Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Deep Sea Microbial Ecology

Deep Sea Microbial Ecology

The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...

Marine Microbial Ecology

Marine Microbial Ecology

Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...

Microbial Wastewater Treatment

Microbial Wastewater Treatment

Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Microbial Mats

Microbial Mats

Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Individual and conjunctive operation of tidal lagoons along the west coast of the UK.

Journal of ocean engineering and marine energy·2026

Same author

Quantitative source apportionment of faecal indicator bacteria from anthropogenic and zoogenic sources of faecal contamination.

Marine pollution bulletin·2024

Same author

Impacts of a bacterial algicide on metabolic pathways in Chlorella vulgaris.

Ecotoxicology and environmental safety·2024

Same author

Depth profiles of microplastics in sediments from inland water to coast and their influential factors.

The Science of the total environment·2023

Same author

Inclusion of hydrodynamic properties of bathing waters is critical in selecting faecal indicators to assess public health impacts of faecal contamination.

Water research·2023

Same author

Combined effects of climatic change and hydrological conditions on thermal regimes in a deep channel-type reservoir.

Environmental monitoring and assessment·2023

Search research articles

Related Experiment Video

Updated: Jun 5, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

The Benthic Exchange of O₂, N₂ and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

Numerical modelling of sediment-bacteria interaction processes in surface waters.

Guanghai Gao¹, Roger A Falconer, Binliang Lin

¹Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. gaoguanghai@hotmail.com

|January 25, 2011

Summary

Sediment transport significantly impacts faecal bacteria levels in surface waters. A refined numerical model, DIVAST, successfully predicts how sediment fluxes affect bacteria concentrations, aiding water quality management.

More Related Videos

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales

Published on: November 25, 2020

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

Related Experiment Videos

Last Updated: Jun 5, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

The Benthic Exchange of O₂, N₂ and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales

Published on: November 25, 2020

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

Area of Science:

Environmental Science
Water Quality Management
Microbial Ecology

Background:

Faecal bacteria exist freely or attached to particles in surface waters.
Sediment dynamics, including deposition and resuspension, influence bacteria fate and transport.
Existing models inadequately address sediment-bacteria interactions.

Purpose of the Study:

To refine a numerical model for faecal bacteria transport, incorporating sediment dynamics.
To investigate the impact of sediment fluxes on bacteria concentrations in water bodies.
To provide a predictive tool for understanding water quality influenced by sediment.

Main Methods:

Refinement of the DIVAST (Depth Integrated Velocities And Solute Transport) model.
Development and testing of a sediment-bacteria interaction model using analytical solutions.
Application of the model to idealized case studies and a simplified flooding scenario.

Main Results:

The sediment-bacteria interaction model showed favorable agreement with known results.
Model simulations demonstrated the significant effect of sediment on water column bacteria concentrations.
Predictions from the model were compared favorably with field measurements.

Conclusions:

Sediment transport processes are critical drivers of faecal bacteria fate and transport in surface waters.
The refined DIVAST model provides a valuable tool for predicting bacteria levels influenced by sediment dynamics.
This research supports improved water quality management strategies by accounting for sediment-bacteria interactions.