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Search Results: 1 - 10 of 194253 matches for " Roger Paulo Mormul e Sidnei Pressinatte Junior "
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BENTHIC INVERTEBRATES AS PAPAGAIO RIVER WATER QUALITY INDICATOR – CAMPO MOUR O – PR
Alexandre Monkolski, Janet Higuti, Luiz Alberto Vieira, Roger Paulo Mormul e Sidnei Pressinatte Junior
SaBios : Revista de Saúde e Biologia , 2006,
Abstract: The pollutant substance poured in the environment causes negative impacts for life forms that inhabit the sources. The biological monitoring of aquatic ecosystems has as objective the evaluation of the quality of water, in function of alterations of the community of macroinvertebrates. Among these communities Benthic is distinguished, because it reflects the state of conservation or degradation of the sources, changing their morphophysiological characteristics and its presence or absence in water. The quality of Papagaios’ river water was evaluated by physical-chemistry analysis and by density of Benthic macroinvertebrates. Four colleting stations from a stretch of the river were analyzed and samples of sediment and water were collected. At 2nd and 3rd stations there are two cold storage rooms installed at the river’s margins, which treat their effluents in stabilizing lagoons. The 4th station receives the ousting directly from a textile after it has passed by a treatment. Results obtained by biological methods indicated the presence of polluting elements in water. The river’s longitudinal gradient showed a typical sucessorial process of macroinvertebrates from polluted environments, with a significant increase in the density of Oligochaeta and Chironidade, organisms that are tolerant to impacts in water. Considering the four stations that were analyzed, the unwished impacts are occurring in three last ones with more intensity.
Caracteriza o das condi es ambientais de um rio neotropical a partir da densidade, composi o e riqueza de taxa de invertebrados bênticos = Environmental conditions of a neo-tropical river featuring density, composition and taxa richness of bentic invertebrates
Roger Paulo Mormul,Sidnei Pressinatte Junior,Luiz Alberto Vieira,Alexandre Monkolski
Acta Scientiarum : Biological Sciences , 2009,
Abstract: As atividades antrópicas podem causar profundas altera es nas características físicas e químicas dos ambientes aquáticos, assim como na biota. Muitas espécies de invertebrados bent nicos podem auxiliar a indica o dessas altera es. No presente estudo, foi realizada a caracteriza o das condi es ambientais de diferentes pontos do rio 119, Campo Mour o, Paraná, Brasil. Para tanto, foram analisadas condi es físico-químicas da água e coletadas amostras do substrato do rio para análises físicas e biológicas. A densidade, acomposi o e a riqueza dos táxons de invertebrados bênticos encontrados foram utilizadas para diferenciar os pontos quanto às condi es de altera o ambiental. Mudan as na densidade, na composi o e na riqueza foram relatadas em todos os pontos de coleta,principalmente em locais a jusante de áreas alteradas antropicamente. Alguns táxons característicos de locais com boa qualidade de água foram registrados, mas em número inferior ao de táxons que indicam altera es ambientais. Por ser um rio que corta longitudinalmente o perímetro urbano, ele sofre press o antrópica contínua, e a distribui o dos organismos ao longo desse gradiente provavelmente está respondendo às altera es ocorridas em cada local de coleta. Dessa forma, sugere-se a implementa o imediata de um plano de manejo e recupera o para todo o rio ao longo do perímetro urbano. Anthropic activities cause changes in physical and chemical characteristics in aquatic environments, as well as in the biotic component, and several benthic invertebrates species may indicate these changes. In this paper, we characterized the environmental conditions of different sample points in the 119 River, Campo Mour o, State of Paraná, Brazil. Physical and chemical conditions wereanalyzed in water, and samples of the river substrate were collected for physical and biological analysis. Density, composition and taxa richness of benthic invertebrates were used to distinguish the sampling points according to environmental changes. Alterations indensity, composition and richness were reported at all sampling points and samplings, mainly in sites downstream from areas with anthropic changes. Some characteristic taxa of locals with good water quality were recorded, but in smaller numbers compared with taxa that indicate environmental changes. Because the river crosses the urban area, it suffers continuous anthropic pressure and organism distribution throughout this gradient responds to the changes that occur in each sampling point. Thus, our results suggest that animmediate management plan is necessary to
Sucess o de invertebrados durante o processo de decomposi o de duas plantas aquáticas (Eichhornia azurea e Polygonum ferrugineum) = Succession of invertebrates during the decomposition process of two aquatic plants (Eichhornia azurea and Polygonum ferrugineum)
