2026-04-14T03:11:25Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/176442025-12-05T06:02:19Zcom_2072_452955com_2072_2054col_2072_453063

00925njm 22002777a 4500 dc Serra Putellas, Teresa author Müller, Mara Franziska author Colomer, Jordi author 2019-03-07 Daphnia are important to understanding the biogeochemistry of aquatic ecosystems, mainly because of their ability to filter bacteria, algae and inorganic particles as well. Although there are many studies on the general effects that biotic and abiotic stressors, increased temperature and hypoxia, salinity, metals, pharmaceuticals, pesticides, etc., have on Daphnia populations, little is known about the impact elevated turbulence has. Here, we show that turbulence affects Daphnia magna survival, swimming behaviour and filtering capacity. Our data demonstrate that altering their habitat by induced mixing from turbulence, induces an increased filtering capacity of the Daphnia magna individuals, provided the level of background turbulence (defined by the dissipation of turbulent kinetic energy) is lower than ε = 0.04 cm2 s−3. The filtering capacity reduced exponentially with increasing ε, and at ε > 1 cm2 s−3 both mobility and filtration were suppressed and eventually led to the death of all the Daphnia magna individuals This work was supported by the University of Girona funding MPCUdG2016 and by the INNOQUA project from the European Union’s Horizon 2020 research and innovation program (Ares(2016)1770486) Daphnia magna Turbulència Turbulence Ecologia aquàtica Aquatic ecology Aigües residuals -- Depuració -- Tractament biològic Sewage -- Purification -- Biological treatment Functional responses of Daphnia magna to zero-mean flow turbulence