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Статті в журналах з теми "Trofia"
Taniwaki, Ricardo Hideo, André Henrique Rosa, Maria Do Carmo Calijuri, and Viviane Moschini Carlos. "VARIAÇÃO ESPACIAL DO GRAU DE TROFIA E DA BIOMASSA FITOPLANCTÔNICA NO RESERVATÓRIO DE ITUPARARANGA (SÃO PAULO, BRASIL)." Holos Environment 11, no. 2 (April 16, 2011): 170. http://dx.doi.org/10.14295/holos.v11i2.5632.
Повний текст джерелаLeonardo, A. F., A. E. Baccarin, T. D. Trombeta, L. P. Machado, E. T. Teramoto, and G. W. Bueno. "Índice de estado trófico e qualidade da água na produção de tilápias em tanques-rede em represa rural na região da Mata Atlântica na América do Sul." Archivos de Zootecnia 67, no. 258 (April 15, 2018): 194–99. http://dx.doi.org/10.21071/az.v67i258.3654.
Повний текст джерелаSouza Júnior, Teobaldo Gabriel de, Ana Célia Maia Meireles, Carlos Wagner Oliveira, Yannice Tatiane da Costa Santos, and Rafaella de Lima Roque. "Açude Grande de Cajazeiras (PB): um insustentável exemplo de descuido com a água no semiárido brasileiro." Revista Brasileira de Educação Ambiental (RevBEA) 15, no. 3 (May 27, 2020): 315–37. http://dx.doi.org/10.34024/revbea.2020.v15.9701.
Повний текст джерелаMaia, Amanda Alves Domingos, Sérgio Luís de Carvalho, and Fernando Tadeu de Carvalho. "Comparação de dois índices de determinação do grau de trofia nas águas do Baixo Rio São José dos Dourados, São Paulo, Brasil." Engenharia Sanitaria e Ambiental 20, no. 4 (December 2015): 613–22. http://dx.doi.org/10.1590/s1413-41522015020040121258.
Повний текст джерелаD'Alessandro, Emmanuel, and Ina Nogueira. "AVALIAÇÃO DO ÍNDICE DE ESTADO TRÓFICO NO LAGO DOS TIGRES, BRITÂNIA, GOIÁS." Revista Gestão & Sustentabilidade Ambiental 7, no. 3 (October 3, 2018): 98. http://dx.doi.org/10.19177/rgsa.v7e3201898-128.
Повний текст джерелаSilva, William Marcos da, and Takako Matsumura-Tundisi. "Checklist dos Copepoda Cyclopoida de vida livre de água doce do Estado de São Paulo, Brasil." Biota Neotropica 11, suppl 1 (December 2011): 559–69. http://dx.doi.org/10.1590/s1676-06032011000500023.
Повний текст джерелаFarage, José de Alencar Pinto, Antonio Teixeira de Matos, Demetrius David da Silva, and Alisson Carraro Borges. "DETERMINAÇÃO DO ÍNDICE DE ESTADO TRÓFICO PARA FÓSFORO EM PONTOS DO RIO POMBA." REVISTA ENGENHARIA NA AGRICULTURA - REVENG 18, no. 4 (July 30, 2010): 322–29. http://dx.doi.org/10.13083/reveng.v18i4.98.
Повний текст джерелаRosanova, Clauber, Emílio Sousa Pinho, Flávia Tavares Matos, Alberto Akama, Guilherme Wolff Bueno, and Daniela Barbosa Macedo. "MONITORAMENTO DA AQUICULTURA EM RESERVATÓRIOS CONTINENTAIS POR MEIO DO ÍNDICE DE ESTADO TRÓFICO." Nativa 7, no. 3 (April 30, 2019): 262. http://dx.doi.org/10.31413/nativa.v7i3.6924.
Повний текст джерелаSantos, Francini Vila, Fabio Amadeo Lansac-Toha, and Claudia Costa Bonecker. "Estrutura das Assembléias de Cladóceros em Reservatórios nos Estados de São Paulo e Paraná: Gradientes Espaciais e Grau de Trofia." Oecologia Australis 15, no. 3 (September 2011): 494–510. http://dx.doi.org/10.4257/oeco.2011.1503.05.
Повний текст джерелаBreneselović, Luka, and Orsat Ligorio. "Porijeklo ornitonima Trogir." Croatica et Slavica Iadertina 2, no. 8 (March 21, 2013): 363. http://dx.doi.org/10.15291/csi.713.
Повний текст джерелаДисертації з теми "Trofia"
Quintão, José Maurício Brandão. "Decomposição de macrófitas aquáticas em reservatórios com diferentes graus de trofia." reponame:Repositório Institucional da UnB, 2012. http://repositorio.unb.br/handle/10482/10947.
