Results 41 to 50 of about 10,896 (114)

Aquatic macrophytes of Itaipu Reservoir, Brazil: survey of species and ecological considerations

Brazilian Archives of Biology and Technology, 1999
In a survey of the aquatic macrophytes of the Itaipu Reservoir, we identified 62 taxa in 25 families and 42 genera. The highest number taxa was observed for the emergent macrophytes (40 taxa).
Sidinei Magela Thomaz, Luis Maurício Bini, Maria Conceição de Souza, Kazue Kawakita Kita, Antonio Fernando Monteiro Camargo   +4 more
doaj   +1 more source

Limnological variables and nutritional content of submerged aquatic macrophytes in a tropical lagoon Variáveis limnológicas e conteúdo nutricional de macrófitas aquáticas submersas em uma lagoa tropical

Acta Limnologica Brasiliensia, 2010
AIM: The aim of this study was to evaluate elemental composition (C, N and P) and carbohydrate and lipids content of aquatic macrophytes Egeria densa, Ceratophyllum demersum and Najas marina found in a lagoon of Norte Fluminense and relate these data to ...
Bruno dos Santos Esteves, Marina Satika Suzuki   +1 more
doaj   +1 more source

Long-Term Habitat Degradation Drives Neotropical Macrophyte Species Loss While Assisting the Spread of Invasive Plant Species

Frontiers in Ecology and Evolution, 2019
The spread of invasive macrophyte species is a pressing threat to neotropical shallow lakes. Yet there are few studies addressing the full extent of biotic and abiotic changes that may occur in response to invasive species.
Jorge Salgado, Jorge Salgado, María I. Vélez, Laura C. Caceres-Torres, Jose A. Villegas-Ibagon, Laura C. Bernal-Gonzalez, Laura Lopera-Congote, N. Melissa Martinez-Medina, Catalina González-Arango   +8 more
doaj   +1 more source

Influência da turbidez da água do rio Tietê na ocorrência de plantas aquáticas Influence of Rio Tiete water turbidity on the occurrence of aquatic plants

Planta Daninha, 2005
As plantas aquáticas são estudadas como um efeito do desequilíbrio causado pela poluição e/ou alagamento dos rios. A quantidade excessiva de plantas, conseqüente desse desequilíbrio, dificulta a navegação e a produção de energia elétrica.
F.T. Carvalho, E.D. Velini, A.L. Cavenaghi, E. Negrisoli, R.M. Castro   +4 more
doaj   +1 more source

The invasive aquatic macrophyte Hydrilla verticillata facilitates the establishment of the invasive mussel Limnoperna fortunei in Neotropical reservoirs

Journal of Limnology, 2014
The effects of introduced species on native species have been widely studied, however, invader-invader interactions are still poorly explored. Two non-native invasive species, the bivalve Limnoperna fortunei and the submersed macrophyte Hydrilla ...
Thaisa S. Michelan, Márcio J. Silveira, Danielle K. Petsch, Gisele D. Pinha, Sidinei M. Thomaz   +4 more
doaj   +1 more source

Caracterização da qualidade de água e sedimento relacionados com a ocorrência de plantas aquáticas em cinco reservatórios da bacia do rio Tietê Caracterization of water quality and sediment related to the occurrence of aquatic plants in five Tietê waterhed reservoirs

Planta Daninha, 2003
Este trabalho é parte integrante de um projeto de pesquisa que tem por objetivo o desenvolvimento de programas de manejo integrado de plantas aquáticas em cinco reservatórios da bacia do rio Tietê, usados na produção de energia elétrica.
A.L. Cavenaghi, E.D. Velini, M.L.B.T. Galo, F.T. Carvalho, E. Negrisoli, M.L.B. Trindade, J.L.A. Simionato   +6 more
doaj   +1 more source

A simple method to estimate spatial complexity in aquatic plants

Brazilian Archives of Biology and Technology, 2006
We used a computerized approach to measure spatial complexity for the structural habitat provided by eight aquatic plant species collected from backwater lagoons located in the Upper Paraná River floodplain, Brazil.
Eric David Dibble, Sidinei Magela Thomaz
doaj   +1 more source

Aquatic Insects Associated with Submerged Macrophytes with Different Morphological Complexities

Revista Brasileira Multidisciplinar - ReBraM /Brazilian Multidisciplinay Journal, 2013
The aim of the study was to analyze the diversity and community structure of aquatic insects associated with species of submersed macrophytes with different morphological complexity in relation to leaf structure.
Douglas F Peiró, Hugo H Saulino, Guilherme Rossi Gorni, Juliano José Corbi, Adrie Pool Vante, Gabriele Amaral   +5 more
doaj   +1 more source

Flora do Rio de Janeiro: Hydrocharitaceae

Rodriguésia
Resumo A família Hydrocharitaceae é cosmopolita; composta por 17 gêneros e 127 espécies. São ervas aquáticas fixas ou livres, flutuantes, submersas ou emersas, em água doce, salobra ou salgada. No Brasil ocorrem seis gêneros e cerca de 15 espécies. A fim
Arthur Rodrigues Lourenço, Claudia Petean Bove   +1 more
doaj   +1 more source

Inorganic carbon shortage may limit the development of submersed macrophytes in habitats of the Paraná River basin Baixas concentrações de carbono inorgânico podem limitar o desenvolvimento de macrófitas submersas em habitats do alto rio Paraná

Acta Limnologica Brasiliensia, 2011
AIM: In this investigation we carried out an experiment to assess whether the growth of Egeria najas and E. densa (two rooted submersed Hydrocharitacea, native to South America) are limited by inorganic carbon or not; METHODS: We measured the early plant
Aline de Freitas, Sidinei Magela Thomaz
doaj   +1 more source