Los Volcanes en la red (www): la enciclopedia del siglo XXI

No toda la información encontrada en Internet resulta ser fiable y válida, de modo que es necesaria una evaluación crítica sobre los distintos materiales antes de escoger los más apropiados. En este artículo se presentan y analizan distintos recursos educativos de internet relacionados con el fenómeno del volcanismo y peligros asociados. Todos ellos pueden ser de gran utilidad para docentes, divulgadores científicos y alumnos tanto para mejorar su formación en estos temas, como para complementar su propio material docente o de divulgación

Impacts of Use and Abuse of Nature in Catalonia with Proposals for Sustainable Management

This paper provides an overview of the last 40 years of use, and in many cases abuse, of the natural resources in Catalonia, a country that is representative of European countries in general, and especially those in the Mediterranean region. It analyses the use of natural resources made by mining, agriculture, livestock, logging, fishing, nature tourism, and energy production and consumption. This use results in an ecological footprint, i.e., the productive land and sea surface required to generate the consumed resources and absorb the resulting waste, which is about seven times the amount available, a very high number but very similar to other European countries. This overexploitation of natural resources has a huge impact on land and its different forms of cover, air, and water. For the last 25 years, forests and urban areas have each gained almost 3% more of the territory at the expense of agricultural land; those municipalities bordering the sea have increased their number of inhabitants and activity, and although they only occupy 6.7% of the total surface area, they account for 43.3% of the population; air quality has stabilized since the turn of the century, and there has been some improvement in the state of aquatic ecosystems, but still only 36% are in good condition, while the remainder have suffered morphological changes and different forms of nonpoint source pollution; meanwhile the biodiversity of flora and fauna remains still under threat. Environmental policies do not go far enough so there is a need for revision of the legislation related to environmental impact and the protection of natural areas, flora, and fauna. The promotion of environmental research must be accompanied by environmental education to foster a society which is Land 2021, 10, 144 3 of 53 more knowledgeable, has more control and influence over the decisions that deeply affect it. Indeed, nature conservation goes hand in hand with other social and economic challenges that require a more sustainable vision. Today’s problems with nature derive from the current economic model, which is environmentally unsustainable in that it does not take into account environmental impacts. Lastly, we propose a series of reasonable and feasible priority measures and actions related to each use made of the country’s natural resources, to the impacts they have had, and to their management, in the hope that these can contribute to improving the conservation and management of the environment and biodiversity and move towards sustainability.info:eu-repo/semantics/publishedVersio

Los Volcanes en la red (www): la enciclopedia del siglo XXI

No toda la información encontrada en Internet resulta ser fiable y válida, de modo que es necesaria una evaluación crítica sobre los distintos materiales antes de escoger los más apropiados. En este artículo se presentan y analizan distintos recursos educativos de internet relacionados con el fenómeno del volcanismo y peligros asociados. Todos ellos pueden ser de gran utilidad para docentes, divulgadores científicos y alumnos tanto para mejorar su formación en estos temas, como para complementar su propio material docente o de divulgación

Producciones metalúrgicas en el nordeste de la Península Ibérica durante el III milenio a C : el taller de la Bauma del Serrat del Pont (Tortellà, Girona)

Se presentan los resultados de la excavación en los niveles del III milenio cal. AC del pequeño abrigo rocoso de la Bauma del Serrat del Pont. El yacimiento fue ocupado por un grupo pequeño que organizó el espacio interno con una estructura de material perecedero, excepto en el nivel II.5. Algunos datos indican que las ocupaciones pudieron tener un carácter estacional. Los estudios multidisciplinares reconstruyen un aprovechamiento diversificado de recursos locales, entre los que se integran los dedicados a las tareas metalúrgicas. Se documentan aleaciones intencionadas de bronce de gran antigüedad, el empleo de vasijas horno con o sin decoración campaniforme, y toberas de arcillaWe examine the third millennium cal. BC levels from the small rockshelter of Bauma del Serrât del Pont. The site was settled by a small group, building a perishable structure except in the II. 5 level. Some evidence suggests a seasonal occupation of the site. Multidisciplinary research shows a broad spectrum of local resources involved in the dairy life of this people, including those related to metallurgical activity. We find very old tin alloys, plain or bell beaker decorated pot-furnaces (used to smelt copper ores) and clay tuyere

Ús i abús de la natura, impactes i propostes de gestió. El cas de Catalunya com a paradigma

78 pages, 10 figures, 20 tablesFem aquí un balanç dels darrers quaranta anys d'ús, en molts casos abús, dels recursos naturals a Catalunya, un país representatiu dels països europeus, en especial dels mediterranis. [...]Peer reviewe