Effects of a low-head weir on multi-scaled movement and behavior of three riverine fish species.

ABSTRACT: Despite providing considerable benefits to society, dams and weirs threaten riverine ecosystems by disrupting movement and migration of aquatic animals and degrading riverine habitats. Whilst the ecological impacts of large dams are well studied, the ecological effects of low-head weirs that are periodically drowned out by high flows are less well-understood. Here we examine the effects of a low-head weir on fine- and broad-scale movements, habitat use, and breeding behaviour of three species of native freshwater fish in the Nymboida River in coastal eastern Australia. Acoustic telemetry revealed that eastern freshwater cod (Maccullochella ikei) and eel-tailed catfish (Tandanus tandanus) made few large-scale movements, but Australian bass (Percalates novemaculeata) upstream of the weir wer

SUBMITTER: Carpenter-Bundhoo L 

PROVIDER: S-EPMC7176731 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature