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	Provedor de dados Rev. Bras. Zool. (1) Acta biol.Colomb. (1) Iheringia, Sér. Zool. (1) Neotropical Entomology (1) Rev. Bras. Bot. (1) Autor Alves,Roberto (1) BECHARA,JOSÉ A. (1) FERNÁNDEZ,LUIS (1) Gullo,Bettina S. (1) Junqueira,Andrea O. R. (1) Marins,Flávia O. (1) Martins,Renato (1) Miserendino,M. Laura (1) Novaes,Roberto L. M. (1) Oliveira,Vívian (1) Rocha,Rosana M. (1) TAOUIL,ANDRÉ (1) YONESHIGUE-VALENTIN,YOCIE (1) Mais... Palavra-chave Organic pollution (5) Artificial substrate (1) Assemblages (1) Benthos (1) Bioinvasion (1) Canonical analyses (1) Chironomus (1) Environmental alteration (1) Environmental factors (1) Exotic species (1) Flora (1) Guanabara Bay (1) Leeches (1) Neotropical fish (1) River gradients (1) Seaweeds (1) Streams (1) Tunicata (1) Urbanization (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2014 (1) 2010 (3) 2002 (1) País Brazil (4) Colombia (1) Idioma Inglês (4) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Alterações na composição florística das algas da Praia de Boa Viagem (Niterói, RJ) Rev. Bras. Bot. TAOUIL,ANDRÉ; YONESHIGUE-VALENTIN,YOCIE. A Baía de Guanabara no decorrer da ocupação de suas margens sofreu uma continua degradação, levando-a a grandes modificações em seu entorno e a inúmeros danos ambientais. Além de uma significativa alteração paisagística, ocorreu também uma queda na qualidade de suas águas, devido ao lançamento de grande quantidade de efluentes não tratados (domésticos e industriais). Este trabalho teve como objetivo inventariar a flora algácea da praia de Boa Viagem (Niterói, RJ), compará-la com levantamentos realizados há três décadas. Os resultados mostraram desaparecimento de 30 táxons (49%) outrora existentes no início da década de 70 e o aparecimento de 14 espécies (23%). A flora atual é dominada por Ulva fasciata Delile e Enteromorpha compressa (L.) Nees, espécies... Tipo: Info:eu-repo/semantics/article Palavras-chave: Benthos; Flora; Guanabara Bay; Organic pollution; Seaweeds. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000004 AN ASSESSMENT OF FISH COMMUNITIES ALONGA PIEDMONT RIVER RECEIVING ORGANIC POLLUTION(ACONQUIJA MOUNTAINS, ARGENTINA). Acta biol.Colomb. FERNÁNDEZ,LUIS; BECHARA,JOSÉ A.. The relationships between fish assemblage structure and environmental variables along a pollution gradient in the Medina River were analyzed over a year in four sampling sites (S1-S4). The river flows in a mountain-plain transition and is affected by several small town wastewater and sugar cane industries effluents. Environmental variables were divided in two sets, hereafter named -pollution- and -natural-. The first set included water quality variables modified by anthropogenic activities such as D.O. (Dissolved Oxygen), C.O.D. (Chemical Demand Oxygen), and dissolved ion concentrations. Natural variables included altitude, position, and time of the year. The upstream site (S1) had the lowest species richness and C.P.U.E. (catchperunitofeffort). The number... Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic pollution; River gradients; Neotropical fish; Canonical analyses; Environmental factors. Ano: 2010 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2010000200007 Evaluation of water quality of an urban stream in southeastern Brazil using Chironomidae larvae (Insecta: Diptera) Neotropical Entomology Oliveira,Vívian; Martins,Renato; Alves,Roberto. In order to estimate the water quality of São Pedro stream, through distribution and composition of Chironomidae larvae present in the sediment four sampling sites were selected. In each sampling site, three sediment samples were collected within a period of twelve months using the Petersen (0.0189 m²) and the van Veen (0.0518 m²) dredges. Samples were washed through a sieve with a 0.21 mm mesh and the collected organisms were sorted in transparent trays, with a light shine being reflected into the tray. The sites located in the greatest urban mesh showed high densities of the genus Chironomus and lower values for diversity, uniformity and taxa richness, in relation to sites located in a less urbanized area. A significant difference in density of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chironomus; Organic pollution; Environmental alteration. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600004 Non indigenous ascidians in port and natural environments in a tropical Brazilian bay Rev. Bras. Zool. Marins,Flávia O.; Novaes,Roberto L. M.; Rocha,Rosana M.; Junqueira,Andrea O. R.. Despite limited natural dispersal, some species of ascidians can be transported vast distances via oceanic petroleum platforms, ship hulls and ballast water and therefore may be good indicators of bioinvasion. Usually non indigenous species (NIS) are abundant in harbors. This is caused in part because of the higher propagule delivery rate in these areas. An alternative explanation of why invasion is enhanced in harbor and marinas is that environmental degradation commonly found in these habitats favors the establishment of NIS. Most surveys for introduced species were not comprehensive and targeted mainly ports and marinas. Angra dos Reis is an excellent system that provides an opportunity to compare the potential distribution of introduced and native... Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial substrate; Bioinvasion; Exotic species; Organic pollution; Tunicata. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200009 Occurrence of Hirudinea species in a post urban reach of a Patagonian mountain stream Iheringia, Sér. Zool. Miserendino,M. Laura; Gullo,Bettina S.. Temporal (May 2005 to February 2006) and habitat distribution (pools and riffles) of Hirudinea species was analyzed at a post urban reach from Esquel stream (Chubut province, Patagonia, Argentina). Site was located 5.7 km downstream a Waste Treatment Plant. Mean values of nutrients: ammonia, nitrates and soluble reactive phosphate, as well water conductivity, turbidity and total suspended solids indicated physical and organic pollution. Leeches assemblage was composed by the glossiphonids: Helobdella scutifera Blanchard, 1900, H. michaelseni (Blanchard, 1900), H. simplex (Moore, 1911), Helobdella sp., H. hyalina Ringuelet, 1942, H. obscura Ringuelet, 1942 and the semiscolecid Patagoniobdella variabilis (Blanchard, 1900). From these H. hyalina and H.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Leeches; Assemblages; Streams; Urbanization; Organic pollution. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000300006 Registros recuperados: 5 Primeira ... 1 ... Última

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