The role of turbulence in transporting waterborne material within streambed sediments and across the sediment-water interface

Hyporheic exchanges due to channel bed and width undulations

Neshat Movahedi, Amir Ahmad Dehghani, Christian Schmidt, Nico Trauth, Gregory Brian Pasternack, Michael J Stewardson, Mehdi Meftah Halghi

2021-03-01

Riffle-pool sequences are fundamental, ubiquitous morphological features of alluvial rivers that are thoroughly studied in general..

Influence of Bioturbation on Hyporheic Exchange in Streams: Conceptual Model and Insights From Laboratory Experiments

S Shrivastava, MJ Stewardson, M Arora

2021-02-01

Bioturbation occurs in streambeds by the action of a range of faunal species, but little is known about how it could modify the hy..

Simulating chlorophyll-a fluorescence changing rate and phycocyanin fluorescence by using a multi-sensor system in Lake Taihu, China

Jingwei Yang, Andreas Holbach, Michael J Stewardson, Andre Wilhelms, Yanwen Qin, Binghui Zheng, Hua Zou, Boqiang Qin, Guangwei Zhu, Christian Moldaenke, Stefan Norra

2021-02-01

Algal pollution in water sources has posed a serious problem. Estimating algal concentration in advance saves time for drinking wa..

Distribution of clay-sized sediments in streambeds and influence of fine sediment clogging on hyporheic exchange

Shivansh Shrivastava, Michael J Stewardson, Meenakshi Arora

2020-12-30

In this work, the deposition of clay‐sized fine particles (d50 = 0.006 mm) and its subsequent influence on the dune‐induced hyporh..

Understanding streambeds as complex systems: review of multiple interacting environmental processes influencing streambed permeability

S Shrivastava, MJ Stewardson, M Arora

2020-10-01

The permeability of sediments at the sediment–water interface is an important control on several stream ecosystem services. It is ..

Unmanned Aerial Vehicle (UAV)-Based Thermal Infra-Red (TIR) and Optical Imagery Reveals Multi-Spatial Scale Controls of Cold-Water Areas Over a Groundwater-Dominated Riverscape

R Casas-Mulet, J Pander, D Ryu, MJ Stewardson, J Geist

2020-05-27

The forecast of warmer weather, and reduced precipitation and streamflow under climate change makes freshwater biota particularly ..

Evaluating Use of Environmental Flows to Aerate Streams by Modelling the Counterfactual Case

Michael J Stewardson, Dominic Skinner

2018-03-01

This paper evaluates an experimental environmental flow manipulation by modeling the counterfactual case that no environmental flo..

The relative contribution of near-bed vs. intragravel horizontal transport to fine sediment accumulation processes in river gravel beds

Roser Casas-Mulet, Garima Lakhanpal, Michael J Stewardson

2018-02-15

Understanding flow-sediment interactions is important for comprehending river functioning. Fine sediment accumulation processes, i..

Key hydraulic drivers and patterns of fine sediment accumulation in gravel streambeds: A conceptual framework illustrated with a case study from the Kiewa River, Australia

R Casas-Mulet, KT Alfredsen, AH McCluskey, MJ Stewardson

2017-12-15

Fine sediment processes in gravel beds may have significant impacts to overall river ecosystem function. In addition to gravitatio..

Key hydraulic drivers and patterns of fine sediment accumulation in gravel streambeds: A conceptual framework illustrated with a case study from the Kiewa River, Australia

Roser Casas-Mulet, Knut T Alfredsen, Alexander H McCluskey, Michael J Stewardson

2017-12-15

Flipping the thin film model: Mass transfer by hyporheic exchange in gaining and losing streams

Alexander H McCluskey, Stanley B Grant, Michael J Stewardson

2016-10-01

The exchange of mass between a stream and its hyporheic zone, or “hyporheic exchange,” is central to many important ecosystem serv..

Two decades of ecohydraulics: trends of an emerging interdiscipline

R Casas-Mulet, E King, D Hoogeveen, L Duong, G Lakhanpal, T Baldwin, MJ Stewardson, JA Webb

2016-07-02

Variation in reach-scale hydraulic conductivity of streambeds

MJ Stewardson, T Datry, N Lamouroux, H Pella, N Thommeret, L Valette, SB Grant

2016-04-15

Streambed hydraulic conductivity is an important control on flow within the hyporheic zone, affecting hydrological, ecological, an..

Advective Hyporheic Exchange at Multiple Scales

A McCluskey, M STEWARDSON, S Grant

2016-01-01

The effect of clogging, bed-forms and bioturbation on hyporheic exchange: experimental studies at the flume scale

R CASAS-MULET, A McCluskey, M Stewardson, G Lakhanpal, EM Gee

2016-01-01

Vertical and Horizontal Fine Sediment Accumulation During Fluctuating Flows: Outcomes from Flume Experiments

R CASAS-MULET, G LAKHANPAL, M STEWARDSON

2016-01-01

From Rain Tanks to Catchments: Use of Low-Impact Development To Address Hydrologic Symptoms of the Urban Stream Syndrome

Asal Askarizadeh, Megan A Rippy, Tim D Fletcher, David L Feldman, Jian Peng, Peter Bowler, Andrew S Mehring, Brandon K Winfrey, Jasper A Vrugt, Amir AghaKouchak, Sunny C Jiang, Brett F Sanders, Lisa A Levin, Scott Taylor, Stanley B Grant

2015-10-06

Catchment urbanization perturbs the water and sediment budgets of streams, degrades stream health and function, and causes a const..

Bedforms as Biocatalytic Filters: A Pumping and Streamline Segregation Model for Nitrate Removal in Permeable Sediments

Morvarid Azizian, Stanley B Grant, Adam J Kessler, Perran LM Cook, Megan A Rippy, Michael J Stewardson

2015-09-15

Bedforms are a focal point of carbon and nitrogen cycling in streams and coastal marine ecosystems. In this paper, we develop and ..

Fighting drought with innovation: Melbourne’s response to the Millennium Drought in Southeast Australia

KG Low, SB Grant, AJ Hamilton, K Gan, J-D Saphores, M Arora, DL Feldman

2015-01-01

First-Order Contaminant Removal in the Hyporheic Zone of Streams: Physical Insights from a Simple Analytical Model

Stanley B Grant, Keith Stolzenbach, Morvarid Azizian, Michael J Stewardson, Fulvio Boano, Laura Bardini

2014-10-07

A simple analytical model is presented for the removal of stream-borne contaminants by hyporheic exchange across duned or rippled ..