Exploring isotopic patterns of fish trophic guilds in the Volta Grande reach of the Xingu River, eastern Amazon, regulated by the operation of a hydroelectric dams. - Seabra, Lidia Brasil; Tedesco, Pablo A.; Oberdorff, Thierry; Winemiller, Kirk Owen; Huckembeck, Sônia; Freitas, Tiago Magalhaes da Silva; de Assis Montag, Luciano Fogaça (Aquatic Sciences, 2025)