Results 91 to 100 of about 10,896 (114)
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Aquatic Botany, 2004
Abstract The ability of two submerged freshwater macrophyte species, Egeria najas Planchon and Egeria densa Planchon to use HCO 3 − as a source of inorganic carbon for photosynthesis was assessed by a pH drift experiment. The pH values and different HCO 3 − concentrations were set up at the beginning of the experiments, in low and high ...
S. Pierini, S. Thomaz
semanticscholar +2 more sources
Abstract The ability of two submerged freshwater macrophyte species, Egeria najas Planchon and Egeria densa Planchon to use HCO 3 − as a source of inorganic carbon for photosynthesis was assessed by a pH drift experiment. The pH values and different HCO 3 − concentrations were set up at the beginning of the experiments, in low and high ...
S. Pierini, S. Thomaz
semanticscholar +2 more sources
Diferenciação entre Egeria densa e Egeria najas pelos caracteres anatômicos foliares [PDF]
Planta Daninha, 2006 Dentre as plantas daninhas aquáticas imersas de maior importância nos reservatórios de usinas hidrelétricas e em represas de pequeno porte no Brasil, destacam-se as espécies Egeria densa e Egeria najas, cuja identificação pode ser difícil na fase vegetativa. O objetivo deste trabalho foi diferenciar cinco acessos de E. densa e três de E.
Dagoberto Martins +2 more
exaly +6 more sources
The first record of an alien aquatic plant, Egeria najas Planch. (Hydrocharitaceae), in Malaysia
SpecimenA. Efremov
semanticscholar +2 more sources
Aquatic Botany, 2021
Abstract The invasion success of non-native species depends on a variety of factors, and abiotic characteristics of invasive ranges and their native populations can offer resistance to non-native species establishment. Reservoirs, compared to natural lakes, can facilitate submerged macrophyte invasion because they provide favorable abiotic conditions
Fernanda Moreira Florêncio +4 more
semanticscholar +2 more sources
Abstract The invasion success of non-native species depends on a variety of factors, and abiotic characteristics of invasive ranges and their native populations can offer resistance to non-native species establishment. Reservoirs, compared to natural lakes, can facilitate submerged macrophyte invasion because they provide favorable abiotic conditions
Fernanda Moreira Florêncio +4 more
semanticscholar +2 more sources
Limnology, 2010
The limnological effects resulting from the metabolism of Egeria najas Planchon (Hydrocharitaceae) were evaluated in the arms of the Itaipu Reservoir (Brazil). Due to local population decline in biomass and coverage, decomposition was the main process that accounted for the observed limnological changes.
L. M. Bini, S. Thomaz, P. Carvalho
semanticscholar +2 more sources
The limnological effects resulting from the metabolism of Egeria najas Planchon (Hydrocharitaceae) were evaluated in the arms of the Itaipu Reservoir (Brazil). Due to local population decline in biomass and coverage, decomposition was the main process that accounted for the observed limnological changes.
L. M. Bini, S. Thomaz, P. Carvalho
semanticscholar +2 more sources
Effects of temperature on decomposition of a potential nuisance species: the submerged aquatic macrophyte Egeria najas planchom (Hydrocharitaceae) [PDF]
Brazilian Journal of Biology, 2005 Decomposition of aquatic plants is influenced by several biotic and abiotic factors. Among them, temperature plays an important role. Despite the increasing number of studies describing the effects of temperature on the decomposition of aquatic macrophytes, little attention has been given to the decay of submerged macrophytes.
Priscilla Carvalho, Luis Mauricio Bini
exaly +6 more sources
Aquatic Botany, 2010
Abstract Egeria najas Planch. is the dominant native submersed macrophyte of the Upper Parana River in Brazil, while Hydrilla verticillata (L.f.) Royle has recently invaded this area. From January 2006 to December 2007, comprising two annual flood cycles, we conducted monthly surveys at two river stations and two lakes connected to the river ...
W. Sousa, S. Thomaz, K. Murphy
semanticscholar +2 more sources
Abstract Egeria najas Planch. is the dominant native submersed macrophyte of the Upper Parana River in Brazil, while Hydrilla verticillata (L.f.) Royle has recently invaded this area. From January 2006 to December 2007, comprising two annual flood cycles, we conducted monthly surveys at two river stations and two lakes connected to the river ...
W. Sousa, S. Thomaz, K. Murphy
semanticscholar +2 more sources
Hydrobiologia, 2009
The Upper River Parana Floodplain System comprises the rivers Ivinheima, Baia and Parana, which with their associated waterbodies form three subsystems, each showing individual characteristics. Hydrilla verticillata recently invaded the Upper Parana Floodplain, while Egeria najas is the native most abundant submersed macrophyte.
W. Sousa +4 more
semanticscholar +2 more sources
The Upper River Parana Floodplain System comprises the rivers Ivinheima, Baia and Parana, which with their associated waterbodies form three subsystems, each showing individual characteristics. Hydrilla verticillata recently invaded the Upper Parana Floodplain, while Egeria najas is the native most abundant submersed macrophyte.
W. Sousa +4 more
semanticscholar +2 more sources
Efeito do período de exposição a concentrações de diquat no controle de plantas de Egeria densa, Egeria najas e Ceratophyllum demersum [PDF]
Planta Daninha, 2008 O período de permanência do herbicida na água pode ser influenciado pelo fluxo da água nos reservatórios e pela adsorção a partículas de argilas em suspensão, bem como pela degradação luminosa e por microrganismos. Objetivou-se com este trabalho avaliar diferentes períodos de exposição a concentrações do herbicida diquat no controle de Egeria densa ...
Dagoberto Martins +2 more
exaly +6 more sources