El paisaje como una de las categorías de importancia en geografía, se sitúa en el plano de contacto entre los hechos naturales y humanos, además, es un producto ecológico, psicológico y social. El estudio del mismo permite incorporar la visión holística, dialéctica y sistémica, propios de la geografía, siendo una vía para la formulación de instrumentos y políticas ambientales en la gestión y planificación de cuencas hidrográficas. En esta perspectiva, se presenta la metodología para identificar la percepción del paisaje de distintos actores sociales, importantes en la gestión y uso del agua en la cuenca del río Dagua, localizada al occidente del departamento del Valle del Cauca, Colombia, articulando para ello métodos de investigación cualitativos y cuantitativos. Los resultados sirven de base para la creación de instrumentos científicos frente a la gestión del agua y los ecosistemas en los procesos de gobernanza de comunidades presentes en la cuenca.
The Drake Passage is an oceanic gateway of about 850 km width located between South America and the Antarctic Peninsula that connects the southeastern Pacific Ocean with the southwestern Atlantic Ocean. It is an important gateway for mantle flow, oceanographic water masses, and migrations of biota. This sector developed within the framework of the geodynamic evolution of the Scotia Arc, including continental fragmentation processes and oceanic crust creation, since the oblique divergence of the South American plate to the north and the Antarctic plate to the south started in the Eocene. As a consequence of its complex tectonic evolution and subsequent submarine processes, as sedimentary infill and erosion mainly controlled by bottom currents and active tectonics, this region shows a varied physiography. We present a detailed map of the bathymetry and geological setting of the Drake Passage that is mainly founded on a new compilation of precise multibeam bathymetric data obtained on 120 cruises between 1992 and 2015, resulting in a new Digital Bathymetric Model with 200 × 200 m cell spacing. The map covers an area of 1,465,000 km 2 between parallels 52°S and 63°S and meridians 70°W and 50°W at scale 1:1,600,000 allowing the identification of the main seafloor features. In addition, the map includes useful geological information related to magnetism, seismicity and tectonics. This work constitutes an international cooperative effort and is part of the International Bathymetric Chart of the Southern Ocean project, under the Scientific Committee on Antarctic Research umbrella.
Byers Peninsula, Livingston Island, was one of the first sites in Antarctica designated for environmental conservation and scientific protection. Research on Byers Peninsula has been predominantly international, with 88 indexed publications (93% of them published during last 20 years) from 209 authors affiliated to 110 institutions from 22 nations, all of which are signatories to the Antarctic Treaty. Palaeontological research represented 20% of the published articles. The variety of freshwater bodies within the area has made Byers Peninsula a reference site for limnological studies (24% of papers). The site also contains numerous outcrops and periglacial features relevant to geology, stratigraphy and geomorphology (29%). Terrestrial biodiversity is extraordinarily high for lichens, bryophytes and invertebrates (15% of articles). Only 5% of the publications concern research on human activities, including both archaeology and impact monitoring. Glaciology, meteorology and climatology studies represent only 7% of papers. This work highlights the international and multidisciplinary nature of science conducted on Byers Peninsula in order to promote international cooperation and to provide information relevant for environmental management and conservation.
Se busca reflexionar acerca de cuáles son los posibles aportes que la ciencia geográfica le da a un individuo como profesional y como persona para que el, en cualquiera de las dos condiciones, sea un mejor humano y participe de la constitución de una sociedad más justa y equitativa. Para ello, el articulo trata tres aspectos importantes que en su conjunto, y desde el punto de vista del autor, deben ser fundamentales en la educación geográfica y cuáles son los valores que esta ciencia le pueden aportar a un ciudadano para que sea y viva mejor; el segundo aspecto, y que se deriva del mismo concepto de educación geográfica, hace referencia al contexto social de la formación; y por último, se hace una reflexión acerca del papel de la educación científica en la sociedad, como posible punto de referencia para que una persona en formación del geógrafo inicie la exploración de este mundo, encuentre sus propias verdades con autonomía y riguridad y cuenten con aptitudes para dinamizar los cambios que se necesiten en ella.
In contrast with international food assistance programs, or with the new green revolution based on the sustainable intensification of agriculture, this work proposes an agroecological technology to overcome food insecurity problems in countries like Nicaragua, most especially in rural areas. In particular, it analyzes the effects of implementing the biointensive method—an agroecological food production initiative that is highly labor-intensive, but requires little land—in various communities of the Dry Corridor in Nicaragua. This project is the result of establishing an international consortium for development cooperation where grassroots communities played a prominent role. The main results are an improvement in local food security and a strengthening of the communities’ capacity to face major challenges arising from poverty and climate change, the effects of which are increasingly noticeable in Central America. The main weakness identified is that the necessary tropicalization of the method has not been sufficiently tested, for a two-year period is too short a time to transform the prevailing rural development dynamics significantly.
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