Roger Paulo Mormul,Luiz Alberto Vieira,Sidnei Pressinatte Júnior,Alexandre Monkolski
Acta Scientiarum : Biological Sciences , 2006,
Abstract: A coloniza o de invertebrados durante o período de 56 dias de decomposi o de duas espécies de plantas aquáticas (Eichhornia azurea e Polygonum ferrugineum) foi investigada para determinar o papel de macroinvertebrados no processo de fragmenta o da folha. Durante aanálise do material, foi constatado um total de 2096 invertebrados, associados a E.azurea e 6154 invertebrados associados a P. ferrugineum, identificados dentro de 18 táxons, com predominanciade larvas de Diptera da família Chironomidae, seguido por espécimes de Oligochaeta, microcrustáceos como Cladocera e Copepoda. Em ambas as plantas, os macroinvertebrados mostraram um aumento significativo de densidade ao longo do processo de decomposi o, o que provavelmente está associado à perda de compostos fenólicos. Os resultados sugerem que as espécies de macrófitas apresentam associa es específicas com seus consumidores, ou seja, o processo de sucess o da coloniza o torna-se diferenciado de acordo com as características fenológicas da planta. The invertebrate colonization was investigated during 56-day decomposition of two macrophytes species (Eichhornia azurea andPolygonum ferrugineum). The aim was to determine the role of macroinvertebrates in the process of leaf fragmentation. During material analysis, 2096 invertebrates were associated with E.azureaand 6154 were associated with P. ferrugineum, identified in 18 taxons, with predominance of Diptera larvae (Chironomidae family specially), followed by Oligochaeta species and microcrustaceans such as Cladocera and Copepoda. In both macrophytes the macroinvertebratesshowed a significant increase of density through the process of decomposition, which is probably associated with the loss of phenolic compounds. Results suggest that macrophytes specimens show specific associations with their consumers, i.e., the succession process of colonization becomes singular according to the phenolic characteristics of the plant.
EVALUATION OF WATER QUALITY IN HEADWATER OF THE S O FRANCISCO’S SLUM FROM CAMPO MOUR O/PR.
Roger Paulo Mormul, Angela Kwiatkowski, Diogo de L. N. Zerbini, Andréia A. de Freitas e Adriane C. G. de Almeida
SaBios : Revista de Saúde e Biologia , 2006,
Abstract: The quality of the water is a universal necessity that demands attention of sanitary authorities and general consumers, mainly for fountains like wells, springs and headwaters destined to human consumption, since their contamination by human and animal excretions may become a vehicle that transmit diseases. The objective of this research was to evaluate the microbiological conditions and the potability of water in three headwaters located in S o Francisco’s slum in Campo Mour o - Paraná. The multiple tube method was used to microbiological evaluation of water. Presumptive and confirmative test for total coliform bacteria and the test for presence of thermotolerant coliforms were carried out. The results have shown that water collected in three evaluated headwater were not up to the microbiological potability standards determined by the National Agency of Health Surveillance. The families which use this water are in risky of contracting diseases. It demonstrates the importance of alert the competent authorities about the necessity of drinking water supply and garbage disposal in S o Francisco slum.
Macrophytes in the upper Paraná river floodplain: checklist and comparison with other large South American wetlands
Alves Ferreira,Fernando; Mormul,Roger Paulo; Thomaz,Sidinei Magela; Pott,Arnildo; Pott,Vali Joana;
Revista de Biología Tropical , 2011,
Abstract: neotropical aquatic ecosystems have a rich aquatic flora. in this report, we have isted the aquatic flora of various habitats of the upper paraná river floodplain by compiling data rom literature and records of our own continuous collections conducted during the period 2007-2009. our main purposes were to assess the macrophyte richness in the paraná floodplain, to compare it with other south american wetlands and to assess whether the number of species recorded in south american inventories has already reached an asymptote. we recorded a total of 153 species of macrophytes in the upper paraná river floodplain, belonging to 100 genera and 47 families. in our comparative analysis, a clear floristic split from other south american wetlands was shown, except for the pantanal, which is the closest wetland to the paraná floodplain and, therefore, could be considered a floristic extension of the pantanal. the species accumulation curve provides evidence that sampling efforts should be reinforced in order to compile a macrophyte flora census for south america. the high dissimilarity among south american wetlands, together with the lack of an asymptote in our species accumulation curve, indicates that the sampling effort needs to be increased to account for the actual species richness of macrophytes in this region. rev. biol. trop. 59 (2): 541-556. epub 2011 june 01.