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A proliferação de macrófitas aquáticas é um problema recorrente em reservatórios brasileiros, causando danos à qualidade da água e prejuízos econômicos aos responsáveis pelo seu gerenciamento. O potencial de crescimento dessas plantas gera um banco de detritos que, normalmente, acumula-se na zona litoral dos reservatórios e entra em processo de decomposição. A decomposição é um processo ecológico que depende de fatores físicos, químicos e biológicos, influenciada basicamente pela química da água, qualidade dos detritos e composição da comunidade associada. O objetivo deste estudo foi comparar os coeficientes máximos de decomposição (k) e avaliar a influência da comunidade microbiana e de invertebrados aquáticos sob a perda de massa de Eichhornia crassipes e Typha domingensis em um reservatório eutrófico e oligotrófico. As macrófitas verdes foram coletadas no reservatório eutrófico e, em laboratório, estas foram pesadas, secas ao ar e colocadas em “litter bags” (malha de 10 mm), que foram incubados nos dois reservatórios. Quatro replicatas foram retiradas nos tempos amostrais 7, 15, 30, 60, 90 e 120 dias. As variáveis físicas e químicas da água foram mensuradas a cada ida ao campo. Os coeficientes de decomposição foram calculados a partir do modelo de decaimento exponencial negativo e a caracterização química inicial dos detritos foi feita para ambas as espécies. A densidade de leveduras foi estimada pela contagem das colônias e a biomassa microbiana total e de fungos foi avaliada pela quantificação das concentrações de ATP e ergosterol, respectivamente. Os resultados revelam uma elevada perda de massa em sete dias devido à lixiviação e ambas as espécies se decompuseram mais rápido no reservatório eutrófico (E. crassipes; k = 0,033 dia -1 e T. domingensis; k = 0,024 dia -1) do que no oligotrófico (E. crassipes; k = 0,027 dia -1 e T. domingensis; k = 0,010 dia -1). A qualidade dos detritos influenciou a perda de massa inicial entre as espécies, bem como a colonização por micro-organismos e invertebrados aquáticos. Em relação à comunidade microbiana, a participação das bactérias no processo de decomposição parece ter sido mais importante no reservatório eutrófico, enquanto os fungos foram mais relevantes no oligotrófico. A comunidade de invertebrados aquáticos diferiu quanto à riqueza e densidade de organismos entre os reservatórios, provavelmente devido às diferenças na qualidade da água. Os resultados indicam que a maior disponibilidade de nutrientes (N- total, NH4+, NO2-, NO3-, p- total, PO4-), bem como as variações nas concentrações de oxigênio dissolvido e na temperatura da água podem ter acelerado o processo de decomposição, afetando a estrutura e a atividade da comunidade microbiana, bem como a composição de invertebrados. T. domingensis (decomposição lenta) é capaz de reter por mais tempo os nutrientes em seus tecidos, podendo ser utilizada em estratégias de manejo dos nutrientes no reservatório, enquanto E. crassipes (decomposição rápida) devolve ao sistema, em um curto espaço de tempo, grandes quantidades de nutrientes, dificultando o controle da eutrofização. _________________________________________________________________________________ ABSTRACT
The proliferation of macrophytes is a recurrent problem in the Brazilian reservoirs that causes damage to water quality and economic losses to the managers. The growth of these plants produces a bank of litter that normally accumulates in the littoral zone of reservoirs which starts the decomposition. Decomposition is a process that depends on physical, chemical and biological factors, which are affected by the chemistry of water, the quality of litters and the composition of the associate community. The aims of this study were to compare the maximum decay rates of leaves (k) and evaluate the influence of microbial community and aquatic invertebrates in the leaves breakdown of Eichhornia crassipes and Typha domingensis in an eutrophic and oligotrophic reservoir. Green macrophytes leaves were “air dried” and placed in "litter bags" (10 mm mesh), which were incubated into the reservoirs, and four replicated were removed in 7, 15, 30, 60, 90 and 120 days. Water’s physical and chemical variables were measured in situ. The leaves breakdown was estimated by the negative exponential decay model and the initial chemical characterization was done for both species. The density of yeasts was estimated by counting the colonies and the microbial and fungi total biomass were evaluated by measuring the concentrations of ATP and ergosterol, respectively. The results showed a high mass loss in seven days due to leaching and both species decomposed faster in the eutrophic reservoir (E. crassipes; k = 0,033 dia -1 e T. domingensis; k = 0,024 dia -1) rather than in the oligotrophic (E. crassipes; k = 0,027 dia -1 e T. domingensis; k = 0,010 dia -1). The quality of detritus influenced the proportion of initial mass loss between species and colonization by microbial and aquatic invertebrates. In relation to the microbial community, the participation of bacteria in the decomposition seems to have been more important in the eutrophic reservoir, while the fungi were more important in the oligotrophic. The community of invertebrates differed in richness and density of organisms among the reservoirs, probably due to differences in water quality. The results indicated that the higher availability of nutrients (N- total, NH4+, NO2-, NO3-, P- total, PO4-), dissolved oxygen and water temperature might have accelerated the decomposition, affecting the structure and activity of the microbial community, as well as the composition of invertebrates. T. domingensis (slow decay rate) is able to maintain the nutrients in their tissues for a longer time, it may be used as strategies for managing nutrients stocks in reservoirs, while E. crassipes (fast decay rate) returns large quantities of nutrients to the system in a short time, making it difficult to control eutrophication processes.
