894 resultados para El Nino Current - Environmental aspects


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Vocational guidance (V.G.) is currently facing both theoretical and methodological reconsiderations. This demands rethinking ethical and scientific assumptions, counselors' role and training. V.G. provides a space to receive information about oneself as well as about labor world and for the elaboration of projects for the future. Many guidance situations in teenagers and young adults are described in this paper, highlighting the main current emergent aspects. There was a remarkable protagonism of those seeking guidance and the reflective frame of the guidance. This frame prepares for the educational stage changes and also for occupational insertion working on aspects that widen autonomous choice and the development of social abilities and attitudes to carry out the vocational project and the development in work. Troubled sociocultural and economic transformations demand an on-going training on the part of counselors. To that end, possible fields of concern and subjects to be worked in said training are suggested.

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Vocational guidance (V.G.) is currently facing both theoretical and methodological reconsiderations. This demands rethinking ethical and scientific assumptions, counselors' role and training. V.G. provides a space to receive information about oneself as well as about labor world and for the elaboration of projects for the future. Many guidance situations in teenagers and young adults are described in this paper, highlighting the main current emergent aspects. There was a remarkable protagonism of those seeking guidance and the reflective frame of the guidance. This frame prepares for the educational stage changes and also for occupational insertion working on aspects that widen autonomous choice and the development of social abilities and attitudes to carry out the vocational project and the development in work. Troubled sociocultural and economic transformations demand an on-going training on the part of counselors. To that end, possible fields of concern and subjects to be worked in said training are suggested.

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Planned to be a process of early evaluation of Politics, Plans and Programs (PPPs), which interfere in the environment; the Strategic Environmental Assessment (SEA) suggests a methodology for planning and managing the land, which overcomes the limitations of the traditional plans that try to mitigate the environmental impacts of Projects, assuming a pro-active conception that incorporates the social and environmental aspects in the planning stage of the PPPs. This kind of Evaluation surpasses the existing limitations of the Environmental Impact Assessment (EIA), once the EIA happens after the planning process, when lots of decisions have been made and carried out. In order to overcome the limitations of EIA, the SEA is a strategic tool in the process of planning and managing the land. When we focus on the PPPs and not on the Projects, the SEA, which is more political than technical, priorizes the strategies that assure the integration of the environmental, social, economic and institutional aspects into the planning process, in private or public organizations. In this context, this work aims to establish the concept basis of the Strategic Environmental Evaluation as a tool for land planning and managing. The methodology procedures used here lie in the literature review concerning the SEA, analyzing how this tool can be introduced as an alternative for sustainable development. Although the SEA is a tool that introduces the sustainable development theme as a guiding principle of planning, it is seldom used by managers and decision makers, locally and nationally

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Led to become a national productive Center, the Great Dourados Region, which consists of 40 cities located in the south of the state of Mato Grosso do Sul - Brazil, emerged as a grain productive region from the middle of the 1970s in the 20th century to the beginning of the 21st century. Using modern agricultural techniques, the land organization in this region was ruled by a development policy which was not concerned with the socio environmental aspects of the area. In this context, the present work aims to analyze the development process of the Great Dourados region, through soybean production and its relation to the confinement of the indigenous people present in the Area. This integration happened due to the money and for it, inserting this Region into a national productive pattern which guided the farmers to modern crops, mainly soybean. The land cultivation was not the only productive activity that granted the Region an economic integration, to both the national and international market. From the end of the Paraguay War (1870) to the middle of the 70s, there were at least two other ways to the regional economic integration. One of them happened with the traditional activities of cattle raising and the extraction of the Paraguay tea (maté/ Yerba Mate) from 1870 to 1937, which divided the regional territory into large farmlands focused on the external market. The other way happened with the need to create a market for the agricultural production and for the demand for manufactured goods, which reorganized the regional territory into small farmlands, as a result of colonization projects from 1943 to 1956. Since 1976, with the creation of the Special Program for the Development of the Great Dourados Region (Prodegran), the capitalist relations of production, which were consolidated in the area, were not ruled almost exclusively by the traditional activities of cattle raising and the extraction of the Paraguay tea, in order to create a new accumulation center connected to the modern crops. As this new accumulation center was created, the Region was led to a selective and dependent integration process, in which many farmers changed their accumulation centers to modern grain crops, causing environmental degradation, productive exclusion and ethnical-cultural conflicts with the indigenous community

