Results 71 to 80 of about 604,113 (275)

Five new species of genus Astyanax Baird & Girard, 1854 from Rio Iguaçu, Paraná, Brazil (Ostariophysi, Characiformes, Characidae)

Brazilian Journal of Biology
Five new species of the Neotropical characiform genus Astyanax Baird & Girard are described from Rio Iguaçu at the border of Paraná and Santa Catarina states, southeastern Brazil and Astyanax gymnogenis Eigenmann is redescribed.
JC. Garavello, FAA Sampaio
doaj   +1 more source

O uso das terras no sul do Brasil: uma análise a partir de indicadores de localização

Revista de Economia e Sociologia Rural, 2006
Esse artigo analisa o uso das terras no Paraná, Santa Catarina e Rio Grande do Sul, no período de 1975 a 1995, a partir da análise regional. Foram utilizados indicadores de localização e especialização tendo como variável a área em hectares ocupadas nos ...
Jandir Ferrera de Lima, Lucir Reinaldo Alves, Sandra Mara Pereira, Elvanio Costa de Souza, Paulo Roberto Joner, Adriano de Camargo, Éderson Junior Rodrigues, Pedro Eduardo P. de Andrade   +7 more
doaj   +1 more source

Establishing Reciprocity as A Dimension of Nonprofit Entrepreneurial Orientation

Nonprofit Management and Leadership, EarlyView.
ABSTRACT This study introduces and characterizes reciprocity as a distinct sixth dimension of entrepreneurial orientation (EO) within nonprofit organizations (NPOs), specifically Brazilian Medical Associations (BMAs). Through a qualitative exploratory study using 16 BMAs as units of analysis and data from 11 in‐depth interviews with nonprofit sector ...
Fabricio Martins Lacerda, Cristina Dai Prá Martens, Henrique Mello Rodrigues de Freitas   +2 more
wiley   +1 more source

Chromosomal analyses in Megalonema platanum (Siluriformes: Pimelodidae), an endangered species from South American rivers

Neotropical Ichthyology
This study presents chromosomal data of Megalonema platanum from rio Tibagi, Paraná, Brazil and from rio Paraná, Argentina. The diploid number was equal 54 with karyotype composition of 24m+16sm+2st+12a in both populations.
Rafael Augusto de Carvalho, Sebástian Sanchez, Ana Claudia Swarça, Alberto Sergio Fenocchio, Isabel C. Martins-Santos, Ana Lúcia Dias   +5 more
doaj   +1 more source

Taxonomic revision of Galeocharax (Characiformes: Characidae: Characinae)

Neotropical Ichthyology, 2017
The taxonomy of Galeocharax, a genus of freshwater fishes distributed in most South American cis-Andean river systems, except the rio Negro, rio São Francisco and rio Xingu basins and the eastern drainages of Brazil, is herein revised.
Victor Giovannetti, Mônica Toledo-Piza, Naércio A. Menezes   +2 more
doaj   +1 more source

Stratified sampling enhances the understanding of bat–fruit networks in the southern Atlantic Forest

Oikos, EarlyView.
Few studies have sought to understand the vertical patterns of bat–fruit systems, and therefore, it is not possible to evaluate whether interpretations based on data collected from a single stratum adequately represent the interaction patterns of this system. In this context, we evaluated the dissimilarity in the assemblage of frugivorous bats, plants,
Karolaine Porto Supi, Thais Bastos Zanata, Daniela Aparecida Savariz Bôlla, Fernando Carvalho   +3 more
wiley   +1 more source

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

Neotropical 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, Miriam S. Ghazzi, Luiz F. Duboc, Vinícius Abilhoa   +3 more
doaj   +1 more source

Mechanical, Thermal, and Microstructural Evaluation of Bio‐Based Polyurethane Composites Reinforced With Woven Jute and Flax

Polymer Composites, EarlyView.
Graphical overview of the manufacturing and characterization of bio‐based polyurethane composites reinforced with woven jute and flax fibers produced by the VARTM process. Mechanical, thermal, and microstructural analyses reveal differences in stiffness, thermal stability, and interfacial behavior between the natural fiber composites.
Vanessa A. Santos, Kelvin M. K. Iwasaki, Felipe Ruivo Fuga, Ricardo De Medeiros   +3 more
wiley   +1 more source

Description of two new species of Hisonotus Eigenmann & Eigenmann, 1889 (Ostariophysi, Loricariidae) from the rio Paraná-Paraguay basin, Brazil

ZooKeys, 2014
Two new species of Hisonotus are described from the rio Paraná-Paraguay basin in Brazil. The most remarkable features of the new species are the odontodes forming longitudinally aligned rows (one odontode after the other, but not necessarily forming ...
F. Roxo, C. H. Zawadzki, W. P. Troy
semanticscholar   +1 more source

Toxicity of aqueous extracts of Ilex paraguariensis A.St.‐Hil. about Euphorbia heterophylla L.

Pest Management Science, EarlyView.
Aqueous extracts of Ilex paraguariensis A.St.‐Hil. strongly inhibit Euphorbia heterophylla L. germination and early seedling growth, but show mild phytotoxicity on mature plants, paradoxically promoting biomass via antioxidants. Abstract BACKGROUND The escalating challenge of herbicide‐resistant weeds, exemplified by Euphorbia heterophylla L.
Tamara Alberton da Silva, Ikram Bashir, Ana Caroline Giacomin, Jéssica Adriane Barth, Marina Chiapperin, Fabieli Zanotelli de Oliveira, Camila Thaís Scheibler, Fernanda Bruxel, Elisete Maria de Freitas   +8 more
wiley   +1 more source