Facca, Chiara <1974>. "Fitoplancton e microfitobenthos come indicatori dello stato di trofia in ambienti costieri." Doctoral thesis, Università Ca' Foscari Venezia, 2003. http://hdl.handle.net/10579/313.
Повний текст джерелаSilva, Angela Maria. "Diatomáceas com potencial indicador do estado trófico de dois reservatórios com diferentes padrões de trofia." reponame:Repositório Institucional da UFPR, 2009. http://hdl.handle.net/1884/21076.
Повний текст джерелаAlmeida, Viviane Lúcia dos Santos. "Comunidades planctônicas e qualidade da água em reservatórios tropicais urbanos com diferentes graus de trofia." Universidade Federal de São Carlos, 2011. https://repositorio.ufscar.br/handle/ufscar/1707.
Повний текст джерелаUniversidade Federal de Sao Carlos
The influence of temporal and spatial gradients on the physical and chemical variables, phyto- and zooplanktonic communities were evaluated in two shallow urban reservoirs with different trophic state from Pernambuco State, Northeast Brazil. Monthly samples were taken during a complete hydrological cycle (March 2008 to February 2009), considering a point of study in the Prata reservoir and two points in the Apipucos reservoir, always between 08:30 and 11:00. Biological indexes for planktonic communities were used to understand better the effect of water quality conditions on biota. High levels of eutrophication were observed in the Apipucos reservoir. In the Prata oligotrophic reservoir, the pH was ever considered acid. The values reported for physical and chemical variables and chlorophyll a reflected the trophic state of each system. Higher values for richness, diversity, density and biomass of plankton communities were recorded in the Apipucos reservoir, especially for phytoplankton. However, phytoplankton evenness was higher in the Prata reservoir, while for zooplankton the values obtained in both reservoirs were very similar. Rainfall governed the temporal dynamics of the analyzed variables, and the seasonal variation exerted great influence, especially in the Apipucos reservoir. Aquatic macrophytes seeming to exert a prominent role in the ecological processes in the studied environments. In general, vertical homogeneity of water column was evidenced in both reservoirs, probably caused by the wind action. In Apipucos reservoir, the point 2 showing the higher phosphate nutrient levels and more severe deterioration conditions of water quality, in relation to point 1. Despite the low densities recorded for the toxic cyanobacteria species present in the Prata reservoir (Dolichospermum sp. Geitlerinema amphibium and Lyngbya spp.) it is highlighted the need for a periodic monitoring of population development of these organisms. It is suggested that the zooplankton community do not exerts significant grazing pressure on phytoplankton in both reservoirs, indicating the predominance of the bottom-up on the top-down effect in the control of planktonic populations. The biological indexes for planktonic communities were effectives in assessing water quality in both reservoirs, emphasizing the potencial of these organisms in the characterization of environmental conditions of aquatic systems. Overall, the hypotheses tested were confirmed, especially regarding the influence of trophic state on the physical and chemical variables, composition, diversity and structure of phytoand zooplankton. However, it is noteworthy that seasonality had greater influence in the Apipucos eutrophic reservoir, while in the Prata reservoir only few variables presenting a significative seasonal variation.
A influência dos gradientes temporal e espacial sobre as variáveis físicas, químicas e comunidades fito e zooplanctônicas foi avaliada em dois reservatórios urbanos rasos com diferentes graus de trofia, localizados no estado de Pernambuco, Nordeste do Brasil. Amostragens mensais foram realizadas durante um ciclo anual completo (março de 2008 a fevereiro de 2009), considerando um ponto de estudo no reservatório do Prata e dois no reservatório de Apipucos, sempre no horário entre 08h30 e 11h00. Índices biológicos para as comunidades planctônicas foram utilizados para um melhor entendimento do efeito das condições de qualidade da água sobre a biota. Elevados níveis de eutrofização foram observados no reservatório de Apipucos. No reservatório oligotrófico do Prata o pH foi sempre considerado ácido. Os valores registrados para as variáveis físicas e químicas e clorofila a refletiram as condições nutricionais de cada sistema. Foram registrados maiores valores para riqueza, diversidade, densidade e biomassa das comunidades planctônicas no reservatório eutrófico de Apipucos, principalmente para o fitoplâncton. Porém, a equitabilidade fitoplanctônica foi maior no reservatório do Prata, enquanto para o zooplâncton os valores obtidos em ambos os reservatórios foram bastante semelhantes. A precipitação pluviométrica regulou a dinâmica temporal das variáveis analisadas, tendo a variação sazonal exercido grande influência, principalmente no reservatório de Apipucos. As macrófitas aquáticas pareceram exercer papel destacado nos processos ecológicos nos ambientes estudados. Foi evidenciada, de forma geral, homogeneidade vertical da coluna d‟água em ambos os reservatórios, causada provavelmente pela ação dos ventos. No reservatório de Apipucos, o ponto 2 apresentou maiores níveis de nutrientes fosfatados e condições mais severas de deterioração da qualidade da água, em relação ao ponto 1. Apesar das reduzidas densidades registradas para as espécies de cianobactérias tóxicas presentes no reservatório do Prata (Dolichospermum sp., Geitlerinema amphibium e Lyngbya spp.), evidencia-se a necessidade de monitoramento periódico do desenvolvimento populacional destes organismos. Sugere-se que a comunidade zooplanctônica não exerce importante pressão de pastejamento sobre o fitoplâncton, em ambos os reservatórios, indicando predominância do efeito base-topo sobre o efeito topo-base no controle das populações planctônicas. Os índices biológicos para as comunidades planctônicas mostraram-se sensíveis na avaliação da qualidade da água em ambos os reservatórios, evidenciando o potencial desses organismos na caracterização das condições ambientais dos sistemas aquáticos. De forma geral, as hipóteses testadas foram confirmadas, principalmente quanto à influência do estado trófico sobre as variáveis físicas e químicas, composição, diversidade e estrutura das comunidades fito e zooplanctônicas. Porém, ressalta-se que a sazonalidade exerceu maior influência no reservatório de eutrófico de Apipucos, enquanto no reservatório do Prata poucas variáveis apresentaram variação sazonal significativa.
