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DIALNET OAI Articles (538,205 recursos)
Dialnet (Difusión de Alertas en la Red) es una plataforma de recursos y servicios documentales, cuyo objetivo fundamental se centra en mejorar la visibilidad y el acceso a la literatura científica hispana a través de Internet.

Geociencias. Medio ambiente

Mostrando recursos 1 - 20 de 31,287

1. Promoción turística de las comunidades autónomas españolas a través de las redes sociales oficiales - Daries Ramón, Natalia; Cristóbal Fransi, Eduard; Martín Fuentes, Eva
En el presente artículo se pretende realizar una revisión de la literatura de las redes sociales en el ámbito turístico, conocer el nivel de implantación de las redes sociales en las Webs de las oficinas de información turística de las Comunidades Autónomas españolas y analizar las estrategias que llevan a cabo como respuesta al creciente grado de proliferación de dichas redes y a la competitividad a la que se enfrentan los destinos turísticos. El objetivo de este estudio es demostrar la relación y el interés de este tipo de análisis para adaptar la gestión de las redes sociales a las...

2. Recurso cultural, recurso turístico, producto turístico ¿qué creó realmente el plan piloto de dinamización del producto turístico de Xàtiva (Valencia)? - Cañas Martí, Laura; Arnandís Agramunt, Rubén
Los Planes de Dinamización del Producto Turístico (PDPT) marcaron un punto y aparte enla Política Turísticaque desde principios del siglo XXI venía desarrollándose en España (PICTE 2000-2006). Este nuevo instrumento, aprobado en 2004, dejaría de lado la visión de destino turístico, centrada en la mejora de infraestructuras y equipamientos que marcó los planes anteriores, y centraría su atención en la creación de productos turísticos. El éxito de estos planes parece reflejarse en el elevado número de concesiones que por parte dela Secretaría Generalde Turismo obtuvieron muchos municipios españoles, que veían en esta actividad un modo de dinamizar la economía local....

3. La gestión de los destinos turísticos de la Comunitat Valenciana en el entorno de las TIC: implicaciones del destino 2.0 - Giner Sánchez, David; Frau Amat, Sergio
La evolución de Internet y las TIC representa el factor que mayor incidencia ha tenido sobre los cambios experimentados por el turismo en la última década, tanto desde el punto de vista de la oferta como de la demanda. Por una parte, la irrupción y desarrollo de la web 2.0, acompañado de nuevos desarrollos tecnológicos, implica para los destinos turísticos la aparición de un nuevo ecosistema 2.0 en el que la información y el conocimiento representan el principal factor. Y por otra, los nuevos hábitos de consumo de información por parte de la demanda turística han experimentado un cambio radical, aumentando tanto...

4. Afluencia de visitantes en el Parque Regional de Las Salinas y Arenales de San Pedro del Pinatar (Murcia) - Ballesteros Pelegrín, Gustavo
La afluencia de visitantes en el Parque Regional de las Salinas y Arenales de San Pedro del Pinatar ha pasado de cerca de 300.000 personas anuales entre 1999 y 2003, a más de medio millón en 2010. El 90 % se localizan en las playas del Mar Mediterráneo, charca de los baños de lodo y a lo largo del camino de los Molinos de Quintín y Calcetera, por lo que la mayor parte de los visitantes se localizan en el 3,5 % del espacio protegido. La mayor densidad diaria de visitantes se produce entre las 12,00 y las 14,30 horas...

5. Determinantes de la lealtad de empresas turísticas según la heterogeneidad de los segmentos - Moliner Velázquez, Beatriz; Gil Saura, Irene; Ruíz Molina, María Eugenia
Lealtad, satisfacción, valor, compromiso, business-to-business (B2B), agencias de viaje.

6. Restauración de bosque nativo en un área invadida por tamariscos Tamarix ramossisima en el sur de la provincia de Córdoba, Argentina - Natale, Evangelina; Oggero, Antonia; Marini, Daniela; Reinoso, Hermina
Humans produce impacts on ecosystems, where invasive alien species are considered one of the most relevant. In this sense, the restoration ecology, allows repairing ecosystems to be able to persist in future environments. The objective of this work was to design and implement management techniques for recovery environments invaded by saltcedar in the southern of Córdoba. We conducted an experimental restoration trial through saltcedar control (cut-stump method), selection of native species for reforestation and analyze the seed bank of saltcedar and native forest patches. Twelve plots were delimited in a saltcedar´s forest, where four treatments were applied: 1) control, 2)...

