Results 41 to 50 of about 4,281 (217)

Archaeology and geo component.

open access: yesRevista do Museu de Arqueologia e Etnologia, 1999
Relations among archaeology, geography, geomorphology and geology, defined as “geo component”, are emphatized in this article. Archaeological investigations in Paranapanema River Basin (Paranapanema Project), São Paulo State, reinforces this ...
José Luiz de Morais
doaj   +1 more source

Posição trófica de peixes exploradores de fundo na planície de inundação do Alto Rio Paraná [PDF]

open access: yes, 2009
The δ15N composition of bottom-feeding fish (iliophagous = Apareiodon affinis, Cyphocharax nagelii, Prochilodus lineatus, Steindachnerina brevipinna and S.
BENEDITO, E.   +2 more
core   +1 more source

The fish fauna in the fish passage at the Ourinhos Dam, Paranapanema River [PDF]

open access: yesNeotropical Ichthyology, 2012
The composition and abundance of the fish assemblage were evaluated in the fish ladder of Ourinhos Dam, the newest dam (closed in 2005) in the cascade of dams constructed on the Paranapanema River. Samplings were carried out three times on a diel cycle, in three sampling periods, two in the warm season and one in the cold season of 2008 - 2009.
Arcifa, Marlene Sofia   +1 more
openaire   +4 more sources

Environmental photochemical fate of pesticides ametryn and imidacloprid in surface water (Paranapanema River, São Paulo, Brazil)

open access: yesEnvironmental Science and Pollution Research, 2022
In addition to direct photolysis studies, in this work the second-order reaction rate constants of pesticides imidacloprid (IMD) and ametryn (AMT) with hydroxyl radicals (HO●), singlet oxygen (1O2), and triplet excited states of chromophoric dissolved organic matter (3CDOM*) were determined by kinetic competition under sunlight.
Rocha, Carolina Mendes   +3 more
openaire   +3 more sources

Molecular identification of Cichla (Perciformes: Cichlidae) introduced in reservoirs in Southern Brazil - doi: 10.4025/actascibiolsci.v35i2.10684

open access: yesActa Scientiarum: Biological Sciences, 2012
Species of peacock bass were introduced in several watersheds in South America and worldwide, mainly due to its importance to sport fishing, by being a fighting fish.
Boris Briñez   +4 more
doaj   +1 more source

Planktonic diatoms in lotic and lentic environments in the Lago dos Tigres hydrologic system (Britânia, Goiás, Brazil) : Coscinodiscophyceae and Fragilariophyceae [PDF]

open access: yes, 2012
Coscinodiscophyceae and Fragilariophyceae). A floristic study of Coscinodiscophyceae and Fragilariophyceae in the Lago dos Tigres hydrologic system is presented.
Nogueira, Ina de Souza   +2 more
core   +2 more sources

Aquatic macrophytes as feeding site for small fishes in the Rosana Reservoir, Paranapanema River, Southeastern Brazil [PDF]

open access: yesBrazilian Journal of Biology, 2003
In the present investigation we studied the feeding habits of the fishes associated with aquatic macrophytes in the Rosana Reservoir, southeastern Brazil. Twenty fish species were collected during four field trips, regularly distributed across the dry and wet seasons. Focal snorkeling observations of the fishes were made over a total of six hours. Nine
Casatti, L.   +2 more
openaire   +7 more sources

Benthic macroinvertebrates in the Paranapanema reservoir cascade (southeast Brazil) Macroinvertebrados bentônicos dos reservatórios em cascata do rio Paranapanema (sudeste, Brasil)

open access: yesBrazilian Journal of Biology, 2008
In this study, the composition, specific richness and abundance of benthic macroinvertebrates (
A. Jorcin, MG. Nogueira
doaj   +1 more source

Microsatellite analysis of pacu broodstocks used in the stocking program of Paranapanema River, Brazil [PDF]

open access: yesScientia Agricola, 2011
Monitoring the genetic diversity has fundamental importance for fish stocking programs. This experiment aims to evaluate the genetic diversity in two hatchery stations (A and B) with pacu Piaractus mesopotamicus (Holmberg, 1887) in Andirá, state of Paraná, Brazil used in stocking programs of Paranapanema River.
Povh, Jayme Aparecido   +6 more
openaire   +4 more sources

The response of neotropical dragonflies (Insecta: Odonata) to local and regional abiotic factors in small streams of the Amazon [PDF]

open access: yes, 2019
Since the relative role of local and regional abiotic factors on the Odonata diversity in rainforest streams is still poorly understood, we evaluated the effects of these factors on adult Odonata (Insecta) from preserved and altered streams in the ...
Belle   +20 more
core   +1 more source

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