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Led to become a national productive Center, the Great Dourados Region, which consists of 40 cities located in the south of the state of Mato Grosso do Sul - Brazil, emerged as a grain productive region from the middle of the 1970s in the 20th century to the beginning of the 21st century. Using modern agricultural techniques, the land organization in this region was ruled by a development policy which was not concerned with the socio environmental aspects of the area. In this context, the present work aims to analyze the development process of the Great Dourados region, through soybean production and its relation to the confinement of the indigenous people present in the Area. This integration happened due to the money and for it, inserting this Region into a national productive pattern which guided the farmers to modern crops, mainly soybean. The land cultivation was not the only productive activity that granted the Region an economic integration, to both the national and international market. From the end of the Paraguay War (1870) to the middle of the 70s, there were at least two other ways to the regional economic integration. One of them happened with the traditional activities of cattle raising and the extraction of the Paraguay tea (maté/ Yerba Mate) from 1870 to 1937, which divided the regional territory into large farmlands focused on the external market. The other way happened with the need to create a market for the agricultural production and for the demand for manufactured goods, which reorganized the regional territory into small farmlands, as a result of colonization projects from 1943 to 1956. Since 1976, with the creation of the Special Program for the Development of the Great Dourados Region (Prodegran), the capitalist relations of production, which were consolidated in the area, were not ruled almost exclusively by the traditional activities of cattle raising and the extraction of the Paraguay tea, in order to create a new accumulation center connected to the modern crops. As this new accumulation center was created, the Region was led to a selective and dependent integration process, in which many farmers changed their accumulation centers to modern grain crops, causing environmental degradation, productive exclusion and ethnical-cultural conflicts with the indigenous community

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Vocational guidance (V.G.) is currently facing both theoretical and methodological reconsiderations. This demands rethinking ethical and scientific assumptions, counselors' role and training. V.G. provides a space to receive information about oneself as well as about labor world and for the elaboration of projects for the future. Many guidance situations in teenagers and young adults are described in this paper, highlighting the main current emergent aspects. There was a remarkable protagonism of those seeking guidance and the reflective frame of the guidance. This frame prepares for the educational stage changes and also for occupational insertion working on aspects that widen autonomous choice and the development of social abilities and attitudes to carry out the vocational project and the development in work. Troubled sociocultural and economic transformations demand an on-going training on the part of counselors. To that end, possible fields of concern and subjects to be worked in said training are suggested.

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Planned to be a process of early evaluation of Politics, Plans and Programs (PPPs), which interfere in the environment; the Strategic Environmental Assessment (SEA) suggests a methodology for planning and managing the land, which overcomes the limitations of the traditional plans that try to mitigate the environmental impacts of Projects, assuming a pro-active conception that incorporates the social and environmental aspects in the planning stage of the PPPs. This kind of Evaluation surpasses the existing limitations of the Environmental Impact Assessment (EIA), once the EIA happens after the planning process, when lots of decisions have been made and carried out. In order to overcome the limitations of EIA, the SEA is a strategic tool in the process of planning and managing the land. When we focus on the PPPs and not on the Projects, the SEA, which is more political than technical, priorizes the strategies that assure the integration of the environmental, social, economic and institutional aspects into the planning process, in private or public organizations. In this context, this work aims to establish the concept basis of the Strategic Environmental Evaluation as a tool for land planning and managing. The methodology procedures used here lie in the literature review concerning the SEA, analyzing how this tool can be introduced as an alternative for sustainable development. Although the SEA is a tool that introduces the sustainable development theme as a guiding principle of planning, it is seldom used by managers and decision makers, locally and nationally

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Deep Sea Drilling Project Site 480 (27°54.10'N, 111°39.34'W; 655 m water depth) contains a high resolution record of paleoceanographic change of the past 15000 years for the Guaymas Basin, a region of very high diatom productivity within the central Gulf of California. Analyses of diatoms and silicoflagellates were completed on samples spaced every 40-50 yr, whereas ICP-AES geochemical analyses were completed on alternate samples (sample spacing 80-100 yr). The Bolling-Allerod interval (14.6-12.9 ka) (note, ka refers to 1000 calendar years BP throughout this report) is characterized by an increase in biogenic silica and a decline in calcium carbonate relative to surrounding intervals, suggesting conditions somewhat similar to those of today. The Younger Dryas event (12.9-11.6 ka) is marked by a major drop in biogenic silica and an increase in calcium carbonate. Increasing relative percentage contributions of Azpeitia nodulifera and Dictyocha perlaevis (a tropical diatom and silicoflagellate, respectively) and reduced numbers of the silicoflagellate Octactis pulchra are supportive of reduced upwelling of nutrient-rich waters. Between 10.6 and 10.0 ka, calcium carbonate and A. nodulifera abruptly decline at DSDP 480, while Roperia tesselata, a diatom indicative of winter upwelling in the modern-day Gulf, increases sharply in numbers. A nearly coincident increase in the silicoflagellate Dictyocha stapedia suggests that waters above DSDP 480 were more similar to the cooler and slightly more saline waters of the northern Gulf during much of the early and middle parts of the Holocene (~10 to 3.2 ka). At about 6.2 ka a stepwise increase in biogenic silica and the reappearance of the tropical diatom A. nodulifera marks a major change in oceanographic conditions in the Gulf. A winter shift to more northwesterly winds may have occurred at this time along with the onset of periodic northward excursions (El Nino-driven?) of the North Equatorial Countercurrent during the summer. Beginning between 2.8 and 2.4 ka, the amplitude of biogenic silica and wt% Fe, Al, and Ti (proxies of terrigenous input) increase, possibly reflecting intensification of ENSO cycles and the establishment of modern oceanographic conditions in the Gulf. Increased numbers of O. pulchra after 2.8 ka suggest enhanced spring upwelling.

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We present a 3000-yr rainfall reconstruction from the Galápagos Islands that is based on paired biomarker records from the sediment of El Junco Lake. Located in the eastern equatorial Pacific, the climate of the Galápagos Islands is governed by movements of the Intertropical Convergence Zone (ITCZ) and the El Niño-Southern Oscillation (ENSO). We use a novel method for reconstructing past ENSO- and ITCZ-related rainfall changes through analysis of molecular and isotopic biomarker records representing several types of plants and algae that grow under differing climatic conditions. We propose that ?D values of dinosterol, a sterol produced by dinoflagellates, record changes in mean rainfall in El Junco Lake, while dD values of C34 botryococcene, a hydrocarbon unique to the green alga Botryococcus braunii, record changes in rainfall associated with moderate-to-strong El Niño events. We use these proxies to infer changes in mean rainfall and El Niño-related rainfall over the past 3000 yr. During periods in which the inferred change in El Niño-related rainfall opposed the change in mean rainfall, we infer changes in the amount of ITCZ-related rainfall. Simulations with an idealized isotope hydrology model of El Junco Lake help illustrate the interpretation of these proxy reconstructions. Opposing changes in El Niño- and ITCZ-related rainfall appear to account for several of the largest inferred hydrologic changes in El Junco Lake. We propose that these reconstructions can be used to infer changes in frequency and/or intensity of El Niño events and changes in the position of the ITCZ in the eastern equatorial Pacific over the past 3000 yr. Comparison with El Junco Lake sediment grain size records indicates general agreement of inferred rainfall changes over the late Holocene.

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