2040
10
20655
-
https://www.socictopen.socict.org/files/original/5dca785a0111cb4e4f513c191437397c.pdf
70f5c3948e306c6d3bc1fbbb1f0b4de7
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
Daily and seasonal limits of time and temperature to activity of degus Limitaciones diarias y estacionales de tiempo y temperatura sobre la actividad de degus
Creator
An entity primarily responsible for making the resource
FRANCISCO BOZINOVIC, ROBERTO F. NESPOLO, G.J. KENAGY, RODRIGO A. VÁSQUEZ
Description
An account of the resource
We present an analysis of behavioral flexibility in a day-active caviomorph rodent, the degu, Octodon degus, in response to temporal (daily and seasonal), spatial, and thermal heterogeneity of its environment. We quantified activity and foraging behavior in a population, together with thermal conditions, in an open habitat in the seasonally hot and arid matorral of central Chile. Summer activity was bimodal, with a gap of more than 8 h between the morning bout of 2.5 h of intensive foraging and the afternoon bout of 2 h. More than half of the 4.5 h of summer activity occurred in the shade of early morning or late afternoon when the sun was below the local skyline. Autumn and spring activity were also bimodal, but with greater proportions of activity under direct solar radiation, and with a shorter midday gap between the two major bouts. Winter activity was unimodal and all occurred under direct solar radiation. In summer, autumn, and spring the activity of degus was curtailed as our index of operative temperature, Te, moved above 40 ºC. We used a single measurement of Te (measured in a thermal mannequin representing degu size, shape and surface properties) as an index of the interactive effects of solar radiation and convection on body temperature. At the winter solstice (June), when degus remained fully exposed to solar radiation throughout the day, Te generally remained below 30 ºC. Flexibility in the timing of surface activity allows degus to maintain thermal homeostasis and energy balance throughout the year. Degus shift the times of daily onset and end of activity and the number of major bouts (unimodal or bimodal) over the course of the year. They remain active on the surface under a much narrower range or 'window' of thermal conditions than those that occur over the entire broad range of the day and yearPresentamos un análisis de la flexibilidad conductual en la actividad diaria del degu (Octodon degus), un roedor caviomorfo, en respuesta a la heterogeneidad del ambiente temporal (diario y estacional), espacial y térmico. Junto con las condiciones térmicas, cuantificamos la conducta de actividad y forrajeo en una población que vive en un hábitat abierto en el matorral árido y estacional de Chile central. La actividad de verano fue bimodal, con 2,5 h de actividad de forrajeo intenso durante la mañana y con 2 h durante la tarde. No hubo actividad por mas de 8 h entre ambos eventos. Más de la mitad de las 4,5 h diarias de actividad de la mañana y de la tarde ocurrieron en la sombra, cuando el sol se encuentra bajo la línea local del cielo. La actividad durante el otoño y la primavera también fue bimodal pero con una mayor proporción de actividad bajo radiación solar directa y con un período de inactividad menor entre los dos eventos principales. La actividad de invierno fue unimodal y bajo radiación solar directa. En verano, otoño y primavera la actividad estuvo sesgada cuando nuestro índice de temperatura operativa, Te, superó los 40 °C. Usamos una medida de Te (registrada en un maniquí térmico que representa las propiedades de forma, tamaño y superficie de un degu) como un índice de los efectos interactivos de la radiación solar y la convección sobre la temperatura corporal. Durante el solsticio de invierno (junio), cuando los degus permanecieron todo el día totalmente expuestos al sol, Te generalmente permaneció bajo 30 °C. La flexibilidad en el tiempo de la actividad superficial le permitió a los degus mantener su homeostasis térmica y balance de energía anual. Los degus cambiaron sus períodos de inicio y término así como el número de eventos de actividad (unimodal o bimodal) durante el año. Estos roedores permanecieron activos en la superficie bajo un rango mucho más estrecho de condiciones térmicas que las que ocurren durante el largo del día y año
