Hydrographic Basins
Mostrando 1-12 de 91 artigos, teses e dissertações.
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1. Breaking the misconception of a dry and lifeless semiarid region: the diversity and distribution of aquatic flora in wetlands of the Brazilian Northeast
ABSTRACT The semiarid region of northeastern Brazil possesses a set of wetlands characterized by hydrographic basins with deficient drainage networks, a few large and permanent lotic systems and several permanent and temporary lagoons. Aquatic plants are widely distributed in these wetlands and the present study aims to determine if those of Ceará state hav
Acta Bot. Bras.. Publicado em: 2021-03
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2. Molecular characterization and genetic relationships of seven piranha species of the genera Serrasalmus and Pygocentrus (Characiformes: Serrasalmidae) from Paraná-Paraguay, São Francisco and Tocantins River basins in Brazil
Resumo Relações genéticas e filogenéticas de sete espécies de piranhas dos gêneros Serrasalmus e Pygocentrus das bacias hidrográficas Paraná-Paraguai, São Francisco e Tocantins foram avaliadas com base em sequências parciais dos genes mitocondriais Citocromo b e Citocromo c Oxidase I. Foram realizadas análises filogenéticas de Máxima Verossimilh
Braz. J. Biol.. Publicado em: 25/11/2019
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3. Continental fishes from the Tambaba Environmentally Protected Area, Paraíba State, Brazil
Abstract Tambaba environmentally protected area is situated on the south coast of Paraíba State, within the Atlantic forest biome of the northeastern region in Brazil. The Tambaba environmentally protected area consists of a series of independent drainages: Graú, Mucatú, and Bucatú river micro-basins, and Caboclo River sub-basin that belongs to Gurugi Ri
Pap. Avulsos Zool.. Publicado em: 07/11/2019
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4. Considerações sobre o processo de enquadramento de corpos de água
RESUMO Previsto na Lei nº 9.433/97 e em legislações estaduais de recursos hídricos, o enquadramento de corpos de água segundo seus usos preponderantes tem sido aplicado em diversas bacias hidrográficas brasileiras. Por ser de uso relativamente recente, pairam muitas dúvidas em detalhes de sua efetiva aplicação. Isso posto, o presente trabalho aprese
Eng. Sanit. Ambient.. Publicado em: 30/05/2019
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5. Technical contributions to territorial planning and the use of ecosystemic services in a hydrographic basin with a water deficit in the Atlantic Rainforest of Brazil
Resumo A bacia do rio Dois Rios (R2R) (3.159 km²) recolhe os efeitos climáticos e ambientais típicos de zonas situadas a sotavento de cadeias montanhosas. Tem balanço hídrico deficitário, havendo poucos e específicos locais úmidos. Este estudo identifica, espacializa, caracteriza e agrupa as planícies de inundação com maior habilidade em produzir
Rev. Ambient. Água. Publicado em: 25/03/2019
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6. Gestión de cuencas metropolitanas. Un abordaje desde el proyecto de paisaje. Caso: Arroyo del Gato, Región Metropolitana de Buenos Aires
Resumo Historicamente, a gestão de bacias hidrográficas na Região Metropolitana de Buenos Aires (RMBA) carece de uma abordagem ambiental integral, em que rios e córregos sejam valorizados a partir de seu potencial ecológico e paisagístico. Nesse sentido, a ideia de paisagem, difundida desde o continente europeu para o início do século XXI, poderia c
urbe, Rev. Bras. Gest. Urbana. Publicado em: 21/02/2019
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7. Karyotype diversity between species of Crenicichla (Perciformes, Cichlidae) from different Brazilian hydrographic basins
Abstract Crenicichla is the largest genus in the Cichlidae family in South America. The genus includes 100 valid species that are popularly known in Brazil as jacundás or joaninhas and are widely distributed in rivers east of the Andes. Cytogenetic analyses were carried out on seven species in this genus. All species showed a diploid number of 48 with inter
Genet. Mol. Biol.. Publicado em: 18/02/2019
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8. Water Erosion in Oxisols under Coffee Cultivation
ABSTRACT Water erosion is one of the main environmental impacts of land use. When soil and water losses occur, nutrients essential for the growth and maintenance of plants are removed, with harmful outcomes on the sustainability of agriculture and the environment. In addition, they lead to other deleterious effects, such as sedimentation and eutrophication o
Rev. Bras. Ciênc. Solo. Publicado em: 02/07/2018
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9. Diversity of parasites in wild Astronotus ocellatus (Perciformes, Cichlidae), an ornamental and food fish in Brazil
ABSTRACT The community composition of parasites was characterized in Astronotus ocellatus from a tributary of the Amazon River, northern Brazil. The prevalence was 87.9%, and a total of 526,052 parasites were collected, with a mean of 15,941 parasites per host. Nine taxa of ecto- and endo-parasites were identified, but Ichthyophthirius multifiliis was the do
An. Acad. Bras. Ciênc.. Publicado em: 16/10/2017
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10. An Innovative Vessel for Research Studies at Amazon as a Potential Support for Sustainable Development and Conservation of the Region
This study proposes an innovative and demonstrably necessary vessel intended for the research and logistic support of scientific or non-scientific activities in the Amazon, designed in accordance with the environmental and geographical requirements and characteristics of the region (possibly applicable to other similar hydrographic basins). The study also de
Braz. arch. biol. technol.. Publicado em: 2014-12
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11. Genetic diversity and population structure of bocachico Prochilodus magdalenae (Pisces, Prochilodontidae) in the Magdalena River basin and its tributaries, Colombia
Prochilodus magdalenae is an endemic freshwater fish that occurs in the Magdalena, Sinú and Atrato hydrographic basins. It has an important economic role and is a food resource for the artisanal fishing communities. Its socioeconomic importance contrasts with the current status of its fisheries, where stocks are being depleted. Considering its importance an
Genet. Mol. Biol.. Publicado em: 2014
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12. New species and records of the genus Aegla Leach, 1820 (Crustacea, Anomura, Aeglidae) from the West-Central region of Rio Grande do Sul, Brazil
Aeglidae are anomuran freshwater "crabs" found only in southern South America. In Brazil, the greatest species diversity occurs in hydrographic basins of the state of Rio Grande do Sul. Two new species, Aegla georginae and Aegla ludwigi, are described from the Ibicuí and Ijuí Rivers, respectively (Uruguay River Basin). The new taxa can be distinguished fro
Nauplius. Publicado em: 2013-12