Results 61 to 70 of about 7,350 (178)

New records of Aspidoras fuscoguttatus Nijssen & Isbrücker, 1976 (Callichthyidae, Corydoradinae) from the São Francisco river basin, Brazil

, 2023
Aspidoras fuscoguttatus Nijssen & Isbrücker, 1976 is a small, relatively common armored catfish considered endemic to the upper Paraná river basin. Here, based on recent collections, as well as morphological and molecular evidence, the known geographic ...
Ossa-Guerra,Luz Elena De la, Hauer,Adriano, Freitas, Matheus Oliveira, Freitas,Matheus Oliveira, Moura,Rodrigo Leão de, Moura, Rodrigo Le\ue3o de, Abilhoa, Vin\uedcius, Dalcin, Roger Henrique, Artoni, Roberto Ferreira., Hauer, Adriano, Ossa-Guerra, Luz Elena De La, Abilhoa,Vinicius, Dalcin,Roger, Ferreira Artoni,Roberto   +13 more
core   +1 more source

Morphological development of Anchoviella vaillanti (Steindachner, 1908) (Clupeiformes: Engraulidae) larvae and early juveniles

Neotropical Ichthyology
The considerable similarity in the early life stages of different fish species makes egg and larvae identification in fishery biology and ichthyoplankton surveys a difficult task.
Anailza Cristina G. da Silva, William Severi, Maviael F. de Castro   +2 more
doaj   +1 more source

Beta diversity of macroinvertebrate assemblages associated with aquatic macrophytes in shallow lakes within a tropical floodplain-dammed river [PDF]

Acta Limnologica Brasiliensia
: Aims We assessed the beta diversity of macroinvertebrates associated with aquatic macrophytes in a dam-regulated river floodplain. We tested two hypotheses: (1) macroinvertebrates associated with aquatic macrophytes have higher beta diversity (higher ...
Marcos Callisto, Ricardo Solar, Daiana dos Reis Pelegrine, Marden Seabra Linares   +3 more
doaj   +1 more source

Up scaling table grape water requirements in the Low-Middle São Francisco river basin, Brazil

, 2014
Landsat satellite images and a net of 15 agro-meteorological stations were used together for determining actual evapotranspiration (ET) and crop coefficient (Kc) of table grapes on a large scale in the Low-Middle São Francisco river basin.
Lopes, H. L., Hernandez, F. B.T. [UNESP], De, A. H.   +2 more
core   +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

Políticas públicas de poverty alleviation e a transposição do Rio são Francisco: a quem serve a transposição do Rio São Francisco?

, 2013
Dissertação apresentada à Coordenadoria de Pós-Graduação e Pesquisa, no Mestrado Profissional em Gestão de Políticas Públicas e Segurança Social, como requisito para a obtenção do Título de Mestre em Gestão de Políticas Públicas.Essa dissertação ...
Pagano, Luciana Maria Palma
core  

Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity

PLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1345-1356, July 2026.
The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha, Anselmo Nogueira, Matheus Colli‐Silva, Juliana Gastaldello Rando   +3 more
wiley   +1 more source

O gênero Cosmarium Corda ex Ralfs (Desmidiaceae) no reservatório de Itaipu, PR, Brasil

Hoehnea
O trabalho objetivou o levantamento florístico do gênero Cosmarium em um tributário do Reservatório de Itaipu, na região Oeste do Paraná. Foram coletadas amostras mensais da comunidade biológica em cinco estações de amostragem na região limnética do ...
Viviane Costa de Menezes, Norma Catarina Bueno, Jascieli Carla Bortolini, Stefania Biolo, Natália Silveira Siqueira   +4 more
doaj   +1 more source

Transposition of the São Francisco River: causes and consequences of a project / Transposição do rio São Francisco: causas e consequências de um projeto

Diversitas Journal, 2017
: The transposition of the São Francisco river is a project of integration of its hydrographic basin with those of the Northeast, involving the states of Ceará, Paraíba, Rio Grande do Norte and Pernambuco in a process of water synergy, benefiting ...
Maria Goretti Sabino Cordeiro
doaj   +1 more source

Food Price Crises and the Insulation of Domestic Grain Markets

Agricultural Economics, Volume 57, Issue 4, July 2026.
ABSTRACT Studies that analyze the transmission of food prices from international to domestic markets for large sets of countries and products assume that price relationships are time‐invariant. However, studies that look in detail at individual countries and products show that countries respond to increasing international food prices with measures that
Clemens Hoffmann, Lina Kastens, Alberto Portugal‐Perez, Stephan von Cramon‐Taubadel   +3 more
wiley   +1 more source