During three consecutive years, monthly samples of zooplankton were taken in the lacustrine (dam) zone of Jurumirim (São Paulo, Brazil). The seasonal effect on basic limnological features (thermal regime, oxygen distribution, phytoplankton biomass, etc.) was also examined. The influence of the seasonality on the fluctuation of the zooplankton composition and abundance was not clearly detected (low degree of recurrent patterns). Rotifers (32 taxa) were the most abundant organisms during almost the entire study period with some seasonal alternations in the maximum abundance peaks of the main taxa (Conochilus unicornis, Keratella americana, K. cochlearis and Hexarthra spp.), except for Polyarthra (mainly P. vulgaris). Only occasionally copepods were numerically dominant. Higher copepod abundance was positively associated to periods of increase in the water retention time. Among the Copepoda (10 taxa) the calanoids (mainly Notodiaptomus iheringi) were more abundant, especially in warmer periods. Conversely, cyclopoids had higher abundance in autumn and winter. The species Thermocyclops minutus and T. decipiens co-occurred, but the first attained higher abundance. Some evidence of co-existence strategies between both species are considered. Cladocera (17 taxa) was never numerically dominant and the main taxa (Bosmina spp., Ceriodaphnia spp. and Diaphanosoma spp.) occurred almost the whole study period and did not present a seasonal pattern of fluctuation. Diaphanosoma (mainly D. birgei) attained the highest abundance among cladocerans. Most organisms were always found at the surface, but they also occupy the whole water column, even in periods of stratified conditions and low oxygen concentration in the bottom layers. Among the main zooplanktonic taxa, only Hexarthra avoids deep layers. An exceptionally high concentration of Copepoda nauplii on the surface was influenced by low transparency, high concentration of phytoplankton at this layer and low oxygen concentration at the bottom. In periods of higher retention timevariability there was a more heterogeneous distribution of the zooplankton in the water column. The increase in the retention time seems also to favor the copepod development. Finally, some inter-decade changes are considered on the basis of zooplankton assemblage structure observations. Keywords

The aim of this work was to perform a comparative analysis of four lateral lagoons and of the main channel of the Rosana Reservoir (Paranapanema river), southeast Brazil. The fieldwork was conducted during dry and rainy periods of 2004 and 2005. The analyzed variables were chlorophyll a, turbidity, total phosphorus, total nitrogen, dissolved nutrients (ammonium, nitrate, nitrite, phosphate and silicate), Secchi disk transparency, suspended solids, temperature, pH, dissolved oxygen and electrical conductivity. Intense summer rainfall provided a high input of allochthonous material into the system, resulting in conspicuous changes-high turbidity and nutrient concentrations and low transparency, especially in the reservoir channel. The cluster analysis showed a clear segregation between the reservoir sampling site and the lagoons. The results evidenced the strong influence of regional factors on the limnological structure and functioning of these environments. The alternation between dry and rainy periods changes significantly the characteristics of the main channel and lagoons, mainly due to the contribution of tributaries. Spatially, the system exhibited a remarkable limnological variability. This shows the need to consider these distinct habitats in regional conservation strategy, presently focused on terrestrial habitats.

AIM: This study aimed to evaluate, comparatively, the influence of distinct environmental impacts in the watershed on the rivers Capivara, Lavapés, Araquá and Pardo and the transference of effects downstream. METHODS: The limnological/water quality study was carried out in rainy (March/2007) and dry (September/2007) seasons, considering 17 sampling stations. RESULTS: Variables such as channel width and depth, water velocity and temperature increased towards the river's mouth; water transparency, velocity and dissolved oxygen were higher in the upstream regions. Light penetration was total at most sampling stations and pH was predominantly acid. The sampling stations impacted by pollution sources, Lavapés and Araquá Rivers, exhibited higher values of electric conductivity, suspended solids, total nitrogen, nitrate, nitrite, ammonium, total dissolved phosphorus, BOD, and thermotolerant coliforms. Higher values of electric conductivity, turbidity and suspended solids were observed in the rainy season, whereas higher chlorophyll concentrations occurred in the dry season. The Lavapés River exhibits the worst environmental condition, while Capivara River is under better state of conservation. This study shows that it is urgent the implementation of measures for preservation and restoration of these regional aquatic ecosystems. All studied rivers were influenced by seasonal variation, sewage discharges and by watershed use and occupation. The TSI is a good analysis tool. The studied rivers export organic matter and TN, TP and SS loads to Tietê and Paranapanema rivers. CONCLUSIONS: This study show the importance of river management and that the accelerated degradation of the river systems indicates the little progress of the Brazilian legislation in terms of preservation and good management practices and that the interface between science, law, management and conservation need to be improved.

