Abstract— Between March 1992 and February 1993 five piscivorous fish species, Acestrorhynchus lacustris (Reinhardt, 1874), Hoplias malabaricus (Bloch, 1794), Rhaphiodon vulpinus Agassiz, 1829, Salminus maxillosus, Valenciennes, 1840 and Plagioscion squamosissimus (Heckel, 1840), of the high Paranà River floodplain showed a wide total prey spectrum though only three to four taxa were dominant in their diet. Shrimp, Macrobrachium amazonicum, were also common to the majority of species. Seasonal and spatial variations occurred throughout the study period probably due the availability of prey species. The main resources shared by the predators were also the most abundant in the area, with consumption markedly focused on prey about 5.0 cm long. Detrended correspondence analysis was effective in discriminating two groups of predators species that exploited distinct microhabitats. The predators with the least scores consumed small characids that inhabit mid‐water or the littoral region, whereas those with the largest scores consumed prey associated to the bottom.

The rapid flow fluctuations experienced downstream of hydropeaking facilities can alter the river hydromorphology. Given the dependence of riverine fish on physical habitat, those alterations have the potential to change the physiology and behaviour of fish. We assessed whether artificial velocity refuges mitigated the physiological and behavioural consequences of hydropeaking for the Iberian barbel (Luciobarbus bocagei). Hydropeaking trials were conducted in an indoor flume equipped with deflectors that created low flow velocity areas to serve as refuges. The FLOW‐3D was used to obtain detailed characterizations of the different velocity fields, which facilitated the interpretation of fish responses. Changes in flow magnitude and duration triggered stress responses, demonstrated by the increased blood glucose levels in the single up‐ramping event for 60 L s−1 and in the step up‐ramping event. Fish tended to seek out velocity refuges to avoid higher flow velocities and harsh hydraulic conditions at peak flows, and during the longer events. The movement behaviour frequency increased when fish were subjected to the highest peak flow (60 L s−1), particularly the individual sprints and the drifts. For the base flow (7 L s−1) and the lowest peak flow (20 L s−1) conditions, fish swam freely in the flume, whereas in the harshest hydraulic conditions they showed more difficulty in finding velocity refuges. This research presents a novel approach by combining physiology and behavioural observations with hydraulic modelling to assess the extent to which artificial flow refuges mitigate the consequences of hydropeaking. Our work serves as a model approach for future mitigation studies for fish in hydropeaking rivers.

ABSTRACT. FEEDlNG AND DIEL CYCLE OF FEEDING OF HOPLOSTERNUM LlTTORALE (HANCOCK) (SILURlFORMES, CALLlCHTHYIDAE) IN THE LAGOONS GUARANÁ AND PATOS OF THE UPPER PARANA RIVER, BRAZIL. Hoplosternum tittorale (Hancock, 1828) is an abundant species in the lagoons ofthe upper Parana river floodplain. This species was sampled in Patos and Guarana lagoons in the tlood period (November/92-May/93) and low water period (June-October/93). To analyse food contents in the diet were analysed stomach of91 adults. Twenty seven food items were recorded, amongthem, Testaceae, Nematoda, microcrustaceans, quironomids and organic detritus were predominant. These items allows to characterize the species as bentivore. To study feeding activity were analized 565 adults stomach contents. Food intake was more intense during flooding. Considering diel variation, the species started to eat during dusk, increasing during night, stopping to eat during daytime. KEY WORDS. Siluriforrnes, Callichthyidae, Hoplosternum tittorale, feeding, die1 cycle, lagoons A planície de inundação do alto rio Paraná está inserida no último trecho não represado desse rio em território brasileiro. Esse ambiente, embora sujeito a grandes variações sazonais e espaciais na composição ictiíca, apresenta uma rica assembléia de peixes, com cerca de 170 espécies identificadas (AGOSTINHO & ZALEWSK.I 1996). Entre elas, o tamboatá Hoplosternum littorale (Hancock, 1828), um siluriforme, predominante nas lagoas, que são ambientes rasos e ricos em macrófitas aquáticas. Essa espécie, além de possuir um alto valor comercial em alguns países da América do Sul, apresenta como cacterísticas, fácil reprodução em ambientes confinados e boa tolerância a baixos níveis de oxigênio, o que a torna propícia ao cultivo (LUQUET et aI. 1990).A despeito dos inúmeros estudos sobre a ictiofauna do rio Paraná, não existe registro sobre a biologia do tamboatá. A alimentação e a reprodução dessa espécie

