5 documents found, page 1 of 1
Anthropogenic Barriers Limit Fish Access to Essential Habitats in the Amazon in...
Yofukuji, Kátia Yasuko; Fabrin, Thomaz Mansini Carrenho; Stabile, Bruno Henrique Mioto; Agostinho, Angelo Antonio; Jézéquel, CélineBarriers represent one of the greatest threats to river integrity and freshwater fish, as they fragment habitats and impair species dispersal, particularly in a scenario of climate change. In this context, we applied a novel framework that combined predictions of species distribution models with a river connectivity index to identify accessible and climatic‐environmental suitable habitats for frugivorous and so...
Metadata description of the AMAZON FISH database
Céline, Jézéquel,; Torrente-Vilara, Gislene; Sousa, Leandro; Giarrizzo, Tommaso; Valdiviezo, Jonathan; Jaime, Sarmiento,; Mabel, Maldonado,
Trends in studies of Brazilian stream fish assemblages
Dias, Murilo Sversut; Zuanon, Jansen; Couto, Thiago B. A.; Carvalho, Marla S.; Carvalho, Lucélia Nobre; Espírito-Santo, Helder Mateus VianaStudies about fish assemblages in Brazilian streams have grown in recent years, however, it remains unclear whether this increase is followed by increments in the diversity of addressed topics and theoretical frameworks adopted by researchers. We performed a systematic search for Brazilian studies on stream fish assemblages recording study region, publication year, objectives, and spatial and temporal scales ad...
Unexpected fish diversity gradients in the Amazon basin
Oberdorff, Thierry; Dias, Murilo Sversut; J?z?quel, C?line; Albert, James Spurling; Arantes, Caroline Chaves; Bigorne, RémyUsing the most comprehensive fish occurrence database, we evaluated the importance of ecological and historical drivers in diversity patterns of subdrainage basins across the Amazon system. Linear models reveal the influence of climatic conditions, habitat size and sub-basin isolation on species diversity. Unexpectedly, the species richness model also highlighted a negative upriver-downriver gradient, contrary ...
Fragmentation of Andes-to-Amazon connectivity by hydropower dams
Anderson, Elizabeth P.; Jenkins, Clinton N.; Heilpern, Sebastian; Maldonado-Ocampo, Javier A.; Carvajal-Vallejos, Fernando M.; Encalada, AndreaAndes-to-Amazon river connectivity controls numerous natural and human systems in the greater Amazon. However, it is being rapidly altered by a wave of new hydropower development, the impacts of which have been previously underestimated. We document 142 dams existing or under construction and 160 proposed dams for rivers draining the Andean headwaters of the Amazon. Existing dams have fragmented the tributary n...