Mirmecofauna em um fragmento de floresta atlântica urbana no município de Marília, Brasil

The aim of this study was to verify the influence of the habitat fragmentation on the Ant Fauna in an urban fragment of Semideciduous Seasonal Atlantic Forest located in the municipality of Marilia, São Paulo, Brazil. The studied fragment was divided into three environments in relation to edge: "Edge" (2m), "Transition" (30m) and "Interior" (90m). By using pitfalls traps and attractive baits there were done nine samples between November 2007 and February 2008. There were collected 3.873 individuals distributed into five subfamilies, 19 genera and 33 species. Five species were abundant on three studied environments: Ectatomma sp1, Mycocepurus goeldii, Paratrechina sp1, Pheidole sp2, Trachymyrmex sp1, Wasmannia auropunctata. The edge and transition environments presented the lower Simpsons diversity index and higher species dominance. However, it was observed little variation between these parameters between environments. Faunistic similarity between environments, expressed by Jaccard's similarity index showed high similarity between all studied environments. Because the studied site is an urban fragment, the similarity found between these areas can be related to habitat fragmentation process, an historical of constant anthropic perturbation and low local colonization rates. However, we suggest that a posteriori evaluation should be done with other arthropods groups like spiders and beetles in due to understand the changes that occur in urban fragments and support the choice of conservation and management actions in favor of this important forest remnant localized in urban area of Marilia, São Paulo, Brazil.

Para onde caminha a ciência politica?

The purpose of this paper is to analyze the challenges to Political Sciences at the moment when many authors emphasize the usage of democratic paradigm as the only way to the rational building of speech in pluralist societies. At the end of one century of the consolidation of modern liberal thought, both in right and left versions (Wallerstein, 1995), the democracy as research tradition(Ball, 1987) fades away its ethical meaning, based upon equality and freedom, and lacks room for discussions about rules for implementing it. The analytical method seeks to historically rebuild the different levels of modern state-nation upbringing and the consolidation of competitive party democracy in the 20th century, which is the explanation key for the political organizational phenomenon of globalized societies. The result of this analysis opens new perspectives to Political Sciences advance in discussing the nature of democratic paradigm since it needs to face challenges to survive, such as: the fight against the structural violence of our society; the fight against despotism; and the adjustment to the meaning of the word freedom. The facing of the mentioned challenges may open explanation keys that will lead to a change in Political Sciences ways.

Le sfide della politica energetica in America Latina e nei Caraibi : ridurre i divari produttivi e sociali

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Nuevas formas de participacion politica: las mujeres en el Brasil

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Análise geoambiental da região de marília, SP: Suscetibilidade a processos erosivos frente ao histórico de ocupação da área

The study area comprises the western portion of the Marília Plateau, State of São Paulo, southeastern Brazil. The geological substrate encompasses Cretaceous sedimentary rocks of the Bauru Group and local Neocenozoic units like colluvium aprons, fluvial terrace deposits, in situ regoliths, and modern alluvial deposits. In a geomorphologic sense, the study area might be characterized as showing two main pediplanes, viz. P1 Surface (upper) and P2 Surface (lower), both surfaces are presently under dissecation processes. After the 1920's the expansion of the railroad system fostered the removal of the natural vegetation, which in turn was followed by the introduction of coffee, peanut, corn and cotton crops. This intense exploitation was conducted without respect to the soil carrying capacity and its natural susceptibility to erosional processes, including an aggressive form known as voçoroca. As a result, the study shows that the most susceptible material includes colluvium aprons, in situ regoliths, and colluvium-alluvium or alluvium deposits. The most critical situation is in the P2 Surface context, near the bottom of the Marília Plateau scarpment, where surface runoff can be very strong. Another point of active erosion is represented by the exposed walls of gullies and voçorocas, mainly in fluvial reaches subjected to talweg lowering. In a general sense, this study shows current evidence of erosional stability due to the ìntroduction of pastures as a predominant type of land occupation and to a series of erosion control procedures. Among these actions are terrace implantation, construction of small pits for runoff control, natural or induced reforestation by land owners. Despite these efforts, some erosion points remain chiefly in steeper country roads and trail stretches, in areas of concentration of cattle tracks (e.g., near cattle ponds), gullies or voçorocas exposed walls, and badly planned urbanization. The permanence of these erosion points demonstrates the necessity of a continuous monitoring of surface dynamics as well as a rapid and effective intervining measures of erosion and/or silting control.

Politica migratoria argentina: lineamientos y procesos de implementación

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Sobre la politica demografica de algunos paises socialistas de Europa

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Medios juridicos para la configuracion de una politica de poblacion en el estado socialista

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Indagacion en la estructura de poder y la politica de poblacion

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Migracoes internas no Brasil: reflexoes sobre a correpondencia entre problema, pesquisa e politica

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Teoria socio-economica y politica de poblacion

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Pobreza extrema y gasto social: definiciones y opciones de politica economica

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Politica social y pobreza en el regimen neoliberal

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Programas sociales solidarios y de educacion popular: una politica emergente

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