Date
A point or period of time associated with an event in the lifecycle of the resource
2002
Subject
The topic of the resource
Chile, Octodon degus, ecología térmica, estacionalidad, foraging, forrajeo, seasonality, thermal ecology
Source
A related resource from which the described resource is derived
Revista Chilena de Historia Natural
Publisher
An entity responsible for making the resource available
BMC
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Botany, Zoology
Relation
A related resource
<a href="http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000300008" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000300008</a>
-
https://www.socictopen.socict.org/files/original/058d8eba145649df8998bf6ad257ad71.pdf
cb9836ed966bc333014743f6b6bc1292
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
Grupos vulnerables y su caracterización como criterio de discriminación de la seguridad alimentaria y nutricional en Brasil Vulnerable groups and their characterization like a discrimination criterion of food and nutritional security in Brazil
Creator
An entity primarily responsible for making the resource
Dixis Figueroa Pedraza
Description
An account of the resource
Los grupos más expuestos a la Inseguridad Alimentaria y Nutricional son los que figuran en cualquier lista de 'desposeídos'. Las familias más afectadas son aquellas más vulnerables a la degradación del medio ambiente, que viven en malas condiciones sanitarias, de contaminación y superpoblación; cuando esto se asocia al grupo materno infantil la vulnerabilidad queda reforzada. Si importante es la cantidad de personas con subnutrición y desnutrición, también lo es definir: quiénes son, dónde están, los alimentos que suelen consumir y las causas del problema - soluciones. Nuestra caracterización de los posibles grupos vulnerables en Brasil sigue dos perspectivas: datos relacionados con la pobreza y los criterios para la clasificación de grupos vulnerables de la FAO (perspectiva que refiere criterios personales, pues no existen abordajes de este tipo en la literatura científica). La alta concentración de renta de Brasil hace que los pobres tengan escasos recursos para comprar una cesta básica de alimentos, implicando mayor vulnerabilidad. Se pueden observar diferencias entre: áreas urbanas y rurales, áreas no-metropolitanas y metropolitanas, y entre las regiones nordeste y norte en relación con las demás. Cabe destacar las importantes influencias étnicas, culturales y migratorias que sobre estos grupos de personas pesan y que los hacen vulnerables.The more exposed people to Food and Nutritional Insecurity comprise the list of the 'dispossessed'. The most affected families are the ones more vulnerable to environment degradation, living in bad sanitary conditions, contamination and high demographic rates; when this is associated to the maternal and children group vulnerability becomes more accentuated. The quantification of malnourished and undernourished people is as important as determining who they are, where they are, their food habits and the causes and solutions for the problem. Our definition of possible vulnerable groups in Brazil follows two perspectives: poverty related data and FAO's vulnerable group classification (perspectives containing personal criteria, for there are no approaches of the type in scientific literature). High income concentration in Brazil results that the poor have insufficient resources to buy food implying in more vulnerability. There are differences between: urban and rural areas, metropolitan and non-metropolitan areas, and between the Northeast and Northern regions as related to other regions. There are important ethnic, cultural and migration factors involving the more vulnerable groups.
