Results 51 to 60 of about 569 (162)
Brazilian Journal of BiologyIn order to verify the carbon source and trophic position of the main species of fishes, of the Paraná River floodplain, we analysed the proportion of stable carbon (delta13C) and nitrogen (delta15N) isotopes in muscle of fishes sampled in the rainy ...
G. I. Manetta +2 more
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Frontiers in Marine Science, 2015 The invasion of non-native species that are phylogenetically similar to native species was observed in the Upper Paraná River following the construction of the Itaipu hydroelectric plant and subsequent removal of a natural geographic barrier (Sete Quedas
Gustavo Henrique Zaia Alves
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, 2010 Autapomorphies of Serrasalmus maculatus: 1. Ventral longitudinal lamellae of basioccipital (2): (1> 0) falling short of posterior border of basioccipital. Paralleled in nodes 170 and 205. 2. Position of sphenotic spine relative to hyomandibula (11): (0> 1) displaced anteriorly relative to anterior margin of hyomandibula. Paralleled in nodes 162 and 211
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Exploring ecohydrology through the lens of local fishers in the Bolivian Amazon
Ecosphere, Volume 17, Issue 4, April 2026.Abstract The natural flow regimes of Andean‐Amazon tributaries play a vital role in sustaining their rich biodiversity and productive local fisheries, but ongoing and proposed alteration of river flow regimes by large dams threatens to negatively impact river ecosystems. Despite its importance, our understanding of how hydrologic variability influences
Lina G. Terrazas‐Villarroel +4 more
wiley +1 more source
Environmental DNA, Volume 8, Issue 2, March/April 2026.Comparing eDNA metabarcoding and gillnet surveys in a Neotropical reservoir, this study finds that eDNA detects greater species richness yet reveals distinct assemblage structures. The results underscore the value of integrating both methods to achieve comprehensive biodiversity monitoring in hydropower‐impacted ecosystems.
Izabela Santos Mendes +6 more
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Serrasalmus auriventris Overlooked
, 2008 Published as part of The, Stefan Koerber, 2011, List of Freshwater Fishes from Argentina - Update 12., pp.
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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
Brazilian Journal of BiologyConstruction of the Itaipu Dam, 150 km downstream from Sete Quedas Falls, resulted in the drowning of that natural geographic barrier, with consequent invasion of Serrasalmus marginatus in the upper stream. This event was followed by the reduction in the
C. S. Agostinho
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Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Sam Grinstead +6 more
wiley +1 more source