Deberdt, Gina Luísa Boemer. "Estudo de cianobactérias em reservatório com elevado grau de trofia (Reservatório de Salto Grande - Americana - SP)." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-18042016-112245/.
Повний текст джерелаThe study of the bloom of potential toxic cyanobacteria is of paramount significance, mainly when a reservoir endowed with great social and economical values due to both its multiple uses and its nearness to big urban centres - such as the Salto Grande reservoir, located near the city of Americana in the inland of the State of São Paulo, Brazil - is concerned. Based on such actuality, this work was aimed at supplying resources to devise forecasting the occurrence of cyanobacteria as well as the production of toxins in aquatic environments in which high eutrophication levels are observed. Towards this target, the research was carried out in the three steps that follow. In macrocosmic level (reservoir), the variations of the occurrence of both the cyanobacteria species and the remaining phytoplankton classes were found out, and then the toxic potentiality of the samples collected during the rainy season (January, February and March 1998) and the dry season (June, July, August and September 1998) in two sampling stations at the Salto Grande reservoir was analysed. In mesocosrnic scale (tanks), the variations in the occurrences of the classes of phytoplankton and of the cyanobacteria species - as well as the variations in production of toxins as a function of the ratio N/P that was dealt with by means of dosing nitrogen and phosphorus in the water - were observed during the dry season. In microcosmic level (glass bottles \"in lab\"), the effect of reducing phosphorus (and consequently increasing the ratio N/P) on the growth and the production of toxins in cultures of Microcystis aeruginosa (Kützing) Kützing strains - isolated from bloom samples of this species at the Salto Grande reservoir, during the wet and the dry seasons - was tested. At the environment, the presence of rnicrocystin in the water of all the samples, with the exception of the 25th of February 1999, was detected. Apart from the station 2 during January 2th 1999 (39.53 µg.L-1) and March 2th 1999 (3.98 µg.L-1), the concentrations stayed below the limit of acceptability (1 µg.L-1). At the experiments in mesocosmic scale, in 3 different conditions, increasing in phytoplankton density was observed. At the control condition (without manipulation), both reasonable augmentation of the percentage of the cyanobacteria contribution and diminishment of the other groups during the 11 days were detected. Under the condition of low N/P ratio, a slight rise of the percentage of the cyanobacteria and chlorophycea contribution and a decrease of the cryptophycea were observed; the other groups did not present much change. Under the condition of high N/P ratio, it was seen that the cyanobacteria increased, the chlorophycea remained unaffected and the cryptophycea decreased in comparison to the initial percentages. The conditions ofthe tanks that had been maintained at low N/P ratio favoured more the chlorophycea. The cyanobacteria presented biomass augmentation under the conditions of the tanks that had been maintained with high N/P ratio. For every test at the microcosmic level, the exponential stage had begun at the 8th development day. After being experimented for nearly 18 days, yield decrease of the cultures at the environment ASM-1 with phosphorus reduction was observed. In every scale that had been studied, it was noted that the microcystin concentration is related to unfavourable factors as far as the development of the toxic species is concerned. However, the determining causes for the growth of toxic cyanobacteria played different roles in each scale studied. At the macrocosmic level, enrichment was the responsible for increasing the density of the toxic species. At the microcosmic level, phosphorus availability had been directly related to Microcystis aeruginosa growth rate and, therefore, to the increase of microcystin concentration.