The rapid development and dissemination of information technologies in the last decades has allowed a great expansion in the offer of undergraduate and graduate distance programs. However, this dissemination has been accompanied by high dropout rates, consistently reported in different programs and countries. This is the reality of distance education in Brazil too: a great expansion, including the establishment of Universidade Aberta do Brasil (UAB -Open University of Brazil), but with high failure rates. This study evaluated school dropout and its causes in a graduate certificate program of Programa Nacional de Formação em Administração Pública (PNAP -National Training Program in Public Administration), which aims to train public administrators in the interior of Brazil. High failure rates in these programs have been an obstacle to achieving the objectives of PNAP, because they prevent the training of labor precisely where it is most needed. This article investigates the main factors that lead to this phenomenon, by means of documentary analysis and collection of data on students from Universidade Federal da Grande Dourados, in Mato Grosso do Sul state, Brazil, via survey. After the collection, conducted through questionnaires and interviews, we did a statistical analysis of the data, which revealed a graduate student profile consistent with that reported in the literature and conducive to school dropout. It is verified that, given this student profile, some administrative strategies are necessary to prevent dropout rates from being so high. Such strategies are notoriously not enough to reduce dropout rates to acceptable levels; on the other hand, not developing strategies ensures dropout rates will not decrease.

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O objetivo deste estudo é identificar as práticas desenvolvidas pelas Universidades Federais Brasileiras (UF's) relacionadas ao conteúdo mínimo de Divulgação, Conscientização e Capacitação (DCC), de seus Planos de Gestão de Logística Sustentável (PLS) e seus respectivos indicadores. A norma que trata do PLS exige a incorporação de quatro conteúdos mínimos, quais sejam: atualização do inventário que tenham um menor impacto ambiental para substituição; práticas de sustentabilidade e racionalização do uso de materiais e serviços; responsabilidades, metodologia de implementação e avaliação do plano e, por fim, as ações de DCC. Contudo, neste estudo, são tratadas apenas as ações de DCC. A fim de alcançar o objetivo proposto, foi desenvolvida uma pesquisa qualitativa, com base em estudos bibliográficos e documentais. Os resultados demonstram que, possivelmente, por questões culturais, a maioria dos gestores públicos brasileiros dos PLS das UF`s possui dificuldades em implantar o Plano e publicar seus Relatórios de Acompanhamento. Ficou evidente o desconhecimento sobre a importância de indicadores, como instrumento de monitoramento.

No abstract

Considerando-se a visível expansão das atividades do setor da construção civil, e a crescente geração de resíduos de construção e demolição (RCD), em todas as regiões do Brasil, procurou-se verificar se os municípios localizados no Estado do Rio Grande do Sul, Brasil, estão em conformidade com as legislações que tratam sobre o estabelecimento de diretrizes, critérios e procedimentos para a gestão dos RCD, disciplinando as ações necessárias a serem adotadas pelas empresas deste setor. Para o desenvolvimento do trabalho foi realizada uma pesquisa exploratória, por meio de pesquisa na Internet, nos Portais das Prefeituras que possuem empresas do setor da construção civil com atividades em operação em suas cidades. Os principais resultados mostram que a ausência de participação na pesquisa, por parte de muitas Prefeituras, indica que elas, ou estão se ajustando, ou ainda não