Environmental Transport of Gyrotactic Microorganisms in an Open‐Channel Flow

Abstract

Microorganisms play an essential role in the material and energy cycles of aquatic ecosystems. Their transport as active particles is key to a variety of ecological processes (X. Chen et al., 2017), such as harmful algal blooms (Durham & Stocker, 2012), bioreactors for algae biofuels (Bees & Croze, 2014;Chisti, 2007) and biofilm formation on the surface of porous media in constructed wetlands for wastewater treatment (Zeng et al., 2019).

Channel erosion and its impact on environmental flow of riparian habitat in the Middle Yangtze River

“…Therefore, it may be inferred that when the river bed substrate is entrained by the flow, the biomass of the macroinvertebrates will quickly decrease, whereas the maximum velocity for the survival of macroinvertebrates is controlled by the entrainment of the organisms themselves. Taking a further step, the sediment entrainment near the river bed has long been the hot research area of river dynamics and fluid mechanics [ [29] , [30] , [31] ], and thus, if these theories can be refined to understand the biokinetics of macroinvertebrates, maybe some new progress can be achieved.…”

New Drag Force Formula of Bending Stems in Deriving Analytical Solutions of Velocity Profile for Flow Through Flexible Vegetation

“…In rivers and lakes, vegetation characteristics and layout, river and lake bottom form, degree of bending of the river course, sediments, and suspended solids all have an effect on the characteristics of water flow (Jiang et al, 2022;S. Li & Katul, 2020;Li et al, 2023;C. Liu et al, 2021;Shan et al, 2020;Sun et al, 2022;Yang et al, 2023;Zhan et al, 2024;Zhang et al, 2020Zhang et al, , 2024.…”

“…In rivers and lakes, vegetation characteristics and layout, river and lake bottom form, degree of bending of the river course, sediments, and suspended solids all have an effect on the characteristics of water flow (Jiang et al., 2022; C. Liu, Shan, et al., 2020; S. Li & Katul, 2020; Li et al., 2023; C. Liu et al., 2021; Shan et al., 2020; Sun et al., 2022; Yang et al., 2023; Zhan et al., 2024; Zhang et al., 2020, 2024). Among them, the velocity distribution is the focus of research of rivers and the basis of aquatic environments, water ecology, and water–sediment movement (Cheng, 2015; G. Katul et al., 2002; S. Li et al., 2019; Z. Liu et al., 2011, 2012; Pan et al., 2020; Stoesser et al., 2010).…”

Modeling Riverbed Elevation and Bedload Tracer Transport Resting Times Using Fractional Laplace Motion

“…The evolution of riverbed elevations is difficult to describe as it exhibits high variability due to formation and migration of bedforms across multiple scales and types, fluctuations in grain size distribution, and the complex non-linear response to alterations in stream hydrology, among other influential variables. Understanding and quantifying dynamics of riverbed elevations are important for river engineering, stream ecology and can provide morphological boundary conditions to numerical models for predicting the transport of sediments, contaminants, microorganisms, as well as interpreting stratigraphy from the past records (Aberle et al, 2010;Best, 2005;Coleman & Melville, 1994;Ganti et al, 2014;Guala et al, 2014;Jerolmack & Mohrig, 2005;Jiang et al, 2022;Lee et al, 2022;Li et al, 2023;McElroy & Mohrig, 2009;Nikora et al, 1997;Nikora & Walsh, 2004;Simons & RESEARCH ARTICLE Richardson, 1962;Singh et al, 2009Singh et al, , 2013Singh et al, , 2023Strom et al, 2004;Wu & Chen, 2014;Yarnell et al, 2006;Zhan et al, 2024;Zhang et al, 2024).…”