dynamics in sub-Antarctic streams impacted by invasive beavers Caracterización de la materia orgánica y la dinámica de descomposición en arroyos subantárticos impactados por castores invasores
Creator
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CHRISTOPHER B ANDERSON, Alejandro E.J. Valenzuela, Erica Ulloa, Marcelo Ardón, Silvia Murcia
Description
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Despite being a relatively remote and well conserved area, the sub-Antarctic ecoregion faces pressing global threats from climate change, the ozone hole and introduced species. Its freshwater ecosystems are one of the least studied components of this biome, but they are known to confront a host of invasive taxa including trout and beavers. We set out to understand the basic characterization and dynamics of organic matter processing and decomposition in sub-Antarctic streams under natural forest (NF) conditions and in ponds constructed by North American beavers (Castor canadensis) (BP). We found these streams have a naturally stable benthic organic matter regime throughout the year with a peak in leaf input from Nothofagus pumilio in autumn. Beaver ponds significantly increased the retention of organic matter and caused significantly higher decomposition rates, probably associated with increased density and biomass of Hyalella spp. As expected, leaf decay rates for N. pumilio, a deciduous species, were higher (NF: -0.0028 day- ± 0.0001 SE; BP: -0.0118 day-1 ± 0.0009 SE) than N. betuloides (a broad-leaf evergreen) (NF: -0.0018 day-1 ± 0.0005 SE; BP: -0.0040 day-1 ± 0.0003 SE). Overall these results indicate that the naturally low decomposition rates (slower than 89% of a global survey of decay rates) for these cold, oligotrophic streams are being modified by introduced beavers to resemble more temperate latitudes.A pesar de ser una zona relativamente remota y bien conservado, la ecorregión subantártica se enfrenta a presiones por amenazas globales por el cambio climático, el agujero de ozono y las especies introducidas. Los ecosistemas de agua dulce son uno de los componentes menos estudiados de este bioma, pero se sabe que enfrentan una serie de taxones invasivos como la trucha y los castores. El propósito de este estudio es entender la caracterización básica y dinámica de descomposición de la materia orgánica en arroyos subantárticos de bosques naturales (NF) y condiciones de los estanques construidas por diques del castor norteamericano (Castor canadensis) (BP). Todos los arroyos estudiados presentaron un régimen naturalmente estable de materia orgánica bentónica, durante todo el ano, con un mayor ingreso de hojas de Nothofagus pumilio en el otono. La retención de materia orgánica aumentó significativamente en BP y causó una mayor tasa de descomposición, probablemente asociada a una mayor densidad y biomasa de Hyalella spp. Como era de esperar, las tasas de descomposición de hojas de N. pumilio, una especie de hoja caduca, fueron mayores (NF: -0,0028 día-1 ± 0,0001 SE; BP: -0,0118 día-1 ± 0,0009 SE) que las de N. betuloides, un árbol de hoja ancha perenne (NF: -0,0018 día-1 ± 0,0001 SE; BP: -0,004 d-1 ± 0,0003 SE). En general, estos resultados que las bajas tasas de descomposición natural (menores al 89% de los casos reportados), para estas corrientes frías y oligotróficas, están siendo modificadas por los castores introducidos, haciéndolas parecerse a aquellas provenientes de arroyos de latitudes más templadas.
Date
A point or period of time associated with an event in the lifecycle of the resource
2012
Subject
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Castor canadensis, Ciclo de carbono, Decomposition, Nothofagus, carbon cycle, decay rate, descomposición, leaf packs, paquete de hojas, tasa de descomposición
Source
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Latin American Journal of Aquatic Research
Publisher
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Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso
Coverage
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Biology (General), Oceanography, Aquaculture. Fisheries. Angling
Relation
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<a href="http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000400006" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000400006</a>