Date
A point or period of time associated with an event in the lifecycle of the resource
2005
Subject
The topic of the resource
Alimentación, desnutrición, feeding, grupos vulnerables, malnutrition, risk groups
Identifier
An unambiguous reference to the resource within a given context
10.1590/S1519-38292005000300013
Source
A related resource from which the described resource is derived
Revista Brasileira de Saúde Materno Infantil
Publisher
An entity responsible for making the resource available
Instituto Materno Infantil de Pernambuco
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Gynecology and obstetrics
Relation
A related resource
<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-38292005000300013" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-38292005000300013</a>
-
https://www.socictopen.socict.org/files/original/ae390b35d9053945489d964b0d0c298d.pdf
2e2d229ad49e29dcb61abf6db8d64330
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
La ecología alimentaria del pez endémico Girardinichthys multiradiatus (Cyprinidontiformes: Goodeidae), en el Parque Nacional Lagunas de Zempoala, México
Creator
An entity primarily responsible for making the resource
Patricia Trujillo-Jiménez, Efrén Espinosa de los Monteros Viveros
Description
An account of the resource
Girardinichthys multiradiatus, conocido comúnmente como 'mexcalpique' un pequeño pez endémico de la cuenca del río Lerma, cuya presencia en el parque Nacional Lagunas de Zempoala, sugiere una antigua conexión entre estos lagos y la cuenca. El área de distribución actual en la porción del valle de México y Toluca se ha visto reducida, por lo que este parque representa un refugio para la especie. Sin embargo, se conoce poco de la biología del mexcalpique. Presentamos datos sobre su dieta y hábitos alimentarios. El estudio se realizó en el Lago Acoyotongo del Parque Nacional Lagunas de Zempoala mediante muestreos estacionales. La identificación del contenido estomacal (97 ejemplares) se llevó hasta el taxón más específico posible. Para la cuantificación se utilizaron los métodos numérico y frecuencia de aparición. La dieta general de esta especie se encuentra constituida por doce componentes alimenticios, de los cuales once son de origen animal. Himenópteros, colémbolos y quironómidos fueron los que presentaron los mayores porcentajes de ingestión y preferencia. Esta es una especie carnívora con tendencias insectívorasThe feeding ecology of the endemic fish Girardinichthys multiradiatus (Cyprinidontiformes: Goodeidae) in Lagunas of Zempoala National Park, Mexico. Girardinichthys multiradiatus, locally known as 'mexcalpique', is a small endemic fish of the Lerma river basin. Its presence in lakes (Zempoala) suggests a long-standing connection between these lakes and the river basin. The current range of this species in the Mexico and Toluca valley appears to have been reduced, making this park a refuge for the species. Nevertheless, little is known about its biology. We studied its diet and feeding habits in Acoyotongo Lake, Lagunas de Zempoala National Park (19°01’30'-19°06’ N, 99°16’20'-99°21’ W) where seasonal collections were carried out. The gut contents of 97 specimens were identified to the most specific taxonomic category possible and analyzed with numeric and frequency of occurrence methods. The general diet of this species consists of twelve dietary components, eleven of which are of animal origin. Hymenopterans, springtails and chironomids represented the highest percentage of ingestion and preference. G. multiradiatus is as a carnivorous species with entomophagous tendencies. Rev. Biol. Trop. 54 (4): 1247-1255. Epub 2006 Dec. 15
Date
A point or period of time associated with an event in the lifecycle of the resource
2006
Subject
The topic of the resource
Girardinichthys multiradiatus, Goodeidae, Zempoala, carnivorous, carnívoro, ecología alimentaria, feeding ecology
Source
A related resource from which the described resource is derived
Revista de Biología Tropical
Publisher
An entity responsible for making the resource available
Vicerractoría Investigación
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://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000400023" target="_blank" rel="noreferrer noopener">http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000400023</a>
-
https://www.socictopen.socict.org/files/original/0cfca7267d9fd0ff4ee043525899eb4c.pdf
2d21debdd055786855eeb849bc95e62f
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
Variabilidad genética de la bacteria Ralstonia solanacearum (Burkholderiales: Burholderiaceae) en la zona bananera de Urabá (Colombia)
Creator
An entity primarily responsible for making the resource
Carolina Cardozo, Paola Rodríguez, José Miguel Cotes, Mauricio Marín
Description
An account of the resource
La enfermedad del moko de las musáceas, causada por la bacteria Ralstonia solanacearum, es uno de los problemas fitopatológicos más importantes de la agroindustria del banano en los países tropicales. En Urabá y el Magdalena (Colombia), las principales regiones exportadoras de banano en Colombia, esta enfermedad provoca una destrucción estimada en 16.5ha/año. La bacteria presenta un nivel extremadamente alto de variación genética que afecta las medidas de control. Este es el primer estudio de su variación en Colombia y se hizo con los marcadores moleculares AFLP en una población de 100 aislamientos de plantas de banano, suelos y arvenses. El alto nivel de diversidad genética, con índices de Nei y de Shannon de h=0,32 y I=0,48, respectivamente, y la AMOVA, demostró que esta población es subestructurada (Fst=0,66): el hospedero es el principal factor de diferenciación. Aun así, las pruebas anteriores mostraron que todas las variedades presentan patogenicidad en Musa.Genetic variability of the bacterium Ralstonia solanacearum (Burkholderiales: Burholderiaceae) in the banana-growing region of Uraba (Colombia). The banana moko disease, caused by the bacterium Ralstonia solanacearum, is one of the most important phytopathological problems of the banana agribusiness in tropical countries. In Uraba and Magdalena (Colombia), the main exporting regions of banana in Colombia, this disease causes a destruction estimated in 16.5ha/year. The bacterium presents an extremely high level of genetic variation that affects control measures. This is the first study of its variation in Colombia and was done with AFLP molecular markers on a population of 100 isolates from banana plants, soils and 'weeds'. The high level of genetic diversity, with Nei and Shannon indexes of h=0.32 and I=0.48, respectively, and the AMOVA, showed that this population is subestructured (Fst=0.66): the host is the main factor of differentiation. Even so, previous tests show that all varieties have pathogenicity on Musa. Rev. Biol. Trop. 58 (1): 31-44. Epub 2010 March 01.
