Results: 6

Effects of environmental stability and phycoperiphyton structure on the macroinvertebrate community of regulated Andean rivers

Rev. biol. trop; 71 (1), 2023
Introduction: The variability in the structure of aquatic communities is frequently attributed to environmental changes; however, in stable environments such as regulated rivers, trophic interactions could be another key environmental factor determining the structure of these communities. These alteratio...

Effect of environmental characteristics on the diversity of aquatic macroinvertebrates in Andean rivers regulated for hydroelectric generation

Rev. biol. trop; 70 (1), 2022
Introduction: The Andes are characterized by an abundance of water resources and flows are frequently regulated by reservoirs for the generation of energy. The effects of regulation on aquatic macroinvertebrate communities are not well known in Colombia. Objective: To test the hypothesis that regulated c...

Protection of spawning habitat for potamodromous fish, an urgent need for the hydropower planning in the Andes

Neotrop. ichthyol; 19 (3), 2021
Because dams block migratory routes of potamodromous fish to their spawning areas, and energy generation changes natural flow seasonality, it is necessary to identify spawning areas and their conditions. This information will help in management decisions in the Magdalena River basin regarding the future ...

Hydropower affects fish trophic structure both downstream of the dam and upstream of the reservoir

Neotrop. ichthyol; 19 (1), 2021
Dams often cause drastic changes in freshwater environments and can compromise the quality and availability of food resources in rivers. This study aims to analyze the influence of a dam on the trophic structure of fish assemblages in lotic areas located both upstream and downstream of the Irapé Hydroel...