Cordeiro, Susy Ferreira Oliveira. "Avaliação do grau de trofia das águas do reservatório da usina hidrelétrica Barra dos Coqueiros - GO." Universidade Federal de Goiás, 2013. http://repositorio.bc.ufg.br/tede/handle/tede/3893.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The increasing energy demand made there was a use of part of the water potential energy of Brazil, and in this context the use of the basin of Rio Claro, one of the main tributaries of the Rio Parnaíba basin, located in the southern state of Goiás also framed, and the target of this study is the reservoir of the hydroelectric Barra dos Coqueiros, located in the middle portion of the basin. The enrichment of water with nutrients is called eutrophication and this is measured by calculating the Trophic State Index (TSI). The goal of this research is to evaluate and classify TSI reservoir of the hydroelectric Barra dos Coqueiros by proposed method of Carlson (1977) and modified by Toledo (1984) and Lamparelli (2010) in two distinct periods, dry (July 2012) and rainy (January 2013). The variables analyzed are: phosphorus, chlorophyll a and Secchi depth transparency, which were applied to the equations proposed by each method. The total proposed EIT in Carlson (1977) and Toledo (1983) had little variation was oligotrophic and mesotrophic dominance in eutrophic and mesotrophic dry period during the rainy season. Already in porposta of Lamparelli (2004) all classes were diagnosed in both periods. In all variables and applied to the proposed EIT was higher in the rainy season than in the dry.
A crescente demanda energética fez com que houvesse um aproveitamento de parte do potencial hídrico energético do Brasil, e nesse contexto o aproveitamento da bacia do Rio Claro, um dos principais afluentes da bacia do rio Paranaíba, localizado na região sul do estado de Goiás também se enquadrou, e é alvo deste estudo o reservatório da usina hidrelétrica Barra dos Coqueiros, situado na porção média desta bacia. O enriquecimento da água em nutrientes é denominado eutrofização, e a medida desta são através do calculo do Índice do Estado Trófico (IET).O objetivo da presente pesquisa, é avaliar e classificar IET do reservatório da Usina Hidrelétrica Barra dos Coqueiros através do metódo proposto de Carlson (1977), e modificado por Toledo (1984) e Lamparelli (2010) em dois períodos distintos, seco (julho de 2012) e chuvoso (janeiro de 2013). As variáveis analisadas são: fósforo, clorofila a e profundidade da transparência de Secchi, as quais foram aplicadas nas equações propostas por cada um dos métodos. O IET da variável clorofila a, predominou duas classes em todas as propostas nos dois períodos analisados, que foi oligotrófico e mesotrófico. O IET total na proposta de Carlson (1977) e Toledo (1983) teve pouca variação teve predomínio oligotrófico e mesotrófico no período seco e eutrófico e mesotrófico no período chuvoso. Já na porposta de Lamparelli (2004) todas as classes foram diagnosticadas nos dois períodos. Em todas as variáveis analisadas e aplicadas às propostas o IET foi mais elevado no período chuvoso que no período seco.
Lamparelli, Marta Condé. ""Graus de trofia em corpos d'água do estado de São Paulo: avaliação dos métodos de monitoramento."." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-20032006-075813/.
Повний текст джерелаData from 1996 to 2001, from CETESBs Surface Water Monitoring Program for the State of São Paulo, amounting to 69 sampling sites, (35 located in rivers and 34 in reservoirs)was gathered, and analyzed for chlorophyll a, nutrients and other variables used on the evaluation of the trophic status, through a modified Carlsons Trophic State Index (TSI), (Toledo, 1983). Higher concentrations of total phosphorus were found in lotic environments, and higher values of chlorophyll a, BOD and nitrogen were registered in lentic ones. There was no significant difference between total phosphorus and total nitrogen between the dry and wet seasons. Phosphorus was the limiting nutrient in both environments. Chlorophyll a, corrected for phaeophytin a, was adopted as an indicator of phytoplanktonic biomass for reservoirs, as well as for rivers. The average ratio between chlorophyll a and phaeophytin a, was of 2:1 in reservoirs and of 1:1 in rivers. Average concentrations of chlorophyll a, calculated as geometric mean, can be used to predict trophic status as well as the probabilities of maximum values in a year period. Chlorophyll a versus total phosphorus regressions were significantly different for rivers and reservoirs, both with high correlation. The prediction of chlorophyll a through phosphorus, in reservoirs, was found to be statistically similar to the one proposed by CEPIS study, and was improved by considering the residence time information. Background values of total phosphorus, soluble orthophosphate, nitrogen, and chlorophyll a, were estimated, as well as transparency for reservoirs and turbidity for rivers, and were considered the boundaries between the oligotrophic and mesotrophic categories. New classifications of trophic status were proposed, as well as new trophic state indexes, specific for rivers and reservoirs, introducing a new trophic category, supereutrophic, which divides the eutrophic and hypereutrophic classes. These new indexes were tested with the data of 2001, 2002 and 2003, and showed higher sensibility and better agreement between chlorophyll a and phosphorus idexes, than the methodology previously used. Eutrophication, not only influences the Aquatic Biota Protection Index (IVA) through the TSI, but through toxicity, detected in cyanobacteria blooms, as well as resulting of the use of copper sulfate to control algae populations.
Luzia, Anna Paula. "Limnologia e grau de trofia dos reservatórios em cascata do rio Tietê (médio e baixo Tietê, São Paulo)." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-30062016-142028/.
Повний текст джерелаReservoirs built in cascade in Tietê river (Barra Bonita, Bariri, Ibitinga, Promissão, Nova Avanhandava and, Três Irmãos) constitute artificial systems with a high ecological, economic and social relevance. Based on the physical, chemical and biological data from the six reservoirs, limnological conditions were evaluated, the abundance of phytoplankton and zooplankton communities and the trophic state of reservoirs through the application of trophic state index, developed by Carlson (1977). The use of phosphorus concentration to determine the index gave the best result, showing a gradual reduction of its concentration in the sequential reservoirs, especially in summer period. The reservoirs that showed up to be eutrophic like Barra Bonita, Bariri and Ibitinga presented a higher abundance and frequency in development of algae belonging to the Cyanophyceae class, especially of Microcystis aeruginosa species. Some species of Rotifera such as Asplanchna sieboldi, Brachionus calyciflorus and, Kellicottia bostoniences, and of Copepoda Calanoida Notodiaptomus iheringi, also served as indicative of trophic state for these systems, since they are associated to eutrophic environments.
Nishimura, Paula Yuri. "Ecologia da comunidade fitoplactônica em dois braços da Represa Billings (São Paulo, SP) com diferentes graus de trofia." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-10112008-202101/.
Повний текст джерелаThe aim of this work was to compare the phytoplankton community composition and diversity in Rio Grande and Taquacetuba branches (Billings Reservoir) and to determinate its controlling factors. Water samples were collected in six depths on February, May, August and November 2005. Physical and chemical variables and the phytoplankton community were analyzed. In Rio Grande, 72 phytoplankton taxa were found, distributed among 7 classes. High diversity and uniformity were observed and water body was classified as oligo/mesotrophic. Relative abundance alternate among Zygnemaphyceae, Bacillariophyceae, Euglenophyceae and Chlorophyceae; among C- e R-strategists e among assemblages D, X1, W1 e T. Vertically, alternation of abundant classes was observed due to morphologic characteristics and/or different physiological requirements. In Taquacetuba, 66 phytoplankton taxa were found, distributed among 7 classes. Low diversity and uniformity were observed and water body was classified as eu/supereutrophic. Cyanobacteria R-strategist dominated, especially S1 e Sn assemblages. Apparently, phytoplankton dynamics in Taquacetuba is controlled by competitive exclusion and disturbs, because cyanobacteria dominance inhibit the growth of other classes, while the high diversity in Rio Grande is kept by the presence of disturbs. These patterns observed can be explained by differences on physical and chemical variables, on water intake functioning and on water destinations. Rio Grande is constantly treated with copper sulfate to control algae biomass and to maintain good water quality to public supply. Although, sulfatation as a palliative measure need to be cautious and more studies are necessary to avoid problems still unknown in long term. Taquacetubas water is transferred without treatment to Guarapiranga Reservoir. It could be compromising the water quality of Guarapiranga, which supply a great part of São Paulo city population.
Santos, André Cordeiro Alves dos. "Heterogeneidade espacial e variabilidade temporal de dois reservatórios com diferentes graus de trofia, no Estado de São Paulo." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-17062016-153433/.
Повний текст джерелаThe understanding of the phytoplanktonic community in unstable systems, like reservoirs, needs the knowledge of variability scales. Based on it, a study of the spatial heterogeneity and temporal variability in two reservoirs with different trophic levels in São Paulo State was performed in 20 stations of the Salto Grande reservoir and in 19 of Lobo reservoir, for 3 consecutive days, in four periods: October 1999, January, April, June, and July 2000. Total and dissolved nutrients, suspended material, inorganic carbon, chlorophyll, biomass, density, and phytoplanktonic community composition were determined. The two reservoirs showed similarities in their spatial structure with the formation of three distinct zones. The riverine zone, wish was mixed, showing less light penetration and higher nutrients concentration; the transistion zone and the lacustrine zone, which was more stratified, with higher light penetration and lower nutrients concentration. Despite this compartimentalization, the spatial heterogeneity in Salto Grande reservoir was larger than in Lobo reservoir, mainly in function of the longitudinal gradient of nutrients and light. The daily variability (3 days) in the two reservoirs was not significant in the phytoplanktonic community determination. The seasonal variability scale in the two reservoirs was determined, mainly due to the stratification and mixing variation patterns and was essential in the phytoplanktonic community composition. This influence was more evident in the Lobo reservoir. The temporal variation and spatial heterogeneity of the dominants species and taxonomic groups from the phytoplanktonic community, (Microcystis aeruginosa, Anabaena circinalis and Anabaena crassa in Salto Grande reservoir and Aphanocapsa delicatissima, Coelastrum reticulatum and Aulacoseira granulata in the Lobo) were determined by complex processes of stratification, mixing, and light availability in the two reservoirs. The results obtained are important for the understanding of the environmental variability of tropical reservoirs and for the planning of sampling aim at the management of these systems.
