Results 51 to 60 of about 773 (174)
Journal of Fish Biology, Volume 108, Issue 4, Page 1170-1184, April 2026.Abstract Understanding complex migration patterns, including drivers of partial migration and habitat use, is challenging but essential for conservation, as it determines a species' adaptative capacity in the face of environmental change and anthropogenic threats.
Alexandre Peressin +6 more
wiley +1 more source
Itaipu na política externa brasileira dos governos Lula-Lugo
Revista Conjuntura AustralEm 2023, a renegociação do Anexo C do Tratado de Itaipu (1973) colocou as relações entre Brasil e o Paraguai em relevo na agenda política regional.
Tomaz Espósito Neto
doaj +5 more sources
Energies, 2023 The control systems for the variable-speed wind turbine based on the Doubly Fed Induction Generator (DFIG) pose some tuning challenges. The performance and stability of DFIG wind turbines during faults in power grids are directly related to their ...
Milton E. B. Aguilar +5 more
doaj +1 more source
Spatial Analysis of Piezometric Data - Itaipu Dam
EasyChair Preprints, 2018 The evaluation of the structural performance of Itaipu Dam involves, among other activities, the analysis of data from instruments installed at different points of the structures and their foundations. A widely used instrument is the piezometer, which allows monitoring of uplift pressures and pore water pressure occurring in the foundation of the ...
Josiele Patias +3 more
openaire +2 more sources
The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)
Sedimentology, Volume 73, Issue 3, Page 802-837, April 2026.ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti +5 more
wiley +1 more source
Unprotected Waters: When Protection Fails In Freshwater
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.ABSTRACT Invasive species are a major driver of biodiversity loss in protected areas (PAs), yet their impacts in aquatic environments are less well documented. This study investigated the occurrence and distribution of nonnative freshwater fish in federal PAs in Brazil.
Aymar Orlandi Neto +2 more
wiley +1 more source
Disentangling the Components Shaping Aquatic Richness Over Spatial Scales in Extreme Climatic Events
Freshwater Biology, Volume 71, Issue 3, March 2026.ABSTRACT Species richness in a region can be partitioned into three components: (1) spatial aggregation of individuals, (2) variation in total individual density and (3) species abundance distribution (SAD). However, it remains unclear how the influence of these components on richness changes under extreme climatic events.
Laura A. Ortega‐Corredor +4 more
wiley +1 more source
Revision of Manettia (Rubiaceae) in Paraguay
Nordic Journal of Botany, Volume 2026, Issue 2, February 2026.Manettia Mutis is a Neotropical genus comprising over 100 species, many of which are only known from their original descriptions or, at most, from revisions dating back over 100 years. Recent review studies have remained unpublished for several years. Conventional taxonomic methods are followed.
Silvana Yasmin Gauto +2 more
wiley +1 more source
Redes, 2014 This paper aims to define a proposition for a characterization of indicators applicable to evaluate joint research results. In order to do that, literature on interinstitutional cooperation, exchange programs and indicators was assessed, and its ...
Fabricio Baron Mussi +1 more
doaj +1 more source