Results 11 to 20 of about 2,107 (88)

Caatinga diaspores: Descriptive overview of dispersal units of seasonally dry tropical forests and woodlands. [PDF]

Ecology
Abstract Dispersal unit characteristics provide crucial insights into species ecology and are essential for the conservation and restoration of ecosystems. The Caatinga, the largest ecosystem of seasonally dry tropical forests and woodlands in South America, remains underrepresented in terms of dispersal unit data, which are often scattered across the ...
da Silva FFS, Damasceno ES, de Souza Cavalcante RA, Alves do Nascimento F, Prates MB, Coelho LFM, Pifano DS, Rodrigues RG.   +7 more
europepmc   +2 more sources

Predicted impacts of proposed hydroelectric facilities on fish migration routes upstream from the Pantanal wetland (Brazil)

River Research and Applications, Volume 36, Issue 3, Page 452-464, March 2020., 2020
Abstract There are 104 hydroelectric facilities proposed to be installed in the watersheds that feed the Pantanal, a vast floodplain wetland located mostly in Brazil. The Pantanal is host to 23 long‐distance migratory fish species that ascend upland tributaries to spawn.
Marcel Medinas de Campos, Hans M. Tritico, Pierre Girard, Peter Zeilhofer, Stephen K. Hamilton, Ibraim Fantin‐Cruz   +5 more
wiley   +1 more source

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

Characterisation of Drought and Wet Events in the Paraíba do Sul River Basin—Brazil

International Journal of Climatology, Volume 46, Issue 9, July 2026.
Trend analysis identified statistically significant reductions in precipitation (at the 5% significance level) at specific pluviometric stations in São Paulo and Rio de Janeiro, while other areas, mainly in Minas Gerais, experienced significant increases in annual and seasonal rainfall, particularly during summer and spring. These significant trends at
Gildo Rafael de Almeida Santana, Eliane Barbosa Santos, Maria Gertrudes Alvarez Justi da Silva, Vicente de Paulo Santos de Oliveira, Jader Lugon Junior   +4 more
wiley   +1 more source

River conservation and restoration in croplands: can we improve the common agriculture policy as an instrument of practice?

Restoration Ecology, Volume 34, Issue S1, May 2026.
Abstract This study investigates the integration of river restoration with the Common Agricultural Policy (CAP), focusing on the differences between European Union (EU) and Portuguese documents regarding river restoration terms. A thematic content analysis highlights that despite the varying document sizes, the proportion of mentions related to river ...
Leonor Santos, Sebastian Birk, M. Teresa Ferreira   +2 more
wiley   +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

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

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

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