Date
A point or period of time associated with an event in the lifecycle of the resource
2010
Subject
The topic of the resource
AFLP, Moko disease, Musa sp, Ralstonia solanacearum, enfermedad del Moko, marcadores moleculares, molecular markers
Source
A related resource from which the described resource is derived
Revista de Biología Tropical
Publisher
An entity responsible for making the resource available
Vicerractoría Investigación
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://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000100003" target="_blank" rel="noreferrer noopener">http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000100003</a>
-
https://www.socictopen.socict.org/files/original/203d2c7befea46795c48320e118bd44a.pdf
9e3f8ec5c4d7fb48f9d94209eb5289cf
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
Ecología trófica de los ostreros Haematopus palliatus pitanay (Murphy 1925) y Haematopus ater (Vieillot et Oudart 1825) en mantos del tunicado Pyura praeputialis (Heller 1878) en la Bahía de Antofagasta, Chile Trophic ecology of the oystercatchers Haematopus palliatus pitanay (Murphy 1925) and Haematopus ater (Vieillot et Oudart 1825) on beds of the tunicate Pyura praeputialis (Heller 1878) in the Bay of Antofagasta, Chile
Creator
An entity primarily responsible for making the resource
JUAN C. CASTILLA, CRISTIAN J. PACHECO
Description
An account of the resource
En Antofagasta, norte de Chile, coexisten dos especies de ostreros: Haematopus palliatus pitanay (ostrero blanco) y Haematopus ater (ostrero negro). Ambas especies depredan en un sistema rocoso intermareal peculiar cuya franja media se encuentra dominada por el tunicado Pyura praeputialis (= Pyura stolonifera bradleyi; Kott 1997). En la literatura se discute sobre las diferencias morfológicas del pico (largo y ancho) entre ambos tipos de ostreros. Dichas diferencias podrían segregar los roles de forrajeo de estas aves cuando comparten un mismo hábitat: los ostreros blancos atacarían preferentemente a presas de textura 'blanda' y los ostreros negros atacarían presas de textura 'dura' (i.e. cobertura calcárea). En este trabajo se consideró a P. praeputialis (piure de Antofagasta) como una presa de textura 'blanda', ya que su tunica, compuesta por tunicina, es suave y flexible. En el estudio se comparan diversos aspectos ecológicos entre ambas especies de ostrero tales como: (a) abundancia de ostreros y de otras aves costeras que depredan sobre P. praeputialis, (b) distribución espacial de los ostreros en el manto de piure durante sus actividades de depredación, (c) tallas de piures preferidos, (d) tiempos de manipulación, (e) tasa de consumo y (f) frecuencia de consumo de otros invertebrados distintos del piure. Los resultados señalan a H. palliatus pitanay como la especie de ostrero que ataca con mayor frecuencia a P. praeputialis. Por otra parte, H. ater ataca con mayor frecuencia presas de textura 'dura' como: lapas, caracoles, choritos, erizosAt Antofagasta, northern Chile, two oystercatcher species coexist: the white oystercatcher, Haematopus palliatus pitanay and the black oystercatcher H. ater. Both species forage on an intertidal system where the middle fringe is dominated by the tunicate Pyura praeputialis (= Pyura stolonifera bradleyi; Kott 1997). According to the literature, differences in the morphology of their bills (length and width) segregate the foraging roles of white and black oystercatchers when the birds coexist in the same habitat. H. palliatus pitanay is best adapted for capturing soft bodied preys, while black oystercatcher H. ater attack 'hard' preys (i.e. preys with calcareous shells). We consider here that the tunicate P. praeputialis as a soft bodied prey because the tunic, composed of tunicine, is soft and pliable. We compare ecological aspects between the two oystercatchers species in Antofagasta, such as: (a) abundance of oystercatchers and other coastal birds preying on P. praeputialis, (b) the spatial distribution of the oystercatchers in the Pyura bed during foraging periods, (c) Pyura size preferences of oystercatchers, (d) handling time, (e) consumption rate and (f) preference of other invertebrates prey items distinct from Pyura. The results show that H. palliatus pitanay attacks more frequently Pyura than H. ater, and that H. ater attacks more frequently 'hard' preys such as: limpets, snails, mussels and sea urchins.