7. Tendencias en la investigación sobre ecología y gestión de las especies de Quercus - Marañón Arana, Teodoro; Padilla Díaz, Carmen M.; Pérez-Ramos, Ignacio Manuel; Villar, Rafael
The genus Quercus includes some of the most relevant tree species within the forests of the Northern Hemisphere, because of their wide geographical distribution and also their ecological and economic importance. Some Quercus species have been and still are the central research topic of many scientific studies related with forest ecology and management. The main objectives of this study are: 1) to know the evolution of the number of papers related with Quercus, together with the countries and authors with more scientific production in this field, 2) to identify the main research topics dealing with Quercus in Spain and 3)...

8. Pautas de distribución de encinas y quejigos en un pinar de la Sierra de Cazorla (Jaén) tras 90 años de ordenación foresta - Tíscar Oliver, Pedro Antonio
Data from the successive forest inventories carried out in forests with management plans are valuable to study changes in vegetation and species interactions over the long term. Inventory data from a forest located in southern Spain were used to determine how the history of management and the abiotic environment have contributed to the current distribution of Quercus ilex and Quercus faginea in an area currently dominated by Pinus nigra subsp. salzmannii. Descriptive statistics and repeated measures ANOVA were used to follow the evolution of Quercus stands from 1920 to 2010. The effects of nine abiotic factors on the presence/absence of...

9. Autoecología y distribución potencial de la encina (Quercus ilex subsp. ballota (Desf.) Samp.) en la zona norte de Monegros - Rodríguez-Ochoa, Rafael; Olarieta Alberdi, José Ramón; Chocarro Gómez, Cristina; Martínez, Vicenta; Bilbao, Ignacio
In order to understand the ecology and potential distribution of holm oak (Quercus ilex subsp. Ballota (Desf.) Samp.) in North Monegros we mapped the present distribution of this and associated species. We also studied 37 plots in which Q. ilex is present analyzing the relations between the characteristics of the stands and the plant species recorded and the biophysical variables. On the basis of the soil map of the area, the potential distribution of holm oak in North Monegros was defined as that occupied by soils similar to those described in plots with actual presence of this species. The areas...

10. Variabilidad y respuesta a distintos estreses en poblaciones de encina (Quercus ilex L.) en Andalucía mediante una aproximación proteómica - Jorrín Novo, Jesús V.; Navarro Cerrillo, Rafael María
Abiotic stress conditions imposed by climate change and the progressive increase of insect pests and pathogens in the medium and long term, seriously threat to species and forest ecosystems. Generation of new knowledge to improve the description and documentation of biodiversity and forest genetic resources involve greater integration between molecular biologists and foresters, which ultimately promote the conservation of species and forest communities and the rational development of restoration programs and sustainable management of forest resources. Proteomic studies of Holm oak forest in Andalucia have contributed mainly in four areas of interest: i) describe and catalog Andalusian populations of Holm...

11. Efectos de la gestión selvícola pasada y presente sobre la diversidad genética actual y futura de Quercus pyrenaica Willd. en Sierra Nevada - Valbuena Carabaña, María; Gil, Luis
Quercus pyrenaica Willd. is a Mediterranean and western European oak species widely distributed in the Iberian Peninsula. Its profuse resprouting ability from the entire root system was made use of in traditional management practices, especially as coppices for firewood and charcoal production and less frequently as open woodland for cattle grazing. The abandonment of traditional management evidences the general degradation sate of these woodlands �growing stagnation, stem top drying and lack of seed production�, and causes of such degradation were theoretically attributed to the exhaustion of clonal clumps and to the lack of genetic diversity. Nevertheless, the recent survey by...

12. Rasgos funcionales en el género Quercus: estrategias adquisitivas frente a conservativas en el uso de recursos - García de la Riva , Enrique; Pérez-Ramos, Ignacio Manuel; Navarro Fernández, Cármen; Olmo, Manuel; Marañón Arana, Teodoro; Villar, Rafael
Quercus species constitute one of the most abundant and important group of woody plant species in the Iberian Peninsula, and its geographical distribution is largely determined by water availability, soil type and management history. Understanding the variation of their morpho-functional traits can help us to better understand the degree of diversification of species belonging to the same genus and the mechanisms that control their distribution patterns. The main objectives of this study are: (i) to analyze the relationships between different functional traits in the Quercus genus and test how these functional traits are related with species-specific resource-use strategies; and (ii)...

13. ¿Condiciona la estructura del monte y el crecimiento previo el decaimiento inducido por la sequía en dos especies de Quercus? - Camarero Martínez, Jesús Julio; Vergarechea, Marta; Sangüesa Barreda, Gabriel; Corrià Ainslie, Robin
Extreme events such as severe droughts modify forest dynamics by decreasing growth and the recovery ability. In the Mediterranean Basin, the effects of recent droughts on forests could be also amplified by rising temperatures. In addition, both stresses act on forests modified by humans, where tree size also depends on the historical use. Can the previous growth and tree size determine how trees respond to drought in two coexisting Quercus species (Q. ilex - holm oak, Q. faginea - Portuguese oak)? To answer this question we: (i) quantified the number of stems and size of each individual in a coppice...