ResumoA extensão universitária desempenha um papel fundamental na formação cidadã dos alunos. Com isso, o Projeto Rondon que visa à integração social aliada ao voluntariado dos estudantes universitários, aborda em suas operações o tema de Saúde e Higiene Bucal. O objetivo deste trabalho foi de conscientizar sobre as práticas da higiene bucal e prevenção de doenças bucais e sistêmicas, incentivar a higiene pessoal dos alunos e ensinar a técnica correta de escovação dentária. As oficinas de higiene bucal ocorreram no ano de 2015, nos meses de janeiro e abril, no município de Itatuba-PB, na Operação Porta do Sol do Projeto Rondon e em São Paulo-SP, na E.E. Júlio de Mesquita Filho. A oficina consistiu de aula expositiva sobre higienização bucal, diálogo sobre a importância de uma boa escovação, seguida de dinâmica em que foi utilizado um modelo de escova de dente e boca de tamanhos ampliados. Em Itatuba-PB 125 pessoas participaram da oficina, e foram entregues 500 escovas de dente no período da operação. Já em São Paulo-SP cerca de 580 alunos participaram da ação e foram entregues mais de 500 escovas de dente. A distribuição de escovas de dente contribui para bons hábitos de higiene e ajuda a diminuir a influência das condições socioeconômicas. O estudante universitário atua como multiplicador de informações que são extremamente importantes e que contribuem para o bem-estar do público-alvo, ações preconizadas pelo Projeto Rondon e que atendem ao papel que a extensão universitária exerce dentro da comunidade. Palavras-chave: Higiene Bucal. Projeto Rondon. Extensão BUCCAL HEALTH LECTURE APPLIED IN THE PORTA DO SOL OPERATION, ITATUBA-PB AND IN THE STATE SCHOOL JÚLIO DE MESQUITA FILHO, SÃO PAULO-SP AbstractThe University extension plays a fundamental roll in students citizen formation. The Rondon Project seeks social integration allied to university students volunteer work approaching in every operation the themes Health and Oral Health. The objective of the work developed was to raise the awareness to oral health and the prevention from oral and systemic diseases, to encourage the personal hygiene and to teach the correct dental brushing technique. The workshops of oral health occurred in January and April, 2015 and they took place in Itatuba-PB, in the "Operação Portal do Sol" of the Rondon Project and in São Paulo-SP, on the S.S. Júlio de Mesquita Filho. The workshop provided expository lesson about oral health, a dialogue about the importance of dental brushing, followed by a dynamic where enlarged mouth and toothbrush were used. In Itatuba-PB 125 persons participated in the workshop and 500 toothbrushes were distributed along the operation period. In São Paulo-SP around 580 students participated of the proposed action and more than 500 toothbrushes were handed to them. The distribution of the toothbrushes contributes to the good hygiene habits and helps to decrease the influence of socioeconomic conditions. The university student acts as a multiplier of extremely important information that contributes to the wellbe...

ResumoIdentificar estratégias de ensino para as atividades educativas do Rondon. Estudo de revisão integrativa, realizado no período de junho de 2015, seguindo rigorosamente as fases que compõem o método, apresentando uma amostra de 11 publicações. Foram identificados dois principais grupos por semelhança: 1. grupo de conversa, discussão em grupo e trabalho grupal e 2. As atividades lúdicas: ferramentas vivenciais e brincadeiras. Os autores concluem que estas estratégias foram utilizadas no Rondon e que estas valorizam as experiências da comunidade e dos universitários, corroborando com uma ação educadora profícua. Palavras-chave: Estratégia de ensino. Educação em saúde. Projeto Rondon EDUCATION STRATEGIES FOR EDUCATION AND HEALTH: INTEGRATIVE REVIEW AbstractIdentify teaching strategies for educational activities from the project Rondon . Integrative review study , carried out from June 2015 , closely following the stages that comprise the method , presenting a sample of 11 publications. Two main groups have been identified by their similarity: 1. Group Talk, Teamwork , group discussion ; 2. As play activities: experiential tools and games. The authors conclude that these strategies were used in the project Rondon and that they value the experiences from the community and from the university students, confirming a useful educative action.