Results 11 to 20 of about 47,996 (245)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+7 more sources

CALCULATING BEDLOAD TRANSPORT IN RIVERS: CONCEPTS, CALCULUS ROUTINES AND APPLICATION

open access: yesRevista Brasileira de Geomorfologia, 2017
Rivers are immensely important to human activities such as water supply, navigation, energy generation, and agriculture. They are also an important morphodynamic agent of erosion, transport and deposition.
Hudson de Azevedo Macedo   +6 more
doaj   +1 more source

Variability of the chemical index of alteration (CIA) in the Paraná River suspended load [PDF]

open access: yes, 1998
Variability of the chemical index of alteration (CIA) in the Paraná River suspended ...
Depetris, Pedro J., Probst, Jean-Luc
core   +1 more source

Occurrence and toxicity of Microcystis aeruginosa (Cyanobacteria) in the Paraná River, downstream of the Yacyretá dam (Argentina) [PDF]

open access: yes, 2016
Cyanobacteria constitute the main toxin producers in inland water ecosystems and have extensive global distribution. The presence of hepatotoxins in aquatic environments is hazardous to human and animal health; even though the presence and identification
Andrinolo, Dario   +3 more
core   +3 more sources

Phytophilous cladocerans (Crustacea, Anomopoda and Ctenopoda) from Paranã River Valley, Goiás, Brazil [PDF]

open access: yesRevista Brasileira de Zoologia, 2007
A rapid assessment survey identified 39 phytophilous cladocerans species from littoral zones of rivers, permanent and temporary lagoons, and swamps of the Paranã River Valley, Goiás, Brazil, 22 are registered for the first time in Central Brazil. Aspects of the taxonomy of some of these species are discussed.
openaire   +3 more sources

Reproduction of invasive Loricariichthys platymetopon Isbrücker & Nijssen, 1979 (Actinopterygii, Loricariidae) on the upper Paraná River floodplain

open access: yesBiotemas, 2019
Loricariichthys platymetopon originally occurred in the Uruguay, Paraguay and lower Paraná rivers. With the formation of Itaipu Reservoir in 1982, it invaded and colonized the upper Paraná River.
Camila Antoniassi Cardim   +3 more
doaj   +1 more source

Revealing patterns of endemism in the transatlantic family Chelodesmidae (Polydesmida: Diplopoda). [PDF]

open access: yesCladistics
Abstract With fossil records dating back to the Silurian/Late Ordovician, millipedes stand out as one of the earliest terrestrial animal groups. Their limited vagility and high endemism make them valuable tools for formulating and testing biogeographic hypotheses, including those related to macro‐vicariance events.
Bouzan RS   +4 more
europepmc   +2 more sources

Genetic diversity of the forage peanut in the Jequitinhonha, São Francisco, and Paranã River valleys of Brazil

open access: yesGenetics and Molecular Research, 2016
Arachis pintoi and A. repens are legumes with a high forage value that are used to feed ruminants in consortium systems. Not only do they increase the persistence and quality of pastures, they are also used for ornamental and green cover. The objective of this study was to analyze microsatellite markers in order to access the genetic diversity of 65 ...
H S F S, Azêvedo   +8 more
openaire   +2 more sources

The Fluvial Forests as Indicators of the Flow and Permanence of Water [PDF]

open access: yes, 2018
We evaluated the influence of the horizontal flows of the Paraná River on the composition and distribution of the floodplain landscape and we defined the ecohydrologicalsignature of some species-index in the low Paraná River section, (27° 38? 04?
Casco, Sylvina Lorena   +2 more
core   +1 more source

Enzymatic distance in two species of the genus Pimelodella (Siluriformes, Heptateridae) from the Upper Paraná River basin, Paraná State, Brazil

open access: yesActa Scientiarum: Biological Sciences, 2023
Species of the genus Pimelodella (Eigenmann & Eigenmann, 1988) present many similar morphological characteristics, which makes taxonomic identification difficult.
Fabiana Castelani Andreotti Vianna   +7 more
doaj   +1 more source

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