Macrophytes in the upper Paraná river floodplain: checklist and comparison with other large South American wetlands
Fernando Alves Ferreira,Roger Paulo Mormul,Sidinei Magela Thomaz,Arnildo Pott
Revista de Biología Tropical , 2011,
Abstract: Neotropical aquatic ecosystems have a rich aquatic flora. In this report, we have isted the aquatic flora of various habitats of the upper Paraná River floodplain by compiling data rom literature and records of our own continuous collections conducted during the period 2007-2009. Our main purposes were to assess the macrophyte richness in the Paraná floodplain, to compare it with other South American wetlands and to assess whether the number of species recorded in South American inventories has already reached an asymptote. We recorded a total of 153 species of macrophytes in the Upper Paraná River floodplain, belonging to 100 genera and 47 families. In our comparative analysis, a clear floristic split from other South American wetlands was shown, except for the Pantanal, which is the closest wetland to the Paraná floodplain and, therefore, could be considered a floristic extension of the Pantanal. The species accumulation curve provides evidence that sampling efforts should be reinforced in order to compile a macrophyte flora census for South America. The high dissimilarity among South American wetlands, together with the lack of an asymptote in our species accumulation curve, indicates that the sampling effort needs to be increased to account for the actual species richness of macrophytes in this region. Rev. Biol. Trop. 59 (2): 541-556. Epub 2011 June 01. Los ecosistemas acuáticos neotropicales tienen una rica flora acuática. En este informe, hemos hecho una lista de la flora acuática de diversos hábitats de la alta planicie de inundación del río Paraná mediante la compilación de datos de la literatura y los registros de nuestras colecciones propias realizadas durante el período 2007-2009. Nuestros principales objetivos fueron evaluar la riqueza de macrófitos en la llanura aluvial del Paraná, para compararlo con otros humedales de América del Sur y evaluar si el número de especies registradas en los inventarios suramericanos ya han alcanzado una asíntota. Se registraron un total de 153 especies de macrófitas en la llanura de inundación del Río Alto Paraná, pertenecientes a 100 géneros y 47 familias. En nuestro análisis comparativo, se mostró una clara división florística de otros humedales de América del Sur, con excepción del Pantanal, que es el más cercano a los humedales de la planicie de inundación del Paraná y, por tanto, podría considerarse una extensión florística del Pantanal. La curva de acumulación de especies demuestra que los esfuerzos de muestreo deben ser reforzados con el fin de elaborar un censo de la flora de acrófitos para América d
Aquatic macrophytes in the large, sub-tropical Itaipu Reservoir, Brazil
Roger Paulo Mormul,Fernando Alves Ferreira,Thaisa Sala Michelan,Priscilla Carvalho
Revista de Biología Tropical , 2010,
Abstract: In the last three decades, rapid assessment surveys have become an important approach for measuring aquatic ecosystem biodiversity. These methods can be used to detect anthropogenic impacts and recognize local or global species extinctions. We present a floristic survey of the aquatic macrophytes along the Brazilian margin of the Itaipu Reservoir conducted in 2008 and compare this with a floristic survey conducted ten years earlier. We used ordination analysis to determine whether assemblage composition differed among reservoir arms. Macrophyte species were sampled in each of the 235 sampling stations using a boat, which was positioned inside three places of each macrophyte stand to record species and search for small plants. We also collected submerged plants using a rake with the boat moving at constant velocity for ten minutes. We assigned individual macrophyte species to life form and identified representative species for each life form. A total of 87 macrophyte taxa were identified. The "emergent" life forms contained the highest number of species, followed by "rooted submerged" life forms. The extensive survey of macrophytes undertaken in September 2008 recorded more species than a survey conducted between 1995 and 1998. This could be due to changes in water physico-chemistry, disturbances due to water drawdown and the long period between surveys, which may have allowed natural colonization by other species. Additionally, differences in the classification systems and taxonomic resolution used in the surveys may account for differences in the number of species recorded. Assemblage composition varied among the arms and was affected by underwater radiation (as measured using a Secchi disk) and fetch. Five non-native species were found. Two of these non-native species (Urochloa subquadripara and Hydrilla verticillata) are of special concern because they have a high frequency of occurrence and occupy large marginal areas of the reservoir. Future surveys should be conducted to determine the habitat most frequently colonized by these species. This would allow management strategies to be developed to protect native aquatic biota and prevent interference with the recreational and commercial uses of the Itaipu Reservoir. Rev. Biol. Trop. 58 (4): 1437-1452. Epub 2010 December 01. En las últimas tres décadas, las evaluaciones ecológicas rápidas se han convertido en un método importante para medir la biodiversidad de los ecosistemas acuáticos. Estos métodos se pueden utilizar para detectar los impactos antropogénicos y reconocer las extinciones locales o global
Aquatic macrophytes in the large, sub-tropical Itaipu Reservoir, Brazil