Книги з теми "Trofia"
Andrzej, Górniak, and Uniwersytet w Białymstoku Zakład Hydrobiologii., eds. Jeziora Wigierskiego Parku Narodowego: Aktualna jakość i trofia wód. Białystok: Wydawnictwo Uniwersytetu w Białymstoku, 2006.
Знайти повний текст джерелаZinna, Lucio. Abbandonare Troia. Forli: Forum/Quinta Generazione, 1986.
Знайти повний текст джерелаZinna, Lucio. Abbandonare Troia. Forlì: Forum, 1986.
Знайти повний текст джерелаBrucia troia. [Milan, Italy]: Bompiani, 2007.
Знайти повний текст джерелаAmilcar, Soares, ed. Geostatistics Tróia '92. Dordrecht: Kluwer Academic Publishers, 1993.
Знайти повний текст джерелаZajdel, Janusz A. Cylinder van Troffa. 2nd ed. Katowice: Krajowa Agencja Wydawnicza, 1990.
Знайти повний текст джерелаGabriele, Ricci, ed. Storia di Troia. Parma: U. Guanda, 2004.
Знайти повний текст джерелаCârdu, Petru. În biserica Troia. Panciova: Editura Libertatea, 1992.
Знайти повний текст джерелаCarvalho, António Borges de. Os Cavalos de Tróia. Mem Martins: Publicações Europa-América, 2000.
Знайти повний текст джерелаAkademik Trofim Denisovich Lysenko. Moskva: Luch, 2010.
Знайти повний текст джерелаЧастини книг з теми "Trofia"
Fabiš, Marian. "Troia and Fallow Deer." In Troia and the Troad, 263–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05308-9_16.
Повний текст джерелаGooch, Jan W. "Trolit AE." In Encyclopedic Dictionary of Polymers, 771. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_12172.
Повний текст джерелаGooch, Jan W. "Trolit F." In Encyclopedic Dictionary of Polymers, 772. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_12174.
Повний текст джерелаRingelmann, R., and Beate Heym. "Leishmania tropica." In Parasiten des Menschen, 170–71. Heidelberg: Steinkopff, 1991. http://dx.doi.org/10.1007/978-3-642-85397-5_56.
Повний текст джерелаMehlhorn, Heinz. "Elephantiasis Tropica." In Encyclopedia of Parasitology, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-27769-6_1026-2.
Повний текст джерелаMehlhorn, Heinz. "Elephantiasis Tropica." In Encyclopedia of Parasitology, 881–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_1026.
Повний текст джерелаMaynard, Christopher. "The Troika." In A Companion to Ronald Reagan, 529–45. Oxford, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118607770.ch29.
Повний текст джерелаRodríguez, Verónica. "Damascus: Trouma." In David Greig’s Holed Theatre, 205–23. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06182-1_10.
Повний текст джерелаAlexandrov, Victor, and Roy Monkcom. "Stalin's Troyka." In The Kremlin, 258–66. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003375951-36.
Повний текст джерелаStok, Fabio. "Il mito di Troia resurgens." In Le figure del mito in Properzio, 73–91. Turnhout: Brepols Publishers, 2017. http://dx.doi.org/10.1484/m.spl-eb.5.112116.
Повний текст джерелаТези доповідей конференцій з теми "Trofia"
Santos, Daniel, Luiz Uchoa, José Neto, Helba Palácio, and Maria Sales. "GRAU DE TROFIA EM RESERVATÓRIOS DE UMA BACIA SEMIÁRIDO DO CEARÁ, BRASIL." In III Simpósio Brasileiro de Recursos Naturais do Semiárido. Associação COMVERGIR Sustentavel, 2017. http://dx.doi.org/10.18068/iiisbrns2017.gas759.
Повний текст джерелаWiegand, Mário, Antônia Nascimento, and Yuri Lima. "ESTIMATIVA DO GRAU DE TROFIA DE RESERVATÓRIOS ARTIFICIAIS COM BASE NO TEMPO DE RESIDÊNCIA." In III Simpósio Brasileiro de Recursos Naturais do Semiárido. Associação COMVERGIR Sustentável, 2017. http://dx.doi.org/10.18068/iiisbrns2017.aisrs632.
Повний текст джерелаSilva, Eldir, Luiz Uchoa, Ronner Gondim, and José Neto. "GRAU DE TROFIA EM RESERVATÓRIOS DE UMA BACIA SEMIÁRIDA APLICANDO DIFERENTES ÍNDICES DE ESTADO TRÓFICO." In III Simpósio Brasileiro de Recursos Naturais do Semiarido. Associação COMVERGIR Sustentavel, 2017. http://dx.doi.org/10.18068/iiisbrns2017.gas595.