Date
A point or period of time associated with an event in the lifecycle of the resource
2000
Subject
The topic of the resource
Chile, Haematopus, Pyura, Trophic ecology, ecología trófica, intermareal rocoso, ostreros, oystercatchers, rocky intertidal, tunicados, tunicate
Source
A related resource from which the described resource is derived
Revista Chilena de Historia Natural
Publisher
An entity responsible for making the resource available
BMC
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Botany, Zoology
Relation
A related resource
<a href="http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300017" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300017</a>
-
https://www.socictopen.socict.org/files/original/b9cb38ba214693f20b51408703ef364c.pdf
ddba1812bd7d7992034e494a51761e1b
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
Crimen y violencia urbana. Aportes de la ecología del delito al diseño de políticas públicas
Creator
An entity primarily responsible for making the resource
Liliana Manzano Chávez, Mauricio Olavarría Gambi, Ximena Tocornal Montt, Hugo Fruhling Erlich
Description
An account of the resource
Este artículo presenta la investigación, con el mismo título de este artículo, adjudicada en el II Concurso de Anillos de Investigación en Ciencias Sociales, en marzo del 2008, por CONICYT. La pregunta que da inicio a la investigación es ¿Cómo abordar el fenómeno del crimen y violencia urbana? Para responder la pregunta la investigación se ha centrado en el marco conceptual provisto por la Teoría Ecológica del Delito y el concepto de 'eficacia colectiva del barrio'. La investigación espera producir conocimiento relevante en el área, basado en evidencia empírica, que permita contribuir significativamente al diseño de políticas públicas integrales que aborden los variados aspectos que concurren a la seguridad ciudadana.
Date
A point or period of time associated with an event in the lifecycle of the resource
2008
Source
A related resource from which the described resource is derived
Revista INVI
Publisher
An entity responsible for making the resource available
Universidad de Chile
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Architecture, Fine Arts
Relation
A related resource
<a href="http://www.redalyc.org/articulo.oa?id=25806402" target="_blank" rel="noreferrer noopener">http://www.redalyc.org/articulo.oa?id=25806402</a>
-
https://www.socictopen.socict.org/files/original/8462e085721aa0f77045c0bf63352b2b.pdf
2436a09eed07ec0ec82407ab5a907446
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
Marine habitats map of 'Isla del Caño', Costa Rica, comparing Quickbird and Hymap images classification results
Creator
An entity primarily responsible for making the resource
Carlomagno Soto, Jorge Cortés, A.C Fonseca, Héctor M Guzmán
Description
An account of the resource
Isla del Caño is a marine protected area on the south Pacific coast of Costa Rica, surrounded by coral reefs and coral communities. The ecology of these coral reefs has been studied for over 20 years, but they have not been mapped. Maps are considered a great research, planning, management and monitoring tool. Medium to high resolution images (HyMap 2005 and Quickbird 2007 respectively) were processed and classified in order to test and compare their accuracy in producing a marine habitat map. Manta tow surveys were performed in the field for identification of 7 marine habitats 1. Coral community; 2. Coral reef; 3. Bed rock; 4. Sand; 5. Sand with boulders; 6. Sand with rodolyths; and 7. Deep water. The overall accuracy was slightly higher using Quickbird (87%) than using Hymap (60%), however the difference was not significant. The map produced using Quickbird was selected to represent the marine habitats of Isla del Caño. This map will help to analyze the adequate size and zoning of the marine protected area. Rev. Biol. Trop. 58 (1): 373-381. Epub 2010 March 01.Isla del Caño es un área marina protegida en la costa del Pacífico de Costa Rica y está rodeada de arrecifes coralinos. La ecología de estos arrecifes coralinos ha sido estudiada a lo largo de 20 años pero todavía no habían sido mapeados. Los mapas son considerados una buena herramienta de investigación, planificación, manejo y monitoreo. Imágenes