14. Crecimiento de plántulas y árboles de seis especies de Quercus - Villar, Rafael; Lopez Iglesias, Bárbara; Ruiz Benito, Paloma; Zavala Gironés, Miguel Angel de; García de la Riva , Enrique
The main objectives of this work were: a) to describe some important features relative to the functional traits of seedlings of species belonging to the genus Quercus, b) to calculate biomass allocation patterns in leaf, stem and root in adults, and c) to calculate the relative growth rates (RGR) of these species for seedlings and adults. To do this, we used data of experiments with seedlings under controlled conditions, the National Forest Inventory (IFN2 and IFN3) and the allometric equations developed by Montero et al. (2005). Quercus species were characterized by large seeds, and the seedlings had a low RGR...

15. Dehesas de encinas. Influencia de la meteorología en la producción de bellotas - Carbonero Muñoz, María Dolores; Fernández Rebollo, Pilar
Acorn production in holm oak (Quercus ilex subsp. ballota (Desf.) Samp.) varies over the years, across areas and even between nearby trees. There are many variables that are involved in these differences, acting in different spatial and temporal levels too. We can identify endogenous and external factors as weather, pests and diseases, management or the habitat. In this work we analyze the influence of meteorology on acorn production and seed weight in an open woodland with high acorn crops. Acorn production was assessed in 50 trees during 2001-2006. The results indicated that weather conditions at early spring and autumn had...

16. Envejecimiento y feminización de la población del aglomerado Gran Paraná: 2001-2010 - Demarchi, Mariela G.; Castelnuovo, Javier
This paper focuses on the study of population ageing and feminization in the Gran Paraná conglomerate based on the information provided by the National Population, Home and Accommodation Census carried out in 2001 and 2010 (INDEC). During this period the Gran Paraná experienced population ageing due to a decline in fertility and an increased participation of people of 65 years of age and over in the population as a whole. Two key issues are highlighted in connection with such population ageing: the importance of relative participation of the extreme elderly (namely, people of over 80 years of age) within the...

17. La enseñanza de las Ciencias Sociales en los profesorados de educación primaria de la provincia de Buenos Aires: La Geografía, gran ausente : Análisis de situación y aporte superador - Blanc, María Inés
Alejandro Kaufman (2008) points out that great changes are taking place from a cultural-historical perspective in the education-society relation and that many of the tensions between these two fields are the result of what he calls cultural "novelties". He claims that education has been grounded on some sort of predictability and on the fact that - since modernity represents progress, which would be related to many of these certainties disappearance or transformation - the school could be enduring certain changes which involve this institution's very foundations. Future teachers' education in the field of Social Sciences needs to be adjusted to...

18. Sistemas de información geográfica aplicados al inventario y gestion de información rural - Iuorno, María Veronica; Gil, Verónica
This paper aims at exploring the advantages to the use of GIS as a small scale inventory and agricultural and livestock information management tool. In this field of study, rural activity planning is usually carried out intuitively, which results in deficient use of information and resources. Geographic Information Systems (GIS) are nowadays a tool which enables easy data storage, access and management. The choice of sample facilities hass been made based on registered information availability as well as on the type of activities developed, which are representative of the activities in the area. The information was inventoried and connected, producing...

19. El contrato territorial en España: Régimen jurídico y grado de implementación - Silvestri, Luciana; Lago Candeira, Alejandro
Land Use Agreements are a recent legal entity aimed at promoting rural sustainable development, through which agricultural and livestock exploitation potential is sought in order to provide certain (non-traditional) social and environmental functions which may further rural sustainable development. Agricultural and livestock exploitation is compensated in exchange of these positive externalities. Land Use Agreements have been born in Spain in the light of two different pragmatic aspects: under EU legislation as well as local regulations issued in connection with it, on the one hand, and, on the other, under strictly national regulations. For the time being, only six autonomous communities...

20. Crítica al enfoque clásico de innovación tecnológica: Estudio de caso del invernáculo en el Cinturón Hortícola Platense - García, Matías
This aim of this work is to critically analyze the classical technology adoption-diffusion approach. In order to do this, a general study of Rogers's technology adoption approach is first performed. A case study is then carried out in which we describe and analyze the onset and expansion of the most important horticultural sector's innovation: the use of greenhouse technology in the area of La Plata. Together with these two sections, we discuss how pertinent this innovation approach is and we show that Rogers's model fails to explain small horticulturists' behavior in the face of this technological landmark. Finally, a novel...

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