Results 11 to 20 of about 2,071 (88)

INSERÇÃO DE MUNICÍPIOS E BACIAS HIDROGRÁFICAS NO ESTADO DO RIO GRANDE DO SUL

Boletim Geográfico do Rio Grande do Sul, 2021
O Estado do Rio Grande do Sul possui 25 bacias hidrográficas, divididas em três regiões de gerenciamento: Região Hidrográfica do Guaíba, do Litoral e do Uruguai.
Raíza Cristovão Schuster, Fernando Comerlato Scottá, Rafael Paranhos   +2 more
doaj  

Hydrogeochemistry typology and quality of groundwater in the urban area of municipality of Lençóis, Bahia, Brazilian northeast

Revista Águas Subterrâneas, 2017
The objective of this paper was to determine the types and quality of groundwater in fractured (metasedimentary) and granular aquifer in the urban area of the municipality of Lençóis, state of Bahia, Northeastern region of Brazil.
Jonatas Batista Mattos, Manoel Jerônimo Moreira Cruz, Francisco Carlos Fernandes De Paula, Elinaldo Fonseca Sales   +3 more
doaj   +1 more source

Bacias hidrográficas interminentes sazonais e potencialidades hidroambientais no nordeste setentrional brasileiro

Revista Geographia, 2014
As bacias hidrográficas no Trópico semiárido brasileiro, em grande maioria, drenam terras secas (áridas, semiáridas e subúmidas secas), formando características fisiográficas bem particulares, com dinâmica hidrológica que depende da renovação espaço ...
Flávio Rodrigues do Nascimento
doaj   +1 more source

Multiscale Environmental Drivers of Aquatic Insect Assemblages in Cerrado Streams

Austral Ecology, Volume 51, Issue 3, March 2026.
Multi‐scale drivers of aquatic insect communities in Cerrado streams. The gradient (from left to right) indicates increasing spatial scale, showing that abundance is influenced by local factors (conductivity, temperature), taxonomic richness responds to agricultural land use at an intermediate scale, and community composition is structured by regional ...
Juliana Simião‐Ferreira, Isabella Milhomem de Paiva Almeida, Victor Yuri da Silva Moreira, Hugo de Oliveira Barbosa, Daniel de Paiva Silva, Sara Lodi, Daniel Albeny‐Simões, Maisa Carvalho Vieira, Hasley Rodrigo Pereira, Bruno Spacek Godoy   +9 more
wiley   +1 more source

Qualidade da água superficial por meio de análise do componente principal [PDF]

Revista Ambiente & Água, 2015
Os fatores naturais e, em especial os antrópicos, que contribuem para a variação espacial e temporal da qualidade da água superficial nas bacias hidrográficas do município de Caxias do Sul foram determinados com uso de técnicas multivariadas de análise ...
Nícolas Reinaldo Finkler, Denise Peresin, Jardel Cocconi1, Taison Anderson Bortolin, Adivandro Rech, Vania Elisabete Schneider   +5 more
doaj   +1 more source

Tails of Biodiversity: Vertebrate Community Assessment in a Neotropical River Basin via eDNA Metabarcoding

Environmental DNA, Volume 8, Issue 1, January–February 2026.
This study used environmental DNA (eDNA) metabarcoding to assess vertebrate biodiversity in headwater streams of the Rio Santo Antônio basin, southeastern Brazil, a tributary of the Rio Doce. A total of 119 vertebrate OTUs were identified, with oxidation–reduction potential emerging as the strongest environmental predictor of species richness.
Larissa Moreira‐Silva, Rennan Garcias Moreira, Jim Perry, Walisson Kenedy‐Siqueira, Guilherme Costa Baião, Daniel Negreiros, Fernando Figueiredo Goulart, Josimar Daniel Gomes, Geraldo Wilson Fernandes   +8 more
wiley   +1 more source

AVALIAÇÃO DO INCREMENTO DE AÇUDES E SUA RELAÇÃO COM O USO DO SOLO, ATRAVÉS DO USO DE IMAGENS TM/LANDSAT-5: ESTUDO DE CASO

Revista Brasileira de Engenharia Agrícola e Ambiental, 1998
RESUMO O presente trabalho teve o objetivo de estudar as bacias hidrográficas dos açudes Pilões e São Gonçalo, na região do semi-árido do Estado da Paraíba, Brasil, para avaliar o incremento de açudes e sua relação com o uso da terra para os anos de 1984
Joedla Rodrigues de Lima, Marx Prestes Barbosa, José Dantas Neto   +2 more
doaj   +1 more source

Mapping ecological corridors in the Upper Paraguay River Basin, Brazil: Applications for sustainability, public policy and decision‐making

Conservation Science and Practice, Volume 7, Issue 7, July 2025.
We identified and mapped ecological corridors on a regional scale for the entire upper paragauai basin, which is one of the largest basins in Brazil. Our results were an extensive network of corridors across the basin, as well as identifying areas for better connectivity.
Maxwell da Rosa Oliveira, Adriana Maria Espinoza Fernando, André Restel Camilo, Guellity Marcel Fonseca Pereira, Thaishi Leonardo da Silva, Walfrido Moraes Tomas   +5 more
wiley   +1 more source

Age and growth of the porthole shovelnose catfish (Hemisorubim platyrhynchos) in the Pantanal

Brazilian Journal of Biology
The Porthole Shovelnose Catfish, Hemisorubim platyrhynchos, is the sixth largest pimelodidae of the Pantanal. Its age and growth were studied using pectoral fin-spines from fish collected in the Cuiabá river basin, Pantanal.
J. M. F. Penha, L. A. F. Mateus, G. Barbieri   +2 more
doaj   +1 more source

Toward effective river restoration in Brazil: a systematic review of current practices, regional disparities, and success metrics

Restoration Ecology, Volume 33, Issue 4, May 2025.
Freshwater ecosystems in Brazil face critical threats from urbanization, industrialization, and agricultural expansion, leading to biodiversity loss and diminished ecosystem services. Restoration efforts are essential, yet a systematic overview of their distribution, objectives, and success metrics is lacking.
Rafael H. Hordones, Iola G. Boëchat, Davi G. F. Cunha, Mario Brauns, Björn Gücker   +4 more
wiley   +1 more source