de mediana y alta resolución (Hymap 2005 y Quickbird 2007 respectivamente) fueron procesadas y clasificadas con el fin de evaluar y comparar su desempeño en la elaboración de un mapa de hábitats marinos. En el campo se realizaron sondeos tipo Manta para la identificación de siete hábitats marinos: 1. Comunidad coralina; 2. Arrecife coralino; 3. Roca; 4. Arena; 5. Arena con cantos; 6. Arena con rodolitos; y 7. Agua profunda. La exactitud de la clasificación resultó un poco mayor usando Quickbird (87%) que Hymap (60%), sin embargo la diferencia no era significativa. Se seleccionó el mapa resultante de la clasificación con Quickbird para representar los hábitats marinos de Isla del Caño. Este mapa puede ayudar a analizar el tamaño adecuado y la zonificación del área marina protegida.
Date
A point or period of time associated with an event in the lifecycle of the resource
2010
Subject
The topic of the resource
Costa Rica, HyMap, Isla del Caño, QuickBird, arrecifes de coral, coral reef, mapa de hábitats marinos, marine habitat map
Source
A related resource from which the described resource is derived
Revista de Biología Tropical
Publisher
An entity responsible for making the resource available
Vicerractoría Investigación
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://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000100027" target="_blank" rel="noreferrer noopener">http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000100027</a>
-
https://www.socictopen.socict.org/files/original/7fe3e7501437ae9a1bd422bbccaa3af5.pdf
7dc2d717992975747b09f1af6c2b49bc
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
Mudanças climáticas: aquecimento e esfriamento
Creator
An entity primarily responsible for making the resource
Henrique Rattner
Description
An account of the resource
<span style='font-size: 12.0pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-ansi-language: PT-BR; mso-fareast-language: PT-BR; mso-bidi-language: HE;'>Ap&oacute;s in&uacute;meras reuni&otilde;es e confer&ecirc;ncias nacionais, regionais e internacionais, nas quais se destacam a COP-15 realizada em 2009 em Copenhague, a COP-16 de 2010 realizada em Cancun, M&eacute;xico e a pr&oacute;xima, programada para realizar-se em Durban, &Aacute;frica do Sul, em 2011, &eacute; preciso admitir que os debates, sobretudo as medidas concretas para conter o aquecimento global pouco tem progredido, apesar dos Protocolos anteriormente assinados de Kyoto (1995) e de Montreal (1987) e v&aacute;rios outros.&nbsp;</span>
Date
A point or period of time associated with an event in the lifecycle of the resource
2011
Subject
The topic of the resource
Política Internacional, ecología, economía mundial, meio ambiente
Source
A related resource from which the described resource is derived
Revista Espaço Acadêmico
Publisher
An entity responsible for making the resource available
Universidade Estadual de Maringá
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 (General)
Relation
A related resource
<a href="http://periodicos.uem.br/ojs/index.php/EspacoAcademico/article/view/13317" target="_blank" rel="noreferrer noopener">http://periodicos.uem.br/ojs/index.php/EspacoAcademico/article/view/13317</a>
-
https://www.socictopen.socict.org/files/original/3513fabe1985428a50032a0ebde1d805.pdf
6fa14b23dc0c1e85bf990a58ec44a3fc
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
Validación de escala de la seguridad alimentaria doméstica en Antioquia, Colombia Validation of a household food security scale in Antioquia, Colombia
Creator
An entity primarily responsible for making the resource
Hugo Melgar-Quiñonez, Marta Cecilia Álvarez, Alejandro Estrada, Elizabeth Cristina Montoya
Description
An account of the resource