Mormul,Roger Paulo; Alves Ferreira,Fernando; Sala Michelan,Thaisa; Carvalho,Priscilla; Silveira,Marcio José; Thomaz,Sidinei Magela;
Revista de Biología Tropical , 2010,
Abstract: in the last three decades, rapid assessment surveys have become an important approach for measuring aquatic ecosystem biodiversity. these methods can be used to detect anthropogenic impacts and recognize local or global species extinctions. we present a floristic survey of the aquatic macrophytes along the brazilian margin of the itaipu reservoir conducted in 2008 and compare this with a floristic survey conducted ten years earlier. we used ordination analysis to determine whether assemblage composition differed among reservoir arms. macrophyte species were sampled in each of the 235 sampling stations using a boat, which was positioned inside three places of each macrophyte stand to record species and search for small plants. we also collected submerged plants using a rake with the boat moving at constant velocity for ten minutes. we assigned individual macrophyte species to life form and identified representative species for each life form. a total of 87 macrophyte taxa were identified. the "emergent" life forms contained the highest number of species, followed by "rooted submerged" life forms. the extensive survey of macrophytes undertaken in september 2008 recorded more species than a survey conducted between 1995 and 1998. this could be due to changes in water physico-chemistry, disturbances due to water drawdown and the long period between surveys, which may have allowed natural colonization by other species. additionally, differences in the classification systems and taxonomic resolution used in the surveys may account for differences in the number of species recorded. assemblage composition varied among the arms and was affected by underwater radiation (as measured using a secchi disk) and fetch. five non-native species were found. two of these non-native species (urochloa subquadripara and hydrilla verticillata) are of special concern because they have a high frequency of occurrence and occupy large marginal areas of the reservoir. future surveys should be c
Compósitos Bioativos Obtidos a Partir da Inser??o de Vidro Bioativo em Matriz de Poli(Metacrilato de Metila)
Silva Junior, Paulo E.;Oréfice, Rodrigo L.;
Polímeros , 2001, DOI: 10.1590/S0104-14282001000300009
Abstract: some bioceramics have the ability to bind to tissues but they show mechanical properties very different from the ones of natural tissues. this fact restricts the use of these materials in a wider range of applications. the goal of this research is to synthesize and characterize polymer matrices reinforced with bioactive glass particles that potentially can combine ability to bond to tissues (bioactivity), with mechanical properties comparable to damage tissues. the composites were produced by bulk polymerization of methyl methacrylate in the presence of bioactive glass particles and an initiator at 60oc. bioactive glass particles were added to the monomer in several concentrations to modify the mechanical properties and bioactivity of the composites. the bioactivity of the materials was evaluated by in vitro tests performed at 37oc in a simulated body fluid for periods of time ranging from 1 hour to 30 days. the composites submitted to in vitro tests were characterized by infrared spectroscopy. the results revealed the deposition of a hidroxy-carbonate-apatite layer on the surface of the composites, confirming their bioactivity. it was also observed that the fraction of the bioactive phase in the composites can be used to control the overall kinetics of the bioactivity process.
Compósitos Bioativos Obtidos a Partir da Inser o de Vidro Bioativo em Matriz de Poli(Metacrilato de Metila)
Silva Junior Paulo E.,Oréfice Rodrigo L.
Polímeros , 2001,
Abstract: Várias bioceramicas s o capazes de se ligarem a tecidos vivos (bioatividade), no entanto apresentam propriedades mecanicas muito diferentes daquelas exibidas por tecidos naturais. Tal fato acaba por restringir o uso desses materiais em um mais extenso número de aplica es biomédicas. Compósitos de matriz polimérica refor ada com uma fase bioativa podem combinar o comportamento bioativo característico de algumas bioceramicas com propriedades mecanicas próximas à de tecidos humanos. O presente trabalho tem como objetivo sintetizar e caracterizar compósitos de matriz polimérica refor ada por partículas de vidro bioativo. Os compósitos foram produzidos a partir da polimeriza o em massa de metacrilato de metila na presen a de partículas de vidro bioativo (vidro de silicato de cálcio, fósforo e sódio). Partículas de vidro foram adicionadas ao mon mero em diversas concentra es para permitir a varia o das propriedades mecanicas e da bioatividade desses compósitos. A bioatividade dos materiais produzidos foi avaliada através de testes in vitro realizados a 37oC em uma solu o simuladora do fluido humano por períodos de tempo de 0 hora a 30 dias. Em seguida, os compósitos submetidos aos testes in vitro foram caracterizados por espectroscopia de infravermelho. O procedimento de síntese mostrou-se eficaz na produ o de compósitos com diferentes fra es volumétricas de partículas distribuídas homogeneamente pelo material. Os resultados dos testes in vitro revelaram a deposi o de uma camada de hidroxiapatita carbonatada (HCA) na superfície dos materiais, comprovando a bioatividade dos compósitos. Foi ainda observado que a cinética de deposi o da camada de HCA pode ser controlada pela fra o volumétrica da fase bioativa.
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