Seasonal hydrology shapes the taxonomic and functional diversity of fish associated with aquatic macrophytes in a neotropical floodplain lake

Aquatic Sciences, Год журнала: 2025, Номер 87(2)

Опубликована: Март 22, 2025

Язык: Английский

Socioenvironmental impacts of the Belo Monte hydroelectric power plant as revealed by Indigenous and ribeirinho monitoring

Conservation Biology, Год журнала: 2025, Номер 39(3)

Опубликована: Май 30, 2025

Abstract Hydroelectric dams, once seen as clean and renewable energy sources, have been the subject of extensive research, particularly concerning their socioenvironmental impacts. The Belo Monte hydroelectric power plant (HPP) relies on operation 2 dams that divert water from a 130‐km stretch Xingu River to generate energy. dam has disrupted seasonal flooding cycle (flood pulse) along Volta Grande do (VGX) created reduced discharge condition analogous prolonged extreme dry season in watershed. Before HPP, local communities relied highly diverse abundant fish assemblage supported by ecosystem. Local VGX residents sought partnerships established Independent Territorial Environmental Monitoring Program (MATI‐VGX). Through this program, locals monitored spawning sites fishing dynamics. This monitoring complemented quantified communities’ perceptions about environmental impacts caused HPP. HPP was associated with shortage critically undermined river's capacity sustain vital ecosystem processes support people's lives. Drastic transformations traditional lifestyles, shifts practices, significant decline yield occurred jeopardized food sovereignty security. licensing process ignored ecological knowledge links among flood pulse, aquatic seasonally flooded ecosystems, lifestyles residents. To ensure sustainability VGX, needs change key areas, maintain discharge, avoid short‐term fluctuations, emulate natural interannual variability mitigate pulse disruption. should never be projects where are most affected. These central decision‐making regarding impact assessment, mitigation, monitoring.

Язык: Английский

Fish Assemblage Characteristics and Allochthonous Food Resources Shape the Topology of Trophic Networks in Blackwater Floodplain Forests

Wetlands, Год журнала: 2025, Номер 45(5)

Опубликована: Июнь 1, 2025

Язык: Английский