Results 41 to 50 of about 1,581,105 (192)
International Journal of Climatology, EarlyView.Observed trends and EC‐Earth3 climate model projections demonstrate expressive changes in the Southeast Atlantic Hydrographic Basin, Brazil. Significant increases in rainfall intensity and dry spell duration in the present climate are followed by projected amplification of extreme precipitation under future warming, particularly under the SSP5‐8.5 ...
Pedro Lucas Oliveira‐Santos +4 more
wiley +1 more source
Navegação, cataratas e hidrelétricas: discursos e representações sobre o Rio Iguaçu (Paraná, 1853-1969) [PDF]
, 2012 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-graduação em História, Florianópolis, 2011Esta tese discute como as várias mudanças nas práticas discursivas constituíram diferentes ...
Karpinski, Cezar
core
Acta Scientiarum: Biological Sciences, 2012 Characidae is the largest and more diversified family from Characiformes and presents several classification problems, with several genera currently allocated as incertae sedis, such as the genus Hemigrammus.
Thiago Cintra Maniglia +5 more
doaj +1 more source
First record of Pithophora oedogonia (Montagne) Wittrock (Pithophoraceae) in the Upper Paraná River floodplain, Brazil [PDF]
Check List, 2015 Pithophora is the only genus recorded of the Pithophoraceae family in Brazil. Pithophora specimens were found close to banks of Hydrilla verticillata (L.F.) Royle in the Upper Paraná River floodplain.
Vanessa Algarte +3 more
doaj +3 more sources
Revista Brasileira de Geomorfologia, 2023 Confluences are places of complex interaction of flow and sediments coming from different channels. Studies at large confluences have advanced the understanding of these environments on a larger scale.
Altair Bennert +3 more
doaj +1 more source
The most threatened plants receive the least scientific attention
PLANTS, PEOPLE, PLANET, EarlyView.Plants sustain all life, providing the energetic and structural basis of ecosystems, but they face a growing risk of extinction. Reversing this decline requires an understanding of how scientific knowledge is distributed among species, and identification of the biases and gaps that hinder effective responses to the threats they face. However, we reveal
Renon S. Andrade +3 more
wiley +1 more source
ENVIRONMENTAL FRAGILITY OF THE IRAÍ RIVER BASIN – WATER SUPPLY SOURCE FOR CURITIBA, PARANÁ [PDF]
, 2021 This research aimed to compare two methods of determining the environmental fragility of a vital source in the region of Curitiba, Paraná, the Iraí river basin.
Marcon, Amanda Köche +5 more
core +1 more source
Acta Scientiarum: Biological Sciences, 2017 The construction of the Itaipu Hydroelectric Power Plant in 1982 led to the formation of a reservoir, which, in turn, leveled the waters of the Paraná River by flooding the geographic barrier Salto de Sete Quedas.
Gabriele Sauthier Romano de Melo +2 more
doaj +1 more source
Environmental Toxicology, EarlyView.ABSTRACT The current study aimed to quantify the antimicrobials amoxicillin (AMX), cefazolin (CFZ), chloramphenicol (CHL), metronidazole (MTZ), and sulfamethoxazole (SX) in effluents and surface water of an important Cerrado river, calculate their half‐lives, and analyze their ecotoxicity following single and combined exposures.
Náthala Maria Simão +12 more
wiley +1 more source
Environmental Toxicology, EarlyView.ABSTRACT The Peixoto de Azevedo River, located in northern Mato Grosso, southern Brazilian Amazon, has a long history of artisanal and small‐scale gold mining (ASGM). This study evaluated total mercury (THg) concentrations in fish tissues to assess biomagnification and potential risks.
Augusto Cesar da Costa Castilho +5 more
wiley +1 more source