Results 81 to 90 of about 2,221,022 (270)

A new species of the catfish genus Centromochlus (Siluriformes: Auchenipteridae: Centromochlinae) from the upper rio Paraná basin, Brazil

open access: yes, 2015
Centromochlus comprises twelve species, distributed in the main inland watersheds of South America, including the Orinoco, Essequibo, coastal rivers of Suriname, Amazon, upper Parana and Sao Francisco basins.
L. M. Sarmento-Soares, J. Birindelli
semanticscholar   +1 more source

Assessing the Health Impacts of Contaminants on Green Turtles (Chelonia mydas) Along the Southern Coast of Brazil

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Chemical pollutants pose a significant threat to marine ecosystems. Among these contaminants are trace elements and polycyclic aromatic hydrocarbons (PAH). Green turtles can be employed to evaluate the oceans' health due to their coastal habitats and exposure to multiple threats.
Camila Roberta da Silva Ribeiro   +6 more
wiley   +1 more source

Pontes e muralhas: diferença, lepra e tragédia (Paraná início do século XX) [PDF]

open access: yes, 2002
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em História.A presente pesquisa analisa discursos de deterioração identitária durante as primeiras décadas do século XX.
Olinto, Beatriz Anselmo
core  

Repercussões da política ambiental-territorial preservacionista sobre a comunidade tradicional Rio dos Patos - Guaraqueçaba - Paraná [PDF]

open access: yes, 2023
Orientadora: Daniele Regina PontesArtigo (Especialização) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Curso de Especialização em Direito AmbientalResumo: Esta pesquisa tem como objetivo discutir a relação entre normas e ações ...
Costa, Leticia Nunes da
core  

Antimicrobial Residues in a Key Cerrado River: Distribution, Persistence, and Effects on Zebrafish Embryo‐Larval Development

open access: yesEnvironmental 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

A serviço da pátria: o recrutamento militar na Província do Paraná durante a Guerra do Paraguai (1865 - 1870) [PDF]

open access: yes, 2011
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em História, Florianópolis, 2011.O presente trabalho busca estudar o processo de recrutamento militar na Província do ...
Brito, Edilson Pereira
core  

ESTIMATIVAS DE EROSIVIDADE E AS PRECIPITAÇÕES DIÁRIAS EXTREMAS NA BACIA HIDROGRÁFICA DO RIO ALTO IGUAÇU - PARANÁ [PDF]

open access: yes, 2019
Este artigo tem como objetivo estimar o potencial erosivo e avaliar a frequência e a intensidade das precipitações diárias na bacia hidrográfica do rio Alto Iguaçu, Paraná.
Terassi, Paulo Miguel de Bodas   +3 more
core   +1 more source

Two new species of Rineloricaria (Siluriformes: Loricariidae) from the rio Iguaçu basin, southern Brazil

open access: yesNeotropical Ichthyology
Rineloricaria langei and R. maacki, new species, are described from upper and middle regions of the rio Iguaçu basin, a left bank tributary of the rio Paraná basin, southern Brazil. Rineloricaria langei has narrow body and is similar to R.
Leonardo F. S. Ingenito   +3 more
doaj   +1 more source

Genetic structuring of Salminus hilarii Valenciennes, 1850 (Teleostei: Characiformes) in the rio Paraná basin as revealed by microsatellite and mitochondrial DNA markers

open access: yes, 2015
Genetic variation of Salminus hilarii was assessed by screening microsatellite loci and mitochondrial D-loop DNA across four sampling in the upper rio Parana basin of Brazil.
Juliana Viana da Silva   +3 more
semanticscholar   +1 more source

Ecotoxicological Assessment of Mercury in Fish From a Gold‐Mining‐Impacted Amazonian River: Biomonitoring and Human Health Risk

open access: yesEnvironmental 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

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