OBJETIVO: Adaptar y validar en hogares de Antioquia, Colombia, una escala de seguridad alimentaria anteriormente aplicada en hogares de Caracas, Venezuela. MATERIAL Y MÉTODOS: El estudio se realizó en 44 municipios del departamento de Antioquia, Colombia, durante los años 2003 y 2004, en una muestra representativa de los hogares rurales y urbanos del departamento de Antioquia, constituida por 1 624 hogares con niños menores de 10 años; los hogares fueron seleccionados de manera aleatoria, con un índice de confianza de 95% y un error de 3%. Se validó la escala de seguridad alimentaria doméstica utilizada por Paulina Lorenzana en Venezuela, y se determinó la consistencia interna de la escala mediante el coeficiente de correlación de Spearman y el coeficiente alfa de Cronbach. La validez del constructo se estableció mediante el método de componentes principales para datos categóricos. Se utilizaron el procedimiento de Prinqual y el modelo de Rasch para definir los componentes y los ��tems de la escala. RESULTADOS: El análisis factorial arrojó dos componentes: 1) las variables relacionadas con 'inseguridad alimentaria sin hambre' que lo explican en 95% y 2) las relacionadas con 'inseguridad alimentaria con hambre' que lo explican en 89.4%. El coeficiente alfa de Cronbach para el primer componente fue de de 0.95 y para el segundo de 0.89. Al ser analizados con el modelo Rasch, todos los ítems presentaron valores infit en un rango de 0.8 a 1.2. La escala se correlacionó significativamente con la disponibilidad de alimentos, el recurso de la limosna, el trabajo infantil, el tamaño del hogar y la ocupación del jefe de familia (p< 0.000). CONCLUSIÓN: La escala puede considerarse un instrumento confiable para la valoración de la inseguridad alimentaria en los hogares de Antioquia.OBJETIVE: To adapt and validate in households of Antioquia, Colombia, a food security scale previously applied in households of Caracas, Venezuela. MATERIAL AND METHODS: The study was carried out in 44 municipalities in the department of Antioquia, Colombia, in 2003 and 2004, with a randomly selected sample of 1 624 rural and urban households with children under 10 years of age, representative for family units located in the department of Antioquia. The sample was selected using a confidence interval of 95% and an error of 3%. Household food security scale previously used by Paulina Lorenzana in Venezuela were validated for this survey. Internal consistency of the scale was determined using the Spearman correlation coefficient and Cronbach's Alpha coefficient. Construct validity was established through principal components analysis for categorical data. Prinqual procedure and Rasch modeling were used to define the components and items in the scale. RESULTS: Factor analysis showed two components: 1) variables related to 'food insecurity without hunger', which is explained in 95%; 2) variables related to 'food insecurity with hunger', which is explained in 89.4%. Cronbach's Alpha coefficients for 'food insecurity without hunger' and 'food insecurity with hunger' were 0.95 and 0.89, respectively. When analyzed using Rasch modeling, all items showed infit values within a range of 0.8 and 1.2. The scale correlated significantly (p
Date
A point or period of time associated with an event in the lifecycle of the resource
2006
Subject
The topic of the resource
Antioquia, Colombia, food insecurity, inseguridad alimentaria, validación, validation
Source
A related resource from which the described resource is derived
Salud Pública de México
Publisher
An entity responsible for making the resource available
Instituto Nacional de Salud Pública
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Public aspects of medicine
Relation
A related resource
<a href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0036-36342006000600005" target="_blank" rel="noreferrer noopener">http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0036-36342006000600005</a>
-
https://www.socictopen.socict.org/files/original/a1963791ae9ace3654ae571c0aa8aa9e.pdf
c9f19d4893a56c4ede8e783abe85e36a
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
Leaf life spans of some conifers of the temperate forests of South America Longevidad foliar de algunas coníferas de los bosques templados de Sudamérica
Creator
An entity primarily responsible for making the resource
CHRISTOPHER H. LUSK
Description
An account of the resource