Повний текст джерелаSara Pinheiro de Oliveira, Carmem, Aleson da Silva Fonseca, and Francesco de Araújo Lopes. "ANÁLISE DO GRAU DE TROFIA NO RESERVATÓRIO PASSAGENS DAS TRAÍRAS, MUNICÍPIO DE SÃO JOSÉ DO SERIDÓ – RN." In I CONGRESSO INTERNACIONAL DAS CIÊNCIAS DA SAÚDE. Instituto internacional Despertando Vocações, 2019. http://dx.doi.org/10.31692/icointerpdvs.2019.0005.
Повний текст джерелаBeatriz Severo Magalhaes, Francisca, and Ítala da Silva Lopes. "ANÁLISE DO ESTADO DE TROFIA DO AÇUDE CEDRO: IMPACTOS AMBIENTAIS SOB A QUALIDADE DA ÁGUA APÓS A ESTIAGEM." In I Congresso Virtual de Estudantes e Profissionais de Engenharia Ambiental e Sanitária. Goiânia, Goiás: Even3, 2020. http://dx.doi.org/10.29327/convepeas.269913.
Повний текст джерелаWimmer, Manuel, Gerti Kappel, Johannes Schoenboeck, Angelika Kusel, Werner Retschitzegger, and Wieland Schwinger. "TROPIC." In Proceeding of the 24th ACM SIGPLAN conference companion. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1639950.1640013.
Повний текст джерелаKeskin, Onur, Laurent Jolissaint, Audrey T. Bouxin, and Cahit Yesilyaprak. "TROIA adaptive optics system for DAG Telescope." In Adaptive Optics Systems VII, edited by Dirk Schmidt, Laura Schreiber, and Elise Vernet. SPIE, 2020. http://dx.doi.org/10.1117/12.2560528.
Повний текст джерелаByrd, Michael L., Terry L. Mcinturff, Bruce C. Volkert, and John W. Hellums. "Troika Hardpipe Jumper System." In Offshore Technology Conference. Offshore Technology Conference, 1998. http://dx.doi.org/10.4043/8781-ms.
Повний текст джерелаBeckmann, Marvin M., Jim W. Riley, Bruce C. Volkert, and John F. Chappell. "Troika- Towed Bundle Flowlines." In Offshore Technology Conference. Offshore Technology Conference, 1998. http://dx.doi.org/10.4043/8848-ms.
Повний текст джерелаHesketh-Prichard, R. M., N. Brown, L. R. Twyford, and M. J. Given. "Troika Subsea Production Control System." In Offshore Technology Conference. Offshore Technology Conference, 1998. http://dx.doi.org/10.4043/8792-ms.
Повний текст джерелаЗвіти організацій з теми "Trofia"
von Balthasar, Hans Urs. Trois formes d’abandon. Saint John Publications, 2022. http://dx.doi.org/10.56154/rp.
Повний текст джерелаTroksa, M. Michael Troksa: ME 321 Final Assessment. Office of Scientific and Technical Information (OSTI), August 2020. http://dx.doi.org/10.2172/1650431.
Повний текст джерелаD., Donato, Kauffman J.B., Murdiyarso D., Kurnianto S., Stidham M., and Kanninen M. Mangrove adalah salah satu hutan terkaya karbon di kawasan tropis. Center for International Forestry Research (CIFOR), 2012. http://dx.doi.org/10.17528/cifor/003773.
Повний текст джерелаLilly, B. Media Subtype Registration for Media Type text/troff. RFC Editor, January 2006. http://dx.doi.org/10.17487/rfc4263.
Повний текст джерелаBolduc, A. M. Géologie des formations superficielles, région de Trois-Rivières, Québec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210533.
Повний текст джерелаSanabia, Elizabeth R. Training and Research in Oceanic and Atmospheric Processes in Tropical Cyclones (TROPIC). Fort Belvoir, VA: Defense Technical Information Center, September 2013. http://dx.doi.org/10.21236/ada597689.
Повний текст джерелаSanabia, Elizabeth R. Training and Research in Oceanic and Atmospheric Processes in Tropical Cyclones (TROPIC). Fort Belvoir, VA: Defense Technical Information Center, September 2011. http://dx.doi.org/10.21236/ada557135.
Повний текст джерелаCaelles, Carme. La inflamación, primera línea de defensa o caballo de Troya. Sociedad Española de Bioquímica y Biología Molecular (SEBBM), June 2017. http://dx.doi.org/10.18567/sebbmdiv_anc.2017.06.1.
Повний текст джерелаCIFOR. Evaluasi dampak sertifikasi Forest Stewardship Council (FSC) terhadap pengelolaan hutan alam di daerah tropis. Center for International Forestry Research (CIFOR), 2013. http://dx.doi.org/10.17528/cifor/004347.
Повний текст джерелаWarsaw, Barry, and John Michaloski. The TROI [Telerobotic Operator Interface] user's guide. Gaithersburg, MD: National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.4471.
Повний текст джерела