Results 31 to 40 of about 131 (94)

Flora do Ceará: Hydrocharitaceae e as fanerógamas marinhas: Cymodoceaceae, Ruppiaceae

open access: yesRodriguésia
Resumo As áreas inundadas continentais e a região costeira do estado do Ceará apresentam comunidades vegetais aquáticas constituídas por Angiospermas.
Lígia Queiroz Matias   +2 more
doaj   +1 more source

Levantamento da infestação de plantas aquáticas em Porto Primavera antes do enchimento final do reservatório Aquatic plant infestation assessment in Porto Primavera reservoir before final filling

open access: yesPlanta Daninha, 2009
O objetivo deste trabalho foi identificar as plantas aquáticas e os níveis de infestação de cada espécie em Porto Primavera antes do enchimento final do reservatório. Foram avaliados todos os focos de vegetação aquática no reservatório (72 pontos), sendo
D Martins   +4 more
doaj   +1 more source

Degradação de diquat em condições de caixa d'água com e sem plantas de egéria Diquat degradation under small-tank conditions with and without egeria plants

open access: yesPlanta Daninha, 2003
Dentre as plantas daninhas aquáticas submersas, o gênero Egeria é considerado um dos mais importantes de ocorrência nos reservatórios da região centro-sul do Brasil, pois acarreta prejuízos à geração de energia, pesca, navegação e recreação.
E. Negrisoli   +3 more
doaj   +1 more source

Efeito de concentrações de herbicidas sobre aspectos biológicos de Fusarium sp. (isolado FCAV#940) Effect of herbicide concentrations on biological aspects of Fusarium sp. (isolation FCAV#940)

open access: yesPlanta Daninha, 2004
O fungo Fusarium sp. (isolado FCAV#940) tem potencial de controle biológico das macrófitas aquáticas, Egeria najas e Egeria densa, plantas que causam prejuízos de diferentes naturezas em ambientes lacustres.
D. Mendes, R.A. Pitelli, L. Coelho
doaj   +1 more source

The effect of habitat and sediment type on the occurrence of non-native and native species of aquatic macrophyte in subtropical regions

open access: yesBioscience Journal, 2014
Non-native species of aquatic plants may become invasive and affect native communities, reducing the diversity of plants and other organisms. In general, the successful colonization of new habitats by macrophytes depends first on their dispersion ability
Márcio José Silveira
doaj   +3 more sources

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

open access: yesBrazilian 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   +4 more
doaj   +1 more source

Sensoriamento remoto hidroacústico no mapeamento de macrófitas aquáticas submersas Hydro-acoustic remote sensing in submerged aquatic macrophyte mapping

open access: yesPlanta Daninha, 2012
Macrófitas são importantes produtoras primárias do ecossistema aquático, e o desequilíbrio do ambiente pode ocasionar seu crescimento acelerado. Portanto, levantamentos de dados relacionados a macrófitas submersas são importantes para contribuir na ...
L.H.S. Rotta   +5 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

open access: yesActa 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   +1 more
doaj   +1 more source

Urban rain-fed lakes: macro-invertebrate assemblages associated with Egeria najas as indicators of biological integrity in wetlands of Corrientes Province (Argentina) [PDF]

open access: yesBiodiversity and Conservation, 2019
In northeast Corrientes Province, there are more than 50,000 semi-rounded shallow rain-fed lakes. Several lakes have been disturbed mainly because urbanization causes eutrophication due to the illegal discharge of wastewater. We compared 22 metrics based on the structural attributes of macro-invertebrates associated with Egeria najas across seasons ...
Gallardo, Luciana Irene   +2 more
openaire   +2 more sources

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

open access: yesFrontiers 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   +8 more
doaj   +1 more source

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