Interspecific variation in leaf life span has wide-ranging implications for plant species sorting on resource availability gradients, and for ecosystem processes such as nutrient cycling. Very little is known about leaf life spans of evergreen trees in the temperate forests of South America. Leaf life spans were estimated by static demographic methods, and associated leaf traits measured, for four conifers of this region. It was expected that leaf life span variation would correlate negatively with soil fertility of habitats normally occupied by each species. This prediction was upheld by the data. The mean leaf life span determined for Araucaria araucana (24 years) is among the highest figures reported for any plant species. This extreme leaf longevity was associated with very robust construction (high leaf mass per unit area) and very low nitrogen content. These aspects of the ecology of A. araucana may affect its fitness in two ways. Firstly, slow foliage turnover will reduce its annual nutrient requirements for crown maintenance, a trait that is thought to be crucial for survival on nutrient-poor sites. Secondly, the low decomposability of A. araucana leaf litter is likely to cause nutrient immobilisation, possibly favouring site retention by A. araucana in the face of competition from faster-growing but more nutrient-demanding species. Interspecific variation in leaf life span appeared to be systematically related to variation in leaf mass per unit area (LMA) and leaf nitrogen, in agreement with a large body of evidence that leaf evolution is constrained by a trade-off between trait combinations which optimise carbon gain and growth in resource-rich habitats, and those which favour persistence in chronically adverse environmentsLas diferencias específicas en longevidad foliar tienen importantes implicancias para la distribución de las plantas en relación con gradientes de recursos, y en procesos ecosistémicos tales como el ciclaje de nutrientes. Se conoce muy poco acerca de la longevidad foliar de las especies arbóreas siempreverdes de los bosques templados de Sudamérica. Se estimaron longevidades foliares mediante métodos demográficos 'estáticos' para cuatro especies de coníferas de esta región; además se midieron otros rasgos foliares (masa seca por unidad de area = 'LMA', y contenido de nitrógeno). Se anticipó que las diferencias interespecíficas en longevidad foliar estarían negativamente correlacionadas con la disponibilidad de nutrientes en los hábitats normalmente ocupados por las distintas especies, predicción que fue apoyada por los datos. La longevidad foliar promedio determinada para Araucaria araucana (24 años) se destaca entre las cifras más altas reportadas en la literatura para cualquier especie. Esta extrema longevidad se asocia con una construcción muy robusta (LMA alta), y muy bajo contenido de nitrógeno. Dichos aspectos de la ecología de A. araucana podrían incidir de dos maneras en su adecuación. Primero, el lentísimo recambio de su follaje reduciría sus requerimientos anuales de nutrientes, un rasgo que puede ser clave para su supervivencia en sitios muy infértiles. Segundo, la baja descomposabilidad de su hojarasca daría lugar a una inmovilización de nutrientes, posiblemente permitiendo que A. araucana retenga ciertos sitios, frente la competencia de especies potencialmente más vigorosas pero con mayores requerimientos nutricionales. La variación interespecífica en longevidad foliar parecía presentar relaciones estrechas con variación en LMA y porcentaje de nitrógeno foliar. Dicho resultado es coherente con las evidencias arrojadas por otros estudios, que indican que la evolución de las hojas estaría restringida por un compromiso entre combinaciones de rasgos que optimizan el rendimiento de la planta en hábitats favorables, y aquellas combinaciones que favorecen la persistencia en hábitats adversos
Date
A point or period of time associated with an event in the lifecycle of the resource
2001
Subject
The topic of the resource
Araucaria araucana, Podocarpus, gradientes de recursos, leaf longevity, leaf nitrogen, longevidad foliar, nitrógeno foliar, resource gradients, specific leaf area, área foliar específica
Source
A related resource from which the described resource is derived
Revista Chilena de Historia Natural
Publisher
An entity responsible for making the resource available
BMC
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Botany, Zoology
Relation
A related resource
<a href="http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000300017" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000300017</a>